Electronics Forum: pcb storage shelf life (Page 1 of 18)

PCB over shelf life

Electronics Forum | Fri Dec 17 02:43:24 EST 2010 | grahamcooper22

Ideal storage conditions to stop pcbs absorbing moisture is at less then 5% RH, for example in sealed moisture barrier bags. You mention that storage was at 40~70%...at these levels the pcb will absorb quite a bit of moisture. Your baking time was no

PCB over shelf life

Electronics Forum | Fri Dec 17 03:26:04 EST 2010 | kemasta

Thanks. If based on your statement, I can understand why it still can absorb moisture. But the PCB supplier was suggested us to keep at 40%~70% RH, if any issue occur with the storage condition of less than 5% RH, I think it is difficult for us to ge

PCB over shelf life

Electronics Forum | Thu Dec 16 04:14:16 EST 2010 | kemasta

Hi, I am new in this industrial. I learnt that PCB may absorb moisture and eventually caused delaminate after heat apply on it (reflow or wave). But I don't quite understand, if the PCB was keep in sealed bubble bag, and with the humidity control wit

PCB over shelf life

Electronics Forum | Thu Dec 16 09:15:07 EST 2010 | davef

Please post pictures of microsections

PCB over shelf life

Electronics Forum | Thu Dec 16 23:17:02 EST 2010 | Jacki

Hi Kim Dun take any risk in delamination bcoz u will be the person to answer for being it. So, we do bake all Pcbs, which have 3months of shelf life, b4 startin any process although they are still inside the factory packs.

PCB over shelf life

Electronics Forum | Thu Dec 16 19:28:50 EST 2010 | kemasta

I tired to attached the picture, but fail. maybe My company firewall block any document from leak out. Any other way?

PCB over shelf life

Electronics Forum | Fri Dec 17 00:55:22 EST 2010 | kemasta

Hi Kim Dun take any risk in delamination bcoz u > will be the person to answer for being it. So, > we do bake all Pcbs, which have 3months of shelf > life, b4 startin any process although they are > still inside the factory packs. We keep it in

Floor life pcb assembly

Electronics Forum | Fri Apr 25 04:44:56 EDT 2008 | jkhiew

Hi all, I mean after post adhesive oven curing (SMD at bottom side) prior to manual insert of PTH components (top side), what is the recommended storage time prior to wave soldering in order to avoid pin/blow holes and sunken joints issues (pcb asse

SMT device shelf Life

Electronics Forum | Wed Jun 25 12:13:31 EDT 2003 | russ

A lot of it depends upon what the lead terminations are and the storage conditions. For example if they are tin you will run into trouble. We have used all types of parts that are all ages (We just started doing BGAs that are 5 years old.) I don't

Shelf life of PCBs

Electronics Forum | Sun Mar 23 13:39:39 EST 2003 | MA/NY DDave

Hi, From re reading, I think I did OK with my previous message yet I wanted to hit some other items, maybe differently. Without checking all the sources I don't believe there are any industry wide standards. I am sure and know there are industry

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