An Investigation into Alternative Methods of Drying Moisture Sensitive Devices
Published: |
November 26, 2021 |
Author: |
Vinny Nyugen |
Abstract: |
The use of desiccant bags filled with Silica Sand and or Clay beads used in conjunction with a Moisture Barrier Bag to control moisture for storage of printed circuit boards has long been an accepted practice and standard from both JEDEC and IPC organizations. Additionally, the use heated ovens for baking off moisture using the evaporation process has also been a longstanding practice from these organizations. This paper on alternative drying methods will be accompanied by completed independent, unbiased tests conducted by Vinny Nguyen, an engineering student (now graduated) from San Jose State University. The accompanied paper will examine the performance levels of different technologies of desiccant bags to control moisture in enclosed spaces. The tests and equipment set were reviewed by an engineer and consultant to the Lockheed Martin Aerospace Division and the IPC - TM-650 2.6.28 test method was review by engineer from pSemi. The tests were designed to mimic performance tests outlined in Mil Spec 3464, which both IPC and JEDEC have adopted for their respective standards. The test examined variables including absorption capacity rates, weight gain and release of moisture back into the enclosed area. The presentation will also address and highlight: • Similarities of PCBs and Heavy Equipment as it applies to Inspections, Causes of Failure, Types of Corrosion and Moisture Collection Points. • Performance Attributes of Different Desiccant Technologies as it applies to shape, texture, change outs, labeling and regeneration. • Venn Diagram of Electromechanical Failure with the circles 1. Current 2. Contamination 3. Humidity Presentation Available... |
You must be a registered user to talk back to us. |
Company Information:
More articles from Steel Camel »
- Aug 16, 2020 - An Engineer's Guide to Testing and Evaluating The Performance of Desiccant Bags for the Protection of Critical Moisture Sensitive Devices
- See all SMT / PCB technical articles from Steel Camel »
More SMT / PCB assembly technical articles »
- Aug 20, 2024 - Thermal Interface Materials Drive Electronic Innovation | GPD Global
- Aug 20, 2024 - Underfill Materials Dispensing in Electronics Manufacturing Applications | GPD Global
- Jul 15, 2024 - Transforming LED Manufacturing: I.C.T Engineers Set Up Complete Production Line in Tajikistan | I.C.T ( Dongguan ICT Technology Co., Ltd. )
- Jun 20, 2024 - Case study: Precise Coating on Electronic Hearing Devices | ASYMTEK Products | Nordson Electronics Solutions
- Mar 19, 2024 - What is Underfill | GPD Global
- Browse Technical Library »
An Investigation into Alternative Methods of Drying Moisture Sensitive Devices article has been viewed 454 times