PL IA NT CO M *R oH S Features Applications Thick film technology Power supplies Power rating of 2 watts at 70 C Stepper motor drives RoHS compliant* CRM2512 - Pulse Resistant Power Resistor Electrical Characteristics General Information Power Rating @ 70 C The Bourns(R) CRM2512 Series is a thickfilm 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 inrush current limiting. 2W Operating Temperature Range -55 C to +155 C Derated to Zero Load at +155 C Maximum Working Voltage 0.047 to 0.91 ohms 1.0 ohm to 1.0 megohm 3017 mV 600 V Insulation Resistance > 1000 megohms Resistance Range 0.047 - 0.91 ohm (E24 Values) 1.0 - 9.1 ohms (E24 Values) 10.0 ohms - 1 megohm (E24 + E96 Values) Resistance Tolerance Characteristic Data Temperature Coefficient 0.047 to 0.091 ohms 0.100 to 0.91 ohms 1.0 ohm to 1 megohm 10 ohms to 1 megohm 150 PPM/C 100 PPM/C 200 PPM/C 100 PPM/C For Standard Values Used in Capacitors, Inductors, and Resistors, click here. Load Life (1000 hours) 1 % Tolerance 5 % Tolerance <1% <3% Short Term Overload 1 % Tolerance 5 % Tolerance <1% <2% Thermal Shock 1 % Tolerance 5 % Tolerance Recommended Solder Pad Layout L R Max. Test 1 %, 5 % B < 0.5 % <1% Product Dimensions A DIMENSIONS: MM (INCHES) 6.3 0.20 (0.248 0.008) 3.1 0.20 (0.122 0.008) TOP SIDE Cu TRACE SENSING TRACE Model CRM2512 A B L 3.7 (0.146) 2.45 (0.096) 2.7 (0.106) 0.6 0.20 (0.024 0.008) 0.6 0.20 (0.024 0.008) 1.8 0.20 (0.070 0.008) Soldering Profile Derating Curve Peak 260 +5/-0 C 230 C or higher 200 180 C 150 Power Ratio (%) Temperature (C) 250 Pre-heating Zone 150 C 90 30 seconds 100 -55 30 10 seconds Heating Time *RoHS Directive 2002/95/EC Jan 27, 2003 including Annex. Specifications are subject to change without notice. Customers should verify actual device performance in their specific applications 70 155 Ambient Temperature (C) Soldering Zone 50 100 CRM2512 - Pulse Resistant Power Resistor Pulse Load Characteristics (R > 1 Ohm) PEAK POWER (W) 1000 100 10 1 0.0001 0.001 0.01 1.0 SURGE DURATION (S) 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) * W = 200 PPM/C * Z = 150 PPM/C * X = 100 PPM/C Resistance Value R <1 ohm (1 % or 5 % Tolerance: "R" (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) Packaging * E = 4000 pieces on 180 mm (7 inch) reel Termination * LF = Tin-plated (RoHS Compliant) Specifications are subject to change without notice. Customers should verify actual device performance in their specific applications CRM2512 - Pulse Resistant Power Resistor Packaging Dimensions (Conforms to EIA RS-481A) PAPER TAPE TOP TAPE 1.5 +0.1/-0 DIA. (0.059 +0.004/-0) 1.5 (0.059) DIA. MIN. 1.75 0.1 (0.069 0.004) 5.5 0.05 (0.217 0.002) 13.0 1.0 (0.512 0.039) DIA. 180 +0/-3 (7.09 +0/-0.118) DIA. 12.0 0.2 (0.472 0.008) RESISTOR 3.60 0.20 (0.142 0.008) 0.85 0.15 (0.033 0.006) 4.0 0.1 (0.157 0.004) 2.0 0.05 (0.079 0.002) 6.9 0.2 (0.272 0.008) 4.0 0.05 (0.157 0.002) USER DIRECTION OF FEED DIMENSIONS: 60.0 (2.362) MIN. DIA. MM (INCHES) REV. 05/11 Specifications are subject to change without notice. Customers should verify actual device performance in their specific applications 15.4 2.0 (0.606 0.079) 13.0 1.0 (0.512 0.039)