Low Value Current Sense Flat Chip Resistor LR Series • Resistance range from 0.002Ω up to 1Ω • Standard Sn/Pb and Pb lead-free terminations available • High power dissipation at 70°C • Tolerances to ±1% Electrical Data Resistance Range1 Size Tolerance F, G, J, K Tolerance J, K TCR2 (ppm/°C) Tolerance K 1206 0.003 to 1W 2010 0.010 to 1W 0.003 to 1W 0.002 to 1W 2512 0.002 to 1W 1 2 Power Rating at 70°C (Watts) Dielectric Withstanding Voltage (V) 0.5 ±100 Maximum Current (Amps) Operating Temperature Pad and Trace Area for Max Power Rating @ 70°C 16 200 1.0 30mm2 -55°C to +150°C 22 2.0 32 100mm2 300mm2 Non-standard resistance values available Contact factory for TCR information on values under 0.05ohms Outline Dimensions D L W Solder Plating Ni Barrier Layer H Protective Overcoat Cu Wraparound Termination Cu Termination E Alumina Substrate 1206 2010 2512 in. mm in. mm in. mm. L 0.126 ± 0.012 3.20 ± 0.305 0.206 ± 0.015 5.23 ± 0.38 0.256 ± 0.015 6.50 ± 0.38 W 0.064 ± 0.008 1.63 ± 0.203 0.104 ± 0.010 2.64 ± 0.25 0.128 ± .010 3.25 ± 0.25 H 0.024 ± 0.004 0.61 ± 0.102 0.029 ± 0.004 0.74 ± 0.1 0.029 ± 0.004 0.74 ± 0.1 D 0.019 ± 0.010 0.48 ± 0.25 0.019 ± 0.010 0.48 ± 0.25 0.019 ± 0.010 0.48 ± 0.25 E 0.019 ± 0.010 0.48 ± 0.25 0.019 ± 0.010 0.48 ± 0.25 0.019 ± 0.010 0.48 ± 0.25 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. Advanced Film Division • 4222 South Staples Street • Corpus Christi Texas 78411 USA Telephone: 361 992 7900 • Facsimile: 361 992 3377 • Email: [email protected] • Website: www.irctt.com A subsidiary of TT electronics plc LR Series Issue May 2009 Low Value Current Sense Flat Chip Resistor Environmental Performance Environmental Test Test Method Typical Performance MIL-STD-202 Method 107G Condition B, -55°C +150°C, 100 cycles ±0.5% + 1.0mW 6.25X Rated Power for 5 seconds ±0.5% + 0.5mW 100 hours @150°C ±0.5% + 0.5mW MIL-STD-202, Method 301 2.5X Rated Voltage, 1 minute ±0.25% + 0.5mW MIL-STD-202 Method 106 ±0.5% + 0.5mW 1000 hours, Rated Power, 70°C 1.5 hours on, 30 minutes off ±1.0% + 0.5mW 1 hour -65°C followed by rated power for 45 min ±0.5% + 0.5mW Resistance to Solder Heat MIL-STD-202 Method 210 260°C, 10 seconds ±0.5% + 1.0mW Insulation Resistance MIL-STD-202 Method 302 100VDC, 1 minute >1000 megohms Solderability MIL-STD-202 Method 208 245°C, 5 seconds 95% min Coverage Thermal Shock Short Time Overload High Temperature Exposure Dielectric Withstanding Voltage Moisture Resistance Load Life Low Temperature Operation Power Derating and Pulse/Surge Capability Power Derating Curve Pulse and Surge Capability Surge Power Watts % Of Rated Power 100 50 10 25° 70° 150° Temperature in °C 70 50 30 20 10 7 5 3 300 µSec 1 mSec Ordering Procedure Prefix Average power dissipationnot to exceed normal 70°C rating LRC 25 12 2 wa tts LRC 20 10 1 wa tt LRC 12 06 0.5 watts 3 mSec 10 mSec 30 mSec 100 mSec 300 mSec 1 Sec Surge or Repetitive Pulse Duration Recommended Solder Pad Layout A LRC - LRF 1206LF - 01 - R020 - F Model LR for values > 0.025Ω LRF for values ≤ 0.025Ω B Size C 1206; 1206LF; 2010; 2010LF; 2512; 2512LF (LF=Lead Free Terminations) DIM. TCR Code 01 = ±100ppm/°C Resistance Code A 4-Digit resistance code. Ex: R050 = 0.050Ω; 1R00 = 1Ω Tolerance Code B F = ±1%, G = ±2%, J = ±5% C For additional information or to discuss your specific requirements, please contact our Applications Team using the contact details below. Advanced Film Division • 4222 South Staples Street • Corpus Christi Texas 78411 USA Telephone: 361 992 7900 • Facsimile: 361 992 3377 • Email: [email protected] • Website: www.irctt.com LR1206 LR2010 LR2512 in. 0.080 0.120 0.145 mm (2.0) (3.05) (3.7) in. 0.160 0.255 0.305 mm (4.0) (6.5) (7.75) in. 0.050 0.060 0.060 mm (1.25) (1.5) (1.5) LR Series Issue May 2009