Journal of SMT Article

DEVELOPMENT AND APPLICATION OF A PRESS-PIN/PTH RELIABILITY MODEL

Author: A. Kulkarni et al.
Company: Hewlett Packard Company
Date Published: 7/1/2002   Volume: 15-3

Abstract: Press-pin/plated-trough-hole (PP/PTH) technology has been utilized in the electronic systems for more than 25 years [1]. It replaces traditional through-hole wave soldering for board attachments and is widely used in the connector industry.

Many researchers have been studying mechanical and electrical reliability of PP/PTH interconnection [1,2,3]. The research tools varied from experimental testing to finite element (FE) numerical model development [3,4,5]. Most of the published literature on PP/PTH studies uses two-dimensional (2D) FE models that are limited and simplified, not fully capturing the interaction physics [6]. Developing a three-dimensional (3D) model could be more accurate in predicting their interactions and reliability, as the PP/PTH assembly is inherently 3D in nature [6].

A team composed of Georgia Institute of Technology and Hewlett Packard Company personnel has developed a 3D FE model of the PP/PTH assembly as a joint venture over the past few years. In this work, a combined numerical and experimental program addresses some of the design challenges including complex geometry, PTH sizes, and material non-linearities. Analytically, a parametric model was developed in ANSYS. Experimentally, two different types of pins have been assessed for reliability under three different PTH surface finishes and three different drilled-hole-sizes (DHS).

This model can be used to make design decisions involving:

  • Simulating and predicting insertion/extraction forces for the PP in the PTH.
  • Predicting and visualizing the damage to PTH walls due to the compliant pin interactions.
  • Predicting thermo-mechanical reliability of PP/PTH assembly.
  • This paper will explain, in detail, construction of the 3D PP/PTH model, the model physics, experimental validations conducted, and the results obtained. And finally, it will describe the ongoing and future work planed to make the model more useful.



    Cost to download:

      Members: Free! (Log on to receive the member rate)
      Non-Members: $10

    Why become an SMTA member?

    Not a member yet? Join SMTA today!

    Notice: Sharing of articles is prohibited. Downloaded papers must only be stored on a local hard drive and not in a shared repository either internal or external.


    Back


    SMTA Headquarters
    6600 City West Parkway, Suite 300
    Eden Prairie, MN 55344

    Phone 952.920.7682
    Fax 952.926.1819
    Home
    Site Map
    Update Your Info
    Related Links
    Send Us Feedback
    Contact Us
    Privacy Policy
    ↑ Top