Low Value Current Sense Flat Chip Resistor LR Series Resistance range from 0.002 up to 1 Standard Sn/Pb and Pb lead-free terminations available High power dissipation at 70C Tolerances to 1% Electrical Data Resistance Power 1 Pad and Trace Area Dielectric Maximum Range 2 TCR Rating Operating for Max Power Size Withstanding Current Temperature (ppm/C) at 70C Voltage (V) (Amps) Rating 70C Tolerance Tolerance Tolerance (Watts) F, G, J, K J, K K 2 1206 0.003 to 1W 0.5 16 30mm 2 0.010 to 1W 0.003 to 1W 100 200 -55C to +150C 2010 0.002 to 1W 1.0 22 100mm 2 2512 0.002 to 1W 2.0 32 300mm 1 Non-standard resistance values available 2 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. L0.126 0.0123.20 0.3050.206 0.0155.23 0.380.256 0.015 6.50 0.38 W0.064 0.0081.63 0.2030.104 0.0102.64 0.250.128 .010 3.25 0.25 0.024 0.0040.61 0.1020.029 0.0040.74 0.10.029 0.004 0.74 0.1 H D0.019 0.0100.48 0.250.019 0.0100.48 0.250.019 0.010 0.48 0.25 E0.019 0.0100.48 0.250.019 0.0100.48 0.250.019 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 IRCs own data and is considered accurate at time of going to print. A subsidiary of TT electronics plc Advanced Film Division 4222 South Staples Street Corpus Christi Texas 78411 USA Telephone: 361 992 7900 Facsimile: 361 992 3377 Email: afdsales irctt.com Website: www.irctt.com LR Series Issue June 2010LRC 2010 1 watt LRC 1206 0.5 watts LRC 2512 2 watts Low Value Current Sense Flat Chip Resistor Environmental Performance Environmental Test Test Method Typical Performance MIL-STD-202 Method 107G Thermal Shock 0.5% + 1.0m Condition B, -55C +150C, 100 cycles 6.25X Rated Power for 5 seconds (1206, 2010 Size) Short Time Overload 0.5% + 0.5m 5X Rated Power for 5 seconds (2512 Size) High Temperature Exposure 100 hours 150C 0.5% + 0.5m MIL-STD-202, Method 301 Dielectric Withstanding Voltage 0.25% + 0.5m 2.5X Rated Voltage, 1 minute Moisture Resistance MIL-STD-202 Method 106 0.5% + 0.5m 1000 hours, Rated Power, 70C Load Life 1.0% + 0.5m 1.5 hours on, 30 minutes off Low Temperature Operation 1 hour -65C followed by rated power for 45 min 0.5% + 0.5m MIL-STD-202 Method 210 Resistance to Solder Heat 0.5% + 1.0m 260C, 10 seconds MIL-STD-202 Method 302 Insulation Resistance >1000 megohms 100VDC, 1 minute MIL-STD-202 Method 208 Solderability 95% min Coverage 245C, 5 seconds Power Derating and Pulse/Surge Capability Power Derating Curve Pulse and Surge Capability 100 70 50 Average power 30 dissipationnot to 20 exceed normal 50 70C rating 10 7 5 3 10 25 70 150 300 Sec 1 mSec 3 mSec 10 mSec 30 mSec 100 mSec 300 mSec 1 Sec Temperature in C Surge or Repetitive Pulse Duration Ordering Procedure Recommended Solder Pad Layout A Prefix LRC - LRF 1206LF - 01 - R020 - F Model LR for values > 0.025 B LRF for values 0.025 Size C 1206 1206LF 2010 2010LF 2512 2512LF (LF=Lead Free Terminations) TCR Code D6IM.L0R120L2R201 LR251 01 = 100ppm/C i0n.00.0805.12 0.14 A Resistance Code m)m()2.0()3.05 (3.7 4-Digit resistance code. Ex: R050 = 0.050 1R00 = 1 i0n.05.1605.25 0.30 B Tolerance Code m)m()4.0()6.5 (7.75 F = 1%, G = 2%, J = 5%, K = 10% i0n.00.0500.06 0.06 C m)m()1.25()1.5 (1.5 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: afdsales irctt.com Website: www.irctt.com LR Series Issue June 2010 % Of Rated Power Surge Power Watts