Electronics Forum: amps (Page 6601 of 7890)

Re: Double sided reflow

Electronics Forum | Fri Apr 03 03:41:04 EST 1998 | Frank J. de Klein

150 secs. On bilayer boards (Cu only at top and bottom) you can typically not reach differences top to bottom bigger then 35-40 C. For multilayers however, the maximum is 15-20 C. If you actively cool a multi- layer at the bottom during the 2nd pass,

metal squeegees hide printer deficencies

Electronics Forum | Thu Feb 12 20:36:26 EST 1998 | Jon Medernach

| Using metal squeegees on GSPs has caused premature stencil wear. Has | anyone had any success with this combination? How much snap off did you | use? We are using .5 mm pitch and have a no clean process. Stencil wear is is minimal but exists. T

Re: QUAD 4-C

Electronics Forum | Tue Feb 24 12:37:43 EST 1998 | Robert

| We are facing some placement problems with | our QUAD 4-C. | Program was running fine last week, Next week | program will be off (placement, pickup,vision files | etc, | Any help, any idea,??? | Thanks Sorry your having trouble, I also have a IVc t

Re: QUAD 4-C

Electronics Forum | Sat Feb 28 01:14:29 EST 1998 | Ray

| | We are facing some placement problems with | | our QUAD 4-C. | | Program was running fine last week, Next week | | program will be off (placement, pickup,vision files | | etc, | | Any help, any idea,??? | | Thanks Glass scales ARE the problem. Th

Re: MYDATA TP9-UFP CORE DUMP ERRORS

Electronics Forum | Fri Feb 13 09:34:43 EST 1998 | Johanna Medero-McGoff

Good morning, We presently have a TP18 and have also experienced the core-dumped fatal error. Everytime that it has happened is when the machine is automatically searching for the reference points, before it starts assembling. Mydata suggested to

Re: MYDATA TP9-UFP CORE DUMP ERRORS

Electronics Forum | Thu Feb 19 14:19:15 EST 1998 | Rin Or

| Good morning, | We presently have a TP18 and have also experienced | the core-dumped fatal error. | Everytime that it has happened is when the machine | is automatically searching for the reference | points, before it starts assembling. | Mydat

Re: MYDATA TP9-UFP CORE DUMP ERRORS

Electronics Forum | Sat Jan 24 15:52:53 EST 1998 | Bill McKnight

| Has anyone experianced Core Dump errors with their MYDATA TP9? | My machine (2/96) has 26 million placements and my operators | have recorded 253 core dumps in 1996, 238 in 1997, and 18 in | January of 1998. We run one job on the machine, period.

Re: Solder Paste

Electronics Forum | Fri Feb 20 14:33:47 EST 1998 | Dave McFadyen

Looks like (so far) we have a concensus. Follow the paste manufacturers guidelines on storage. Normally, refrigeration is required to achieve max shelf life between 3 and 6 months in original closed container. Water-wash pastes are much more active t

Re: Solder Printing Stencil design

Electronics Forum | Wed Jan 28 19:56:29 EST 1998 | Steve Gregory

Raymond, Have you ever heard of Band-Etch, or another term called Band-width Etch? It's a trademarked process of stencil etching from a company named BeamOn Technology, they're out here in "Silly-con" valley (408) 982-0161. They way they etch their

Soldering Temperature for TQFP160

Electronics Forum | Tue Jan 20 06:46:39 EST 1998 | IgmarG

This is a re-post of my previous message. I typed my Email address wrong in the other message. I am sorry for any inconvenience caused. Is there anyone who can tell me what is the maximum allowable soldering temperature when soldering a TQFP (Thin Qu


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