General Purpose Thick Film IRC Advanced Film Division Chip Resistor Organic WCR Series Wrap- Protection around termination Tolerances to 0.5% Pb-free Plating TCR down to 50 ppm/C Zero ohm jumpers available Wide ohmic range 1 ohm to 22M ohm Glass Passivation Now supplied with Pb-free terminations Nickel Thick Film Barrier Element Specications Ohmic Range Packaging Rated Max. Max. TCR Power at P/N Working Overload (ppm/C) 70C Voltage Voltage Carrier (milliwatts) 5% 2% 1% 0.5% Qty. Tape 200 4R7-1M N/A N/A N/A Card- WCR0402 100 N/A N/A 10R-1M N/A 63 50 100 10K board 50 N/A N/A N/A N/A 400 1R0-9R76, 1M1-10M 1R0-9R76, 1M1-10M 1R0-9R76 1R0-9R76 200 10R-1M N/A N/A N/A Card- WCR0603 100 50 100 5K 100 N/A 10R-1M 10R-1M N/A board 50 N/A N/A N/A 1R0-1M 400 1R0-9R76, 6M2-22M N/A 1R0-9R76, 1M1-10M N/A 200 10R-5.6M 1R0-10M N/A N/A Card- WCR0805 125 150 200 5K 100 N/A N/A 10R-976K N/A board 50 N/A N/A N/A 10R-1M 400 1R0-9R76, 6M2-22M N/A 1R0-9R76, 1M1-10M N/A 200 10R-5M6 1R0-10M N/A N/A Card- WCR1206 250 200 400 5K 100 N/A N/A 10R-976K N/A board 50 N/A N/A N/A 10R-1M 400 1R0-9R76, 1M1-10M N/A 1R0-9R76, 1M1-10M N/A WCR1210 200 10R-1M 10R-1M N/A N/A 250 200 400 Plastic 4K 100 N/A N/A 10R-976K 10R-976K 400 1R0-9R76, 6M2-22M N/A 1R0-9R76, 1M1-10M N/A 200 10R-5M6 10R-1M N/A N/A WCR2010 500 200 400 Plastic 4K 100 N/A N/A 10R-1M N/A 50 N/A N/A N/A 10R-976K 400 1R0-9R76, 6M2-22M N/A 1R0-9R76, 1M1-10M N/A 200 10R-5M6 10R-1M N/A N/A WCR2512 1000 200 400 Plastic 4K 100 N/A N/A 10R-1M N/A 50 N/A N/A N/A 10R-976K General Note IRC reserves the right to make changes in product specification without notice or liability. All information is subject to IRCs own data and is considered accurate at time of going to print. A subsidiary of TT electronics plc IRC Advanced Film Division Telephone: 361 992 7900 Facsimile: 361 992 3377 Email: afdsales irctt.com Website: www.irctt.com WCR Series Issue February 2005 General Purpose Thick Film IRC Advanced Film Division Chip Resistor Dimensions (inches) L a H W SIDE TOP BO TT OM b Model L W H a b WCR0402 0.0390.002 0.0200.002 0.0140.002 0.0080.004 0.0100.002 WCR0603 0.0630.008 0.0320.008 0.0200.005 0.0120.009 0.0120.009 WCR0805 0.0790.008 0.0490.008 0.0200.005 0.0160.009 0.0120.009 WCR1206 0.1250.009 0.0630.008 0.0240.005 0.0200.013 0.0160.008 WCR1210 0.1260.008 0.1020.008 0.0240.004 0.0200.012 0.0160.008 WCR2010 0.1970.008 0.0980.008 0.0240.004 0.0200.012 0.0160.008 WCR2512 0.2480.008 0.1220.008 0.0240.004 0.0200.012 0.0160.008 Environmental Performance Test Conditions Test Method Max Change (5%) Max Change (1%) 5 Seconds Short Time Overload 2.0% 0.75% 2.5 X Rated Power 5 Cycles Temperature Cycling 0.5% 0.5% -55C to +125C 1000 Hours Humidity 40C 2C 3.0% 1.0% 90-95% RH 1000 Hours Load Life 3.0% 1.0% 70C 3C High Temperature 1000 Hours 1.0% 1.0% Exposure 125C 3C Low Temperature 1000 Hours 1.0% 1.0% Exposure -55C 3C 10 1 Seconds 260C Effects od Solder Heat 1.0% 0.75% 5C 3 0.5 Seconds 235C Solderablitiy 95% Min Coverage 95% Min Coverage 5C IRC Advanced Film Division Corpus Christi Texas 78411 USA Telephone: 361 992 7900 Facsimile: 361 992 3377 Email: afdsales irctt.com Website: www.irctt.com WCR Series Issue February 2005