Electronics Forum: lid attach (Page 1 of 2)

lid soldering problems (CQFP, Au/Sn solder)

Electronics Forum | Thu Sep 17 07:06:15 EDT 1998 | joakim fagerlund

We have problems with voids when we solder lids to ceramic flatpackages. The sealring of the package is gold(100 micro inches or 2.5 micro meters)with a underlayer of Nickel The solder is attached to the lid (preform) and the solder material is Au/S

Re: lid soldering problems (CQFP, Au/Sn solder)

Electronics Forum | Thu Sep 17 10:45:27 EDT 1998 | Justin Medernach

| We have problems with voids when we solder lids to | ceramic flatpackages. | The sealring of the package is gold(100 micro inches or 2.5 micro meters)with a underlayer of Nickel | The solder is attached to the lid (preform) and the solder material

Re: lid soldering problems (CQFP, Au/Sn solder)

Electronics Forum | Tue Sep 22 10:52:31 EDT 1998 | Wayne Bracy

| We have problems with voids when we solder lids to | ceramic flatpackages. | The sealring of the package is gold(100 micro inches or 2.5 micro meters)with a underlayer of Nickel | The solder is attached to the lid (preform) and the solder material

Re: lid soldering problems (CQFP, Au/Sn solder)

Electronics Forum | Fri Sep 18 08:49:12 EDT 1998 | Earl Moon

| | We have problems with voids when we solder lids to | | ceramic flatpackages. | | The sealring of the package is gold(100 micro inches or 2.5 micro meters)with a underlayer of Nickel | | The solder is attached to the lid (preform) and the solder

Indium Solder Hermetic Seal Voiding

Electronics Forum | Wed Jan 10 17:18:11 EST 2007 | flipit

I am soldering a Germanium Window with a > metalized rim to a Ni-Au plated kovar lid. The > solder joint needs to be hermetic. I am using > 80In solder washer shape preform, but am > experiencing lots of voiding when x-rayed, > although the jo

Indium Solder Hermetic Seal Voiding

Electronics Forum | Thu Jan 11 17:01:43 EST 2007 | flipit

The N2 would allow you to use less flux since the oxidation level will be reduced in an oxygen free environment. How about using adhesive to attach the lid?

Tester Source

Electronics Forum | Fri Apr 07 18:20:11 EDT 2000 | Gary Moravchik

Good Afternoon..... This message is for the "packaging" types in our industry. I am seeking the source of a PIND Tester (Particle Impact Noise Detector). It is used to detect whether loose bodies or contaminants may be present in a hybrid package

BGA vrs CGA....

Electronics Forum | Sat Sep 20 11:24:27 EDT 2003 | Gabriele

Few questions: - wich type of C-CGA ? (CAST or CLASP column to ceramic attach) - column pitch ? - column count ? - capped (with lid) ? or capless (c4 die on top)? - PCB board zize and thickness ? - volume of solder paste ? - Clean or not Clean so

BGA vrs CGA....

Electronics Forum | Sat Sep 20 11:44:39 EDT 2003 | Gabriele

Few questions: - wich type of C-CGA ? (CAST or CLASP column to ceramic attach) - column pitch ? - column count ? - capped (with lid) ? or capless (c4 die on top)? - PCB board zize and thickness ? - PCB copper finisch ? (OSP,HASL, ENIG, etc) - v

Gold/Tin Reflow

Electronics Forum | Fri Jun 27 08:41:40 EDT 2014 | hungikuo

Is it safe to let Au80Sn20 reflow twice? What I am saying is, for example, die attach using Au80Sn20, followed by lid seal using same Au80Sn20 solder, will it create any problem on the die which was first attached using same soldering material? My

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