RWM Vishay Sfernice Enamelled Wirewound Power Resistors Axial Leads FEATURES * High dissipation * High reliability level - Fire Proof - Great Mechanical Strength - Excellent Endurance - Good Environmental Protection - Conformal Vitreous Enamel - All Welded Construction * Low ohmic values The performance of this series of professional resistors fully meets the requirements of the following specifications: As a result of more than 50 years of experience and continuous improvements the RWM Series of resistors features proven reliability in AC or DC applications. The high quality of the RWM resides mainly in the use of a proprietary VISHAY SFERNICE enamel fired at high temperature and free from any compound liable to corrode the resistive wire. - NF C 83-210-001 - CECC 40201-001 - BS - CECC 40201-002 DIMENSIONS in millimeters 25 min. A 25 min. O 0.8 0.1 OB TECHNICAL SPECIFICATIONS VISHAY SFERNICE STYLES DESIGNATIONS Ohmic Qualified Range in Ohmic Limiting Critical With at Surface Relation to Range Element Resisat Voltage tance NF C + 70 C + 25 C Temp. Tolerance 5% 83-210 + 450 C E24 Series CECC 40201 -001 NFC 83-210 -001 CECC 40201 -002 RWM 4 x 10 RB59 JB 2.6 W 3W 5.5 W RWM 4 x 22 RB61 HB 4.5 W 5W 7W RWM 5 x 26 RB57 - 6W 7W 10 W RWM 6 x 22 RB57 KB 6W 7W 10 W RWM 8 x 26 RB60 - 7W 8W 10 W RB60 - 7W 8W 12 W RB58 - 9.5 W 11 W 14 W RB58 - 9.5 W 11 W 20 W RWM 10 x 45 - - 21 W 25 W 25 W RWM 10 x 64 - - 21 W 25 W 25 W RWM 10 x 65 - - 25.8 W 30 W 30 W RWM 6 x 34 RWM 8 x 34 RWM 8 x 45 BS POWER RATING 0.1 10 k 0.1 10 k 0.1 16 k 0.1 27 k 0.1 6.8 k 0.15 10 k 0.1 39 k DIMENSIONS IN MM Weight in g A OB 120 V 4.8 k 12 1 5.5 1 1 300 V - 22.1 1 5.5 1 2 7.4 1.5 3 350 V 1 18.8 k 24.7 0.15 39 k 350 V 17.5 k 18 1 6.5 1 2.2 0.1 27 k 0.33 36 k - 500 V - 24.7 1 7.4 1.5 3 0.33 15 k 500 V 31 k 33.7 1 7.4 1.5 4 0.33 36 k - 650 V - 33.7 1 7.4 1.5 4 0.47 33 k 650 V 38 k 45.8 2 9.4 1.5 8 - 800 V 2 25.6 k 45.8 9.4 1.5 8 0.68 100 k - 800 V 1 25.6 k 63.8 9.4 1.5 14 0.68 100 k - 800 V 1 21.3 k 63.8 9.4 1.5 14 0.47 62 k 0.47 62 k Undergoes European Quality Insurance System (CECC) www.vishay.com 38 For technical questions, contact sfer@vishay.com Document Number: 50008 Revision 17-Nov-05 RWM Enamelled Wirewound Power Resistors Axial Leads Vishay Sfernice PERFORMANCE CECC 40201 TYPICAL DRIFTS CONDITIONS TESTS 10 Pr during 10 s. 25 C ambient (2 % + 0.1 ) (0.5% + 0.05 ) (1 % + 0.05 ) (0.5 % + 0.05 ) 56 days 40 C Ambient - R.H. 95 % (5 % + 0.1 ) (0.5 % + 0.05 ) Tensile test: 20 N 2 successive bending 2 full rotations of 180 (1 % + 0.05 ) (0.1 % + 0.05 ) 1000 h at Pr 90/30 Cycle 25 C ambient (5 % + 0.1 ) (1.5 % + 0.05 ) Short Time Overload - 55 C Temperature Cycling Humidity (Steady State) Terminal Strength REQUIREMENTS Load Life + 200 C OVERLOAD Heavy overloads can be endured in the form of short pulses < 0.1 s. Particular requirements should be submitted to Vishay Sfernice, specifying peak voltage, cycle and environmental conditions. RECOMMENDATIONS FOR USE Since these components are high dissipation power resistors, customers are advised to use a high melting point solder. For low ohmic values, the measurement becomes critical and the connecting wires resistance is to be included. The value is measured at 5mm from the resistor body. Group Mounting In a still atmosphere, a distance between axes equal to five times the resistor's diameter is recommended. Cabinet Mounting * Unventilated box: dissipation should be reduced (see dimensional drawing). * Forced ventilation: if conditions are appropriate, dissipation may be doubled or even trebled. * In any case: the surface temperature at the hottest point should not exceed 450 C. These aspects should be considered by the end user. ELECTRICAL SPECIFICATIONS Tolerance Standard 5% On request 1 % to 10 % Temperature Coefficient + 75 ppm/C typical Dielectric Withstanding Voltage NF EN 140000 Inductance Document Number: 50008 Revision 17-Nov-05 500 VRMS - 1 minute - 10 mA non inductive (Ayrton-Perry)winding available For technical questions, contact sfer@vishay.com www.vishay.com 39 RWM Vishay Sfernice Enamelled Wirewound Power Resistors Axial Leads POWER RATING CHART 116 % RATED POWER 100 75 50 25 0 0 25 100 200 300 350 AMBIENT TEMPERATURE IN C TYPICAL TEMPERATURE RISE 34 34 x 6x 8x 26 45 10 x4 10 4 x6 5 10 5x 400 x 8 26 22 -6 4x 4x HOT SPOT TEMPERATURE IN C x2 10 2 5 8 x6 300 200 Optional 100 0 0 2 4 6 8 10 12 14 16 18 20 22 24 26 28 30 RATED POWER IN WATTS MARKING Sfernice trademark, model and style, CECC style, if applicable (except for the smallest model due to lack of space: (4 x 10 or RB 59), ohmic value, resistance tolerance, manufacturing date (year - month). ORDERING INFORMATION RWM 8 x 45 MODEL STYLE www.vishay.com 40 XXX NI OPTIONAL SPECIAL DESIGN Non Inductive Winding Method N Optional 1.6 k 5% OHMIC VALUE TOLERANCE PACKAGING Custom items are subject to extra charge and min. order. Please see price list. For technical questions, contact sfer@vishay.com Document Number: 50008 Revision 17-Nov-05 Legal Disclaimer Notice Vishay Notice Specifications of the products displayed herein are subject to change without notice. Vishay Intertechnology, Inc., or anyone on its behalf, assumes no responsibility or liability for any errors or inaccuracies. Information contained herein is intended to provide a product description only. No license, express or implied, by estoppel or otherwise, to any intellectual property rights is granted by this document. Except as provided in Vishay's terms and conditions of sale for such products, Vishay assumes no liability whatsoever, and disclaims any express or implied warranty, relating to sale and/or use of Vishay products including liability or warranties relating to fitness for a particular purpose, merchantability, or infringement of any patent, copyright, or other intellectual property right. The products shown herein are not designed for use in medical, life-saving, or life-sustaining applications. Customers using or selling these products for use in such applications do so at their own risk and agree to fully indemnify Vishay for any damages resulting from such improper use or sale. Document Number: 91000 Revision: 08-Apr-05 www.vishay.com 1