Electronics Forum: making (Page 771 of 830)

Re: Need advice on fixturing a smt LED board

Electronics Forum | Fri Sep 04 09:33:40 EDT 1998 | Stefan W.

| I need advice for locating 23 Gull wing LED's (all in a straight line) in the x,y, and z axis for a SMT PCB. It is a Hewlett Packard LED (P/N HMLA-QH00-01). The application uses a CCD to detect the position of a ball which floats in a resevior fo

Re: Cracking Capacitors

Electronics Forum | Wed Sep 09 10:02:46 EDT 1998 | Earl Moon

| | | I am in need of possible causes and solutions to capacitors that are failing in the field. | | | Are there issues in our process that need to be | | | checked? | | | Some people said the problems are due to improper | | | storage. Others sa

Re: Corrosiveness Measure

Electronics Forum | Fri Sep 04 09:51:34 EDT 1998 | Dave F

| | | | | | | | | We�ve been thinking again and need your help in sorting through an issue related to deionized (DI) water cleaning of assembled boards. | | | | | | | | | THE BACKGROUND: The water reclaiming systems goes: gross filter, fine filter,

Re: Brain Cells

Electronics Forum | Fri Aug 28 11:21:07 EDT 1998 | Justin Medernach

| | | Damn Wayne, | | | | If I knew as much as you, Justin, Steve, his dad, and others know, or knew, I'd be happy to be the UGLY. The plus of a forum like this is it keeps us on our toes and keeps our brain cells alive or constantly searching for re

Re: Conductive adhesive

Electronics Forum | Mon Aug 24 08:44:52 EDT 1998 | Justin Medernach

| | | Require a conductive adhesive - either isotropic or anisotrpic - which can be used for 100micron oitch devices. | | | Must be resistant to solvents such as MEK and acetone. | | | Cure below 150C, with possible potential for rework of the conec

Re: Green coating and through-hole plating

Electronics Forum | Fri Aug 14 07:27:42 EDT 1998 | Earl Moon

| | Hi, can you please tell me how to make green coating and through-hole plating of PCB? Thanks! | | Xingsheng | Xingsheng: Welcome. | Bible on PCB fabrication: Printed Circuits Handbook, Clyde Coombs, McGraw-Hill | Web resources: http://www.pw

Re: Green coating and through-hole plating

Electronics Forum | Fri Aug 14 08:59:51 EDT 1998 | Dave F

| | | Hi, can you please tell me how to make green coating and through-hole plating of PCB? Thanks! | | | Xingsheng | | Xingsheng: Welcome. | | Bible on PCB fabrication: Printed Circuits Handbook, Clyde Coombs, McGraw-Hill | | Web resources: htt

Re: Bob Willis Free Advertising and more serious issues

Electronics Forum | Fri Aug 07 07:44:56 EDT 1998 | Earl Moon

| | | No sour grapes, | | | This has gone on too long. I expect no free advertising, nor do I seek it. It is clearly understood Bob is an industry leading consultant. What is not understood, at least by me, how he is allowed to "advertise" so freely

Re: BGA reflow profile

Electronics Forum | Tue Jul 28 02:22:59 EDT 1998 | Bob Willis

Here is what I would do faced with your problem. First I would profile a similar board or use an existing profile. From there I would place the dummy device on the surface of a sample board with a thin thermocouple soldered to the board surface under

Re: Solder Joint Problem

Electronics Forum | Thu Jun 25 14:33:51 EDT 1998 | Chry

| Hi there Chris! | Are the leads you talking about fine pitch? Is the complete fillet attached to the foot, with it being cleanly separated from the pad? I bet if you look at the board there will be via's really close to the pads at the location


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