CRCW....-37 e3 Vishay Lead (Pb)-Free Thick Film, Rectangular Chip Resistors FEATURES High pulse performance (time/power) Metal glaze on high quality ceramic Protective overglaze Lead (Pb)-free solder contacts on Ni barrier layer Pure tin plating provides compatibility with lead (Pb)-free and lead containing soldering processes STANDARD ELECTRICAL SPECIFICATIONS SIZE POWER RATING RATED TEMPERATURE RESISTANCE TOLERANCE MODEL P RANGE E-SERIES VOLTAGE COEFFICIENT 70 C % W V ppm/K INCH METRIC CRCW1206-37 1206 3216 0.25 200 CRCW1210-37 1210 3225 0.33 200 200 10 5R1 to 10M E24 CRCW2512-37 2512 6332 1.0 500 Notes: These resistors do not feature a limited lifetime when operated within the permissible limits. However, resistance value drift increasing over operating time may result in exceeding a limit acceptable to the specific application, thereby establishing a functional lifetime Marking and packaging: see appropriate catalog or web pages Power rating depends on the max. temperature at the solder point, the component placement density and the substrate material TECHNICAL SPECIFICATIONS PARAMETER UNIT CRCW1206-37 CRCW1210-37 CRCW2512-37 (2) Rated Dissipation at P W 0.25 0.33 1.0 70 Rated Voltage U AC/DC V 200 200 500 max. Insulation Voltage U (1 Min) V > 300 ins (1) Thermal Resistance K/W 220 140 65 Category Temperature Range C - 55 to + 155 Weight mg 10 16 40.5 Notes: (1) For size 1206 the measuring conditions are in acc. to EN 140401-802. For all other sizes the result depends on the solder pad dimensions. (2) The power dissipation on the resistor generates a temperature rise against the local ambient, depending on the heat flow support of the printed-circuit board (thermal resistance). The rated dissipation applies only if the permitted film temperature of 155 C is not exceeded. www.vishay.com For technical questions, contact: filmresistors.thickfilmchip vishay.com Document Number: 20045 1 Revision: 28-May-08CRCW....-37 e3 Lead (Pb)-Free Thick Film, Rectangular Chip Resistors Vishay PART NUMBER AND PRODUCT DESCRIPTION (1) PART NUMBER: CRCW120622K0KNEA37 C R C W 1 2 0 6 2 2 K 0 K N E A 3 7 (2) MODEL VALUE TOLERANCE TCR PACKAGING SPECIAL CRCW1206 R = Decimal K = 10 % N = 200 ppm/K EA Up to 2 digits CRCW1210 K = Thousand EB 37 = Non-trimmed CRCW2512 M = Million EC EG EH EI EL PRODUCT DESCRIPTION: D25/CRCW1206-37 200 22K0 10 % ET1 e3 D25/CRCW1206 200 22K0 10 % ET1 e3 (2) MODEL TCR RESISTANCE VALUE TOLERANCE VALUE LEAD (Pb)-FREE PACKAGING CRCW1206 200 ppm/K 10R = 10 10 % ET1 e3 = Pure tin CRCW1210 562R = 562 ET5 termination CRCW2512 10K = 10 k ET6 finish 1M = 1 M E67 E82 EG1 E20 Notes: (1) Preferred way for ordering products is by use of the PART NUMBER (2) Please refer to table PACKAGING, see below PACKAGING REEL PACKAGING CODE MODEL TAPE PIECES/ DIAMETER PITCH PART NUMBER PRODUCT DESC. WIDTH REEL PAPER BLISTER PAPER BLISTER 180 mm/7 4 mm 5000 EA EI ET1 EG1 CRCW1206-37 8 mm 285 mm/11.25 4 mm 10 000 EB ET5 330 mm/13 4 mm 20 000 EC EL ET6 E20 180 mm/7 4 mm 5000 EA ET1 CRCW1210-37 12 mm 285 mm/11.25 4 mm 10 000 EB ET5 330 mm/13 4 mm 20 000 EC ET6 8 mm 2000 EG E67 CRCW2512-37 12 mm 180 mm/7 4 mm 4000 EH E82 Document Number: 20045 For technical questions, contact: filmresistors.thickfilmchip vishay.com www.vishay.com Revision: 28-May-08 2