± 0.5 % (1 m to < 2 m ) ± 0.1 % (2 m to 200 m ) Temperature Coefficient. ± 25 ppm/ C (1 m to < 3 m ) Max. (- 55 C to C,

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Bulk Metal Technology High Precision, Current Sensing, Power Surface Mount, Metal Strip Resistor with Resistance Value from 1 m, Rated Power up to 3 W and TCR to ± 15 ppm/ C Maximum No minimum order

1 Bulk Metal Technology High Precision, Current Sensing, Power Surface Mount, Metal Strip Resistor with Resistance Value from 1 m, Rated Power up to 3 W and TCR to ± 15 ppm/ C Maximum No minimum order quantity and any value at any tolerance available within resistance range. Vishay Foil Resistors application engineering department is available to advise and make recommendations. For non-standard technical requirements and special applications, please contact foil@vishaypg.com. A B Four terminal (Kelvin) design: allows for precise and accurate measurements. FGURE 1 - POWER DERATNG CURVE Rated Power (%) R V Zin =~ Ambient Temperature ( C) C + 7 C FEATURES Temperature coefficient of resistance: ± 15 ppm/ C max. (- 55 C to C, + 25 C ref.); ± 1 ppm/ C max. (- 55 C to C, + 25 C ref.) is available on request (see table 1) Power rating: 1 W to 3 W Resistance tolerance: ±.1 % Resistance range: 1 m to 2 m (1) Vishay Foil resistors are not restricted to standard values, specific as required values can be supplied at no extra cost or delivery (e.g m vs. 2 m ) Load life stability to ±.2 % (7 C, 2 h at rated power) Short time overload: ±.1 % typical Thermal EMF: 3 µv/ C (DC offset error, significant for low values) Maximum current: up to 54 A Proprietary processing techniques produce low TCR, tight tolerance and improve stability Low inductance < 5 nh Solderable terminations Excellent frequency response to 5 MHz Matched sets are available on request Screening in accordance with EEE-NST2 available (per ML-PRF and ML-PRF-49465; see and datasheets) Terminal finishes available: lead (Pb)-free, tin/lead alloy Prototype quantities available in just 5 working days or sooner. For more information, please contact foil@vishaypg.com For better performance please contact Application Engineering Compliant to RoHS directive 22/95/EC MPROVED PRODUCT Weight (Maximum).9 g.29 g Notes (1) For CSM2512 up to 5 m please contact application engineering: foil@vishaypg.com (2) For values above.1 derate linearly to 8 % rated power at.5 (3) Maximum current for a given resistance value is calculated using = (4) Please contact application engineering: foil@vishaypg.com * Pb containing terminations are not RoHS compliant, exemptions may apply D TABLE 1 - SPECFCATONS PARAMETER CSM2512 CSM3637 Resistance Range 1 m to 2 m (1) Power Rating at 7 C 1 W (2) 3 W ( 1 m to 1 m ) 2 W (> 1 m to 2 m ) Maximum Current (3) 31 A 54 A Tolerance ±.5 % (1 m to < 3 m ) ±.1 % (3 m to 2 m ) ±.5 % (1 m to < 2 m ) ±.1 % (2 m to 2 m ) Temperature Coefficient ± 5 ppm/ C (1 m to < 3 m ) ± 25 ppm/ C (1 m to < 3 m ) Max. (- 55 C to C, ± 15 ppm/ C (3 m to 2 m ) ± 15 ppm/ C (3 m to 2 m ) + 25 C Ref.) ± 1 ppm/ C (3 m to 1 m ) is available on request (4) ± 1 ppm/ C (1 m to 1 m ) is available on request (4) Operating Temperature Range - 65 C to + 17 C Maximum Working Voltage (P x R) 1/2 Document Number: 6737 For technical questions, contact Revision: 3-May-12 foil@vishaypg.com 1 P R

2 ABOUT CSM (Low Ohm Value 1 m to 2 m ) New high-precision Bulk Metal surface-mount Power Metal Strip resistor of 1 m to 2 m that features an improved load-life stability of ±.2 % at + 7 C for 2 h at rated power, an absolute TCR of ± 15 ppm/ C maximum from - 55 C to C, + 25 C ref., and a tolerance of ±.1 %. Typical current sensing resistors offer a load-life stability of 1 % through a 2 h workload. The improved resistance stability of the CSM Series makes it ideal for tightened-stability voltage division and precision current sensing applications in switching linear power supplies, power amplifiers, measurement instrumentation, bridge networks, and medical and test equipment. n addition, the CSM Series complies with EEE-NST-2 (ML-PRF and ML-PRF 49465) for military and space applications. Traditional Passive current sensors and shunts generate heat under power, which changes their resistance, and thus their voltage output. The CSM s low absolute TCR reduces errors due to temperature gradients, thus reducing a major source of uncertainty in current measurement. The CSM can withstand unconventional environmental conditions, including the extremely high temperatures and radiation-rich environments of down-hole oil exploration and well logging, or the deep-sea underwater repeaters in cross-ocean communications. The stability of the CSM can be further enhanced by post-manufacturing operations (PMO), such as temperature cycling, short-time overload, and accelerated load life which are uniquely applicable to Bulk Metal Foil resistors. The device features a low thermal electromotive force (EMF) that is critical in many precision applications. The CSM s all-welded construction is composed of a Bulk Metal resistive element with welded copper terminations, plated for soldering. The terminations make true ohmic contact with the resistive layer along the entire side of the resistive element, thereby minimizing temperature variations. Also, the resistor element is designed to uniformly dissipate power without creating hot spots, and the welded terminations material is compatible with the element material. These design factors result in a very low thermal-emf (3 µv/ C) resistor, because in addition to the low thermal EMF compatibility of the metals, the uniformity and thermal efficiency of the design minimizes the temperature differential across the resistor, thereby assuring low thermal EMF generation at the leads. This further reduces the battery effect exhibited by most current-sensing or voltage-reference resistors. Thus, the parasitic voltage generated at the junction of two dissimilar metals, which is especially important in low-value current-sensing resistors, is minimized, while the pure current-to-voltage conversion is protected from such interference in DC applications. The stability problems associated with analog circuits are very pervasive, but knowledgeable selection of a few high-quality resistors, networks, or trimming potentiometers in critical locations can greatly improve circuit performance, long-term application-related performance, as well as the designer s peace-of-mind. Additionally, the overall system cost is often reduced when a knowledgeable designer concentrates costs in a few exceptionally stable components whose proven minimaldeviation load and environmental stability can often eliminate the necessity of additional compensating circuitry or temperature-controlling systems. The higher reliability and better overall system performances also achieve excellent product results in the field, enhancing market acceptance and product reputation. Designers often unnecessarily pay for tighter tolerances than required simply to accommodate the resistance stability shifts they know to be imminent in an application due to the large application-related changes in the components they selected. Selection of a high-stability component like the CSM in these applications eliminates the need for shift allowance due to planned instability and allows the use of looser initial tolerances than would be necessary with current-sensing resistors based on other technologies. The Key Applications Applications requiring accuracy and repeatability under stress conditions such as the following: Switching and linear power supplies Precision current-sensing Power management systems Feedback circuits Power amplifiers Measurement instrumentation Precision instrumentation amplifiers Medical and automatic test equipment Satellites and aerospace systems Commercial and Military avionics Test and measurement equipment Electronic scales For technical questions, contact Document Number: foil@vishaypg.com Revision: 3-May-12

3 FGURE 2 - DMENSONS AND MPRNTNG in inches (millimeters) CSM2512 DMENSONS (1) CSM3637 DMENSONS (1) H H A L T B W A L T W B CSM2512 LAND PATTERN CSM3637 LAND PATTERN 1 E 1 e E 1 E2 1 E 2 Kelvin Connection 1, 2 - Current E 1, E 2 - Sense a 2 d b c a 2 d b c DMENSONS - TOLERANCES ±.1 (±.254), * ±.15 (±.381) MODEL RESSTANCE RANGE (m ) L W H T A B 1 to < 5.87 (2.21) CSM to < 7.25 (6.35).125 (3.175).25 (.635).47 (1.194) 7 to 2.3 (.762).3 (.762)*.32 (.813)* CSM to < 2.36 (9.144).37 (9.398).25 (.635).138 (3.55).61 (1.55).32 (.813) 2 to 2.36 (9.144).37 (9.398).25 (.635).86 (2.184).61 (1.549).32 (.813) LAND PATTERN DMENSONS - TOLERANCES ±.3 (±.76) MODEL RANGE a b c d e R1 to R49.12 (3.5).145 (3.68).45 (1.14).21 (.53).55 (1.39).5 (1.27) CSM2512 R5 to R69.83 (2.1).145 (3.68).45 (1.14).21 (.53).55 (1.39).125 (3.17) R7 to R2.65 (1.65).145 (3.68).45 (1.14).21 (.53).55 (1.39).16 (4.6) CSM3637 R1 to R (4.27).39 (9.91).66 (1.68).24 (.61) -.74 (1.88) R2 to R2.116 (2.95).39 (9.91).66 (1.68).24 (.61) (4.52) Note (1) White dot indicates top side of part for mounting purposes Document Number: 6737 For technical questions, contact Revision: 3-May-12 foil@vishaypg.com 3

4 TABLE 2 - CSM SERES PERFORMANCE SPECFCATONS TEST CONDTONS ML-PRF-49465B R LMTS CSM2512/CSM3637 TYPCAL R LMTS MAXMUM R LMTS Thermal Shock - 55 C to + 15 C, 1 cycles, 15 min at each extreme ± (.5 % +.5R).1 %.3 % Load Life Stability 2 h, 7 C at rated power ± (1. % +.5R).2 %.5 % Bias Humidity + 85 C, 85 % humidity 1 % bias, 1 h ± (.5 % +.5R).5 %.2 % Short Time Overload 5 x rated power for 5 s (See note (3) from table 1) ± (.5 % +.5R).1 %.2 % High Temperature Exposure 1 h, 17 C ± (1. % +.5R).2 %.3 % Low Temperature Storage - 65 C for 24 h ± (.5 % +.5R).5 %.1 % Moisture Resistance ML-STD-22, method 16, power, 7a and 7b not required ± (.5 % +.5R).2 %.5 % Shock 1 g, 6 ms, 5 pulses ± (.1 % +.5R).2 %.5 % Vibration (1 Hz to 2 Hz) 2 g ± (.1 % +.5R).2 %.5 % Resistance to Soldering Heat 1 s to 12 s at + 26 C ± (.25 % +.5R).5 %.1 % Solderability ML-STD % coverage - - FGURE 3 - LOAD LFE RESULTS OF CSM2512 R/R (ppm) CSM2512 R5 Load Life +7C (15 units) Time (Hours) For technical questions, contact Document Number: foil@vishaypg.com Revision: 3-May-12

5 FGURE 4 - THERMAL SHOCK RESULTS OF CSM3637 AND CSM Thermal Shock (-55 C to +15 C) x 1 Cycles 2 Units Each Type and Value 15 1 R/R (ppm) CSM3637 R1 CSM3637 R2 CSM2512 R1 CSM2512 R2 Type and Value FGURE 5 - BAS HUMDTY RESULTS OF CSM3637 AND CSM Bias Humidity % RH 1 Units Each Type and Value R/R (ppm) CSM3637 R2 CSM3637 R1 CSM2512 R1 CSM2512 R2 Type and Value Document Number: 6737 For technical questions, contact Revision: 3-May-12 foil@vishaypg.com 5

6 FGURE 6 - PULSE TEST CSM3637 R5 Test - 1 units (5 Pulses of 5 3 A, 1 A) Current (A) sec Average Resistance Deviation: 696 ppm STD = 35 ppm, Measurement Error =.5R 1 sec Time (sec) FGURE 7 - PULSE TEST CSM3637 R5 Pulse Test - 1 units (35 Pulses of.2 2 A,.5 3 A) 25 Average Resistance Deviation: 13.3 ppm STD = 27.3 ppm, Measurement Error =.5R Current (A) msec.5 msec Time (msec) For technical questions, contact Document Number: foil@vishaypg.com Revision: 3-May-12

7 TABLE 3 - GLOBAL PART NUMBER NFORMATON (1) NEW GLOBAL PART NUMBER: A1487R124BR (preferred part number format) DENOTES PRECSON VALUE CHARACTERSTCS A R = = standard 9 = lead (Pb)-free 1 to 999 = custom A R B R PRODUCT CODE RESSTANCE TOLERANCE PACKAGNG 1487 = CSM = CSM3637 Note (1) For non-standard requests, please contact application engineering B = ±.1 % C = ±.25 % D = ±.5 % F = ± 1. % FOR EXAMPLE: ABOVE GLOBAL ORDER A1487 R124 B R: TYPE: CSM2512 VALUE: 124. m ABSOLUTE TOLERANCE: ±.1 % TERMNATON: standard tin/lead PACKAGNG: tape and reel HSTORCAL PART NUMBER: CSM2512 R124 B B T (will continue to be used) W = waffle R = tape and reel CSM2512 R124 B B T MODEL OHMC VALUE ABS. TOLERANCE TERMNATON PACKAGNG.124 B = ±.1 % C = ±.25 % D = ±.5 % F = ± 1. % S = lead (Pb)-free B = tin/lead T = tape and reel W = waffle pack Document Number: 6737 For technical questions, contact Revision: 3-May-12 foil@vishaypg.com 7

TABLE 1 - SPECIFICATIONS PARAMETER CSM2512 CSM3637

TABLE 1 - SPECIFICATIONS PARAMETER CSM2512 CSM3637 Bulk Metal Technology High Precision, Current Sensing, Power Surface Mount, Metal Strip Resistor with Resistance Value from 1 mω, Rated Power up to 3 W and TCR to ± 15 ppm/ C Maximum No minimum order quantity