1733 Reader's Spreads pg1-203:document 1/27/09 4:04 PM Page 42 NPR resistors surface mount molded current sense resistor EU features • • • • • • • Surface mount power resistors Flame retardant type (UL94V0) Current detecting resistors for power supplies, etc. Metal plate terminals Non-wirewound structure Marking: Black body color with teal marking Products with lead-free terminations meet EU RoHS requirements. Pb located in glass material, electrode and resistor element is exempt per Annex 1, exemption 5 of EU directive 2005/95/EC dimensions and construction L Size Code W b t Electrode c c Molded Resistive Resin Element a L W Dimensions inches (mm) t a b c NPR1 .295±.02 .177±.012 .079±.012 .098±.012 .051±.012 .055±.012 (7.5±0.5) (4.5±0.3) (2.0±0.3) (2.5±0.3) (1.3±0.3) (1.4±0.3) NPR2 .472±.02 .315±.012 .157±.02 .157±.012 .118±.02 (12.0±0.5) (8.0±0.3) (4.0±0.5) (4.0±0.3) (3.0±0.5) .059±.02 (1.5±0.5) ordering information New Part # NPR Type 1 T Power Rating 1 2 Termination Material T: Sn (Other termination styles may be available, please contact factory for options) TE Packaging NPR1- TE: 7" embossed plastic (1,000 pieces/reel) NPR2- TEB: 13" embossed plastic (1,000 pieces/reel) 100 Nominal Resistance ±1%: 3 significant figures + 1 multiplier “R” indicates decimal point <100Ω ±5%, ±10%: 2 significant figures + 1 multiplier “R” indicates decimal point <10Ω All values <0.1Ω regardless of tolerance use “L” as decimal Ex: 91mΩ = 91L 3.9mΩ = 3L9 J Tolerance F: ±1% J: ±5% K: ±10% 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. 44 1/31/08 KOA Speer Electronics, Inc. • 199 Bolivar Drive • Bradford, PA 16701 • USA • 814-362-5536 • Fax: 814-362-8883 • www.koaspeer.com 1733 Reader's Spreads pg1-203:document 1/27/09 4:04 PM Page 43 PMS 300 neg. Black neg. surface mount molded current sense resistor applications and ratings Part Designation T.C.R. (ppm/°C) Max. Power Rating NPR1 1W NPR2 2W Resistance Range E-24 (F±1%) (J±5%) (K±10%) ±100: R≥0.1Ω ±200: R<0.1Ω 0.1Ω - 10MΩ 10mΩ - 22MΩ 3.9mΩ - 9.1mΩ Absolute Maximum Working Voltage Absolute Maximum Overload Voltage 350V 700V 500V 1000V Rated Operating Ambient Temperature Temperature Range -55°C to +180°C +70°C environmental applications Derating Curve Surface Temperature Rise 100 150 NPR2 1 Temperature Rise (°C) % Rated Power 80 NPR1 1 100 60 40 20 0 -60 -40 -20 -55 0 20 40 80 100 120 140 160 180 70 Ambient Temperature (°C) 1 Hot Spot 2 Solder Joint NPR1 2 50 0 60 NPR2 2 0 25 50 75 100 % Rated Power Performance Characteristics Parameter Resistance T.C.R. Overload Resistance to Solder Heat Rapid Change of Temperature Moisture Resistance Endurance at 70°C Low Temperature Operation Requirement Limit Within regulated tolerance Within specified T.C.R. ±1.0% ±1.0% ±1.0% ±2.0% ±2.0% ±0.5% ∆R Typical Test Method — 25°C — +25°C/+125°C ±1.0% ±1.0% ±1.0% ±1.5% ±0.5% ±0.25% Rated voltage x 2.5 for 5 seconds 260°C ± 5°C, 10 seconds ± 1 second -40°C (30 minutes), +155°C (30 minutes), 5 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 Specifications given herein may be changed at any time without prior notice. Please confirm technical specifications before you order and/or use. 12/16/08 KOA Speer Electronics, Inc. • 199 Bolivar Drive • Bradford, PA 16701 • USA • 814-362-5536 • Fax: 814-362-8883 • www.koaspeer.com 45 resistors NPR