CH Series Datasheet by Littelfuse Inc.

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© 2019 Littelfuse, Inc.
Specifications are subject to change without notice.
Revised: 06/19/19
Metal-Oxide Varistors (MOVs)
Surface Mount Varistors > CH Series
CH Varistor Series RoHS
Description
CH Series transient surge suppressors are small,
metal-oxide varistors (MOVs) manufactured in leadless
chip form. They are intended for use in a variety of
applications from low voltage DC to off-line board-level
protection. These devices, which have significantly
lower profiles than traditional radial lead varistors,
permit designers to reduce the size and weight and
increase the reliability of their equipment designs.
CH Series varistors are available in a voltage range from
14V to 275V (VM(AC)RMS), and energy ratings up to 8J.
See the Littelfuse Multilayer Suppressor Series also.
Features
RoHS compliant
Leadless, surface
mount chip in 5
x 8mm Size
Voltage ratings
VM(AC)RMS 14V to 275V
Supplied in tape and
reel or bulk pack
No derating up to
125ºC ambient
High surge rated
up to 600A
Agency Approvals
Absolute Maximum Ratings
• For ratings of individual members of a series, see Device Ratings and Specifications chart
Continuous CH Series Units
Steady State Applied Voltage
AC Voltage Range (VM(AC)RMS) 14 to 275 V
DC Voltage Range (VM(DC)) 18 to 369 V
Transient
Peak Pulse Current (ITM)
For 8/20µs Current (See Figure 2) 100 to 600 A
Single Pulse Energy Range
For 10/1000µs Current Wave (WTM) 1.0 to 8.0 J
Operating Ambient Temperature Range (TA) -55 to +125 ºC
Storage Temperature Range (TSTG) -55 to +150 ºC
Temperature Coefficient (αV) of Clamping Voltage (VC) at Specified Test Current <0.01 %/ºC
CAUTION: Stresses above those listed in "Absolute Maximum Ratings" may cause permanent damage to the device. This is a stress only rating and operation of
the device at these or any other conditions above those indicated in the operational sections of this specification is not implied.
Agency Agency Approval Agency File Number
UL1449 E320116
Recognized under the components program of
Underwriters Laboratories.
Additional Information
Datasheet Samples
Resources
% Lilleliuse‘ my ppm \ Arm-.2
© 2019 Littelfuse, Inc.
Specifications are subject to change without notice.
Revised: 06/19/19
Metal-Oxide Varistors (MOVs)
Surface Mount Varistors > CH Series
Part
Number
Maximum Ratings (125ºC) Specifications (25ºC)
Continuous Transient Varistor Voltage at 1 mA DC Test
Current
Max Clamping Volt VC at
Test Current (8/20µs)
Typical
Capacitance
VRMS VDC
Energy
(10/1000µ s)
Peak Current
(8/20µs)
VM(AC) VM(DC) WTM ITM MIN VN(DC) MAX VCIPf=1MHz
(V) (V) (J) (A) (V) (V) (V) (V) (A) (pF)
V22CH8 14 18 (Note 3) 1.0 (Note2) 100 18.7 22.0 26.0 47 5 1600
V27CH8 17 22 1.0 100 23.0 27.0 31.1 57 5 1300
V33CH8 20 26 1.0 100* 29.5 33.0 36.5 68 5 750
V39CH8 25 31 1.0 100* 35.0 39.0 43.0 79 5 700
V47CH8 30 38 1.2 100* 42.0 47.0 52.0 92 5 650
V56CH8 35 45 1.4 100* 50.0 56.0 62.0 107 5 600
V68CH8 40 56 1.5 100* 61.0 68.0 75.0 127 10 500
V120CH8 75 102 2.0 2506108.0 120.0 132.0 200 10 300
V150CH8 95 127 3.0 2506135.0 150.0 165.0 250 10 250
V180CH8 115 153 4.0 2506162.0 180.0 198.0 295 10 120
V200CH8 130 175 4.0 2506184.0 200.0 228.0 340 10 110
V220CH8 140 180 5.0 2506198.0 220.0 242.0 360 10 105
V240CH8 150 200 5.0 2506212.0 240.0 268.0 395 10 100
V360CH8 230 300 6.0 2507324.0 360.0 396.0 595 10 70
V390CH8 250 330 7. 0 2507354.0 390.0 429.0 650 10 60
V430CH8 275 369 8.0 2507389.0 430.0 473.0 710 10 50
Device Ratings and Specifications
NOTES:
1. Power dissipation of transients not to exceed 0.25W.
2. Energy rating for impulse duration of 30ms minimum to one half of peak current value.
3. Also rated to withstand 24V for 5 minutes.
4. The Typical Capacitance is for reference only.
5. *High Surge Option (up to 400A) available for relevant voltage ratings.
6. High surge option(up to 600A) available for relevant voltage ratings.
7. High surge option(up to 500A) available for relevant voltage ratings.
8. Ultrasonic welding process is not recommended for CH series.
Current, Energy and Power Derating Curve
Continuous power dissipation capability is not an applicable
design requirement for a suppressor, unless transients
occur in rapid succession. Under this condition, the
average power dissipation required is simply the energy
(watt-seconds) per pulse times the number of pulses
per second. The power so developed must be within
the specifications shown on the Device Ratings and
Specifications Table for the specific device. Furthermore,
the operating values need to be derated at high tempera
tures as shown in this diagram. Because varistors can only
dissipate a relatively small amount of average power they
are, therefore, not suitable for repetitive applications that
involve substantial amounts of average power dissipation.
FIGURE 1. CURRENT, ENERGY AND POWER DERATING
CURVE
100
90
80
70
60
50
40
30
20
10
0
-55 50 60 70 80 90 100110 120130 140150
AMBIENT TEMPERATURE ( oC)
PERCENT OF RATED VALUE
Figure 1
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© 2019 Littelfuse, Inc.
Specifications are subject to change without notice.
Revised: 06/19/19
Metal-Oxide Varistors (MOVs)
Surface Mount Varistors > CH Series
FIGURE 2. PEAK PULSE CURRENT TEST WAVEFORM
100
90
50
10
O1T
T1
T2
TIME
PERCENT OF PEAK VALUE
O1 = Virtual Origin of Wave
T = Time From 10% to 90% of Peak
T1 = Virtual Front time = 1.25 t
T2 = Virtual Time to Half Value (Impulse Duration)
Example: For an 8/20 s Current Waveform:
8s = T1 = Virtual Front Time
20 s = T2 = Virtual Time to Half Value
Peak Pulse Current Test Waveform
Clamping Voltage for V120CH8 – V430CH8
Clamping Voltage for V22CH8 – V68CH8
FIGURE 3. CLAMPING VOLTAGE FOR V22CH8 - V68CH8
500
400
300
200
100
90
80
70
60
50
40
30
20
10
MAXIMUM PEAK VOLTS (V)
PEAK AMPERES (A)
10-3 10 -2 10-1 10 010110 210 3
V56CH8
V47CH8
V39CH8
V33CH8
V27CH8
V22CH8
MAXIMUM CLAMPING VOLTAG E
MODEL SIZE 5 x 8mm
22 TO 56VN(DC) RATING
TA = -55oC TO 125oC
V68CH8
FIGURE 4. CLAMPING VOLTAGE FOR V120CH8 - V430CH8
4,000
3,000
2,000
1,000
900
800
700
600
500
400
300
200
100
10
-3
10
-2
10
-1
10
0
10
1
10
2
10
3
10
4
V180CH8
V150CH8
V120CH8
V430CH8
V390CH8
V360CH8
V240CH8
V220CH8
V200CH8
PEAK AMPERES (A)
MAXIMUM PEAK VOLTS (V)
MAXIMUM CLAMPING VOLTAGE
MODEL SIZE 5 x 8mm
100 TO 430V
N(DC)
RATING
T
A
= -55
o
C TO 125
o
C
NOTE: If pulse ratings are exceeded, a shift of VN(DC) (at specified current) of more than +/-10% could result. This type of shift, which normally results in a decrease of VN(DC), may result in
the device not meeting the original published specifications, but it does not prevent the device from continuing to function, and to provide ample protection.
Surge Current Rating Curves for V22CH8 - V56CH8
FIGURE 5. SURGE CURRENT RATING CURVES FOR
V22CH8 - V56CH8
500
200
50
20
10
5
2
1
0.2
0.5
100
20 100 1,000 10,000
IMPULSE DURATION
SURGE CURRENT (A)
1
2
10
102
103
104
105
106
INDEFINITE
MODEL SIZE 5 x 8mm
V22CH8 - V56CH8
(µs)
20 100 1,000 10,000
IMPULSE DURATION (µs)
1,000
500
250
100
50
25
10
5
1
0.5
SURGE CURRENT (A)
2.5
1
2
10
106
INDEFINITE
102
103
104
105
MODEL SIZE 5 x 8mm
V120CH8 - V430CH8
Pulse Rating Curves
01 = Virtual Origin of Wave
T = Time from 10% to 90% of Peak
T1 = Rise Time = 1.25 x T
T2 = Decay Time
Example:
For an 8/20 µs Current Waveform:
8µs = T1 = Rise Time
20µs = T2 = Decay Time
Surge Current Rating Curves for
V120CH8 - V430CH8
Figure 2
Figure 3 Figure 4
Figure 5 Figure 6
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© 2019 Littelfuse, Inc.
Specifications are subject to change without notice.
Revised: 06/19/19
Metal-Oxide Varistors (MOVs)
Surface Mount Varistors > CH Series
Lead (Pb) Soldering Recommendations
The principal techniques used for the soldering of
components in surface mount technology are IR Re-flow
and Wave soldering. Typical profiles are shown on the right.
CH series devices have silver-platinum terminals (Ag/Pt),
and the recommended solder is 62/36/2 (Sn/Pb/Ag), 60/40
(Sn/Pb) or 63/37 (Sn/Pb). Littelfuse also recommends an
RMA solder flux.
Wave soldering is the most strenuous of the processes.
To avoid the possibility of generating stresses due to
thermal shock, a preheat stage in the soldering process
is recommended, and the peak temperature of the solder
process should be rigidly controlled.
When using a reflow process, care should be taken to
ensure that the CH chip is not subjected to a thermal
gradient steeper than 4 degrees per second; the ideal
gradient being 2 degrees per second. During the soldering
process, preheating to within 100 degrees of the solder's
peak temperature is essential to minimize thermal shock.
Once the soldering process has been completed, it is
still necessary to ensure that any further thermal shocks
are avoided. One possible cause of thermal shock is hot
printed circuit boards being removed from the solder
process and subjected to cleaning solvents at room
temperature. The boards must be allowed to cool gradually
to less than 50ºC before cleaning.
Lead–free (Pb-free) Soldering Recommendations
CH series devices have silver-platinum terminals (Ag/Pt),
and the recommended Lead-free solder is 96.5/3.0/0.5
(SnAgCu) with an RMA flux, though there is a wide
selection of pastes and fluxes available that should be
compatible.
The reflow profile must be constrained by the maximums
in the Lead–free Reflow Profile. For Lead–free Wave
soldering, the Wave Solder Profile still applies.
Note: the Lead–free paste, flux and profile were used for
evaluation purposes by Littelfuse, based upon industry
standards and practices. There are multiple choices of all
three available, it is advised that the customer explores the
optimum combination for their process as processes vary
considerably from site to site.
Water cleaning solder paste is not recommended for
standard CH8 series. For water cleaning solder paste, we
recommend the passivate glass coating version. Please
see the ordering note section for the detailed suffix code.
FIGURE 14. REFLOW SOLDER PROFILE
FIGURE 15.WAVE SOLDER PROFILE
FIGURE 16. LEAD-FREE RE-FLOW SOLDER PROFILE
TIME (MINUTES)
300
250
200
150
100
50
0
0.0 0.5 1. 01.5 2.0 2.5 3.0 3.5 4.0 4.5
MAXIMUM WAVE 260°C
SECOND PREHEAT
FIRST PREHEAT
MAXIMUM TEMPERATURE 250˚C,
TIME WITHIN 5˚C OF PEAK
20 SECONDS MAXIMUM
PREHEAT ZONE
RAMP RATE
<3˚C/s 60 - 150 SEC
> 217˚C
PREHEAT ZONE
PREHEAT DWELL
RAMP RATE
<2°C/s
MAXIMUM TEMPERATURE
230°C
TEMPERATURE °C
TIME (MINUTES)
250
200
150
100
50
0
0 0.5 1.0 1.5 2.0 2.5 3.0 3.5 4.0
40-80
SECONDS
ABOVE 183°C
TEMPERATURE °C
TEMPERATURE °C
TIME (MINUTES)
300
250
200
150
100
50
00 1.0 2.0 3.0 4.0 5.0 6.0 7. 0
FIGURE 14. REFLOW SOLDER PROFILE
FIGURE 15.WAVE SOLDER PROFILE
FIGURE 16. LEAD-FREE RE-FLOW SOLDER PROFILE
TIME (MINUTES)
300
250
200
150
100
50
0
0.0 0.5 1. 01.5 2.0 2.5 3.0 3.5 4.0 4.5
MAXIMUM WAVE 260°C
SECOND PREHEAT
FIRST PREHEAT
MAXIMUM TEMPERATURE 250˚C,
TIME WITHIN 5˚C OF PEAK
20 SECONDS MAXIMUM
PREHEAT ZONE
RAMP RATE
<3˚C/s 60 - 150 SEC
> 217˚C
PREHEAT ZONE
PREHEAT DWELL
RAMP RATE
<2°C/s
MAXIMUM TEMPERATURE
230°C
TEMPERATURE °C
TIME (MINUTES)
250
200
150
100
50
0
0 0.5 1.0 1.5 2.0 2.5 3.0 3.5 4.0
40-80
SECONDS
ABOVE 183°C
TEMPERATURE °C
TEMPERATURE °C
TIME (MINUTES)
300
250
200
150
100
50
00 1.0 2.0 3.0 4.0 5.0 6.0 7. 0
FIGURE 14. REFLOW SOLDER PROFILE
FIGURE 15.WAVE SOLDER PROFILE
FIGURE 16. LEAD-FREE RE-FLOW SOLDER PROFILE
TIME (MINUTES)
300
250
200
150
100
50
0
0.0 0.5 1. 01.5 2.0 2.5 3.0 3.5 4.0 4.5
MAXIMUM WAVE 260°C
SECOND PREHEAT
FIRST PREHEAT
MAXIMUM TEMPERATURE 260˚C,
TIME WITHIN 5˚C OF PEAK
20 SECONDS MAXIMUM
PREHEAT ZONE
RAMP RATE
<3˚C/s 60 - 150 SEC
> 217˚C
PREHEAT ZONE
PREHEAT DWELL
RAMP RATE
<2°C/s
MAXIMUM TEMPERATURE
230°C
TEMPERATURE °C
TIME (MINUTES)
250
200
150
100
50
0
0 0.5 1. 0 1. 5 2.0 2.5 3.0 3.5 4.0
40-80
SECONDS
ABOVE 183°C
TEMPERATURE °C
TEMPERATURE °C
TIME (MINUTES)
300
250
200
150
100
50
00 1. 0 2.0 3.0 4.0 5.0 6.0 7. 0
Reflow Solder Profile
Wave Solder Profile
Lead–free Re-flow Solder Profile
Figure 7
Figure 8
Figure 9
© 2019 Littelfuse, Inc.
Specifications are subject to change without notice.
Revised: 06/19/19
Metal-Oxide Varistors (MOVs)
Surface Mount Varistors > CH Series
Dimensions
NOTE 1
C
A
B
E
L
W
D
Symbol Inches Millimeters
Min Max Min Max
A0.402 10.210
B0.216 5.500
C0.087 2.210
D- 0.080 - 2.00
E0.016 0.050 0.41 1.27
L0.311 0.335 7.90 8.51
W0.185 0.207 4.70 5.26
PAD LAYOUT DIMENSIONS
CHIP LAYOUT DIMENSIONS
Part Numbering System
V 220 CH 8
RELATIVE SIZE INDICATOR
LITTELFUSE VARISTOR
SERIES DESIGNATOR
NOMINAL VARISTOR
VOLTAGE
PACKAGING OPTIONS
No Letter: Standard 13 Inch Reel
T: 7 Inch Reel
S: Bulk Pack
X
NOTE: Avoid metal runs in this area. Proper cleaning process is needed to avoid flux
residue.
© 2019 Littelfuse, Inc.
Specifications are subject to change without notice.
Revised: 06/19/19
Metal-Oxide Varistors (MOVs)
Surface Mount Varistors > CH Series
Notes :
• Conforms to EIA-481-1, Revision A
• Can be supplied to IEC P ublication 286-3
Standard Packaging*
CH Series varistors are always shipped in tape and reel.
The standard 13-inch reel utilized contains 4000 pieces.
Note also that the CH Series receives no branding on the
chip itself.
*NOTE: It is recommended that parts be kept in the sealed
bag provided and that parts be used as soon as possible
when removed from bags.
Special Packaging
Option 1 7-inch reels containing 1000 pieces are
available. To order 7-inch reels add a 'T' suffix to
the part number; e.g., V47CH8T.
Option 2 For small quantities (less than 100 pieces) the
units are shipped bulk pack. To order, add a 'S'
suffix to the part number; e.g., V47CH8S.
Symbol Parameter Size (mm)
B0Cavity Length 8.8 -/+ 0.1
A0Cavity Width 5.5 -/+ 0.1
K0Cavity Depth 2.0 Min.
H0Ref. Plane for A0 and B0 + 0.10
0.3
- 0.05
R1, R2, R3Tape Cavity Radii 0.5 Max.
TCarrier Tape Thickness 1.0 Max.
T1Cover Tape Thickness 0.1 Max.
ESprocket Hole from Edge 1.75 -/+ 0.1
P0Sprocket Hole Pitch 4.0 -/+ 0.1
DSprocket Hole Diameter + 0.1
1.5
- 0.0
P2Hole Centre to Component Centre 2.0 -/+ 0.15
R4Min. Bending Radius 30.5 Min.
D1Ejection Hole Diameter 1.5 Min.
KOverall Thickness 3.0 Min.
PPitch Of Component 8.0 -/+ 0.1
FSprocket Hole to Ejection Hole 7.5 -/+ 0.1
WCarrier Tape Width 16.0 -/+ 0.3
B0
D
P2
P
P0
A0
D1
E
F
W
CROSS SECTION
(REF. PLANE FOR A 0 & B0)
T
R1
R2
K0
A0
R3
B0
H0
K0
SECTION
THRU
CAVITY
T1
T
K
MINIMUM
BENDING
RADIUS
R4
CAVITY DETAILS
REELED RADIUS DET AILS
PLAN VIEW OF STRIP
Tape and Reel Specifications
Ordering Notes:
Standard Model Order As
V33CH8 V33CH8X3313
X3313: HIGH SURGE RATING OPTION --
X3313-Passivative glass coating version: High
surge rated up to 600A and suitable to use for
water cleaning soldering paste Example:
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test each product selected for their own applications. Littelfuse products are not designed for, and may not be used in, all applications.
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