Richard Heimsch

Richard Heimsch has submitted responses to the following questions.

Floor Life of MSD Parts
Your HIC is only indicating the RH in the bag. You explain that the components have exceeded their MSL floor ...

Bare PCB Shelf Life
The 'IPC-1601 printed board handling and storage guidelines' states: "If process controls are ineffective, and printed boards have absorbed excessive ...

Chip Component Moisture
Moisture Barrier bags are essentially designed for long term storage of dry parts. Properly vacuum prepared and sealed,they can effectively ...

BGA Component Moisture Exposure
Any damage that mighthave been done by processing expired MSDs cannot be reversed by bakingthe assemblies. And the fact that ...

Delamination dilemma
To find proceduresfor the proper stocking and moisture protection of electronic components, youcan refer to IPC standards. (IPC/JEDEC J-Std-033C) If ...

Is PCB Baking Necessary?
PCBs need to be treated and handled the same as any other Moisture Sensitive Device, especially in today's higher temperature ...

When is oven drying mandatory
Just because your boards were stored in Moisture Barrier Bags (MBB) does not guarantee their safety for processing, and your ...

Procedure for handling moisture sensitive PCB's
With the introduction of lead free, the risks associated with marginal or improper handling of MSDs has increased dramatically. Higher ...

"AOI" inspection using algorithm vs. image based
This is an implied "either-or" that has arguably now been bridged by a few manufacturers…but remains from the past a ...

Need lead-free wire solder for hand soldering
Beyond the product performance of wetting and low residue, the amount of smoke and type of odor released during soldering ...

Advise and suggestions for assembly using 01005 capacitors.
My observations thus far with regard to establishing a robust printing process include the following. 1. Assemblers demanding the use ...