Models RTO 20 a nd RTO 50 FEATURES * TO-220 package: Compact and easy to mount * 0-watt and 50-watt power ratings available with through-hole or 2 SMD versions * Broad resistance range: 0.01 to 1 M * Low thermal resistance down to 2.6 C/W * Non-inductive element APPLICATIONS w w w. v i s h a y. c o m * Industrial and medical power supplies * Test equipment * Power conversion * Current sensing * Snubbers Datasheet is available on our web site at www.vishay.com for RTO 20 and RTO 50 - http://www.vishay.com/doc?50005 and http://www.vishay.com/doc?50035 Product Sheet Thick Film Power Resistor RE S I S T I V E P RODUCT S RESISTORS B B Tinned copper 2.2 g max. Connections Weight Sealed container Solder immersion IEC 60695-11-5 2 applications 30 s seperated by 60 s Sealing Flammability B 2 COMPLIANT RoHS 250 V Limiting Element Voltage d 0.1 H 3.12 k: Inductance Critical Resistance For technical questions, contact sfer@vishay.com COMPLIANT O 0.8 12.5 13.7 15 2.5 1.3 RTO 50F - LEADED O 3.6 4.5 TO 220 Insulated Case Molded Thick Film Tinned copper alloy 2.2 g max. 8.8 Document Number: 50035 Revision: 20-Sep-07 Flammability Temperature Range Climatic Category Sealing 5.08 15 3 2 1.3 0.3 8.8 300 V 1.8 k: VMN-PT9056-0801 www.vishay.com 1 d0.1 H Critical Resistance t 106 M: Inductance Insulation Resistance 2000 VRMS - 1 Minute 10 mA Max 150 ppm/C Dielectric Strength MIL STD 202 (301) Limiting Element Voltage See Performance table Standard (- 55 C; + 150 C) Temperature Coefficient 50 W at + 25 C RTH (j-c): 2.6 C/W free air: 2.25 W at + 25 C Onto a heatsink Thermal Resistance and Nominal Power 1 % to 10 % Dissipation and Associated 0.010 : to 1 M: serie E24 Tolerances Standard Resistance Range ELECTRICAL SPECIFICATIONS Only for RTO 50 version C = during surface mount soldering, the soldering temperature profile must not cause the metal tab of this device to exceed 220 C. 1.6 12.5 O 3.6 RTO 50C - FOR SURFACE MOUNTING 4.5 10.1 For technical questions, contact: sfer@vishay.com - 55 C to + 155 C 55/155/156 Sealed container Solder immersion IEC 60695-11-5 2 applications 30 seconds seperated by 60 seconds ENVIRONMENTAL SPECIFICATIONS Standard Package DIMENSIONS Mechanical Protection Resistive Element Connections Weight MECHANICAL SPECIFICATIONS 5.08 10.1 DIMENSIONS in millimeters Because of the knowledge and experience in Thick Film technology, Vishay Sfernice has been able to develop a high power resistor in a TO 220 package called RTO 50. The special design of this component allows the dissipation of 50 W when mounted on a heatsink. The ohmic value is adjusted by sand trimming. This process does not generate hot spots as in laser trimming, which could lead to microcracks on each side of the curve. This process improves the reliability and the stability of the resistor and at the same time gives a good overload capability. x Non inductive element x High power to size ratio x Leaded or surface mount versions x Adjusted by sand trimming x 50 W at 25 C Heatsink Mounted FEATURES RoHS Vishay Sfernice Vishay Sfernice RTO 50 RTO 20 and RTO 50 Thick Film Technology Power Resistor, Thick Film Technology 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: 50005 Revision: 05-Jun-07 t 106 M: Insulation Resistance 2000 VRMS - 1 min - 10 mA Max (Between Terminals and Heatsink) 150 ppm/C Dielectric Strength MIL STD 202 See Performance table Standard (- 55 C; + 150 C) 20 W at + 25 C RTH(j-c): 6.5 C/W free air: 2 W at + 25 C Thermal Resistance and Nominal Power %.58.9*;<9.7.//2,2.6; Onto a heatsink 1 % to 10 % 0.010 :to 1 M: serie E24 Dissipation and ::7,2*;.- Tolerances (Standard) Resistance Range ELECTRICAL SPECIFICATIONS A!64@/79#%! =.9:276-<926g:<9/*,.57<6;:74-.926g;.58.9*;<9.897/24. 5<:;67;,*<:.;1.5.;*4;*+7/;12:-.=2,.;7.?,..- D RTO 20C - FOR SURFACE MOUNTING For technical questions, contact: sfer@vishay.com 55/155/56 Climatic Category www.vishay.com 14 - 55 C to + 155 C Temperature Range ENVIRONMENTAL SPECIFICATIONS Standard Package TO 220 Insulated case Thick Film Resistive Element DIMENSIONS Insulated Case Mechanical Protection MECHANICAL SPECIFICATIONS A%74.9*6,.<64.::7;1.9>2:.:8.,2/2.-C 55 RTO 20F - LEADED DIMENSIONS in millimeters 20 W at 25 C Heatsink Mounted High Power Dissipation to size ratio Wide Resistance Range from 0.01 : to 1 M: Negligible Inductance Easy Mounting TO 220 package: Compact and easy to mount Two versions of this thick film resistor are available: x A Radial Leaded version for PCB Mounting x A Flat Lead version for Surface Mounting x x x x x x FEATURES Power Resistors Thick Film Technology Power Resistors, The well known TO 220 package is compact and easy to mount. Vishay Sfernice Revision 05-Jun-07 RTO 20 Revision 20-Sep-07