Dear Jerry,

Please continue to bake, while not baking might not affect every batch or 
every part, there is a good chance that you will see various issues if 
baking is not completed.

From my experience we have seen failed vias due to explosive delamination as 
the main issue.

Alasdair

-----Original Message----- 
From: Jerry Dengler
Sent: Friday, January 10, 2020 12:53 PM
To: [log in to unmask]
Subject: [TN] Flexible PCB's

TechNetters,



We reviewed documentation from a flexible PCB manufacturer and saw that
they recommend baking of the flex boards prior to assembly even if they
are brand new boards in a Moisture Barrier Bag.



Why wouldn't these be handled like any other moisture sensitive
component?



How many of you that work with flexible PCBs are baking them even if
they come out of a MBB with A HIC card that shows no real moisture?



Thank You,



Jerry Dengler

Production Manager

Pergamon Corporation

380 Crooked Lane, Unit# 3

King of Prussia, PA  19406-2567

U.S.A.

(610) 239-0721 Phone