Electronics Forum | Thu Dec 24 02:17:22 EST 1998 | Chris Grendler
Anyone ever attach gold bump flip chip to FR4 or Alumina substrates. Am trying to find a solder which is acceptable for use on gold. Am worried about gold imbrittlement since the gold bumps on the flip chip are .004"x.004"x.001" solid gold. The pit
Electronics Forum | Thu Dec 24 09:32:53 EST 1998 | Earl Moon
| Anyone ever attach gold bump flip chip to FR4 or Alumina substrates. Am trying to find a solder which is acceptable for use on gold. Am worried about gold imbrittlement since the gold bumps on the flip chip are .004"x.004"x.001" solid gold. The p
Electronics Forum | Thu Dec 24 13:29:19 EST 1998 | Chris Grendler
| | Anyone ever attach gold bump flip chip to FR4 or Alumina substrates. Am trying to find a solder which is acceptable for use on gold. Am worried about gold imbrittlement since the gold bumps on the flip chip are .004"x.004"x.001" solid gold. The
Electronics Forum | Mon Dec 28 12:34:50 EST 1998 | Jon Medernach
Inorder to pick up 0402's RELIABLY correction is required in X & Y axis. Their are Chip Shooter that do this, (KME Create, and Sanyo) You can also place at +/- .002" at 43K cph with a Chip Shooter Bulk feeding is also desirable. It is not only the
Electronics Forum | Tue Dec 22 12:32:16 EST 1998 | Earl Moon
| Folk's, | I'm in need of some help / direction. I'm working on my thesis for a masters based on looking at the effect's of the solder resist promoting / reducing the amount of solder ball's during wave. I'm looking at thing's like colour, texture,
Electronics Forum | Tue Dec 22 17:12:26 EST 1998 | Dave F
| Folk's, | I'm in need of some help / direction. I'm working on my thesis for a masters based on looking at the effect's of the solder resist promoting / reducing the amount of solder ball's during wave. I'm looking at thing's like colour, texture,
Electronics Forum | Thu Dec 24 03:49:45 EST 1998 | John Watt
| | | Folk's, | | | I'm in need of some help / direction. I'm working on my thesis for a masters based on looking at the effect's of the solder resist promoting / reducing the amount of solder ball's during wave. I'm looking at thing's like colour,
Electronics Forum | Tue Dec 15 15:21:24 EST 1998 | Chrys
| SMTneters, | I'm famialiar with lambda, omega, and gemini waves but not with "A" wave. Can somebody give me an explanation? | | thanks | | Tom B. | Tom, The term "A" wave refers to an asymetrical wave. It's an Electrovert term that describes
Electronics Forum | Wed Dec 09 14:36:26 EST 1998 | Earl Moon
| Hi, I know for sure that by controlling temp. and humidity | conditions in SMT assy lines room, one gets advantage in | screen printing, adhesive dispensing, and pick&place | machines mainteinance. Does any one have any advice on why | else is a c
Electronics Forum | Wed Dec 09 15:54:05 EST 1998 | Dave F
| Hi, I know for sure that by controlling temp. and humidity | conditions in SMT assy lines room, one gets advantage in | screen printing, adhesive dispensing, and pick&place | machines mainteinance. Does any one have any advice on why | else is a c
