RH Vishay Sfernice Heatsink Encased Wirewound Power Resistors FEATURES * * * * * * * 5 Watt to 50 Watt at 25 C NF C 83-210 CECC 40 203 RoHS COMPLIANT High stability < 0.05 % year Low temperature coefficient typically 15 ppm/C Wide range of values from 0.006 to 130 k Termination = Sn/Ag/Cu Encased in a compact and light heatsink offering complete environmental protection, great mechanical strength and easy mounting. Non inductive versions can be supplied under the RHNI designation (please indicate required specifications and frequency range upon ordering). DIMENSIONS in millimeters RH A D MODEL AND STYLE A B 0.2 D 0.2 E 0.5 F G1 H 0.7 J 0.5 O K 0.1 L max. M 0.5 N 0.3 O P min. Q Weight in g M F N O2 H J B G OK L OP E Q RH5 RH10 RH25 RH50 28.5 1.5 12.5 11.3 16.3 6.8 1.5 8.5 6.2 16.4 2.4 8.9 4.3 1.6 2.1 25.3 1.5 3 35 1.5 15.9 14 19 7.9 1.5 11 7.9 20.6 2.4 11 5.6 2 2.1 30.6 1.5 8.8 49 1.3 19.8 18.3 28 11.1 1.5 14 9.9 27.5 3.2 15 8 2.4 2.1 44.6 1.3 16.5 70.2 1.4 21.4 39.7 50 11 1.2 15.5 10.7 29.4 3.2 15 8 2.4 2.1 66.5 1.4 30.8 ELECTRICAL SPECIFICATIONS VISHAY SFERNICE MODEL AND STYLE RH5 NF C 83-210 (CECC 40 203) RH10 RH25 RH50 RE4 RE1 RE2 RE3 5W 10 W 20 W 30 W 4W 8W 16 W 24 W 10 W 12.5 W 25 W 50 W 10 W 20 W 40 W 25 C 70 C VISHAY SFERNICE Limits 25 C 70 C 8W VISHAY SFERNICE Limits 25 C 4W 6W 9W 12 W 70 C 3.2 W 4.8 W 7.2 W 9.6 W Rated Maximum Voltage (VRMS) 160 V 250 V 550 V 1285 V Dielectric Strength VRMS 1000 V 1500 V 2500 V 2500 V 0.01 12 k 0.1 2.7 k 0.006 20 k 0.1 4.99 k 0.006 62 k 0.1 11.8 k 0.006 130 k 0.1 33.2 k Power Rating MIL Limits Chassis Mounted Resistors 413 536 cm2 for cm2 for RH5 and RH10 RH25 and RH50 Unmounted Resistors Ohmic Range Qualified Ohmic Range Minimum Ohmic Values in Relation to Tolerance VISHAY SFERNICE NF C 83-210 E 96 0.1 % 1 1 E 96 0.5 % 0.1 0.1 E 96 1% 0.1 0.05 E 48 2% 0.01 0.01 E 24 5% 0.01 0.01 E 12 10 % 0.01 0.008 0.006 Undergoes European Quality Insurance System (CECC) www.vishay.com 52 For technical questions, contact: sfer@vishay.com Document Number: 50013 Revision: 07-Dec-06 RH Heatsink Encased Wirewound Power Resistors Vishay Sfernice PERFORMANCE MIL-R-18546 D TESTS Operating Temperature Range Momentary Overload Climatic Sequence NF C 83-210 CONDITIONS - 55 C + 200 C 5 Pr/5 s - 55 C + 200 C 5 cycles Load Life Test at High Temperature 56 days Climatic sequences test, with load and polarisation 5 to 10 > 10 1000 h 25 C Pn MIL VISHAY 200 C 30 % of Pn SFERNICE Resistance to Moisture Temperature Coefficient Load Life at Maximum Temperature (0.1 % + 0.05 ) (0.25 % + 0.05 ) (0.1 % + 0.05 ) (1 % + 0.05 ) Ins. resistance 1 G (1 % + 0.05) Ins. resistance 100 M 2 h at + 275 C Humidity (Steady State) TYPICAL DRIFTS REQUIREMENTS (0.25 % + 0.05 ) (0.1 % + 0.05 ) (0.5 % + 0.05 ) (1 % + 0.05 ) (0.5 % + 0.05 ) 50 ppm/C 25 ppm/C (1 % + 0.05 ) Ins. resistance 1 G (0.1 % + 0.05 ) (0.5 % + 0.05 ) 15 ppm/C MOMENTARY OVERLOAD 1. Momentary overload (> 2 s): See example in table below. In all cases, it should be understood that: - the 12 Pn overload applies only to ohmic values 0.1. - the overload voltage shall not be higher than that used for the dielectric strength test (see Standard Electrical Specifications). 2. Short time overload (< 2 s): For times shorter than 2 seconds, higher overloads can be sustained in some cases. Consult VISHAY SFERNICE. POWER LOADING 2.5 Pn 5 Pn 12 Pn DURATION 10 s 5s 2s TEMPERATURE RISE POWER RATING CHART 200 HOT SPOT TEMPERATURE IN C % RATED POWER 100 75 50 25 0 0 50 100 150 200 250 275 300 RH 150 100 RH 50 RH 10 RH 50 25 5 0 350 0 10 20 30 40 50 60 70 RATED POWER IN WATTS (Mounted on heatsink chassis) AMBIENT TEMPERATURE IN C MARKING PACKAGING VISHAY SFERNICE trademark, model, style, CECC style (if applicable) nominal resistance (in ), tolerance (in %), manufacturing date. Bag of 10 units ORDERING INFORMATION RH MODEL 5 STYLE NI NON INDUCTIVE WINDING Optional SPECIAL DESIGN Method N Optional 18U OHMIC VALUE Custom items are subject to extra-charge and min. order. Please see price list. 5% TOLERANCE BA10 PACKAGING e1 LEAD (Pb)-FREE SAP PART NUMBERING GUIDELINES RH MODEL 05 STYLE Document Number: 50013 Revision: 07-Dec-06 N NON INDUCTIVE WINDING Optional 18R00 OHMIC VALUE For technical questions, contact: sfer@vishay.com J TOLERANCE S03 PACKAGING www.vishay.com 53 Legal Disclaimer Notice Vishay Disclaimer All product specifications and data are subject to change without notice. Vishay Intertechnology, Inc., its affiliates, agents, and employees, and all persons acting on its or their behalf (collectively, "Vishay"), disclaim any and all liability for any errors, inaccuracies or incompleteness contained herein or in any other disclosure relating to any product. Vishay disclaims any and all liability arising out of the use or application of any product described herein or of any information provided herein to the maximum extent permitted by law. The product specifications do not expand or otherwise modify Vishay's terms and conditions of purchase, including but not limited to the warranty expressed therein, which apply to these products. No license, express or implied, by estoppel or otherwise, to any intellectual property rights is granted by this document or by any conduct of Vishay. The products shown herein are not designed for use in medical, life-saving, or life-sustaining applications unless otherwise expressly indicated. Customers using or selling Vishay products not expressly indicated for use in such applications do so entirely at their own risk and agree to fully indemnify Vishay for any damages arising or resulting from such use or sale. Please contact authorized Vishay personnel to obtain written terms and conditions regarding products designed for such applications. Product names and markings noted herein may be trademarks of their respective owners. Document Number: 91000 Revision: 18-Jul-08 www.vishay.com 1