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Electronics Forum | Fri Aug 21 07:38:34 EDT 1998 | Tryin'
| | Will somebody please explain HASL (here). Thanks. | Tryin: HASL: Hot Air Solder Leveled. A board fabrication process that applies an oxidation preventing solder coating to copper pads on the board. Dave F You do this to keep the green stuff (
Electronics Forum | Sat Aug 15 13:26:05 EDT 1998 | Bob Willis
| Electrical Eng. is looking for 5 micrograms per sq centimeter. After the board has been cleaned. Is this possible on a fully assembled bd? The European standard often quoted is 1.5 mg/cm which ia achievable on a board assembly please remember one
Electronics Forum | Mon Aug 10 11:16:58 EDT 1998 | Jason Gregory
What exactly is the criteria needed to determine the right solder paste. I have been fortunate enough in the past to have a solder paste work "halfway" for me and to modify the reflow profile or simply just "drop in" a paste and monkey with the profi
Electronics Forum | Mon Aug 10 11:58:33 EDT 1998 | Wayne Bracy
| | I am trying to get an idea of what system seems to work best for solder paste inspection. I am looking for basic table top models with he capabilites of height and width measurements. Can anyone give me suggestions, pricing and why you prefer
Electronics Forum | Wed Jul 22 20:46:13 EDT 1998 | Dave F
| Is there anybody with knowledge in the process with PHT components (Components with terminals) - Cause with make board with top and bottom side, with SMD and Auto Insertion Technology. So we want to do a Entire Cell with both technology, and witho
Electronics Forum | Thu Jun 25 16:13:05 EDT 1998 | Mike McMonagle
I am looking for a little enlightenment with an issue that we have been seeing. We have SMT assemblies with poor solderability on TSOP and mini-QFP type devices. The solder appears to have incomplete reflow and/or grainyness to the joints. Everything
Electronics Forum | Thu Jun 25 10:05:05 EDT 1998 | Chris Sargent
I have got a strange problem with a customers board. The problem being that I have had a number of boards returned to myself for Dry Joints. When you examine the joints, the solder fillet is perfect, the only problem being that it is attached to th
Electronics Forum | Thu Jun 25 14:45:55 EDT 1998 | Chrys
| I have a single-sided board with test vias that pass through the board. The test vias are pasted and reflowed with the SMT components on the top side. When the boards are wavesoldered, the solder coverage on the vias is spotty. Some will sold
Electronics Forum | Mon Jun 22 21:46:33 EDT 1998 | Dave F
| I am looking for alternate suppliers of Hollis wave solder fingers other than Speedline(Electrovert) The Model and S/N of the wave solder is | Model 207944 | Serial # F11132 | Please let me know if you are a vendor or know of a vendor. Your help w
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
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