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Simplified Universal Mechanical Test Board with Actual Board Attributes for Solder Joint Reliability Characterization

IP.com Disclosure Number: IPCOM000011433D
Publication Date: 2003-Feb-19
Document File: 2 page(s) / 93K

Publishing Venue

The IP.com Prior Art Database

Abstract

Disclosed is a method that uses a simplified, universal mechanical test board (MTB), which has a similar form factor, design, and layout as other BGA packages. Benefits include reduced costs for board designs, and during the environmental stress test.

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Simplified Universal Mechanical Test Board with Actual Board Attributes for Solder Joint Reliability Characterization

Disclosed is a method that uses a simplified, universal mechanical test board (MTB), which has a similar form factor, design, and layout as other BGA packages. Benefits include reduced costs for board designs, and during the environmental stress test.

Background

MTB is a mandatory requirement in motherboard new platform certification. This has resulted in a large number of MTB requirements, all of which consume a lot of design time and material procurement. The situation is even more complicated in a market segment like Mobile, where the board varies from one customer to the other in terms of the board size, board shape, location of BGA package, etc. In addition, MTB occupies a large temperature cycling chamber space, which is currently in demand.

General Description

The disclosed method uses a simplified, universal MTB design (i.e. board form factor, component layout and daisy chain link), while still maintaining the critical actual board product attribute that is required for any package certification (see Figure 1). The attributes considered in this

invention are:

 

  • Natural frequency (Resonance) of the board
  • Maximum deflection of the board
  • Mechanical loading on the board

The disclosed method  is applicable for any package certification on solder joint reliability characterization. The required natural frequency, maximum deflection, and mechanical loading can...