four-terminal current sense resistor EU features • • • • • Extremely low resistance and high precision tolerance Low T.C.R. achieved (±50ppm/°C) Flameproof UL94V0 Marking: Black body color with white marking Products with lead-free terminations meet EU RoHS and China RoHS requirements dimensions and construction Size Code L CSR1 CSR2 t c t Dimensions inches (mm) b c d e f g h .244±.012 (6.2±0.3) .083±.008 (2.1±0.2) .118±.012 (3.0±0.3) .031±.008 (0.8±0.2) .055±.02 (1.4±0.5) .047±.02 (1.2±0.5) .051±.012 (1.3±0.3) .051±.012 (1.3±0.3) .197±.004 (5.0±0.1) .098±.004 (2.5±0.1) .504±.02 (12.8±0.5) .323±.012 (8.2±0.3) .122±.008 (3.1±0.2) .197±.012 (5.0±0.3) .039±.008 (1.0±0.2) .079±.02 (2.0±0.5) .079±.02 (2.0±0.5) .087±.012 (2.2±0.3) .087±.012 (2.2±0.3) .236±.004 (6.0±0.1) .118±.004 (3.0±0.1) Voltage Electrode Molded Resistive Resin Element L b d h g Current Electrode e a c ordering information New Part # a .425±.02 (10.8±0.5) W f W CSR Type 1 Power Rating 1: 1W 2: 2W T Termination Material T: Sn (Other termination styles may be available, please contact factory for options) TED Packaging TED: CSR1 TEB: CSR2 (1,000 pieces/reel) 10L0 Nominal Resistance In milliohms: 3 significant figures “L” indicates decimal point F Tolerance D: ±0.5% F: ±1% For further information on packaging, please refer to Appendix A. Specifications given herein may be changed at any time without prior notice. Please confirm technical specifications before you order and/or use. 1/24/14 KOA Speer Electronics, Inc. • 199 Bolivar Drive • Bradford, PA 16701 • USA • 814-362-5536 • Fax: 814-362-8883 • www.koaspeer.com 73 resistors CSR resistors CSR four-terminal current sense resistor typical circuit schematic Input Detecting Circuit C S R Output Voltage Terminal (KELVIN terminal) Current Terminal applications and ratings Part Designation Power Rating CSR2 1W CSR1 2W T.C.R. (ppm/°C) Max. Resistance Range E-12 ±50 5mΩ - 50mΩ Derating Curve environmental applications Resistance Tolerance Rated Ambient Temperature Operating Temperature Range +70°C -55°C to +125°C D: ±0.5%,F: ±1% F: ±1% Surface Temperature Rise CSR1 CSR2 100 60 40 20 175 175 150 150 Temperature Rise (°C) Temperature Rise (°C) % Rated Power 80 100 100 CSR1 75 50 CSR1 -20 0 80 70 Ambient Temperature (°C) 20 40 60 140 100 120 125 For resistors operated at an ambient temperature of 70°C or above, a power rating shall be derated in accordance with the above derating curve. Performance Characteristics Parameter Resistance T.C.R. Overload (Short Time) Resistance to Solder Heat Rapid Change of Temperature Moisture Resistance Endurance at 70°C Low Temperature Exposure High Temperature Exposure Requirement ∆R ±% Limit Typical Within regulated — tolerance Within specified — T.C.R. ±1.0% ±1.0% ±1.0% ±1.0% ±1.0% ±0.5% ±2.0% ±0.5% ±1.0% ±0.5% ±0.5% ±0.25% ±0.5% ±0.25% 0 CSR2 75 50 25 25 0 -60 -40 -55 CSR2 125 125 0 25 50 75 100 2 0 1 % Rated Power 0 25 50 100 % Rated Power 20mΩ 10mm pattan S Regarding the temperature rise, the 1value of the temperature varies per conditions and board for use since the temperature is measured under our measuring conditions. Please refer to us before use. Test Method 25°C +25°C/+125°C Rated power x 5 for 5 seconds 260°C ± 5°C, 10 seconds ± 1 second -55°C (30 minutes), +125°C (30 minutes), 500 cycles 40°C ± 2°C, 90 - 95% RH, 1000 hours, 1.5 hr ON, 0.5 hr OFF cycle 70°C ± 2°C, 1000 hours, 1.5 hr ON, 0.5 hr OFF cycle -55°C, 1 hour +125°C, 100 hours Specifications given herein may be changed at any time without prior notice. Please confirm technical specifications before you order and/or use. 74 75 11/13/14 KOA Speer Electronics, Inc. • 199 Bolivar Drive • Bradford, PA 16701 • USA • 814-362-5536 • Fax: 814-362-8883 • www.koaspeer.com