B59421,641,721 Datasheet

EPCOS (TDK)

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Datasheet

PTC thermistors as
limit temperature sensors
SMD, EIA case sizes 0402, 0603 and 0805,
superior series
Series/Type: B59421, B59641, B59721
Date: July 2016
© EPCOS AG 2016. Reproduction, publication and dissemination of this publication, enclosures hereto and the
information contained therein without EPCOS' prior express consent is prohibited.
EPCOS AG is a TDK Group Company.
Applications
Over-temperature protection of power components
DC/DC converters
SMPS
Notebooks
Home appliances
Dimmers
Electronic ballasts
Automotive electronics
Secondary protection of battery packs
Features
Qualification based on AEC-Q200 rev. D
Reflow soldering only
Fast and reliable response
RoHS-compatible
UL approval to UL1434
Certified in accordance with IEC 60738-1 and IEC 60730-1; Annex J15 and J17
Lead-free terminations (tinned) for EIA case sizes 0603 and 0805
Lead-free ceramics for EIA case sizes 0402 and 0805, except B59421A0135A062
Options
Other Tsense or resistance values on request
Delivery mode
Blister tape (EIA case size 0805) or cardboard tape (EIA case sizes 0402 and 0603),
180-mm reel with 8-mm tape, taping to IEC 60286-3
Packing unit: 10.000 pcs. for EIA case size 0402, 4.000 pcs. for EIA case sizes 0805 and
0603
General technical data
Max. operating voltage Vmax 32 V DC
Minimum operating temperature (V Vmax) Top,min 40 °C
Maximum operating temperature (V Vmax) Top,max 125 °C or Tsense,1 +25 °C
whichever is higher °C
Sensors
Limit temperature sensors, EIA sizes 0402, 0603 and 0805 Superior series
Page 2 of 35Please read Cautions and warnings and
Important notes at the end of this document.
Electrical specifications and ordering codes
EIA case sizes 0402 and 0603
RR
(V Vmax)
RR
%
Tsense,1
(@ 4.7 k)
°C
Tsense,2
(@ 47 k)
°C
Ordering code
EIA case size 0402
470 ±50 75 ±5 - B59421A0075A062
470 ±50 85 ±5 - B59421A0085A062
470 ±50 95 ±5 - B59421A0095A062
470 ±50 105 ±5 - B59421A0105A062
470 ±50 115 ±5 - B59421A0115A062
470 ±50 125 ±5 - B59421A0125A062
470 ±50 135 ±5 - B59421A0135A062
EIA case size 0603
470 ±50 75 ±5 90 ±7 B59641A0075A062
470 ±50 85 ±5 100 ±7 B59641A0085A062
470 ±50 95 ±5 110 ±7 B59641A0095A062
470 ±50 105 ±5 120 ±7 B59641A0105A062
470 ±50 115 ±5 130 ±7 B59641A0115A062
470 ±50 125 ±5 140 ±7 B59641A0125A062
470 ±50 135 ±5 150 ±7 B59641A0135A062
470 ±50 145 ±5 - B59641A0145A062
Note:
In order to limit self heating effects the electrical power during measurement should be below
2 mW for EIA case size 0402 and below 4 mW for EIA case size 0603.
Sensors
Limit temperature sensors, EIA sizes 0402, 0603 and 0805 Superior series
Page 3 of 35Please read Cautions and warnings and
Important notes at the end of this document.
1) R (Tsense,1 +25 °C)
Electrical specifications and ordering codes
EIA case size 0805
RR
(V Vmax)
RR
%
Tsense,1
°C
R
(Tsense,1 5°C)
k
R
(Tsense,1 +5°C)
k
R
(Tsense,1 +15°C)
k
Ordering code
EIA case size 0805
680 ±50 70 5.7 5.7 401) B59721A0070A062
680 ±50 80 5.7 5.7 401) B59721A0080A062
680 ±50 90 5.5 13.3 40 B59721A0090A062
680 ±50 100 5.5 13.3 40 B59721A0100A062
680 ±50 110 5.5 13.3 40 B59721A0110A062
680 ±50 120 5.5 13.3 40 B59721A0120A062
680 ±50 130 5.5 13.3 40 B59721A0130A062
Note:
In order to limit self heating effects the electrical power during measurement should be below
6 mW for EIA case size 0805.
Sensors
Limit temperature sensors, EIA sizes 0402, 0603 and 0805 Superior series
Page 4 of 35Please read Cautions and warnings and
Important notes at the end of this document.
Dimensional drawings in mm
EIA case size 0402 Solder pad
Recommended maximum dimensions (mm)
EIA case size 0603 Solder pad
Recommended maximum dimensions (mm)
EIA case size 0805 Solder pad
Recommended maximum dimensions (mm)
Sensors
Limit temperature sensors, EIA sizes 0402, 0603 and 0805 Superior series
Page 5 of 35Please read Cautions and warnings and
Important notes at the end of this document.
Reliability data
Test Standard Test conditions R25/R25
Electrical endurance,
cycling
IEC 60738-1 Room temperature: Ismax , Vmax;
Number of cycles: 100
< 10%
Electrical endurance,
constant
IEC 60738-1 Storage at Vmax and Top,max (@ Vmax)
Test duration: 1000 h
< 20%
Damp heat IEC 60738-1 Temperature of air: 40 °C
Relative humidity of air: 93%
Duration: 56 days
Test according to IEC 60068-2-78
< 10%
Rapid change
of temperature I
IEC 60738-1 TLCT = Top,min, TUCT = Top,max
Number of cycles: 5
Test duration: 30 min
Test according to IEC 60068-2-14, test Na
< 10%
Rapid change
of temperature II
AEC-Q200 /
IEC 60738-1,
item 4.17
TLCT =55 °C,
TUCT = 125 °C
Number of cycles: 1000
< 25%
Vibration I IEC 60738-1 Frequency: 10 ... 2000 Hz
Displacement amplitude: 0.75 mm, resp.
Acceleration: 98 m/s2
Test duration: 3 ×2 h
Test according to IEC 60028-2-6, test Fc
< 10%
Vibration II MIL-STD-202,
method 204
Frequency: 10 ... 2000 Hz
Displacement amplitude: 0.75 mm, resp.
Acceleration: 50 m/s2
Test duration: 3 ×2 h
Test according to IEC 60028-2-6, test Fc
< 10%
Shock IEC 60738-1 Pulse shape: half-sine
Acceleration: 400 m/s2
Pulse duration: 6 ms; 6 x 5000 pulses
Test according to IEC 60068-2-27, test Ea
< 10%
Climatic sequence IEC 60738-1 Dry heat: TUCT = 125 °C
Test duration: 16 h
Damp heat first cycle
Cold: TLCT =40 °C
Test duration: 2 h
Damp heat 5 cycles
Tests performed according to
IEC 60068-2-30
< 10%
Bending test IEC 60738-1 Components reflow-soldered to test board
Maximum bendig: 2 mm
Test according to IEC 60068-2-21, test Ue
< 10%
Sensors
Limit temperature sensors, EIA sizes 0402, 0603 and 0805 Superior series
Page 6 of 35Please read Cautions and warnings and
Important notes at the end of this document.
Test Standard Test conditions R25/R25
Shear test Shearing of the component soldered on PCB
by a force of 5 N normal to components
longitudinal axis
No visible
damage
Humidity AEC-Q200 /
MIL-STD-202,
method 103
T=85°C; H = 85% r.H.; t = 1000 h
V = 0.05 Vmax
< 20%
Resistance to
soldering heat
AEC-Q200 /
IEC 60068-2-20,
test Tb
Soldering bath: 260 °C; t = 20 s < 20%
ESD AEC-Q200-002 150 pF/ 330 ; 8 kV contact discharge,
10 pulses in each polarity
< 10% for
case sizes
0603 and
0805
< 50% for
case size
0402
High temperature load Soldered PTC to PCB @ 85 °C, load
maximum operating voltage for 1.5 h on and
0.5 h off. This cycle is repeated for
1000 ±12 h
< 20%
Sensors
Limit temperature sensors, EIA sizes 0402, 0603 and 0805 Superior series
Page 7 of 35Please read Cautions and warnings and
Important notes at the end of this document.
Characteristics (typical) for case size 0402
PTC resistance RPTC versus PTC temperature TPTC (measured at low signal voltage).
Rmin and Rmax values are typical values for reference only.
TPTC
°C
Rmin
Rtypical
Rmax
TPTC
°C
Rmin
Rtypical
Rmax
40 400 815 1.230 70 1.300 2.700 4.700
30 345 692 1.040 75 2.400 4.700 9.800
20 300 605 910 80 4.700 8.500 20.500
10 270 540 810 85 7.700 14.200 39.500
0 243 486 730 90 11.700 23.500 72.000
10 235 470 705 93 14.900 31.000 100.000
20 232 463 695 100 25.100 59.000
25 235 470 705 106 38.500 100.000
30 238 477 717 110 51.000
35 247 490 739 120 100.000
40 260 520 790
50 320 660 940
60 500 990 1.400
Sensors
Limit temperature sensors, EIA sizes 0402, 0603 and 0805 Superior series
Page 8 of 35Please read Cautions and warnings and
Important notes at the end of this document.
Characteristics (typical) for case size 0402
PTC resistance RPTC versus PTC temperature TPTC (measured at low signal voltage).
Rmin and Rmax values are typical values for reference only.
TPTC
°C
Rmin
Rtypical
Rmax
TPTC
°C
Rmin
Rtypical
Rmax
40 409 835 1.260 65 328 670 1.030
30 358 724 1.090 70 410 830 1.450
20 316 640 963 75 590 1.200 2.500
10 287 578 870 80 1.070 2.250 4.700
0 264 531 800 85 2.300 4.700 8.900
10 247 498 748 90 4.700 8.500 16.000
20 237 476 715 100 12.800 24.000 46.000
25 235 472 709 108 24.500 49.000 100.000
30 233 468 706 117 46.000 100.000
40 235 473 712 120 56.000
50 249 504 760 130 100.000
55 265 537 809
60 289 588 890
Sensors
Limit temperature sensors, EIA sizes 0402, 0603 and 0805 Superior series
Page 9 of 35Please read Cautions and warnings and
Important notes at the end of this document.
Characteristics (typical) for case size 0402
PTC resistance RPTC versus PTC temperature TPTC (measured at low signal voltage).
Rmin and Rmax values are typical values for reference only.
TPTC
°C
Rmin
Rtypical
Rmax
TPTC
°C
Rmin
Rtypical
Rmax
40 429 887 1.346 80 390 810 1.300
30 373 765 1.158 85 580 1.200 2.200
20 330 673 1.015 90 1.100 2.300 4.700
10 297 603 909 95 2.300 4.700 10.200
0 272 548 824 100 4.700 9.300 19.000
10 253 508 764 110 14.000 27.500 57.000
20 240 481 722 116 24.000 49.500 100.000
25 235 470 705 120 33.000 69.000
40 227 452 684 124 45.500 100.000
50 231 461 697 130 71.000
60 242 490 743 135 100.000
70 278 570 868
75 316 650 994
Sensors
Limit temperature sensors, EIA sizes 0402, 0603 and 0805 Superior series
Page 10 of 35Please read Cautions and warnings and
Important notes at the end of this document.
Characteristics (typical) for case size 0402
PTC resistance RPTC versus PTC temperature TPTC (measured at low signal voltage).
Rmin and Rmax values are typical values for reference only.
TPTC
°C
Rmin
Rtypical
Rmax
TPTC
°C
Rmin
Rtypical
Rmax
40 420 880 1.340 90 330 743 1.150
30 368 774 1.180 95 460 1.150 2.000
20 329 679 1.030 100 930 2.200 4.700
10 298 604 910 105 2.250 4.700 9.900
0 273 557 840 110 4.700 9.500 19.000
10 254 517 780 115 7.500 16.500 35.000
25 235 470 705 120 11.500 26.000 61.000
40 222 445 667 125 16.700 42.000 100.000
50 218 436 655 130 24.000 64.000
60 219 439 658 136 36.000 100.000
70 229 458 687 140 46.000
80 256 518 780 153 100.000  
Sensors
Limit temperature sensors, EIA sizes 0402, 0603 and 0805 Superior series
Page 11 of 35Please read Cautions and warnings and
Important notes at the end of this document.
Characteristics (typical) for case size 0402
PTC resistance RPTC versus PTC temperature TPTC (measured at low signal voltage).
Rmin and Rmax values are typical values for reference only.
TPTC
°C
Rmin
Rtypical
Rmax
TPTC
°C
Rmin
Rtypical
Rmax
40 420 880 1.340 100 283 580 990
30 368 774 1.180 105 372 830 1.750
20 329 679 1.030 110 640 1.800 4.700
10 298 608 910 115 1.700 4.700 12.500
0 273 556 840 120 4.700 10.500 29.000
10 254 514 780 129 12.400 29.000 100.000
25 235 470 705 130 13.500 32.000
40 220 433 655 140 29.600 82.000
50 213 416 632 142 34.500 100.000
60 207 402 615 150 61.000
70 206 400 605 157 100.000
80 209 408 630
90 226 440 710
Sensors
Limit temperature sensors, EIA sizes 0402, 0603 and 0805 Superior series
Page 12 of 35Please read Cautions and warnings and
Important notes at the end of this document.
Characteristics (typical) for case size 0402
PTC resistance RPTC versus PTC temperature TPTC (measured at low signal voltage).
Rmin and Rmax values are typical values for reference only.
TPTC
°C
Rmin
Rtypical
Rmax
TPTC
°C
Rmin
Rtypical
Rmax
40 435 860 1.310 100 205 416 622
30 385 752 1.140 110 240 520 900
20 342 675 1.025 115 322 800 1.700
10 308 608 930 120 630 1.800 4.700
0 278 558 848 125 1.850 4.700 11.500
10 258 514 780 130 4.700 9.900 24.000
25 235 470 705 140 16.000 33.000 88.000
40 218 431 645 141 17.800 37.000 100.000
50 208 410 610 150 40.000 92.000
60 200 391 580 151 43.500 100.000
70 195 380 562 160 87.000
80 192 373 555 162 100.000
90 194 383 568
Sensors
Limit temperature sensors, EIA sizes 0402, 0603 and 0805 Superior series
Page 13 of 35Please read Cautions and warnings and
Important notes at the end of this document.
Characteristics (typical) for case size 0402
PTC resistance RPTC versus PTC temperature TPTC (measured at low signal voltage).
Rmin and Rmax values are typical values for reference only.
TPTC
°C
Rmin
Rtypical
Rmax
TPTC
°C
Rmin
Rtypical
Rmax
40 467 966 1.465 95 270 560 880
30 398 820 1.241 100 293 604 970
20 348 710 1.072 105 325 670 1.090
10 310 628 946 110 368 760 1.270
0 281 566 852 115 438 900 1.530
10 258 517 777 120 570 1.100 1.960
20 241 484 727 125 830 1.550 2.800
25 235 470 705 130 1.350 2.500 4.700
40 224 447 670 135 2.400 4.700 9.100
50 219 439 659 140 4.700 9.000 19.000
60 219 441 662 150 15.000 33.000 88.000
70 224 453 682 151 16.700 37.000 100.000
80 235 480 726 160 40.000 95.000
90 253 523 810
Sensors
Limit temperature sensors, EIA sizes 0402, 0603 and 0805 Superior series
Page 14 of 35Please read Cautions and warnings and
Important notes at the end of this document.
Characteristics (typical) for case size 0603
PTC resistance RPTC versus PTC temperature TPTC (measured at low signal voltage).
Rmin and Rmax values are typical values for reference only.
TPTC
°C
Rmin
Rtypical
Rmax
TPTC
°C
Rmin
Rtypical
Rmax
40 296 680 1.100 60 430 920 1.600
30 270 610 980 65 590 1.350 2.500
20 255 550 870 70 1.000 2.300 4.700
10 244 510 790 75 2.050 4.700 10.000
0 235 485 740 80 4.700 10.300 25.000
10 231 470 705 83 7.300 17.000 47.000
20 232 465 700 96 11.100 26.500 100.000
25 235 470 705 90 19.000 47.000
30 240 480 720 95 37.000 100.000
40 265 520 800 97 47.000
50 310 620 990 103 100.000  
Sensors
Limit temperature sensors, EIA sizes 0402, 0603 and 0805 Superior series
Page 15 of 35Please read Cautions and warnings and
Important notes at the end of this document.
Characteristics (typical) for case size 0603
PTC resistance RPTC versus PTC temperature TPTC (measured at low signal voltage).
Rmin and Rmax values are typical values for reference only.
TPTC
°C
Rmin
Rtypical
Rmax
TPTC
°C
Rmin
Rtypical
Rmax
40 350 772 1.250 90 4.700 11.000 29.000
20 290 620 970 93 7.300 17.500 47.000
10 270 568 880 95 9.700 23.500 61.000
0 252 522 805 99 17.000 42.000 100.000
10 242 490 750 100 19.500 47.000
25 235 470 705 105 37.000 82.000
40 248 490 736 107 47.000 100.000
50 278 550 830 110 65.500
60 346 690 1.050 114 100.000
70 498 1.030 1.530
75 680 1.450 2.300
80 1.080 2.300 4.700
85 2.150 4.700 12.000
Sensors
Limit temperature sensors, EIA sizes 0402, 0603 and 0805 Superior series
Page 16 of 35Please read Cautions and warnings and
Important notes at the end of this document.
Characteristics (typical) for case size 0603
PTC resistance RPTC versus PTC temperature TPTC (measured at low signal voltage).
Rmin and Rmax values are typical values for reference only.
TPTC
°C
Rmin
Rtypical
Rmax
TPTC
°C
Rmin
Rtypical
Rmax
40 350 770 1.300 85 640 1.350 2.350
20 298 585 999 90 1.030 2.210 4.700
10 277 540 900 95 2.050 4.700 11.000
0 261 510 820 100 4.700 10.500 28.000
10 248 485 755 103 7.200 17.000 47.000
20 238 472 715 108 14.000 35.500 100.000
25 235 470 705 110 18.300 47.000
30 237 472 708 115 36.000 100.000
40 243 480 725 117 47.000
50 257 510 770 123 100.000
60 285 570 870
70 345 710 1.050
80 478 995 1.550
Sensors
Limit temperature sensors, EIA sizes 0402, 0603 and 0805 Superior series
Page 17 of 35Please read Cautions and warnings and
Important notes at the end of this document.
Characteristics (typical) for case size 0603
PTC resistance RPTC versus PTC temperature TPTC (measured at low signal voltage).
Rmin and Rmax values are typical values for reference only.
TPTC
°C
Rmin
Rtypical
Rmax
TPTC
°C
Rmin
Rtypical
Rmax
40 500 1.050 1.720 80 300 585 900
20 355 743 1.130 90 450 810 1.380
10 310 635 965 95 645 1.200 2.200
0 275 558 850 100 1.100 2.200 4.700
10 255 508 770 105 2.200 4.700 12.600
20 240 479 718 110 4.700 10.900 29.500
25 235 470 705 113 7.500 18.000 47.000
30 230 460 690 118 15.800 37.000 100.000
40 222 447 674 120 21.000 47.000
50 222 448 676 125 38.000 83.000
60 231 465 698 127 47.000 100.000
70 252 503 762 136 100.000  
Sensors
Limit temperature sensors, EIA sizes 0402, 0603 and 0805 Superior series
Page 18 of 35Please read Cautions and warnings and
Important notes at the end of this document.
Characteristics (typical) for case size 0603
PTC resistance RPTC versus PTC temperature TPTC (measured at low signal voltage).
Rmin and Rmax values are typical values for reference only.
TPTC
°C
Rmin
Rtypical
Rmax
TPTC
°C
Rmin
Rtypical
Rmax
40 410 900 1.700 90 290 560 840
20 335 690 1.200 100 410 780 1.250
10 305 612 1.020 105 570 1.090 2.050
0 278 552 890 110 960 2.050 4.700
10 256 510 790 115 1.950 4.700 12.000
20 241 482 728 120 4.700 11.000 29.000
25 235 470 705 123 7.700 17.500 47.000
30 231 460 690 128 15.400 36.000 100.000
40 225 441 670 130 20.000 47.000
50 221 430 655 136 42.500 100.000
60 220 425 650 137 47.000
70 225 438 665 145 100.000
80 243 475 710
Sensors
Limit temperature sensors, EIA sizes 0402, 0603 and 0805 Superior series
Page 19 of 35Please read Cautions and warnings and
Important notes at the end of this document.
Characteristics (typical) for case size 0603
PTC resistance RPTC versus PTC temperature TPTC (measured at low signal voltage).
Rmin and Rmax values are typical values for reference only.
TPTC
°C
Rmin
Rtypical
Rmax
TPTC
°C
Rmin
Rtypical
Rmax
40 380 810 1.500 90 222 461 716
20 320 668 1.140 100 250 541 900
10 296 612 1.010 110 325 765 1.350
0 275 563 900 115 430 1.060 2.200
10 256 520 800 120 700 1.900 4.700
20 241 486 728 125 1.680 4.700 11.000
25 235 470 705 130 4.700 10.000 28.000
30 229 458 688 133 7.700 15.500 47.000
40 220 439 660 137 13.500 29.000 100.000
50 211 425 641 140 20.000 47.000
60 207 417 630 145 36.700 100.000
70 206 415 634 147 47.000
80 210 426 655 154 100.000  
Sensors
Limit temperature sensors, EIA sizes 0402, 0603 and 0805 Superior series
Page 20 of 35Please read Cautions and warnings and
Important notes at the end of this document.
Characteristics (typical) for case size 0603
PTC resistance RPTC versus PTC temperature TPTC (measured at low signal voltage).
Rmin and Rmax values are typical values for reference only.
TPTC
°C
Rmin
Rtypical
Rmax
TPTC
°C
Rmin
Rtypical
Rmax
40 380 810 1.460 100 203 432 690
20 320 668 1.130 110 225 495 825
10 296 612 1.008 120 292 665 1.230
0 275 563 900 125 402 980 2.100
10 256 520 800 130 680 1.950 4.700
20 241 486 728 135 1.610 4.700 11.000
25 235 470 705 140 4.700 10.500 28.000
30 229 456 687 143 7.700 16.500 47.000
40 218 433 655 147 13.500 30.000 100.000
50 209 416 630 150 19.800 47.000
60 202 404 614 155 36.800 100.000
70 198 396 609 157 47.000
80 195 397 615 163 100.000
90 196 405 635
Sensors
Limit temperature sensors, EIA sizes 0402, 0603 and 0805 Superior series
Page 21 of 35Please read Cautions and warnings and
Important notes at the end of this document.
Characteristics (typical) for case size 0603
PTC resistance RPTC versus PTC temperature TPTC (measured at low signal voltage).
Rmin and Rmax values are typical values for reference only.
TPTC
°C
Rmin
Rtypical
Rmax
TPTC
°C
Rmin
Rtypical
Rmax
40 380 800 1.400 100 205 410 650
20 320 662 1.100 110 218 438 710
10 296 608 990 120 245 505 845
0 275 561 892 130 310 685 1.280
10 256 519 795 135 410 1.000 2.150
20 241 485 728 140 710 2.030 4.700
25 235 470 705 145 1.610 4.700 11.000
30 229 456 687 150 4.700 10.500 28.000
40 218 433 655 153 7.700 16.800 47.000
50 209 414 630 157 13.500 30.500 100.000
60 202 400 614 160 19.800 47.000
70 198 392 605 165 37.000 100.000
80 195 390 610 167 47.000
90 196 395 625 174 100.000  
Sensors
Limit temperature sensors, EIA sizes 0402, 0603 and 0805 Superior series
Page 22 of 35Please read Cautions and warnings and
Important notes at the end of this document.
Characteristics (typical) for case size 0805
PTC resistance RPTC versus PTC temperature TPTC (measured at low signal voltage).
Rmin and Rmax values are typical values for reference only.
TPTC
°C
Rmin
Rtypical
Rmax
TPTC
°C
Rmin
Rtypical
Rmax
40 460 940 1.430 50 470 870 1.420
20 395 795 1.190 60 720 1.370 2.610
10 370 745 1.110 65 1.160 2.400 5.700
0 350 709 1.050 70 2.500 5.700 16.500
10 340 685 1.022 75 5.700 12.500 52.000
20 337 678 1.015 78 8.700 19.700 100.000
25 340 680 1.020 80 11.200 26.000
30 345 688 1.030 89 32.500 100.000
40 380 735 1.110 99 100.000  
Sensors
Limit temperature sensors, EIA sizes 0402, 0603 and 0805 Superior series
Page 23 of 35Please read Cautions and warnings and
Important notes at the end of this document.
Characteristics (typical) for case size 0805
PTC resistance RPTC versus PTC temperature TPTC (measured at low signal voltage).
Rmin and Rmax values are typical values for reference only.
TPTC
°C
Rmin
Rtypical
Rmax
TPTC
°C
Rmin
Rtypical
Rmax
40 490 1.110 1.690 60 455 900 1.420
20 415 905 1.340 70 690 1.390 2.600
10 388 822 1.210 75 1.100 2.440 5.700
0 365 755 1.120 80 2.500 5.700 17.000
10 350 710 1.060 85 5.700 12.700 52.500
20 342 683 1.025 88 8.600 20.800 100.000
25 340 680 1.020 90 11.400 28.000
30 339 677 1.016 98 31.500 100.000
40 348 697 1.045 108 100.000
50 378 750 1.120
Sensors
Limit temperature sensors, EIA sizes 0402, 0603 and 0805 Superior series
Page 24 of 35Please read Cautions and warnings and
Important notes at the end of this document.
Characteristics (typical) for case size 0805
PTC resistance RPTC versus PTC temperature TPTC (measured at low signal voltage).
Rmin and Rmax values are typical values for reference only.
TPTC
°C
Rmin
Rtypical
Rmax
TPTC
°C
Rmin
Rtypical
Rmax
40 540 1.200 1.900 60 360 760 1.110
20 455 960 1.460 70 450 960 1.450
10 420 870 1.310 80 720 1.700 2.600
0 390 790 1.200 85 1.290 2.900 5.500
10 365 730 1.110 90 3.800 9.200 22.000
20 347 690 1.040 95 13.300 26.000 80.000
25 340 680 1.020 96 15.900 30.500 100.000
30 335 675 1.010 100 28.000 57.000
40 330 670 995 104 45.000 100.000
50 335 686 1.010 111 100.000  
Sensors
Limit temperature sensors, EIA sizes 0402, 0603 and 0805 Superior series
Page 25 of 35Please read Cautions and warnings and
Important notes at the end of this document.
Characteristics (typical) for case size 0805
PTC resistance RPTC versus PTC temperature TPTC (measured at low signal voltage).
Rmin and Rmax values are typical values for reference only.
TPTC
°C
Rmin
Rtypical
Rmax
TPTC
°C
Rmin
Rtypical
Rmax
40 600 1.360 2.010 60 315 620 935
20 485 1.055 1.570 70 341 665 1.010
10 440 945 1.400 80 420 830 1.270
0 403 845 1.250 90 640 1.350 2.200
10 373 765 1.140 95 1.100 2.500 5.500
20 350 703 1.050 100 3.550 8.300 21.000
25 340 680 1.020 105 13.300 26.200 69.000
30 332 662 998 107 19.000 37.500 100.000
40 320 635 955 113 39.000 100.000
50 312 618 930 122 100.000  
Sensors
Limit temperature sensors, EIA sizes 0402, 0603 and 0805 Superior series
Page 26 of 35Please read Cautions and warnings and
Important notes at the end of this document.
Characteristics (typical) for case size 0805
PTC resistance RPTC versus PTC temperature TPTC (measured at low signal voltage).
Rmin and Rmax values are typical values for reference only.
TPTC
°C
Rmin
Rtypical
Rmax
TPTC
°C
Rmin
Rtypical
Rmax
40 565 1.260 2.150 70 288 522 810
20 468 1.025 1.660 80 311 560 870
10 431 930 1.480 90 385 725 1.110
0 400 840 1.320 100 620 1.300 2.080
10 373 766 1.180 105 1.080 2.500 5.500
20 350 706 1.060 110 3.500 8.500 30.000
25 340 680 1.020 114 10.800 25.000 100.000
30 331 653 985 115 13.300 31.000
40 315 610 930 120 30.000 100.000
50 300 570 875 129 100.000
60 290 538 830
Sensors
Limit temperature sensors, EIA sizes 0402, 0603 and 0805 Superior series
Page 27 of 35Please read Cautions and warnings and
Important notes at the end of this document.
Characteristics (typical) for case size 0805
PTC resistance RPTC versus PTC temperature TPTC (measured at low signal voltage).
Rmin and Rmax values are typical values for reference only.
TPTC
°C
Rmin
Rtypical
Rmax
TPTC
°C
Rmin
Rtypical
Rmax
40 555 1.205 1.980 70 266 485 755
20 468 1.000 1.595 80 257 458 715
10 432 915 1.435 90 256 454 713
0 400 833 1.298 100 275 510 825
10 375 768 1.170 110 355 810 1.500
20 352 708 1.060 115 560 1.700 5.500
25 340 680 1.020 120 2.500 10.000 45.000
30 329 654 983 122 5.000 19.000 100.000
40 310 604 917 125 13.300 45.000
50 292 561 855 128 23.000 100.000
60 278 520 798 139 100.000  
Sensors
Limit temperature sensors, EIA sizes 0402, 0603 and 0805 Superior series
Page 28 of 35Please read Cautions and warnings and
Important notes at the end of this document.
Characteristics (typical) for case size 0805
PTC resistance RPTC versus PTC temperature TPTC (measured at low signal voltage).
Rmin and Rmax values are typical values for reference only.
TPTC
°C
Rmin
Rtypical
Rmax
TPTC
°C
Rmin
Rtypical
Rmax
40 548 1.190 1.930 80 233 440 675
20 465 990 1.570 90 220 408 630
10 432 908 1.405 100 212 390 605
0 401 830 1.278 110 218 425 660
10 375 765 1.160 120 270 620 1.180
20 352 707 1.060 125 410 1.300 5.500
25 340 680 1.020 130 1.670 12.000 65.000
30 329 652 980 131 2.550 19.000 100.000
40 307 601 910 135 13.300 62.000
50 287 556 845 137 23.000 100.000
60 268 515 785 145 100.000
70 250 476 726
Sensors
Limit temperature sensors, EIA sizes 0402, 0603 and 0805 Superior series
Page 29 of 35Please read Cautions and warnings and
Important notes at the end of this document.
Cautions and warnings
General
EPCOS thermistors are designed for specific applications and should not be used for purposes
not identified in our specifications, application notes and data books unless otherwise agreed
with EPCOS during the design-in-phase.
Ensure suitability of thermistor through reliability testing during the design-in phase. The ther-
mistors should be evaluated taking into consideration worst-case conditions.
Storage
Store thermistors only in original packaging. Do not open the package prior to processing.
Storage conditions in original packaging: storage temperature 25 °C ... +45 °C, relative hu-
midity 75% annual mean, maximum 95%, dew precipitation is inadmissible.
Avoid contamination of thermistors surface during storage, handling and processing.
Avoid storage of thermistor in harmful environment with effect on function on long-term opera-
tion (examples given under operation precautions).
Use thermistor within the following period after delivery:
Through-hole devices (housed and leaded PTCs): 24 months
Motor protection sensors, glass-encapsulated sensors and probe assemblies: 24 months
Telecom pair and quattro protectors (TPP, TQP): 24 months
Leadless PTC thermistors for pressure contacting: 12 months
Leadless PTC thermistors for soldering: 6 months
SMDs in EIA sizes 3225 and 4032, and for PTCs with metal tags: 24 months
SMDs in EIA sizes 1210 and smaller: 12 months
Handling
PTCs must not be dropped. Chip-offs must not be caused during handling of PTCs.
The ceramic and metallization of the components must not be touched with bare hands. Gloves
are recommended.
Avoid contamination of thermistor surface during handling.
Soldering (where applicable)
Use rosin-type flux or non-activated flux.
Insufficient preheating may cause ceramic cracks.
Rapid cooling by dipping in solvent is not recommended.
Complete removal of flux is recommended.
Standard PTC heaters are not suitable for soldering.
Sensors
Limit temperature sensors, EIA sizes 0402, 0603 and 0805 Superior series
Page 30 of 35Please read Cautions and warnings and
Important notes at the end of this document.
Mounting
Electrode must not be scratched before/during/after the mounting process.
Contacts and housing used for assembly with thermistor have to be clean before mounting. Es-
pecially grease or oil must be removed.
When PTC thermistors are encapsulated with sealing material, the precautions given in chapter
"Mounting instructions", "Sealing and potting" must be observed.
When the thermistor is mounted, there must not be any foreign body between the electrode of
the thermistor and the clamping contact.
The minimum force and pressure of the clamping contacts pressing against the PTC must be
10 N and 50 kPa, respectively. In case the assembly is exposed to mechanical shock and/ or
vibration this force should be higher in order to avoid movement of the PTC during operation.
During operation, the thermistor’s surface temperature can be very high. Ensure that adjacent
components are placed at a sufficient distance from the thermistor to allow for proper cooling at
the thermistors.
Ensure that adjacent materials are designed for operation at temperatures comparable to the
surface temperature of thermistor. Be sure that surrounding parts and materials can withstand
this temperature.
Avoid contamination of thermistor surface during processing.
Operation
Use thermistors only within the specified temperature operating range.
Use thermistors only within the specified voltage and current ranges.
Environmental conditions must not harm the thermistors. Use thermistors only in normal at-
mospheric conditions. Avoid use in deoxidizing gases (chlorine gas, hydrogen sulfide gas, am-
monia gas, sulfuric acid gas etc), corrosive agents, humid or salty conditions. Contact with any
liquids and solvents should be prevented.
Be sure to provide an appropriate fail-safe function to prevent secondary product damage
caused by abnormal function (e.g. use VDR for limitation of overvoltage condition).
This listing does not claim to be complete, but merely reflects the experience of EPCOS AG.
Display of ordering codes for EPCOS products
The ordering code for one and the same EPCOS product can be represented differently in data
sheets, data books, other publications, on the EPCOS website, or in order-related documents
such as shipping notes, order confirmations and product labels. The varying representations of
the ordering codes are due to different processes employed and do not affect the
specifications of the respective products. Detailed information can be found on the Internet
under www.epcos.com/orderingcodes
Sensors
Limit temperature sensors, EIA sizes 0402, 0603 and 0805 Superior series
Page 31 of 35Please read Cautions and warnings and
Important notes at the end of this document.
Symbols and terms
Symbol Term
A Area
C Capacitance
Cth Heat capacity
f Frequency
I Current
Imax Maximum current
IRRated current
Ires Residual current
IPTC PTC current
IrResidual currrent
Ir,oil Residual currrent in oil (for level sensors)
Ir,air Residual currrent in air (for level sensors)
IRMS Root-mean-square value of current
ISSwitching current
ISmax Maximum switching current
LCT Lower category temperature
N Number (integer)
NcOperating cycles at Vmax, charging of capacitor
NfSwitching cycles at Vmax, failure mode
P Power
P25 Maximum power at 25 °C
Pel Electrical power
Pdiss Dissipation power
RGGenerator internal resistance
Rmin Minimum resistance
RRRated resistance @ rated temperature TR
RRTolerance of RR
RPParallel resistance
RPTC PTC resistance
Rref Reference resistance
RSSeries resistance
R25 Resistance at 25 °C
R25,match Resistance matching per reel/ packing unit at 25 °C
R25 Tolerance of R25
Sensors
Limit temperature sensors, EIA sizes 0402, 0603 and 0805 Superior series
Page 32 of 35Please read Cautions and warnings and
Important notes at the end of this document.
T Temperature
t Time
TAAmbient temperature
taThermal threshold time
TCFerroelectric Curie temperature
tESettling time (for level sensors)
TRRated temperature @ 25 °C or otherwise specified in the data sheet
Tsense Sensing temperature
Top Operating temperature
TPTC PTC temperature
tRResponse time
Tref Reference temperature
TRmin Temperature at minimum resistance
tSSwitching time
Tsurf Surface temperature
UCT Upper category temperature
V or Vel Voltage (with subscript only for distinction from volume)
Vc(max) Maximum DC charge voltage of the surge generator
VF,max Maximum voltage applied at fault conditions in protection mode
VRMS Root-mean-square value of voltage
VBD Breakdown voltage
Vins Insulation test voltage
Vlink,max Maximum link voltage
Vmax Maximum operating voltage
Vmax,dyn Maximum dynamic (short-time) operating voltage
Vmeas Measuring voltage
Vmeas,max Maximum measuring voltage
VRRated voltage
VPTC Voltage drop across a PTC thermistor
αTemperature coefficient
Tolerance, change
δth Dissipation factor
τth Thermal cooling time constant
λFailure rate
Lead spacing (in mm)
Sensors
Limit temperature sensors, EIA sizes 0402, 0603 and 0805 Superior series
Page 33 of 35Please read Cautions and warnings and
Important notes at the end of this document.
Page 34 of 35
Important notes
The following applies to all products named in this publication:
1. Some parts of this publication contain statements about the suitability of our products for
certain areas of application. These statements are based on our knowledge of typical
requirements that are often placed on our products in the areas of application concerned. We
nevertheless expressly point out that such statements cannot be regarded as binding
statements about the suitability of our products for a particular customer application. As a
rule we are either unfamiliar with individual customer applications or less familiar with them than
the customers themselves. For these reasons, it is always ultimately incumbent on the customer
to check and decide whether a product with the properties described in the product specification is
suitable for use in a particular customer application.
2. We also point out that in individual cases, a malfunction of electronic components or failure
before the end of their usual service life cannot be completely ruled out in the current state
of the art, even if they are operated as specified. In customer applications requiring a very high
level of operational safety and especially in customer applications in which the malfunction or
failure of an electronic component could endanger human life or health (e.g. in accident
prevention or life-saving systems), it must therefore be ensured by means of suitable design of the
customer application or other action taken by the customer (e.g. installation of protective circuitry
or redundancy) that no injury or damage is sustained by third parties in the event of malfunction or
failure of an electronic component.
3. The warnings, cautions and product-specific notes must be observed.
4. In order to satisfy certain technical requirements, some of the products described in this
publication may contain substances subject to restrictions in certain jurisdictions (e.g.
because they are classed as hazardous). Useful information on this will be found in our Material
Data Sheets on the Internet (www.tdk-electronics.tdk.com/material). Should you have any more
detailed questions, please contact our sales offices.
5. We constantly strive to improve our products. Consequently, the products described in this
publication may change from time to time. The same is true of the corresponding product
specifications. Please check therefore to what extent product descriptions and specifications
contained in this publication are still applicable before or when you place an order.
We also reserve the right to discontinue production and delivery of products. Consequently,
we cannot guarantee that all products named in this publication will always be available.
The aforementioned does not apply in the case of individual agreements deviating from the
foregoing for customer-specific products.
6. Unless otherwise agreed in individual contracts, all orders are subject to our General Terms
and Conditions of Supply.
7. Our manufacturing sites serving the automotive business apply the IATF 16949 standard.
The IATF certifications confirm our compliance with requirements regarding the quality
management system in the automotive industry. Referring to customer requirements and
customer specific requirements (“CSR”) TDK always has and will continue to have the policy of
respecting individual agreements. Even if IATF 16949 may appear to support the acceptance of
unilateral requirements, we hereby like to emphasize that only requirements mutually agreed
upon can and will be implemented in our Quality Management System. For clarification
purposes we like to point out that obligations from IATF 16949 shall only become legally binding if
individually agreed upon.
Page 35 of 35
Important notes
8. The trade names EPCOS, CeraCharge, CeraDiode, CeraLink, CeraPad, CeraPlas, CSMP, CTVS,
DeltaCap, DigiSiMic, ExoCore, FilterCap, FormFit, LeaXield, MiniBlue, MiniCell, MKD, MKK,
MotorCap, PCC, PhaseCap, PhaseCube, PhaseMod, PhiCap, PowerHap, PQSine, PQvar,
SIFERRIT, SIFI, SIKOREL, SilverCap, SIMDAD, SiMic, SIMID, SineFormer, SIOV, ThermoFuse,
WindCap are trademarks registered or pending in Europe and in other countries. Further
information will be found on the Internet at www.tdk-electronics.tdk.com/trademarks.
Release 2018-10

Products

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Available Quantity6020
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Available Quantity38322
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Available Quantity9510
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Available Quantity34741
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Available Quantity59878
Unit Price62