Design and Development of Metallic Isolators for Wedge Lock Mounted Printed Circuit Boards (PCBs)

Authors

  • P. Anil Kumar
  • P. Bangaru Babu Department of Mechanical Engineering, National Institute of Technology, Warangal, Telangana

Keywords:

Electronic packaging, finite element analysis of chassis, chassis boundary conditions

Abstract

Wedge lock interfaces are preferred for mounting printed circuit boards (PCBs) in electronic packages of air borne vehicles. Merits of this particular mounting configuration are high mounting stiffness, high vibration dissipation and low thermal interface resistance. However, good amount of vibration dissipation occurs only in the close vicinity of wedge locks provided integral to PCBs; because of which electronic components can be mounted only near the wedge locks on PCB. This practical constraint doesn’t allow the electronics designer to aim for high population density of electronic components over PCB. To overcome this limitation, a metallic isolator is designed, developed and experimentally evaluated in random vibration environment. Proposed metallic isolator is configured such that it replaces existing wedge locks one to one without seeking for additional space. Further, this isolator ensures vibration levels within limits everywhere on PCB. With this isolator, designer can use almost entire space on PCB effectively for populating electronic components.

Published

2017-01-09

Issue

Vol. 4 No. 3 (2016)

Section

Articles

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