Electronics Forum: does (Page 131 of 882)

Bulbous joints from wavesoldering

Electronics Forum | Fri Jul 03 04:03:36 EDT 1998 | Steve Cheung

Does anyone know why this typically occurs. We have seen capacitors crack due to stressing. Any good solutions? Regards, Steve.

Solder testing companies

Electronics Forum | Mon Jun 29 09:27:39 EDT 1998 | Ryan

Mornin' everybody! We are located in Lansing, Michigan and are looking for a company to test our wave machine solder content on a regular basis. Does anybody know of a local company that will do this? Can we do it ourselves cheaper? Thanks again.

TCE for Ais

Electronics Forum | Thu Jun 25 06:02:41 EDT 1998 | Chiakl

Hi there, Does any one know what is TCE for fully wet saturated FR4. I came to know that for Dry FR4 the TCE is about 15-19 PPM �C. Is that true? Appreciated for your help. rgs, chiakl

SMT Resistors

Electronics Forum | Tue Jun 23 17:57:23 EDT 1998 | Larry Hurst

Does anybody have any data on the thermal resistance and thermal time constant of 0805 and 1206, metal film, surface mount resistors when mounted on a typical PC board? Even approximate informatin would be useful. Thanks in anticipation. Larry Hurst

Re: Interest in Bulk Feeding

Electronics Forum | Mon Jun 29 12:15:02 EDT 1998 | coogan

Does the current Panasonic / KME bulk feeder design use the indexing concept developed by Taiyo Yuden (Japan), or is it based on the Nitto (pneumatic) concept?

Re: OSP with no clean fluxes

Electronics Forum | Fri Jun 19 19:07:07 EDT 1998 | Earl Moon

| Does anyone have wave solder experience using OSP and VOC free no clean flux? Well, Steve you back in action. Yes, it works fine. Earl Moon

Need info on Weller "SMT"

Electronics Forum | Fri Jun 19 03:41:24 EDT 1998 | Drew Shervin

I need info on the Weller Model "SMT" with MS-20 head & W-BU controller. Does anyone have specs or data on this unit ? Drew Shervin DBS Communications

Flip chips - need info on handling and packaging

Electronics Forum | Tue Jun 16 16:03:52 EDT 1998 | Diane Rogers

Does anyone have experience working with flip chips? I would like to know how to work with them, some precautions, inspection techniques, etc. Thanks! Diane...

Re: Wave soldering of 0402 Chips.

Electronics Forum | Mon Jun 15 14:00:32 EDT 1998 | Pete

Yes, whats your issue..... | Does any one wave solder the 0402 Chips on the bottom side of a board? | Any comments?

SMT process benchmarks??

Electronics Forum | Wed Jun 10 11:21:04 EDT 1998 | Kelly Morris

Does anyone have any info./studies on what the percentage or PPM defect rates are for each part of the typical SMT process. Example: Screen Print = 45% of total defects Component Placement = 25% of total defects


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