RHC Series Datasheet by Stackpole Electronics Inc

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Rev Date: 11/18/2020 1 www.seielect.com
This specification may be changed at any time without prior notice marketing@seielect.com
Please confirm technical specifications before you order and/or use.
RHC Series
High Power Thick Film Chip Resistor
Stackpole Electronics, Inc.
Resistive Product Solutions
0.248 ± 0.008 0.126 ± 0.008 0.024 ± 0.004 0.028 ± 0.008 0.087 ± 0.008 inches
6.30 ± 0.20 3.20 ± 0.20 0.60 ± 0.10 0.70 ± 0.20 2.20 ± 0.20 mm
Type / Code
Unit
RHC2512
L
W
H
a
b
Body Length
Body Height
Top Termination
Bottom Termination
Body Width
Features:
Handles 2W of power
Resistances from 0.1Ω to 1
RoHS compliant and halogen-free
TCR of ± 100 ppm/ºC
1% and 5% tolerances
Runs significantly cooler than standard thick film 2512 chip
Please refer to the High-Power Resistor Application Note (page 5) for more information on designing and implementing high power
resistor types.
Power Derating Curve:
Ohmic Range (Ω) and Tolerance
1%, 5%
RHC2512 2512 2200 400 ±100 0.1 - 1M
Note: (1) Lesser of √P*R or maximum working voltage
Type / Code
Package
Type
Power Rating (W)
@ 70ºC
Maximum
Working
Voltage (V)(1)
Maximum
Overload
Voltage (V)
TCR (ppm/ºC)
Test Typical
Moisture Resistance
Load Life
Resistance to Soldering
Temperature Cycling
Thermal Shock
Short Time Overload
Insulation Resistance
≥1MΩ
Operating temperature range is -55°C to +155°C
±1% + 0.05Ω for <10Ω and ±1% for ≥10Ω
0
Ambient Temperature (ºC)
120
140
160
180
155ºC
-60
0
20
40
60
80
100
Percent Rated Power (%)
100
-55ºC
70ºC
80
60
40
20
Rev Date: 11/18/2020 2 www.seielect.com
This specification may be changed at any time without prior notice marketing@seielect.com
Please confirm technical specifications before you order and/or use.
RHC Series
High Power Thick Film Chip Resistor
Stackpole Electronics, Inc.
Resistive Product Solutions
Recommended Solder Profile
This information is intended as a reference for solder profiles for Stackpole resistive components. These profiles should
be compatible with most soldering processes. These are only recommendations. Actual numbers will depend on board
density, geometry, packages used, etc., especially those cells labeled with “*”.
100% Matte Tin / RoHS Compliant Terminations
Soldering iron recommended temperatures: 330°C to 350°C with minimum duration.
Maximum number of reflow cycles: 3.
Recommended Pad Layout
L W D
Total Length Total Width Pad Depth
0.315 0.138 0.118 inches
8.00 3.50 3.00 mm
RHC2512
Unit
Type / Code
Wave Soldering
Description Maximum Recommended Minimum
Preheat Time 80 seconds 70 seconds 60 seconds
Temperature Diff. 140°C 120°C 100°C
Solder Temp. 260°C 250°C 240°C
Dwell Time at Max. 10 seconds 5 seconds *
Ramp DN (°C/sec) N/A N/A N/A
Temperature Diff. = Defference between final preheat stage and soldering stage.
Convection IR Reflow
Description Maximum Recommended Minimum
Ramp Up (°C/sec) 3°C/sec 2°C/sec *
Dwell Time > 217°C 150 seconds 90 seconds 60 seconds
Solder Temp. 260°C 245°C *
Dwell Time at Max. 30 seconds 15 seconds 10 seconds
Ramp DN (°C/sec) 6°C/sec 3°C/sec *
Tp2ao=c Max Ramp up R21: = avccscc Max Ramp new. Raxe : same: 30 sec TLZWC — (711—; _F Twzmrc —mmm"a so » 150 see, 1m 1m \ _15 —) 60 , 180 sec 25‘s <¥txme 25%:="" to="" peak="" —=""> Max 3 mm 100 80 60 4O 20 www.5eielem.com marketinngeIelec om
Rev Date: 11/18/2020 3 www.seielect.com
This specification may be changed at any time without prior notice marketing@seielect.com
Please confirm technical specifications before you order and/or use.
RHC Series
High Power Thick Film Chip Resistor
Stackpole Electronics, Inc.
Resistive Product Solutions
Heat Rise and Terminal Temperature:
140
120
100
80
60
40
20
0
Hot Spot
Solder Joint
1
2
1
2
Load (w) 1
0
2
Recommended Lead Free Resistor Reflow Profile
ARIR (as) RHC2512 (2512 2W) 200 ohm n = 5 Rul-mncr RMCF2512 (2512 1W) 200 ohm n = 5 10 10 a 5 / 11.5 I i =1 0.0 11.0 H—. h ‘5 4 _0_5 _ Mex _ 05 SJ: - +Ave _ ”In . Mln .11, 4.0 n 5 1a 15 20 n 5 1o 15 20 overload power rallng w A 3.40 1 0.10 P2 2.00 1 0.05 Overload power raung w < :2="" b="" 6.60="" 1="" 0.10="" po="" 4.00="" 1="" 0.10="" 12.00="" 1="" 0.20="" d0="" 1.55="" 1="" 0.05="" dlrediun="" n1="" feed="" f="" e="" 5.50="" 1="" 0.05="" 1.75="" 1="" 0.10="" ll="" t2="" 0.25="" 1="" 0.05="" 1.00="" 1="" 0.10="" pl="" 4.00="" 1="" 0.10="" w="" www="" seielect="" com="" marketinngeielec="" om="">
Rev Date: 11/18/2020 4 www.seielect.com
This specification may be changed at any time without prior notice marketing@seielect.com
Please confirm technical specifications before you order and/or use.
RHC Series
High Power Thick Film Chip Resistor
Stackpole Electronics, Inc.
Resistive Product Solutions
Type Unit
0.134 ± 0.004 0.260 ± 0.004 0.472 ± 0.008 0.217 ± 0.002 0.069 ± 0.004 0.157 ± 0.004 Inches
3.40 ± 0.10 6.60 ± 0.10 12.00 ± 0.20 5.50 ± 0.05 1.75 ± 0.10 4.00 ± 0.10 mm
P1
A
B
W
F
E
RHC2512
Type Unit
0.079 ± 0.002 0.157 ± 0.004 0.061 ± 0.002 0.010 ± 0.002 0.039 ± 0.004 Inches
2.00 ± 0.05 4.00 ± 0.10 1.55 ± 0.05 0.25 ± 0.05 1.00 ± 0.10 mm
P2
P0
D0
t1
t2
RHC2512
Repeated Overload:
Test condition:
Voltage (Power): 2.0, 2.25, 2.5, 2.75, 3.0, 3,25 times of rated voltage. (8W, 10.1W, 12.5W, 15.1W, 18W, 21.1W)
Applied time:
Each voltage 5 seconds.
As a reference test, the RMC was tested with the same rated voltage and testing substrate.
Packaging Specifications Embossed Plastic Tape
130,00 : 3.00 60.00 t 1.00 13.00 1 0.20 21.00 1 0.00 2.00 g 0.50 13.00 t 0.30 15.40 1 1.00 mm High Power Chip Resislors and Thermal Management CSR‘IZDS 100 mohm Suflace Temp Rlse 120 102 0.10 a 1: 0.17 :12: w ME www seielect com marketinngeIelec om
Rev Date: 11/18/2020 5 www.seielect.com
This specification may be changed at any time without prior notice marketing@seielect.com
Please confirm technical specifications before you order and/or use.
RHC Series
High Power Thick Film Chip Resistor
Stackpole Electronics, Inc.
Resistive Product Solutions
High Power Chip Resistors and Thermal Management
Stackpole has developed several surface mount resistor series in addition to our current sense resistors, which have had
higher power ratings than standard resistor chips. This has caused some uncertainty and even confusion by users as to
how to reliably use these resistors at the higher power ratings in their designs.
The data sheets for the RHC, RMCP, RNCP, CSR, CSRN, CSRF, CSS, and CSSH state that the rated power assumes
an ambient temperature of no more than 100°C for the CSS / CSSH series and 70°C for all other high power resistor
series. In addition, IPC and UL best practices dictate that the combined temperature on any resistor due to power
dissipated and ambient air shall be no more than 105°C. At first glance this wouldn’t seem too difficult, however the graph
below shows typical heat rise for the CSR1206 100 milliohm at full rated power. The heat rise for the RMCP and RNCP
would be similar. The RHC with its unique materials, design, and processes would have less heat rise and therefore
would be easier to implement for any given customer.
Reel Specifications
Type Unit
7.087 ± 0.118 2.362 ± 0.039 0.512 ± 0.008 0.827 ± 0.031 0.079 ± 0.020 0.512 ± 0.012 0.606 ± 0.039 Inches
180.00 ± 3.00 60.00 ± 1.00 13.00 ± 0.20 21.00 ± 0.80 2.00 ± 0.50 13.00 ± 0.30 15.40 ± 1.00 mm
RHC2512
W2
A
B
C
D
E
W1
Compliant (W/WW) Surlace Mounl Chip Resistor Nme (1): RcHS Complianl by means 0? exemption 7m. www seielect com marketinngeIelec om
Rev Date: 11/18/2020 6 www.seielect.com
This specification may be changed at any time without prior notice marketing@seielect.com
Please confirm technical specifications before you order and/or use.
RHC Series
High Power Thick Film Chip Resistor
Stackpole Electronics, Inc.
Resistive Product Solutions
The 102°C heat rise shown here would indicate there will be additional thermal reduction techniques needed to keep this
part under 105°C total hot spot temperature if this part is to be used at 0.75 watts of power. However, this same part at
the usual power rating for this size would have a heat rise of around 72°C. This additional heat rise may be dealt with
using wider conductor traces, larger solder pads and land patterns under the solder mask, heavier copper in the
conductors, via through PCB, air movement, and heat sinks, among many other techniques. Because of the variety of
methods customers can use to lower the effective heat rise of the circuit, resistor manufacturers simply specify power
ratings with the limitations on ambient air temperature and total hot spot temperatures and leave the details of how to best
accomplish this to the design engineers. Design guidelines for products in various market segments can vary widely so
it would be unnecessarily constraining for a resistor manufacturer to recommend the use of any of these methods over
another.
Note: The final resistance value can be affected by the board layout and assembly process, especially the size of the mounting pads
and the amount of solder used. This is especially notable for resistance values ≤ 50mΩ.
This should be taken into account when designing.
RoHS Compliance
Stackpole Electronics has joined the worldwide effort to reduce the amount of lead in electronic components and to meet the various
regulatory requirements now prevalent, such as the European Union’s directive regarding “Restrictions on Hazardous Substances”
(RoHS 3). As part of this ongoing program, we periodically update this document with the status regarding the availability of our
compliant components. All our standard part numbers are compliant to EU Directive 2011/65/EU of the European Parliament as
amended by Directive (EU) 2015/863/EU as regards the list of restricted substances.
“Conflict Metals” Commitment
We at Stackpole Electronics, Inc. are joined with our industry in opposing the use of metals mined in the “conflict region” of the eastern
Democratic Republic of the Congo (DRC) in our products. Recognizing that the supply chain for metals used in the electronics industry
is very complex, we work closely with our own suppliers to verify to the extent possible that the materials and products we supply do
not contain metals sourced from this conflict region. As such, we are in compliance with the requirements of Dodd-Frank Act regarding
Conflict Minerals.
Compliance to “REACH”
We certify that all passive components supplied by Stackpole Electronics, Inc. are SVHC (Substances of Very High Concern) free and
compliant with the requirements of EU Directive 1907/2006/EC, “The Registration, Evaluation, Authorization and Restriction of
Chemicals”, otherwise referred to as REACH. Contact us for complete list of REACH Substance Candidate List.
Environmental Policy
It is the policy of Stackpole Electronics, Inc. (SEI) to protect the environment in all localities in which we operate. We continually strive
to improve our effect on the environment. We observe all applicable laws and regulations regarding the protection of our environment
and all requests related to the environment to which we have agreed. We are committed to the prevention of all forms of pollution.
RoHS Compliance Status
RHC
High Power Thick Film
Surface Mount Chip Resistor
SMD YES(1) 100% Matte Sn over Ni Jul-04 04/27
Lead-Free
Mfg. Effective Date
(Std Product Series)
Lead-Free
Effective Date
Code
(YY/WW)
Note (1): RoHS Compliant by means of exemption 7c-I.
Standard
Product
Series
Description
Package /
Termination
Type
Standard
Series
RoHS
Compliant
Lead-Free Termination
Composition
—l l— | | Product Series Size Tolerance Pack ing Resistance Value Series Description Code W Code Tol Value Code Description Size Quantity FlHC th Power 2512 F 1% E96, E24 J 5% E24 Plastic Tape the decimal holder. 0.1 ohm : R100 4.75 uh 4R75 10.2 thm :10K2 1 Mohm : 1M00 www seielect com marketinngeIelec om
Rev Date: 11/18/2020 7 www.seielect.com
This specification may be changed at any time without prior notice marketing@seielect.com
Please confirm technical specifications before you order and/or use.
RHC Series
High Power Thick Film Chip Resistor
Stackpole Electronics, Inc.
Resistive Product Solutions
1 2 3 4 5 6 7 8 9 10 11 12 13
R H C 2 5 1 2 F T 1 0 K 0
How to Order
Resistance Value
Series Description Code W Code Tol Value Code Description Size Quantity
RHC
High Power 2512 2 F 1% E96, E24
J
5% E24
0.1 ohm = R100
4.75 ohm = 4R75
10.2 Kohm = 10K2
1 Mohm = 1M00
Tolerance
Four characters with
the multiplier used as
the decimal holder.
4000
Product Series
Packaging
Size
T
7" Reel
Plastic Tape
2512

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