Electronics Forum: pcb substrate warpage (Page 1 of 30)

PCB warpage

Electronics Forum | Thu Oct 14 04:28:29 EDT 1999 | Grace Chua

Hi there, I have quite a number of problematic bd due to warpage problem. I would like to know the method on how to measure PCB warpage, thus to decide on the dispositon of these boards. Another question, can these warp bd be rework/fix. Is there

halogen free substrate

Electronics Forum | Tue Oct 29 11:20:17 EST 2002 | nifhail

Guys, Has anyone considered the specific use of Halogen free substrates for enhanced PCB performance? What is the impact on the PCB price ? Pls help.thank you in advance.

PCB's using Kevlar substrate

Electronics Forum | Mon May 06 11:37:00 EDT 2002 | dwboost

Our company specializes in quick turn Printed Circuit Boards; prototype and short run quantities. A customer has inquired about using Kevlar as the substrate. Can anyone give us the name of a supplier of Kevlar? Is the production process compatible w

lead substrate materials

Electronics Forum | Wed Jan 30 09:10:48 EST 2002 | bob_smith

Hi Dave, Sorry about that. Specifically, I am referring to radial leads on a crystal. The leads are supposed to be gold plated but only 1/2 to 2/3 of the lead is plated. We bend the lead to form a foot which is soldered to a pad on the PCB. Normally

PCB's using Kevlar substrate

Electronics Forum | Thu May 09 17:21:39 EDT 2002 | davef

In describing a bare board, you need to talk about base, laminate, and conductive materials. Common laminate materials are: * Glass fabric * Cotton fabric * Paper Common NEMA grades of technical laminates are: * Glass Fabric Grades: G3, G7, G10,

Re: BGA warpage

Electronics Forum | Thu Jan 21 15:24:18 EST 1999 | Terry Burnette

| I have received prototype PBGA (256 pins) devices from | Motorola (actual part number = KXPC850ZT50). These parts seemed very warped on the edges. When I put the part on a plain surface, it rocks quite a bit when I press lightly on a corner. I h

warpage after reflow

Electronics Forum | Tue Oct 07 03:55:03 EDT 2014 | puja

How to avoid /reduce warpage in long length PCB &

PCBA warpage issue

Electronics Forum | Wed Sep 02 11:41:29 EDT 2020 | pradeep14

How to reduce the PCBA warpage issue after Reflow oven for 1mm PCB Thickness

warpage after reflow

Electronics Forum | Tue Oct 07 22:15:12 EDT 2014 | padawanlinuxero

How to avoid /reduce warpage in long length PCB & > _1.6MM THICK PCB. You need to put it in a fixture or pallet to run it in the reflow oven, most common material use here is durostone for the pallets that we run in the reflow oven, we use Durosto

Re: PCB warpage

Electronics Forum | Thu Oct 14 18:25:29 EDT 1999 | JAX

Grace, You can get the information you need from IPC. Measuring board warpage is covered in theie 610B manual. It will let you know the what can be reworked and what cannot.

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