CSM Vishay Foil Resistors Bulk Metal(R) Technology High Precision, Current Sensing, Power Surface Mount, Metal Strip Resistor with Resistance Value from 2 m, Rated Power up to 3 Watts and TCR to 0 15 ppm/C FEATURES PR O DU CT * Ohmic Values: 2 m to 200 m Pb-free * Temperature coefficient: 15 ppm/C (3 m up) Available RoHS* * Tolerance: 0.1 % COMPLIANT Any value at any tolerance available within resistance range * Four terminal (Kelvin) design: allows for precision accurate measurements * Surface mount configuration * Power Rating: 1 to 3 Watts The CSM Series of low value current sense resistors provides power and precision in a four terminal, surface mount configuration. Its all welded construction is made up of a Bulk Metal(R) resistive element with plated copper terminations. Our Application Engineering Department is available to advise and make recommendations. * Terminal Finishes Available: Lead (Pb)-free Tin/Lead Alloy * For better performance please contact us FIGURE 1 - POWER DERATING CURVE IM PR O VE D For non-standard technical requirements and special applications, please contact us. * Maximum Current: up to 38 Amps Percent of Rated Power THROUGH HOLE * Thermal EMF: 3 V/C + 70 C 100 80 60 40 20 0 - 65 - 50 - 25 0 25 50 75 100 125 150 170 Ambient Temperature (C) TABLE 1 - PERFORMANCE SPECIFICATIONS PARAMETER Resistance Range Power Rating at 70 C Maximum Current CSM2512 CSM3637 3 m - 200 m 2 m - 200 m 1 Watt 3 Watts ( 2 m - 10 m) 2 Watts (> 10 m - 200 m) 18 Amps 38 Amps Tightest Tolerance Temperature Coefficient (- 55 C to + 125 C) 25 ppm/C (2 m - < 3 m) 15 ppm/C (3 m - 200 m) 15 ppm/C Operating Temperature Range Weight (maximum) 0.1 % - 55 C to + 125 C; ref. + 25 C 0.09 grams 0.29 grams * Pb containing terminations are not RoHS compliant, exemptions may apply Document Number: 63089 Revision: 06-Nov-06 For technical questions, contact: foil@vishay.com www.vishay.com 1 CSM Vishay Foil Resistors Bulk Metal(R) Technology High Precision, Current Sensing, Power Surface Mount, Metal Strip Resistor with Resistance Value from 2 m, Rated Power up to 3 Watts and TCR to 0 15 ppm/C FIGURE 2 - DIMENSIONS AND IMPRINTING in inches (millimeters) CSM3637 DIMENSIONS CSM2512 DIMENSIONS # PR O DU CT # H H A B A L L T W CSM3637 LAND PATTERN CSM2512 LAND PATTERN E1 I1 e W T E1 I1 E2 c d I2 I2 I Kelvin Connection I1, I2 - Current E1, E2 - Sense E2 c d b I b a a DIMENSIONS - TOLERANCES 0.010 ( 0.254), * 0.015 ( 0.381) RESISTANCE RANGE, m L W IM PR O VE D MODEL H T 3 to < 5 CSM2512 5 to < 7 0.25 (6.35) 2 to 200 0.360 (9.14) B 0.030* (0.762) 0.025* (0.635) 0.061 (1.55) 0.032 (0.813) 0.083 (2.108) 0.125 (3.175) 0.025 (0.635) 7 to 200 CSM3637 A 0.047 (1.194) 0.032 (0.813) 0.370 (9.4) 0.025 (0.635) 0.086 (2.18) LAND PATTERN DIMENSIONS - TOLERANCES 0.003 ( 0.076) MODEL a b c d e I CSM2512 0.125 (3.18) 0.130 (3.30) 0.030 (0.76) 0.020 (0.51) 0.055 (1.40) 0.065 (1.65) CSM3637 0.116 (2.95) 0.366 (9.30) 0.066 (1.68) 0.244 (0.61) - 0.178 (4.52) Note # White dot indicates top side of part for mounting purposes TABLE 2 - ORDERING INFORMATION MODEL RESISTANCE VALUE CSM2512 3 m - 200 m CSM3637 2 m - 200 m LETTER DESIGNATOR* TOLERANCE TERMINATION PACKAGING R B = 0.1 % C = 0.25 % D = 0.5 % F = 1.0 % S = Lead (Pb)-free B = Tin/Lead W = Waffle Pack T =Tape and Reel * Resistance Value in , is expressed by a series of 6 characters, 5 of with represent significant digits while the 6th letter designates the location of the comma or decimal. Example: 0R0100 = 0.010 SALES * ASIA/JAPAN: foilsales.asia@vishay.com * UK/HOLLAND/SCANDINAVIA: foilsales.eunorth@vishay.com * AMERICAS: foilsales.usa@vishay.com * GERMANY/CZECH REPUBLIC/AUSTRIA: foilsales.eucentral@vishay.com * FRANCE/SWITZERLAND/SOUTHERN EUROPE: foilsales.eusouth@vishay.com * ISRAEL: foilsales.israel@vishay.com www.vishay.com 2 For technical questions, contact: foil@vishay.com Document Number: 63089 Revision: 06-Nov-06 THROUGH HOLE B Legal Disclaimer Notice Vishay Notice Specifications of the products displayed herein are subject to change without notice. Vishay Intertechnology, Inc., or anyone on its behalf, assumes no responsibility or liability for any errors or inaccuracies. Information contained herein is intended to provide a product description only. No license, express or implied, by estoppel or otherwise, to any intellectual property rights is granted by this document. Except as provided in Vishay's terms and conditions of sale for such products, Vishay assumes no liability whatsoever, and disclaims any express or implied warranty, relating to sale and/or use of Vishay products including liability or warranties relating to fitness for a particular purpose, merchantability, or infringement of any patent, copyright, or other intellectual property right. The products shown herein are not designed for use in medical, life-saving, or life-sustaining applications. Customers using or selling these products for use in such applications do so at their own risk and agree to fully indemnify Vishay for any damages resulting from such improper use or sale. Document Number: 91000 Revision: 08-Apr-05 www.vishay.com 1