LR12010

LRC-LRF_E.qxd 12/23/04 10:07 AM Page 1 Low Value Flat Chip Resistor LRC/LRF Series Welwyn Components • • • • • Standard 2512, 2010 and 1206 sizes Resistance values down to 0.003 ohms Leach resistant solder-plated copper wrap-around termination Low inductance - less than 0.2nH Standard EIA Tape - 1206 = 8mm; 2010 or 2512 = 12mm Electrical Data LR1206 Power rating at 70°C Resistance range Dielectric withstanding voltage TCR Resistance tolerance Temperature rise at rated power Pad and trace area for max power rating @ 70°C 2 LR2010 1.0 0R003 to 1R 200 ≤R005 5%, >R005 1, 2, 5% LR2512 1.5/2.0* 0R003 to 1R 200 watts ohms volts ppm/°C % °C mm2 0.5 0R010 to 1R 200 ±100 (Contact factory for value below 0.050 ohms) 40 30 80 30 90 100 *2 Watts with total solder pad and trace size of 300 mm Physical Data Dimensions (mm) Size LR1206 LR2010 LR2512 L 3.20±0.305 5.23±0.38 6.50±0.38 W 1.63±0.203 2.64±0.25 3.25±0.25 H (max) 0.8 0.8 0.8 D 0.48±0.25 0.48±0.25 0.48±0.25 D1 0.48±0.25 0.48±0.25 0.48±0.25 LR 1225 D W LR 1206 / 2010 / 2512 W H L H D D1 L Protective Overcoat Resistive Element Copper Termination Solder Plating Nickel Barrier Layer Copper Wraparound Termination Alumina Substrate General Note Welwyn Components reserves the right to make changes in product specification without notice or liability. All information is subject to Welwyn’s own data and is considered accurate at time of going to print. A subsidiary of TT electronics plc Issue E · 12.04 © Welwyn Components Limited · Bedlington, Northumberland NE22 7AA, UK Telephone: +44 (0) 1670 822181 · Facsimile: +44 (0) 1670 829465 · Email: info@welwyn-tt.com · Website: www.welwyn-tt.com 23 LRC-LRF_E.qxd 12/23/04 10:07 AM Page 2 Low Value Flat Chip Resistor LRC/LRF Series Welwyn Components Dimensions (mm) A LR1206 LR2010 LR2512 2.0 3.05 3.7 B 4.0 6.5 7.75 C 1.25 B A 1.5 C 1.5 (%) 100 80 Power Rating 60 40 20 0 25 70 Ambient temperature 150 (°C) Characteristics Thermal Shock Short Time Overload High Temperature Exposure Temperature Cycling Moisture Load Life Low Temperature Operation Low Temperature Storage Resistance to Solder Heat Leach Resistance Test Method MIL-STD-202 Method 107 Condition B, -65°C +125°C MIL-PRF-55342 MIL-PRF-55342 MIL-STD-883 Method 1010 Test Condition B MIL-PRF-55342 MIL-PRF-55342 Rated Power @ 70°C MIL-PRF-55342 -65°C, 100 Hours MIL-STD-202 Method 210 Molten Solder 250°C Performance ±0.5% ±0.5% ±0.5% ±0.25% ±0.5% ±1.0% ±0.5% ±0.5% ±0.25% 90 seconds minimum LRC 2512 2 1 w at t LRC 2010 1w 0.5 wat t LR C 12 06 0.25 5 w at w att t Note: For resistance values R025 and below part will be supplied as type LRF. Components must be mounted with resistance value marking face up to ensure correct resistance value and tolerance. Ordering Procedure Example: LRF2512 at 10 milliohms (hence flip-chip mounted) and 2% tolerance on a reel of 1800 pieces LRF2512–R01GW Type Mounting F Conventional (element up) Flip-chip (element down) Values > R025 Values < R025 Size Value (use IEC62 code) Tolerance (use IEC62 code) F G J 1% 2% 5% Packing W T1 Tape 1206 or 2010 2512 All sizes 3000/reel 1800/reel 1000/reel Standard © Welwyn Components Limited Bedlington, Northumberland NE22 7AA, UK Telephone: +44 (0) 1670 822181 · Facsimile: +44 (0) 1670 829465 · Email: info@welwyn-tt.com · Website: www.welwyn-tt.com Issue E · 12.04