R100 Features Applications n Thick film technology n Current sensing n Power rating of 2 watts at 70 C n Power supplies n Low resistance value available n Stepper motor drives n RoHS compliant* n Snubber resistor for flyback power supplies CRM2512 - High Power Current Sense Chip Resistors General Information The Bourns CRM2512 Series is a thick film power resistor with a rating of 2 watts in a standard 2512 chip format. This product has a very wide resistance range, making it suitable for different applications in power supply circuits including current sensing and current limiting. Electrical Characteristics Model CRM2512 Characteristic (0.047 to 0.91 W) (0 W,1 W to 1 M W) Power Rating 70 C 2 W Operating Temp. Range -55 C to +155 C Derated to Zero Load at +155 C Maximum Working Voltage 1349 mV 300 V Maximum Overload Voltage 2698 mV 600 V Insulation Resistance > 1000 MW 0.047 - 0.91 W 1 W - 9.76 W 10 W - 1 MW 0 W, 1.0 - 1 MW Resistance Range (E24 Values) (E96 + E24 Values) (E96 + E24 Values) (E24 Values) Resistance Tolerance 1 % & 5 % 1 % 1 % 5 % 100 PPM/C, Temperature Coefficient 100 PPM/C 100 PPM/C 200 PPM/C 200 PPM/C Zero Ohm Jumper 6A <0.02 W Max. Rated Current Notes: 2 2 (1) CRM2512 2 W loading with total solder pad and trace size of 300 mm . (3) Jumper (0 W): Rated current 6 A maximum with 300 mm pad. 1/2 (2) E = (PxR) Temperature coefficient is not applicable. E: Working Voltage (V) P: Rated Power (W) R: Resistance Value (W) For Standard Values Used in Capacitors, Inductors, and Resistors, click here. Environmental Characteristics Characteristic Data Moisture Sensitivity Level .........................1 Test R Max. ESD Classification (HBM) .....................N/A Load Life (1000 hours) 1 % Tolerance < 1 % 5 % Tolerance < 3 % Short Term Overload 1 % Tolerance < 1 % 5 % Tolerance < 2 % Thermal Shock 1 % Tolerance < 0.5 % 5 % Tolerance < 1 % WARNING Cancer and Reproductive Harm www.P65Warnings.ca.gov - *RoHS Directive 2002/95/EC Jan. 27, 2003 including annex and RoHS Recast 2011/65/EU June 8, 2011. Specifications are subject to change without notice. Users should verify actual device performance in their specific applications. The products described herein and this document are subject to specific legal disclaimers as set forth on the last page of this document,www.bourns.com/docs/legal/disclaimer.pdf and at . *RoHS COMPLIANT VERSIONS AVAILABLE *RoHS COMPLIANT LEAD FREE LEAD FREE VERSIONS ARE RoHS COMPLIANT* CRM2512 - High Power Current Sense Chip Resistors Product Dimensions Recommended Solder Pad Layout Derating Curve 6.3 0.20 2.45 (0.248 0.008) (.096) 100 3.1 0.20 TOP SIDE (0.122 0.008) 3.7 (.146) 0.6 0.20 0.6 0.20 (0.024 0.008) (0.024 0.008) -55 70 155 7.6 Ambient Temperature (C) (.299) 1.8 0.20 (0.070 0.008) MM DIMENSIONS: (INCHES) How to Order CRM 2512 - F X - R100 E LF Model (CRM = Precision Chip Resistor) Size 2512 = 2512 Size Resistance Tolerance F = 1 % J = 5 % TCR (PPM/C - See Electrical Characteristics chart) W = 200 PPM/C X = 100 PPM/C / = Jumper Resistance Value 1 % or 5 % Tolerance: R <1 ohm ..............R represents decimal point followed by three significant digits (example: R100 = 0.100 ohm) 1% Tolerance: <100 ohms ...........R represents decimal point (example: 24R3 = 24.3 ohms) 100 ohms ...........First three digits are significant, fourth digit represents number of zeros to follow (example: 8252 = 82.5K ohms) 5% Tolerance: <10 ohms .............R represents decimal point (example: 4R7 = 4.7 ohms) 10 ohms .............First two digits are significant, third digit represents number of zeros to follow (example: 474 = 470K ohms) 0 ohm Jumper ......000 Packaging E = 4000 pieces per 180 mm (7 inch) reel Termination LF = Tin-plated (RoHS Compliant) Specifications are subject to change without notice. Users should verify actual device performance in their specific applications. The products described herein and this document are subject to specific legal disclaimers as set forth on the last page of this document,www.bourns.com/docs/legal/disclaimer.pdf and at . Power Ratio (%)