Electronics Forum: about (Page 592 of 1194)

PCB Standards

Electronics Forum | Wed Jun 10 15:10:55 EDT 1998 | Rich

I am looking for the Industry standards on vias. Are they required to be plated with solder or is copper plating enough? What about reliabilty with either one? Also, if tenting the via is required should it be copper plated or solder plated over c

Re: price on ICT and FT testers

Electronics Forum | Wed Jun 10 13:26:53 EDT 1998 | Justin Medernach

| If i want to set up an assembly line, what would be the approximate cost for testers? Appreciate any replies. Yuan Yuan, Expect to pay about 300k for a decent ICT system. This price does not include fixtures. You can probably find something chea

Re: Double sided smt

Electronics Forum | Sun Jun 07 06:05:37 EDT 1998 | Bob Willis

| Can anyone tell me if there is a reference for smt component height specs on the bottom side of a board, which will also go through wave soldering. A current design I am reviewing has tant caps(7343) and a crystal on the back side. Should I only b

CCGA

Electronics Forum | Fri May 29 14:25:51 EDT 1998 | Earl Moon

Got handed an assignment for which I'm not totally qualified. Don't expect this forum to had me all the answers. Some answers are obvious as the device types are fairly self explanatory. As everyone knows, IBM had problems with their ceramic BGA dev

Re: Hot air knife in wave soldering/Look An Earlier Thread

Electronics Forum | Thu May 28 12:47:08 EDT 1998 | Dave F

| Hello, | | I need some users information about "hot air knife" after the wave | bath: | - Defects reduction ? | - In what kind of boards(TH/SMT SOICS ect.) it is applied ? | - Where can I purchase it as a retrofit (Soltec Delta 6622cc) ? |

Re: Bottom side smt and thru hole

Electronics Forum | Wed May 27 10:19:43 EDT 1998 | Jerry

We have no problems but orientation does matter. Orient with longest side of component body perpendicuar to wave. In other words the same preference as with through hole DIPS. Idea is the same as for through hole, that the surface tension will ten

Re: Cracking in High Voltage Chip Caps

Electronics Forum | Tue May 26 17:29:42 EDT 1998 | Earl Moon

| I know, I've read the "been there done that" stories about this subject, but I still profess ignorance on some aspects. | We are using NPO type dialectric caps in potted high voltage assemblies and continue to experience catastrophic vailures. U

Re: Paladium Leads Revisted

Electronics Forum | Sat May 23 17:30:44 EDT 1998 | Steve Gregory

| My question is: How does one recognize paladium leads so that the profile can be set properly? | Dave F Hi Dave, It's kinda' subjective, but what I think it looks like is almost like having a nickel appearance to it, it's smoother and not as

Re: QP2 vs GSM

Electronics Forum | Wed Jun 10 14:16:08 EDT 1998 | Robert Reilly

Jerry, I have been using the GSM for about 4.5 years. In my opinion this machine offers the most flexibility and upgradeability of any machine. The ease of use of the software is far superior to any other I have used . Hopefully you are using the

Re: Environmental Issues / Lead Thread On IPC

Electronics Forum | Mon May 25 08:57:57 EDT 1998 | Dave F

| Y'all: IPC set-up a site addressing the environmental issues of the printed circuit fabrication industry. Some of it is interesting and applicable to the assembly business as well, even though not aimed directly at assemblers. IPC has recently t


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