RWM Vishay Sfernice Enamelled Wirewound Power Resistors Axial Leads FEATURES High dissipation up to 30 W (25 C) Fire Proof RoHS COMPLIANT Excellent Endurance typical drift 1.5 % after 1000 hours Conformal Vitreous Enamel All Welded Construction Low ohmic values 0.1 available Termination: Sn/Ag/Cu As a result of more than 50 years of experience and The performance of this series of professional resistors fully continuous improvements the RWM Series of resistors meets the requirements of the following specifications: features proven reliability in AC or DC applications. NF C 83-210-001 The high quality of the RWM resides mainly in the use of a CECC 40201-001 proprietary VISHAY SFERNICE enamel fired at high BS - CECC 40201-002 temperature and free from any compound liable to corrode the resistive wire. DIMENSIONS in millimeters 25 min. A 25 min. B 0.8 0.1 TECHNICAL SPECIFICATIONS DIMENSIONS Ohmic DESIGNATIONS POWER RATING Qualified IN mm Range in VISHAY Ohmic Limiting Critical Relation to WEIGHT With SFERNICE Range Element Resis- CECC CECC Tolerance IN g at at Surface STYLES NF C Voltage tance 40201 40201 A B 5 % + 70 C + 25 C Temp. 83-210 -001 -002 E24 Series + 450 C 0.1 0.1 1 1 RWM 4 x 10 RB59 JB 2.6 W 3 W 5.5 W 120 V 4.8 k 12 5.5 1 10 k 10 k 0.1 0.1 1 1 RWM 4 x 22 RB61 HB 4.5 W 5 W 7 W 300 V - 22.1 5.5 2 16 k 6.8 k 0.1 0.15 1 1.5 RWM 5 x 26 RB57 - 6 W 7 W 10 W 350 V 18.8 k 24.7 7.4 3 27 k 10 k 0.1 0.15 1 1 RWM 6 x 22 RB57 KB 6 W 7 W 10 W 350 V 17.5 k 18 6.5 2.2 39 k 39 k 0.1 1 1.5 RWM 8 x 26 RB60 - 7 W 8 W 10 W - 500 V - 24.7 7.4 3 27 k 0.33 0.33 1 1.5 RWM 6 x 34 RB60 LB 7 W 8 W 12 W 500 V 31 k 33.7 7.4 4 36 k 15 k 0.33 1 1.5 RWM 8 x 34 RB58 - 9.5 W 11 W 14 W - 650 V - 33.7 7.4 4 36 k 0.47 0.47 2 1.5 RWM 8 x 45 RB58 MB 9.5 W 11 W 20 W 650 V 38 k 45.8 9.4 8 62 k 33 k 0.47 2 1.5 RWM 10 x 45 - - 21 W 25 W 25 W - 800 V 25.6 k 45.8 9.4 8 62 k 0.68 1 1.5 RWM 10 x 64 - - 21 W 25 W 25 W - 800 V 25.6 k 63.8 9.4 14 100 k 0.68 1 1.5 RWM 10 x 65 - - 25.8 W 30 W 30 W - 800 V 21.3 k 63.8 9.4 14 100 k Undergoes European Quality Insurance System (CECC) www.vishay.com For technical questions, contact: sfer vishay.com Document Number: 50008 38 Revision: 30-Aug-07RWM Enamelled Wirewound Power Resistors Vishay Sfernice Axial Leads PERFORMANCE CECC 40201 - EN 140-201 TYPICAL DRIFTS TESTS CONDITIONS REQUIREMENTS 10 Pr during 10 s Short Time Overload (2 % + 0.1 ) (0.5 % + 0.05 ) 25 C ambient Temperature Cycling - 55 C + 200 C (1 % + 0.05 ) (0.5 % + 0.05 ) 56 days Humidity (Steady State) (5 % + 0.1 ) (0.5 % + 0.05 ) 40 C Ambient - R.H. 95 % Tensile test: 20 N Terminal Strength 2 successive bending (1 % + 0.05 ) (0.1 % + 0.05 ) 2 full rotations of 180 1000 h at Pr Load Life 90/30 Cycle (5 % + 0.1 ) (1.5 % + 0.05 ) 25 C ambient OVERLOAD Group Mounting In a still atmosphere, a distance between axes equal to five Heavy overloads can be endured in the form of short pulses times the resistors diameter is recommended. < 0.1 s. Particular requirements should be submitted to Vishay Sfernice, specifying peak voltage, cycle and Cabinet Mounting environmental conditions. Unventilated box: dissipation should be reduced (see dimensional drawing). Forced ventilation: if conditions are appropriate, dissipation RECOMMENDATIONS FOR USE may be doubled or even trebled. In any case: the surface temperature at the hottest point Since these components are high dissipation power should not exceed 450 C. resistors, customers are advised to use a high melting point These aspects should be considered by the end user. solder. For low ohmic values, the measurement becomes critical and the connecting wires resistance is to be included. The value is measured at 5 mm from the resistor body. ELECTRICAL SPECIFICATIONS Tolerance Standard 5 % On request 1 % and 2 % Temperature Coefficient + 75 ppm/C typical Dielectric Withstanding Voltage NF EN 140000 500 V - 1 minute - 10 mA RMS Inductance non inductive (Ayrton-Perry) winding available Document Number: 50008 For technical questions, contact: sfer vishay.com www.vishay.com Revision: 30-Aug-07 39