Power Resistors Cooled by Auxiliary Heatsink (Not Supplied) Thick Film Metal Technology

Product catalog summary

Overview: This document provides technical specifications and guidelines for Vishay's RCMC power resistors, which utilize thick film metal technology on ceramic substrates. These resistors are designed to be cooled by an auxiliary heatsink, which is not supplied with the product.

Design Support Tools: The resistors feature a high power-to-volume ratio, are non-inductive, and allow for easy assembly with self-calibrated pressure of 400 N.

Electrical Specifications: The RCMC model offers a resistance range from 0.27 to 18 ohms, with a maximum rated power of 750 W at 25°C, a tolerance of ±10%, and a temperature coefficient of ±150 ppm/°C.

Mechanical Specifications: The resistive element is made of NiCr alloy, with an alumina substrate and a resin-filled case. The material complies with UL 94 V-0 flame classifications.

Technical Specifications: The resistors have a nominal power rating of 500 W at 70°C, an operating temperature range of -55°C to +125°C, and a maximum operating voltage of 5000 V. They also feature a dielectric strength of up to 12,000 V and a creepage distance of up to 75 mm.

Performance Tests: The resistors undergo various tests, including momentary overload, humidity, mechanical shock, vibration, terminal strength, and endurance, with specific conditions and requirements outlined.

Dissipation and Cooling: The document provides guidelines for temperature rise as a function of power applied and details on cooling methods, including forced air ventilation and liquid cooling. The thermal resistance of the heatsink must be selected according to the power applied.

Options and Ordering Information: The document outlines available options for electrical terminals and provides a format for ordering, including model, style, terminals, resistance value, tolerance, and packaging.

Legal Disclaimer: Vishay disclaims liability for errors or inaccuracies in the document and specifies that the products are not designed for use in life-saving applications unless expressly indicated.

Catalog excerpts

Power Resistors Cooled by Auxiliary Heatsink (Not Supplied) Thick Film Metal Technology-1

Power Resistors Cooled by Auxiliary Heatsink (Not Supplied) Thick Film Metal Technology FEATURES • Technology: thick film metal on ceramic • Cold system without external radiation • High power / volume ratio • Non-inductive • Easy assembly, self-calibrated pressure (400 N) DESIGN SUPPORT TOOLS [ click logo to get started~"| Models Available Revision: 16-Nov-17 1 Document Number: 32510 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

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Power Resistors Cooled by Auxiliary Heatsink (Not Supplied) Thick Film Metal Technology-2

www.vishay.com RCMC Vishay MCB DIMENSIONS in millimeters L/Standard HV Note (1) The higher of either value ENERGY ABSORPTION Repetitive operation: 25 J/t = 50 ps Accidental operation: 100 J/t = 50 ps / 100 impulsions max. Other t values: contact us 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.vishav.com/doc791000

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Power Resistors Cooled by Auxiliary Heatsink (Not Supplied) Thick Film Metal Technology-3

RCMC www.vishay.com DISSIPATION Axis Title Temperature Rise as a Function of the Power Applied Overall Thermal Resistance 0.18 °C/W (See Assembly) Permanent Applicate Power as a Function of Heatsink Temperature Thermal compound resistance ≤ 0.05 °C/W / 0.025 mm Screws and bolts are supplied with each product. Max. tightening torque: 200 Ncm, mechanical mounting 200 Ncm, electrical connection 2 screws TH M4 x 6/6 and 2 M4 contact lock washers for connections. 2 off CHC M4 x 16/16 class 8. COOLING The temperature of the heatsink may be maintained at the specified values with • Forced air ventilation...

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Power Resistors Cooled by Auxiliary Heatsink (Not Supplied) Thick Film Metal Technology-4

RCMC www.vishay.com Vishay MCB OPTIONS • Electrical terminals: M5 • Other terminal size • Output cable ORDERING INFORMATION RCMC 500 HV 10 Q 10 % XXX BO15 MODEL STYLE TERMINALS RESISTANCE VALUE TOLERANCE CUSTOM DESIGN PACKAGING On request: special value, shape, M5 terminals, etc. 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

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Power Resistors Cooled by Auxiliary Heatsink (Not Supplied) Thick Film Metal Technology-5

Legal Disclaimer Notice www.vishay.com Disclaimer ALL PRODUCT, PRODUCT SPECIFICATIONS AND DATA ARE SUBJECT TO CHANGE WITHOUT NOTICE TO IMPROVE RELIABILITY, FUNCTION OR DESIGN OR OTHERWISE. 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 in any datasheet or in any other disclosure relating to any product. Vishay makes no warranty, representation or guarantee regarding the suitability of the products for any particular...

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