R100 Features Applications Thick lm technology Current sensing Power rating of 2 watts at 70 C Power supplies Low resistance value available Stepper motor drives RoHS compliant* Snubber resistor for yback power supplies CRM2512 - High Power Current Sense Chip Resistors General Information Additional Information The Bourns CRM2512 Series is a thick film power resistor with a rating of 2 watts in Click these links for more information: 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. PRODUCT TECHNICAL INVENTORY SAMPLES CONTACT SELECTOR LIBRARY Electrical Characteristics Model CRM2512 Characteristic (0.047 to 0.91 )(0 ,1 to 1 M ) 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 3017 mV 600 V Insulation Resistance > 1000 M 0.047 - 0.91 1 - 9.76 10 - 1 M 0 , 1.0 - 1 M 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 Max. Rated Current Notes: 2 2 (1) CRM2512 2 W loading with total solder pad and trace size of 300 mm . (3) Jumper (0 ): 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 () For Standard Values Used in Capacitors, Inductors, and Resistors, click here. Environmental Characteristics Characteristic Data Moisture Sensitivity Level .........................1 Test R Max. 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 % *RoHS Directive 2015/863, Mar 31, 2015 and Annex. WARNING Specifications are subject to change without notice. Users should verify actual device performance in their specific Cancer and Reproductive Harm applications. The products described herein and this document are subject to specific legal disclaimers as set forth on the last www.P65Warnings.ca.gov page of this document, and at www.bourns.com/docs/legal/disclaimer.pdf. 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 (.299) 1.8 0.20 Ambient Temperature (C) (0.070 0.008) -OR- MM 0.9 0.25 DIMENSIONS: (INCHES) (0.035 0.010) FOR RESISTANCE VALUES LOWER THAN 1 OHM 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) Soldering Profile 250 Peak 260 +5/-0 C 230 C or higher 200 Pre-heating Zone 180 C 150 150 C 90 30 seconds Specications are subject to change without notice. 100 Users should verify actual device performance in their 30 10 seconds specic applications. Soldering Zone The products described herein and this document are subject to specic legal disclaimers as set forth on the 50 Heating Time last page of this document, and at www.bourns.com/docs/legal/disclaimer.pdf. Temperature (C) Power Ratio (%)