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RWST25X168NICS Datasheet(PDF) 2 Page - Vishay Siliconix |
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RWST25X168NICS Datasheet(HTML) 2 Page - Vishay Siliconix |
2 / 3 page Document Number: 50017 Revision 13-Jan-04 www.vishay.com 62 RWST Vishay Sfernice For technical questions, contact sfer@vishay.com NON INDUCTIVE WINDING For high frequencies, low self induction resistors are available with special windings. RWSTNI designation. MODEL AND STYLE Ohmic range (E12 series) 22Ω 2.5kΩ RWSTNI 25 x 138 22Ω 4kΩ RWSTNI 25 x 168 120Ω 6.8kΩ RWSTNI 30 x 250 120Ω 8.2kΩ RWSTNI 40 x 370 150Ω 8.2kΩ RWSTNI 50 x 373 TESTS CONDI TIONSREQUIREMENTS TYPICAL VALUES AND DRIFTS Short Time Overload 10Pr during 5s Voltage limited at < 5000V 2% or 0.05Ω 2% or 0.05Ω Insulation resistance 100MΩ 3% or 0.05Ω Insulation resistance 100MΩ 2% or 0.05Ω 1% or 0.05Ω 1% or 0.05Ω 1% or 0.05Ω 5% 0.5% 0.5% 0.5% 0.5% 0.25% 0.25% 0.5% 1000h 1% 5000h 2% – 55°C + 200°C 56 days 95% relative humidity Load at 100% Pr followed by cold temperature exposure at –55°C/15’ severity 50A 9 shocks/each side severity 55B 90’/30’ cycle 1000h at Pr 25°C Climatic Sequence Humidity ( Steady State) Thermal Shock Shock Vibration Terminal Strength Load Life PERFORMANCE Fixed Wirewound High Power Vitreous Resistors Electrical Traction Model MECHANICAL SPECIFICATIONS Mechanical Protection Vitreous enamel Resistive Element Ni-Cr wire Connections CS supporting collars AN Collar or B on Request Average Unit Weight 225 to 2200g ENVIRONMENTAL SPECIFICATIONS Temperature Limits – 55°C + 450°C Climatic Category – 55°C/+ 200°C/56 days Resistance Range 2.7Ω to 430kΩ (E12-E24 preferred series values) Resistance Tolerance Standard ± 5% Power Rating 95W to 800W at 25°C Temperature Coefficient 75ppm/°C (typical) Shelf Life 0.1% year (typical) ELECTRICAL SPECIFICATIONS RWST STYLE Designation NF C 93-214 Limiting Element Voltage Critical Resistance 25 x 138 – 95W 110W 2.7Ω 82kΩ 1400V 18kΩ 25 x 168 RB 25 x 168 160W 180W 2.7Ω 100kΩ 1900V 20kΩ 30 x 250 RB 30 x 250 280W 320W 4.7Ω 220kΩ 3000V 30kΩ 40 x 370 – 500W 600W 8.2Ω 360kΩ 4500V 36kΩ 50 x 373 – 700W 800W 12Ω 430kΩ 5000V 30kΩ Power Rating at 25°C Maximum Power Rating at 25°C P max. Ohmic Range (E12, E24 series) SPECIAL FEATURES AN Traction 40Ncm B Torque 60Ncm |
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