General Purpose Thick Film Chip Resistor IRC Advanced Film Division WCR Series Organic Protection * Tolerances to 0.5% Wraparound termination 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 Barrier Thick Film Element Specifications Ohmic Range P/N TCR (ppm/C) 5% 2% 1% 0.5% Rated Power at 70C (milliwatts) Max. Working Voltage Max. Overload Voltage Packaging Carrier Tape Qty. WCR0402 200 100 50 4R7-1M N/A N/A N/A N/A N/A N/A 10R-1M N/A N/A N/A N/A 63 50 100 Cardboard 10K WCR0603 400 200 100 50 1R0-9R76, 1M1-10M 10R-1M N/A N/A 1R0-9R76, 1M1-10M N/A 10R-1M N/A 1R0-9R76 N/A 10R-1M N/A 1R0-9R76 N/A N/A 1R0-1M 100 50 100 Cardboard 5K WCR0805 400 200 100 50 1R0-9R76, 6M2-22M 10R-5.6M N/A N/A N/A 1R0-10M N/A N/A 1R0-9R76, 1M1-10M N/A 10R-976K N/A N/A N/A N/A 10R-1M 125 150 200 Cardboard 5K WCR1206 400 200 100 50 1R0-9R76, 6M2-22M 10R-5M6 N/A N/A N/A 1R0-10M N/A N/A 1R0-9R76, 1M1-10M N/A 10R-976K N/A N/A N/A N/A 10R-1M 250 200 400 Cardboard 5K WCR1210 400 200 100 1R0-9R76, 1M1-10M 10R-1M N/A N/A 10R-1M N/A 1R0-9R76, 1M1-10M N/A 10R-976K N/A N/A 10R-976K 250 200 400 Plastic 4K WCR2010 400 200 100 50 1R0-9R76, 6M2-22M 10R-5M6 N/A N/A N/A 10R-1M N/A N/A 1R0-9R76, 1M1-10M N/A 10R-1M N/A N/A N/A N/A 10R-976K 500 200 400 Plastic 4K WCR2512 400 200 100 50 1R0-9R76, 6M2-22M 10R-5M6 N/A N/A N/A 10R-1M N/A N/A 1R0-9R76, 1M1-10M N/A 10R-1M N/A N/A N/A N/A 10R-976K 1000 200 400 Plastic 4K General Note IRC reserves the right to make changes in product specification without notice or liability. All information is subject to IRC's own data and is considered accurate at time of going to print. (c) IRC Advanced Film Division Telephone: 361 992 7900 * Facsimile: 361 992 3377 * Email: afdsales@irctt.com * Website: www.irctt.com A subsidiary of TT electronics plc WCR Series Issue February 2005 General Purpose Thick Film Chip Resistor IRC Advanced Film Division Dimensions (inches) L a TOP SIDE BO TT OM W H 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%) Short Time Overload 5 Seconds 2.5 X Rated Power 2.0% 0.75% Temperature Cycling 5 Cycles -55C to +125C 0.5% 0.5% Humidity 1000 Hours 40C 2C 90-95% RH 3.0% 1.0% Load Life 1000 Hours 70C 3C 3.0% 1.0% High Temperature Exposure 1000 Hours 125C 3C 1.0% 1.0% Low Temperature Exposure 1000 Hours -55C 3C 1.0% 1.0% Effects od Solder Heat 10 1 Seconds 260C 5C 1.0% 0.75% Solderablitiy 3 0.5 Seconds 235C 5C 95% Min Coverage 95% Min Coverage (c) 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 General Purpose Thick Film Chip Resistor IRC Advanced Film Division % Rated Power Power Derating Chart Temperature in C Ordering Data Sample Part Number: WCR - WCR1206LF - 1001 - F - P - LT Model WCR0402LF, WCR0603LF, WCR0805LF, WCR1206LF, WCR1210LF, WCR2010LF, WCR2512LF Resistance 3-digit resistance code for tolerances G and J. 4-digit resistance code for tolerances F and D. Tape & Reel Packaging Tape Type (P=Paper, E=Plastic) Tolerance J=5%, G=2%, F=1, D=0.5% For additional information or to discuss your specific requirements, please contact our Applications Team using the contact details below. (c) 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