RW1/RW2 Series Surface Mount Four Terminal Current Sense FeatuReS Extremely low resistance and high precision tolerance Low T.C.R. achieved (50ppm/C) Flameproof UL94-V-0 Marking: Black body color with white marking SeRieS SPeciFicatiONS Power Rating Resistance Range Resistance Dielectric Withstanding TCR Type (watts) E-12 (m) Tolerance Voltage (max. ppm/C) Qty./Reel RW1S0CK 1 5m - 50m 1% 500V 50 1000 RW2S0DK 2 5m - 50m 1% 500V 50 1000 chaRacteRiSticS TCR max. 50 ppm/C Derating Surface Temperature Rise +70C Rated Ambient Temp. 125 100 Operating Temp. Range -55C - +125C RW2S0DK 100 80 75 Typical Schematic 60 RW1S0CK Input Detecting 50 Circuit 40 25 R 20 Output W 0 0 Voltage Terminal 0620 40 080 100 -55 -40 -20 0 20 40 70 60 80 100 125 140 (KELVIN terminal) Percent Rated Power Ambient Temperature, C Current Terminal PeRFORMaNce Data Requirement R Limit Typical Parameter Test Method Resistance Within 25C regulated tolerance T.C.R. Within +25C/-55C and +25C/+125C specified T.C.R. Overload 1.0% 1.0% Rated power x 5 for 5 seconds Resistance to Solder 1.0% 1.0% 260C 5C, 10 seconds 1 second Heat 1.0% 0.5% -55C (30 minutes), +125C (30 minutes), 500 cycles Rapid Change of Temperature Moisture Resistance 2.0% 0.5% 40C 2C, 90 - 95% RH, 1000 hours, 1.5 hr ON, 0.5 hr OFF cycle Endurance at 70C 1.0% 0.5% 70C 2C, 1000 hours, 1.5 hr ON, 0.5 hr OFF cycle Low Temperature 0.5% 0.25% -55C, 1 hour Operation 0.5% 0.25% +125C, 100 hours High Temperature Exposure 16 1-866-9-OHMITE Intl 1-847-258-0300 Fax 1-847-574-7522 www.ohmite.com info ohmite.com Percent Rated Power Temperature Rise (C)RW1/RW2 Series Surface Mount Four Terminal Current Sense DiMeNSiONS (in./mm) Voltage Electrode Molded Resistive Current Resin Element Electrode L RW1S0CK RW2S0DK W e L 0.425.02 (10.80.5) 0.504.02 (12.80.5) W 0.244.012 (6.20.3) 0.323.012 (8.20.3) t t 0.083.008 (2.10.2) 0.122.008 (3.10.2) f a 0.118.012 (3.00.3) 0.197.012 (5.00.3) b 0.031.008 (0.80.2) 0.039.008) (1.00.2) d a c b h c c 0.055.02 (1.40.5) 0.079.02 (2.00.5) g d 0.047.02 (1.20.5) 0.079.02 (2.00.5) e 0.051.012 (1.30.3) 0.087.012 (2.20.3) f 0.051.012 (1.30.3) 0.087.012 (2.20.3) g 0.197.004 (5.00.1) 0.236.004 (6.00.1) Land Pattern h 0.098.004 (2.50.1) 0.118.004 (3.00.1) j 0.39 (10.0) 0.47 (12.0) Dimensions for reference only k 0.08 (2.0) 0.09 (2.3) k m 0.04 (1.0) 0.05 (1.15) m j n 0.12 (3.0) 0.21 (5.3) o 0.24 (6.0) 0.31 (8.0) p 0.20 (5.0) 0.24 (6.0) q 0.06 (1.6) 0.09 (2.2) r 0.08 (2.0) 0.13 (3.2) n o s 0.04 (1.0) 0.06 (1.6) r s p q ORDeRiNg iNFORMatiON RoHS Compliant Standard Part Numbers for RW Series Wattage: 1 watt 2 watt Tolerance: 1% 0.5% 1% Type & Ohms Tolerance Packaging Power Rating R005 = 0.005 F = 1% T = tape and reel Ohms Series: RW1S0CK----FET RW1S0CK----DET RW2S0DK----FET RW1S0CK = 1 watt R050 = 0.05 D = 0.5% (optional) RW2S0DK = 2 watt 0.00500 RW1S0CKR005FET RW1S0CKR005DET RW2S0DKR005FET 0.01000 RW1S0CKR010FET RW1S0CKR010DET RW2S0DKR010FET Current 0.02500 RW1S0CKR025FET RW1S0CKR025DET RW2S0DKR025FET Sense Power Rating 0.05000 RW1S0CKR050FET RW1S0CKR050DET RW2S0DKR050FET Resistor (watts) The part itself will be marked as follows: Tolerance F = 1% D = 0.5% Ohms 10m ohms = 0.01 1-866-9-OHMITE Intl 1-847-258-0300 Fax 1-847-574-7522 www.ohmite.com info ohmite.com 17