RWST www.vishay.com Vishay Sfernice Wirewound Resistors, Industrial High Power, Vitreous Tubular FEATURES • 95 W to 800 W at 25 °C • NF C 93-214 • RB 25 x 168, RB 30 x 250 • Rugged construction for use in severe environmental conditions • Material categorization: for definitions of compliance please see www.vishay.com/doc?99912 “CS” Type 1 Collars The RWST vitreous wirewound high power resistors are known for their excellent reliability which has developed out of the Vishay Sfernice experience over several decades in the field of high current applications. Extremely severe conditions of use are encountered in electrical traction including repeated overloads. To withstand such conditions the new RWST model is extremely rugged and is manufactured to a very carefully monitored process using the best materials. NF F 16101, 10/1988 and 16102, 04/1992: Not applicable (our parts are made of metallic and refractory materials). NF C 93-214. Performances according to NF C 93-214. DIMENSIONS in millimeters STAINLESS STEEL 304 L COLLARS “CS” TYPE 1 STAINLESS STEEL 304 L COLLARS “CS” TYPE 2 ØC A A D 23 E D E 3 ØB 26 ØB F 58 F G H G H 15 15 J J WELDED STAINLESS STEEL 304 L COLLARS “AN” N WELDED STAINLESS STEEL 304 L BAND “B” ØU Q ØB ØB R ØC K V P ØC T S A Z L A Revision: 14-Mar-16 Document Number: 50017 1 For technical questions, contact: [email protected] THIS DOCUMENT IS SUBJECT TO CHANGE WITHOUT NOTICE. THE PRODUCTS DESCRIBED HEREIN AND THIS DOCUMENT ARE SUBJECT TO SPECIFIC DISCLAIMERS, SET FORTH AT www.vishay.com/doc?91000 RWST www.vishay.com Vishay Sfernice DIMENSIONS in millimeters SERIES RWST 25 x 138 RWST 25 x 168 RWST 30 x 250 RWST 40 x 370 RWST 50 x 373 SERIES RWST 25 x 138 RWST 25 x 168 RWST 30 x 250 RWST 40 x 370 RWST 50 x 373 CONNECTIONS A±2 ØB MAX. ØC MIN. D E F ± 0.5 G -4 +0 H -4 +0 J ± 0.5 K L + 0.5 +0 AN-B CS type 1 138 28 12 50 ± 1.5 27 ± 1 24 199 169 6.5 28.5 ± 1 9 AN-B CS type 1 168 28 12 50 ± 1.5 27 ± 1 24 229 199 6.5 28.5 ± 1 9 AN-B CS type 1 250 33 17 60 ± 1.5 30 ± 1 25 317 287 9 31 ± 1 13 AN CS type 2 370 45 22 69 max. 45 ± 1.5 30 432 405 9 45 ± 1.5 18 AN CS type 2 373 53 27.1 80 max. 51 ± 1.5 30 432 405 9 51 ± 1.5 18 P Q -0 +5 R - 0.3 + 0.9 S MAX. T±1 ØU V Z AVERAGE UNIT WEIGHT IN g (CS collars) CONNECTIONS N±2 AN-B CS type 1 117 ± 2 51.5 ± 1.5 15 26 38.5 23.5 5.7 33.5 ± 1 6 225 AN-B CS type 1 147 ± 2 50 ± 1.5 15 26 38.5 23.5 5.7 33.5 ± 1 6 250 AN-B CS type 1 227 ± 2 55 ± 1.5 18 31 43.5 26 5.7 36 ± 1 5 445 AN CS type 2 332 ± 3 81.5 max. - - - - 9.2 57 ± 1.5 10 1400 AN CS type 2 332 ± 3 92.5 max. - - - - 9.2 63 ± 1.5 11.5 2200 STANDARD ELECTRICAL SPECIFICATIONS MODEL SIZE RWST 25 x 138 RWST 25 x 168 RWST 30 x 250 RWST 40 x 370 RWST 50 x 373 25138 25168 30250 40370 50373 RESISTANCE RANGE 2.7 to 82K 2.7 to 100K 4.7 to 220K 8.2 to 360K 12 to 390K MECHANICAL SPECIFICATIONS Mechanical Protection Resistive Element Connections AN Collar or B Average Unit Weight Vitreous enamel Ni-Cr wire CS supporting collars on request 225 g to 2200 g ENVIRONMENTAL SPECIFICATIONS Temperature Range Climatic Category -55 °C +450 °C -55 °C / +200 °C / 56 days RATED POWER P25 °C W 95 160 280 500 700 TOLERANCE ±% 5, 10 5, 10 5, 10 5, 10 5, 10 TECHNICAL SPECIFICATIONS Resistance Range Resistance Tolerance Standard Power Rating 2.7 to 430 k (E12, E24 preferred series values) ±5% 95 W to 800 W at 25 °C Temperature Coefficient 75 ppm/°C (typical) Shelf Life 0.1 % year (typical) PERFORMANCE TESTS CONDITIONS 10 Pr during 5 s Voltage limited at < 5000 V Short Time Overload Climatic Sequence -55 °C, +200 °C Humidity (Steady State) Thermal Shock Shock Vibration Terminal Strength Load Life Revision: 14-Mar-16 AN B 56 days 95 % relative humidity Load at 100 % Pr followed by cold temperature exposure at -55 °C / 15' Severity 50 A 9 shocks/each side Severity 55B Traction 40 Ncm Torque 60 Ncm 90' / 30' cycle 1000 h at Pr 25 °C REQUIREMENTS TYPICAL VALUES AND DRIFTS 2 % or 0.05 0.5 % 2 % or 0.05 Insulation resistance 100 M 3 % or 0.05 Insulation resistance 100 M 0.5 % 0.5 % 2 % or 0.05 0.5 % 1 % or 0.05 0.25 % 1 % or 0.05 0.25 % 1 % or 0.05 5% 0.5 % 1000 h 5000 h 1% 2% Document Number: 50017 2 For technical questions, contact: [email protected] THIS DOCUMENT IS SUBJECT TO CHANGE WITHOUT NOTICE. THE PRODUCTS DESCRIBED HEREIN AND THIS DOCUMENT ARE SUBJECT TO SPECIFIC DISCLAIMERS, SET FORTH AT www.vishay.com/doc?91000 RWST www.vishay.com Vishay Sfernice SPECIAL FEATURES RWST STYLE Designation NF C 93-214 Maximum Power Rating at 25 °C Ohmic Range (E12, E24 series) Limiting Element Voltage Critical Resistance 25 x 138 110 W 2.7 to 82 k 1400 V 18 k 25 x 168 RB 25 x 168 180 W 2.7 to 100 k 1900 V 20 k 30 x 250 RB 30 x 250 320 W 4.7 to 220 k 3000 V 30 k 40 x 370 600 W 8.2 to 360 k 4500 V 36 k 50 x 373 800 W 12 to 430 k 5000 V 30 k NON INDUCTIVE WINDING For high frequencies, low self induction resistors are available with special windings. RWSTNI designation. RWSTNI 25 x 138 22 2.5 k MODEL AND STYLE Ohmic Range (E12 series) RWSTNI 25 x 168 22 4 k RWSTNI 30 x 250 120 6.8 k 50 25 0 65 130 195 260 325 390 ST 25 ×1 RW 38 ST 25 ×1 RW 68 ST 30 ×2 RW 50 ST 40 RW ×3 ST 70 50 ×3 73 75 400 RW RATED POWER IN % 100 0 RWSTNI 50 x 373 150 8.2 k TEMPERATURE RISE HOT SPOT TEMPERATURE IN °C POWER RATING RWSTNI 40 x 370 120 8.2 k 300 200 100 0 10 455 100 1000 RATED POWER IN W AMBIENT TEMPERATURE IN °C MARKING PACKAGING Vishay Sfernice trademark, model, style, nominal resistance (in ), tolerance (in %), manufacturing date. Box: Fixed quantity depending on size and connections ORDERING INFORMATION RWST MODEL 25 x 138 STYLE NON-INDUCTIVE WINDING SPECIAL DESIGN Optional Optional B CONNECTIONS 56U OHMIC VALUE ±5% B06 TOLERANCE PACKAGING e LEAD (Pb)-FREE Custom items are subject to extra-charge and min. order. Please see price list. GLOBAL PART NUMBER INFORMATION R W S T GLOBAL MODEL RWST 2 5 1 6 8 C 4 7 0 0 J B 0 4 SIZE LEADS OPTION OHMIC VALUE TOLERANCE PACKAGING SPECIAL 25 x 138 25 x 168 30 x 250 40 x 370 50 x 373 A = AN B=B C = CS F = faston N = non inductive winding The first three digits are significant figures and the last digit specifies the number of zeros to follow. R designates decimal point. 4700 = 470 48R8 = 48.7 R010 = 0.01 R470 = 0.47 J = 5.0 % K = 10 % Box: BO1 BO2 BO2NA BO4 BO4NA BO6 BO6NA As applicable. Example: BA7 RELATED DOCUMENTS APPLICATION NOTES Packaging Information Revision: 14-Mar-16 www.vishay.com/doc?50033 Document Number: 50017 3 For technical questions, contact: [email protected] THIS DOCUMENT IS SUBJECT TO CHANGE WITHOUT NOTICE. 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