Browse Prior Art Database

Determination of Mechanical Defects in Electronic Components

IP.com Disclosure Number: IPCOM000047959D
Original Publication Date: 1983-Dec-01
Included in the Prior Art Database: 2005-Feb-08
Document File: 1 page(s) / 11K

Publishing Venue

IBM

Related People

Massey, MJ: AUTHOR

Abstract

This article describes a method of precipitating potential, latent mechanical defects in electronic components in a high volume, continuous operation. This technique is an improvement over more complex labor-intensive techniques. Methods presently in use screen completed products on an individual basis. The technique described below screens components prior to functional test. Thermal cycling and random vibration are known to be effective mechanical stresses for latent mechanical defects in electronic components. The components to be screened travel on an articulated conveyor through a sound-proof chamber. Random noise is generated within the chamber at high intensity (140-180 dB Sound Pressure Level) by electro-pneumatic transducers to induce both heat and random vibration into the items under test.

This text was extracted from a PDF file.
This is the abbreviated version, containing approximately 100% of the total text.

Page 1 of 1

Determination of Mechanical Defects in Electronic Components

This article describes a method of precipitating potential, latent mechanical defects in electronic components in a high volume, continuous operation. This technique is an improvement over more complex labor-intensive techniques. Methods presently in use screen completed products on an individual basis. The technique described below screens components prior to functional test. Thermal cycling and random vibration are known to be effective mechanical stresses for latent mechanical defects in electronic components. The components to be screened travel on an articulated conveyor through a sound-proof chamber. Random noise is generated within the chamber at high intensity (140-180 dB Sound Pressure Level) by electro-pneumatic transducers to induce both heat and random vibration into the items under test. No other power requirements exist. Precipitated defects can then be detected using conventional techniques.

1