Browse Prior Art Database

Temperature Cycling of Electrical Components

IP.com Disclosure Number: IPCOM000074515D
Original Publication Date: 1971-May-01
Included in the Prior Art Database: 2005-Feb-23
Document File: 2 page(s) / 54K

Publishing Venue

IBM

Related People

Jameson, GO: AUTHOR

Abstract

An apparatus for temperature cycling of electrical components comprises a container 10 filled with an inert fluorocarbon liquid 11. A cooling means comprising coils 12 surrounding a cylindrical tube 13 is submerged in liquid 11 proximate the bottom of the container 10. A heating means comprises an electrical heating coil 14 surrounding a cylindrical tube 15 submerged in liquid 11 proximate the upper region thereof. Electrical components 16 to be temperature cycle tested are mounted on a transfer frame 17 supported by a vertical elevator tube 18 attached to an elevator arm 19 connected to an elevator driving mechanism, not shown. Electrical wires 20 pass through vertical tube 18 and form connections for testing the electrical elements 16, while submerged, in any well-known manner.

This text was extracted from a PDF file.
At least one non-text object (such as an image or picture) has been suppressed.
This is the abbreviated version, containing approximately 69% of the total text.

Page 1 of 2

Temperature Cycling of Electrical Components

An apparatus for temperature cycling of electrical components comprises a container 10 filled with an inert fluorocarbon liquid 11. A cooling means comprising coils 12 surrounding a cylindrical tube 13 is submerged in liquid 11 proximate the bottom of the container 10. A heating means comprises an electrical heating coil 14 surrounding a cylindrical tube 15 submerged in liquid 11 proximate the upper region thereof. Electrical components 16 to be temperature cycle tested are mounted on a transfer frame 17 supported by a vertical elevator tube 18 attached to an elevator arm 19 connected to an elevator driving mechanism, not shown. Electrical wires 20 pass through vertical tube 18 and form connections for testing the electrical elements 16, while submerged, in any well-known manner. With this apparatus, electrical elements 16 are readily movable on a repetitive basis, if desired, to low temperature or high temperature zones for testing.

Liquids especially useful in this application are known commercially Liquids especially useful in this application are known commercially by the tradename FC43 or FC75, and are made by Minnesota Mining & Manufacturing Company. A characteristic of such liquids is that very definite heating and cooling zones can be formed within a single liquid environment. When the component transfer mechanism moves the electrical components 16 and supporting structure from one zone to another, the liquid 1...