General Purpose Thick Film Chip Resistor Organic Protection WCR Series • • • • • Tolerances to ±1% TCR down to ±100ppm/°C Zero ohm jumpers available Wide ohmic range from 1Ω to 10MΩ Now supplied with RoHS compliant terminations Wraparound termination Glass Passivation Nickel Barrier Thick Film Element Electrical Data IRC Type WCR0201 WCR0402 WCR0603 WCR0805 WCR1206 WCR1210 WCR2010 WCR2512 TCR (ppm/°C) Ohmic Range (Ω) ±5% ±1% ±300 10R - 91R 10R - 97R6 ±200 100R - 10M 100R - 1M ±400 1R0 - 10R 1R0 - 10R ±200 11R - 10M 11R - 100R ±100 N/A 101R - 1M0 ±400 1R0 - 10R 1R0 - 10R ±200 11R - 10M 11R - 100R ±100 N/A 101R - 1M0 ±400 1R0 - 10R 1R0 - 10R ±200 11R - 10M 11R - 100R ±100 N/A 101R - 1M0 ±400 1R0 - 10R 1R0 - 10R ±200 11R - 10M 11R - 100R ±100 N/A 101R - 1M0 ±400 1R0 - 10R 1R0 - 10R ±200 11R - 10M 11R - 100R ±100 N/A 101R - 1M0 ±400 1R0 - 10R 1R0 - 10R ±200 11R - 10M 11R - 100R ±100 N/A 101R - 1M0 ±400 1R0 - 10R 1R0 - 10R ±200 11R - 10M 11R - 100R ±100 N/A 101R - 1M0 Rated Power @ 70°C (milliwatts) Maximum Working Voltage (V) Maximum Overload Voltage (V) 50 25 50 63 50 100 100 50 100 125 150 200 Operating Temperature Range (°C) -55 to +155 250 200 400 250 200 400 500 200 400 1000 200 400 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. © IRC Advanced Film Division • 4222 South Staples Street • Corpus Christi Texas 78411 USA Telephone: 361 992 7900 • Facsimile: 361 992 3377 • Website: www.irctt.com A subsidiary of TT electronics plc WCR Series Issue December 2008 Sheet 1 of 3 General Purpose Thick Film Chip Resistor Environmental Data Test Conditions Test Method Max Change (5%) Max Change (1%) Short Time Overload 5 seconds 2.5 X Rated Power ±2.0% +0.1Ω ±1.0% +0.1Ω Temperature Cycling 5 Cycles -55°C to +125°C ±1.0% +0.1Ω ±0.5% +0.1Ω Humidity 240 Hours 40°C ±2° 90-95% RH ±3.0% +0.1Ω ±1.0% +0.1Ω Load Life 1000 Hours 70°C ±3° 1.5 hours on 30 minutes off ±3.0% +0.1Ω ±1.0% +0.1Ω 1000 Hours -55°C ±3° ±1.0% +0.1Ω ±1.0% +0.1Ω Effects of Solder Heat 10 ±1 Seconds 260°C ±5° ±1.0% +0.1Ω ±1.0% +0.1Ω Solderability 3 ±0.5 Seconds 235°C ±5° 95% Min Coverage 95% Min Coverage Low Temperature Exposure Physical Data (inches) L a TOP SIDE BO TT OM W H b Model L W H a b WCR0201 0.024±0.002 0.012±0.002 0.009±0.002 0.005±0.002 0.006±0.002 WCR0402 0.039±0.004 0.020±0.002 0.014±0.002 0.008±0.004 0.010±0.004 WCR0603 0.063±0.004 0.032±0.006 0.020±0.004 0.012±0.008 0.012±0.008 WCR0805 0.079±0.006 0.049±0.006 0.020±0.004 0.016±0.008 0.012±0.008 WCR1206 0.125±0.006 0.061±0.006 0.024±0.004 0.018±0.008 0.018±0.008 WCR1210 0.126±0.004 0.102±0.006 0.024±0.004 0.020±0.010 0.020±0.008 WCR2010 0.197±0.004 0.098±0.006 0.024±0.004 0.023±0.010 0.020±0.008 WCR2512 0.248±0.004 0.126±0.006 0.024±0.004 0.023±0.010 0.020±0.008 © IRC Advanced Film Division • 4222 South Staples Street • Corpus Christi Texas 78411 USA Telephone: 361 992 7900 • Facsimile: 361 992 3377 • Website: www.irctt.com WCR Series Issue December 2008 Sheet 2 of 3 General Purpose Thick Film Chip Resistor Power Derating Chart % Of Rated P ower 100 50 10 25° 70° 155° Temperature in °C Packaging Reel Physical Data A 60mm ±1 B C ø178mm ±2 W Size Tape Qty A (mm) B (mm) C (mm) W (mm) 0201 Paper 15K 2.0±0.5 13.0±0.5 21.0±0.5 10.0±1 0402 Paper 15K 2.0±0.5 13.0±0.5 21.0±0.5 10.0±1 0603 Paper 5K 2.0±0.5 13.0±0.5 21.0±0.5 10.0±1 0805 Paper 5K 2.0±0.5 13.0±0.5 21.0±0.5 10.0±1 1206 Paper 5K 2.0±0.5 13.0±0.5 21.0±0.5 10.0±1 1210 Paper 5K 2.0±0.5 13.0±0.5 21.0±0.5 10.0±1 2010 Paper 4K 2.0±0.5 13.0±0.5 21.0±0.5 13.8±1 2512 Plastic 4K 2.0±0.5 13.0±0.5 21.0±0.5 13.8±1 Ordering Data Sample Part Number WCR - WCR1206LF - 1001 - F - P - LT Model WCR00201LF, 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. Tolerance J = ±5%; G = ±2%, F = ±1% Tape Type P = Paper, E = Plastic Tape & Reel Packaging For additional information or to discuss your specific requirements, please contact our Applications Team using the contact details below. © IRC Advanced Film Division • 4222 South Staples Street • Corpus Christi Texas 78411 USA Telephone: 361 992 7900 • Facsimile: 361 992 3377 • Website: www.irctt.com WCR Series Issue December 2008 Sheet 3 of 3