Features Applications Thick lm technology Power supplies Power rating of 0.25, 0.5 or 1 watt at 70 C Stepper motor drives Strong pulse performance RoHS compliant* CRM0805/1206/2010 Chip Resistors Electrical Characteristics General Information Bourns CRM Series are thick lm chip Model Model Model resistors with high power ratings making Characteristic CRM0805 CRM1206 CRM2010 them suitable for different applications in power supply circuits including Power Rating 70 C 0.25 W 0.5 W 1 W current sensing, current limiting and Operating Temperature Range -55 C to +155 C high pulse resistance. Derated to Zero Load at +155 C Maximum Working Voltage Characteristic Data 0.047 to 0.91 ohms 477 mV 675 mV 954 mV 1.0 ohm to 1.0 megohm 150 V 200 V 200 V Test R Max. Insulation Resistance >1000 megohms Load Life (1000 hours) Resistance Range 0.047 - 1 megohm Rated Voltage 70 C (1.5 hrs. on, 0.5 hrs. off) Resistance Tolerance 1 %, 5 % 1 % Tolerance < 1 % Temperature Coef cient 5 % Tolerance < 3 % 0.047 to 0.091 ohms 150 PPM/C Short Term Overload 0.100 to 0.91 ohms 100 PPM/C (5 X Rated Power for 5 sec.) 1.0 ohm to 1 megohm 200 PPM/C (T olerance 5 %, E24 Values) 1 % Tolerance < 1 % 10 ohms to 1 megohm 100 PPM/C (T olerance 1 %, E96 Values) 5 % Tolerance < 2 % Thermal Shock Product Dimensions (5 Cycles: -55 C/30 min. L +25 C/2-3 min. +155 C/ 30 min. +25 C/2-3 min.) T 1 % Tolerance < 0.5 % MM DIMENSIONS: 5 % Tolerance < 1 % W (INCHES) D C Derating Curve Model L W C D T 100 2.00 0.15 1.20 0.15 0.40 0.20 0.40 0.20 0.50 0.10 CRM0805 (0.079 0.006) (0.047 0.006) (0.016 0.008) (0.016 0.008) (0.020 0.04) 3.10 0.15 1.60 0.15 0.50 0.25 0.50 0.25 0.55 0.10 CRM1206 (0.122 0.006) (0.063 0.006) (0.020 0.010) (0.020 0.010) (0.022 0.004) -55 70 155 5.00 0.20 2.50 0.20 0.60 0.25 0.60 0.25 0.60 0.10 CRM2010 (0.197 0.008) (0.098 0.008) (0.024 0.010) (0.024 0.010) (0.024 0.004) Ambient Temperature (C) Recommended Solder Pad Layout L B Model A B L 1.3 1.15 1.2 CRM0805 (0.051) (0.045) (0.047) A 1.8 1.3 2.1 CRM1206 (0.071) (0.051) (0.083) 3.0 1.5 3.8 Cu TRACE CRM2010 SENSING TRACE (0.118) (0.059) (0.149) MM DIMENSIONS: (INCHES) *RoHS Directive 2002/95/EC Jan 27, 2003 including Annex. Speci cations are subject to change without notice. Customers should verify actual device performance in their speci c applications. *RoHS COMPLIANT Power Ratio (%) CRM0805/1206/2010 Chip Resistors Soldering Pro le Resistance Value Table (0.047-0.91 ) 275 Code R Value Code R Value <1> Maximum of 20 seconds between 260 C peak +255 C and +260 C <1> 255 C R047 0.047 R200 0.200 225 R050 0.050 R300 0.300 220 C R060 0.060 R510 0.510 190 C 90 - 150 seconds R075 0.075 R750 0.750 175 150 C Ramp Down R082 0.082 R820 0.820 6 C/second R090 0.090 R910 0.910 125 60 - 120 seconds R100 0.100 10 seconds minimum 75 Ramp Up 3 C/second maximum 25 0 50 100 150 200 250 300 Time (seconds) Pulse Voltage Curve 10000 1000 CRM2010 CRM1206 100 CRM0805 10 1 10 100 1000 10000 100000 RESISTANCE (OHMS) Test Method: 1.2/50 s Waveform with 12 Ohm Resistor, 5 Pulses at 12 Second Intervals Speci cations are subject to change without notice. Customers should verify actual device performance in their speci c applications. VOLTS (V) Temperature (C)