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Document overview

  • Manufacturer or author: Provided By ALLDATASHEET.COM(FREE DATASHEET DOWNLOAD SITE)
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Technical content

Features

■ Thick fi lm technology ■ Power rating of 2 watts at 70 °C ■ RoHS compliant*

Applications

■ Power supplies ■ Stepper motor drives CRM2512 - Pulse Resistant Power Resistor *RoHS Directive 2002/95/EC Jan. 27, 2003 including annex and RoHS Recast 2011/65/EU June 8, 2011. Specifi cations are subject to change without notice. Users should verify actual device performance in their specifi c applications. The device characteristics and parameters in this data sheet can and do vary in different applications and actual device performance may vary over time. General Information The Bourns® CRM2512 Series is a thick- fi lm 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. *RoHS COMPLIANT DIMENSIONS: MM (INCHES)

Electrical Characteristics

Test ΔR 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 % 6.3 ± 0.20 (0.248 ± 0.008) TOP SIDE 3.1 ± 0.20 (0.122 ± 0.008) 0.6 ± 0.20 (0.024 ± 0.008) 1.8 ± 0.20 (0.070 ± 0.008) Ambient Temperature (°C) 70 155 100 -55 Power Ratio (%) Recommended Solder Pad Layout Soldering Profi le 100 150 200 250 Temperature (°C) 90 ± 30 seconds Pre-heating Zone 150 °C 230 °C or higher Peak 260 +5/-0 °C 180 °C 30 ± 10 seconds Heating Time Soldering Zone For Standard Values Used in Capacitors, Inductors, and Resistors, click here. Notes: (1) CRM2512 2 W loading with total solder pad and trace size of 300 mm2. (2) E = (PxR)1/2 E: Working Voltage (V); P: Rated Power (W); R: Resistance Value (Ω) (3) Jumper (0 Ω): Rated current 6 A maximum with 300 mm2 pad. Characteristic Model CRM2512 (0.110 to 0.91 Ω) Model CRM2512 (0 Ω, 1.0 Ω to 1.0 MΩ) 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 MΩ Resistance Range 0.110 - 0.91 Ω (E24 Values) 0 Ω, 1.0 - 1 MΩ (E24 Values) 1 Ω - 9.1 Ω (E24 Values) 10 Ω - 1 MΩ (E96 Values) Resistance Tolerance ±1 % & ±5 % ±5 % ±1 % Temperature Coeffi cient ±100 PPM/°C ±200 PPM/°C ±100 PPM/°C 7.6 (.299) 3.7 (.146) 2.45 (.096)

Specifi cations are subject to change without notice. Users should verify actual device performance in their specifi c applications. The device characteristics and parameters in this data sheet can and do vary in different applications and actual device performance may vary over time. CRM2512 - Pulse Resistant Power Resistor Pulse Load Characteristics (R > 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 Resistance Value R <1 ohm (1 % or 5 % Tolerance: “R” (decimal point) followed by three signifi cant digits (example: R100 = 0.100 ohm 1% Tolerance: (example: 8252 = 82.5K ohms) 5% Tolerance: (example: 474 = 470K ohms) Packaging
  • E = 4000 pieces on 180 mm (7 inch) reel Termination
  • LF = Tin-plated (RoHS Compliant) 1000 100 0.0001 0.001 SURGE DURATION (S) PEAK POWER (W) 0.01 1.0

REV. 03/13 Specifi cations are subject to change without notice. Users should verify actual device performance in their specifi c applications. The device characteristics and parameters in this data sheet can and do vary in different applications and actual device performance may vary over time. CRM2512 - Pulse Resistant Power Resistor Packaging Dimensions (Conforms to EIA RS-481A) 3.60 ± 0.20 (0.079 ± 0.002) 4.0 ± 0.05 (0.157 ± 0.004) 1.5 +0.1/-0 (0.059) DIA. MIN. 0.85 ± 0.15 (0.033 ± 0.006) 6.9 ± 0.2 (0.272 ± 0.008) 5.5 ± 0.05 (0.217 ± 0.002) 1.75 ± 0.1 (0.069 ± 0.004) 12.0 ± 0.2 (0.472 ± 0.008) TOP TAPE PAPER TAPE RESISTOR USER DIRECTION OF FEED 60.0 (2.362) MIN. DIA. DIA. 180 +0/-3 (7.09 +0/-0.118) 13.0 ± 1.0 (0.512 ± 0.039) DIA. 15.4 ± 2.0 (0.606 ± 0.079) 13.0 ± 1.0 (0.512 ± 0.039) DIMENSIONS: MM (INCHES)