RW1/RW2 Series Surface Mount Four Terminal Current Sense F e at u r e s • 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 S E R IE S S P ECI F ICATI O N S Power Rating Resistance Range Type (watts) E-12 (mΩ) RW1S0CK 1 5mΩ - 50mΩ RW2S0DK 2 5mΩ - 50mΩ Resistance Tolerance 1% 1% Dielectric Withstanding TCR Voltage (max. ppm/°C) 500V ±50 500V ±50 Qty./Reel 1000 1000 characteristics Rated Ambient Temp. +70°C Derating Operating Temp. Range -55°C - +125°C Input Detecting Circuit R W Output 125 80 100 RW2S0DK Percent Rated Power Typical Schematic Surface Temperature Rise 100 Temperature Rise (ϒC) TCR max. ±50 ppm/°C 60 40 20 0 Voltage Terminal (KELVIN terminal) 75 25 0 -55 -40 -20 0 Current Terminal 20 40 70 60 80 Ambient Temperature, °C 100 RW1S0CK 50 125 140 0 P E R F O R M A N CE D ATA Requirement ∆R Typical Parameter Limit 16 Test Method Resistance Within regulated tolerance — 25°C T.C.R. Within specified T.C.R. — +25°C/-55°C and +25°C/+125°C Overload ±1.0% ±1.0% Rated power x 5 for 5 seconds Resistance to Solder ±1.0% Heat ±1.0% 260°C ± 5°C, 10 seconds ±1 second Rapid Change of ±1.0% Temperature ±0.5% -55°C (30 minutes), +125°C (30 minutes), 500 cycles Moisture Resistance ±2.0% ±0.5% 40°C ± 2°C, 90 - 95% RH, 1000 hours, 1.5 hr ON, 0.5 hr OFF cycle Endurance at 70°C ±1.0% ±0.5% 70°C ± 2°C, 1000 hours, 1.5 hr ON, 0.5 hr OFF cycle Low Temperature ±0.5% Operation ±0.25% -55°C, 1 hour High Temperature ±0.5% Exposure ±0.25% +125°C, 100 hours 1-866-9-OHMITE • Int’l 1-847-258-0300 • Fax 1-847-574-7522 • www.ohmite.com • [email protected] 20 40 60 80 Percent Rated Power 100 RW1/RW2 Series Surface Mount Four Terminal Current Sense d i m e ns i ons (in./mm) Voltage Electrode Molded Resistive Resin Element L Current Electrode W t e f c b d h g a c k j m 0.425±.02 (10.8±0.5) 0.244±.012 (6.2±0.3) 0.083±.008 (2.1±0.2) 0.118±.012 (3.0±0.3) 0.031±.008 (0.8±0.2) 0.504±.02 (12.8±0.5) 0.323±.012 (8.2±0.3) 0.122±.008 (3.1±0.2) 0.197±.012 (5.0±0.3) 0.039±.008) (1.0±0.2) h j k m n 0.098±.004 (2.5±0.1) 0.39 (10.0) 0.08 (2.0) 0.04 (1.0) 0.12 (3.0) 0.118±.004 (3.0±0.1) 0.47 (12.0) 0.09 (2.3) 0.05 (1.15) 0.21 (5.3) n o r RW2S0DK L W t a b Land Pattern Dimensions for reference only RW1S0CK c d e f g o p q r s 0.055±.02 (1.4±0.5) 0.047±.02 (1.2±0.5) 0.051±.012 (1.3±0.3) 0.051±.012 (1.3±0.3) 0.197±.004 (5.0±0.1) 0.24 0.20 0.06 0.08 0.04 (6.0) (5.0) (1.6) (2.0) (1.0) 0.079±.02 (2.0±0.5) 0.079±.02 (2.0±0.5) 0.087±.012 (2.2±0.3) 0.087±.012 (2.2±0.3) 0.236±.004 (6.0±0.1) 0.31 0.24 0.09 0.13 0.06 (8.0) (6.0) (2.2) (3.2) (1.6) s p q ord e r i n g i nform a t i on RoHS Compliant �������������� Type & Power Rating RW1S0CK = 1 watt RW2S0DK = 2 watt Ohms R005 = 0.005� R050 = 0.05� Tolerance F = 1% D = 0.5% Packaging T = tape and reel (optional) Current Sense Power Rating Resistor (watts) The part itself will be marked as follows: ���� ���������� Ohms 10m ohms = 0.01� Standard Part Numbers for RW Series Wattage: Tolerance: Ohms 1 watt 1% 1% RW1S0CK----DET RW2S0DK----FET RW1S0CKR005DET RW1S0CKR010DET RW1S0CKR025DET RW1S0CKR050DET RW2S0DKR005FET RW2S0DKR010FET RW2S0DKR025FET RW2S0DKR050FET Series: RW1S0CK----FET 0.00500 0.01000 0.02500 0.05000 RW1S0CKR005FET RW1S0CKR010FET RW1S0CKR025FET RW1S0CKR050FET Tolerance F = 1% D = 0.5% 1-866-9-OHMITE • Int’l 1-847-258-0300 • Fax 1-847-574-7522 • www.ohmite.com • [email protected] 2 watt 0.5% 17