Electronics Forum: contaminated leads that cause poor wetting (Page 7 of 10)

Re: Cylindrical diodes Missing during SMT process.

Electronics Forum | Tue Aug 24 06:40:18 EDT 1999 | Gyver

| | | Hello everyone, | | | We found many cylindrical diodes missing during SMT process. Could someone tell us how to prevent this problem? Is it effective to change the shape of stencil apture or reduce fan speed in reflow oven? Thanks in advance. |

Re: Cylindrical diodes Missing during SMT process.

Electronics Forum | Tue Aug 24 11:36:37 EDT 1999 | Jimmy G

| | | | Hello everyone, | | | | We found many cylindrical diodes missing during SMT process. Could someone tell us how to prevent this problem? Is it effective to change the shape of stencil apture or reduce fan speed in reflow oven? Thanks in advanc

PIHR Inspection Criteria

Electronics Forum | Thu May 17 07:36:40 EDT 2001 | Bob Willis

Here is a copy of a draft document on PIHR Inspection I have jotted down on a flight to Scotland yesterday, any comments suggestions etc ? I have already most of the photos for the standard but as you know there is nothing in the IPC document it just

Air Moisture in Production

Electronics Forum | Wed Dec 08 11:26:04 EST 2010 | davef

3 Printer Area Conditions * As stated earlier, heat and humidity are damaging to solder paste. Ideally, the printing area should be maintained at 40% - 50% relative humidity and 72°- 80°F (22-26°C). In addition, no air (cool or warm) should blow dire

Re: Wave Solder Problems - VIA HOLES

Electronics Forum | Fri Jun 04 10:02:06 EDT 1999 | Chrys Shea

| | I'm encountering a new problem at my new company that I haven't encountered before in my past life - and that's Wave Soldering VIA holes. | | | | We've been getting a rash of defects that we call in this company, "insufficient solder in VIA hole

Re: Wave Solder Problems - VIA HOLES

Electronics Forum | Tue Jun 08 11:40:03 EDT 1999 | Steve Skinner

| | | I'm encountering a new problem at my new company that I haven't encountered before in my past life - and that's Wave Soldering VIA holes. | | | | | | We've been getting a rash of defects that we call in this company, "insufficient solder in VI

Re: Wave Solder Problems - VIA HOLES

Electronics Forum | Fri Jun 04 17:10:59 EDT 1999 | C.K.

| | | I'm encountering a new problem at my new company that I haven't encountered before in my past life - and that's Wave Soldering VIA holes. | | | | | | We've been getting a rash of defects that we call in this company, "insufficient solder in VI

Dymax vs Humiseal Urethane Confomals.... Anyone?

Electronics Forum | Tue Feb 03 13:39:08 EST 2009 | grics

Good morning Jamie. I work at a CM and can offer some input on process flexability. I do not have any data on how reliable the coating is but I can say that they are both very difficult to control. Will you be selective coating or full coating? Ho

Re: Cylindrical diodes Missing during SMT process.

Electronics Forum | Tue Aug 24 15:10:14 EDT 1999 | Ian T

| | | | | Hello everyone, | | | | | We found many cylindrical diodes missing during SMT process. Could someone tell us how to prevent this problem? Is it effective to change the shape of stencil apture or reduce fan speed in reflow oven? Thanks in ad

Re: Cylindrical diodes Missing during SMT process.

Electronics Forum | Wed Aug 25 01:25:49 EDT 1999 | Gyver

| | | | | | Hello everyone, | | | | | | We found many cylindrical diodes missing during SMT process. Could someone tell us how to prevent this problem? Is it effective to change the shape of stencil apture or reduce fan speed in reflow oven? Thanks i


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