Electronics Forum: general and purpose and board (Page 1 of 5)

ITAR and AS9100...like peas and carrots?

Electronics Forum | Wed Aug 12 15:50:01 EDT 2009 | davef

Wouldn't think of them as peas and carrots. Maybe, tree and carrot. ITAR: Export regulations that are specific. Board fabricators may choose to be ITAR registered. AS9100: Aerospace tailored version of ISO9000. So, it's general. In it's base form, AS

Conformal Coat and RTV

Electronics Forum | Wed Jan 03 21:20:22 EST 2007 | davef

Comments are: * General purpose RTV (RTV-108) releases an acetic acid (vinegar) during cure and corrodes copper, brass and sensitive metals. It is therefore NOT for use in delicate electrical or electronic applications. However, there is an electrica

Touch-up and Inspection Process

Electronics Forum | Tue Mar 01 10:31:26 EST 2005 | Greg

QC --> Touch-up --> QC --> Assembly After SMT all PWB goes to QC, QC Inspects and marks all that needs rework then PWB's goes to Touch-up to fix what QC marked for rework. After that All reworked boards goes to QC for another verification and stampi

Pick and Place Rivet

Electronics Forum | Tue Aug 12 14:49:26 EDT 2008 | awegener

I'm attempting to pick and place a small rivet onto our PCB. The rivet should be attached via reflow solder. The rivet will be used to create a sandwich, holding together a frame and additional circuit board in a package. This part is intended onl

PCB Thickness and BLR

Electronics Forum | Mon Jun 03 13:26:32 EDT 2019 | az2019

Hi, I have a general question about the relationship of PCB thickness and BLR testing result. For example, I have QFN6x6 parts mounted on board in 1.2mm, 1.6mm, and 2.4mm thickness. All boards have 6 layers of Cu. Studies show thicker board gives les

RNETs and Lead Free

Electronics Forum | Tue May 06 11:56:56 EDT 2008 | joeherz

We have a board that uses 0402x4 RNET packages that we are having a difficult time getting to solder consistently. Paste deposition is fine (using AIM WS353) and profile is dead-nuts. I'm starting to wonder if this is something that we're just goin

Pick and Place Nozzles

Electronics Forum | Mon Aug 18 15:03:38 EDT 2008 | awegener

I'd like to get more information about pick and place nozzles. How can I learn more? ... What do the nozzles look like? Are there different shapes? Are custom nozzles sometimes used for custom parts or are the nozzles mostly standardized? What kind

CCGA and overprinting?

Electronics Forum | Mon Oct 15 10:51:49 EDT 2001 | davef

On over printing, the general issues are: * Paste deposits being so large that when reflowing, collapse onto many, rather than a single solder mass. * Paste expanding during heating and being close to other solder deposits and bridging [as you say].

AOI, Quality and SPC

Electronics Forum | Tue Mar 04 17:27:07 EST 2003 | msivigny

Hello Dave, I can understand why you might not use the auto-correct function based on the time it takes to perform the operation. I question why there is an auto-correct function in the first place? If I understand the way this works correctly, the m

Foam fluxer maintenance, storage and cleaning

Electronics Forum | Sun Nov 08 15:27:25 EST 2015 | davef

Thinner: Flux thinner, NOT paint thinner We kept a spare stone in thinner in inventory. We cut PVC pipe to size, cap in one end, screw thread on the other, stone inside, filled with flux thinner and covered with a screw cap. I don't remember who we

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