Effect of Alloy and Flux System on High Reliability Automotive Applications

Published:

January 5, 2017

Author:

Mitch Holtzer, Steve Brown - Alpha, Marcus Reichenberger - Technische Hochschule Nürnberg

Abstract:

The July 2006 implementation of ROHS exempted automotive applications from converting to lead free technology. Nine years later, all major OEM and Tier 1 automotive manufacturers have converted or are in the process of converting to lead free circuit assembly processing. Starting with SAC (SnAgCu) alloys as a baseline for lead free soldering, in the last years several specific alloys were developed in order to improve resistance to high temperature creep, vibration survival and the ability to withstand thermal cycling and thermal shock.

The paper compares three different solder alloys and two flux chemistries in terms of void formation and mechanical / thermal fatigue properties. Void content and reliability data of the alloys will be presented and discussed in relation to the acceptance criteria of a Tier 1 /OEM automotive supplier. As a result, a ranking list will be presented considering the combined performance of the alloys. In order to analyze the void formation and mechanical behavior of different solder alloys and flux chemistry combinations, statistical methods are used....

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Company Information:

MacDermid Alpha Electronics Solutions

A materials supplier to the electronics industry. Our breadth of products includes Solder Paste, Solder Preforms, Stencils, Liquid Soldering Flux, Soldering Alloys, Cored Wire, Adhesives, Cleaners and Sinter Technologies

Altoona, Pennsylvania, USA

Manufacturer

  • Phone 8149411694
  • Fax 8149403811

MacDermid Alpha Electronics Solutions website

Company Postings:

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