Electronics Forum | Tue Oct 13 16:26:26 EDT 1998 | Earl Moon
| | We suffered our first blood letting because of razor sharp edge clamps (DEK 265LT) and operator giving it the finger. While positioning magnetic tooling pins, one of our best slipped and really sliced off a part of his main digit. This will impac
Electronics Forum | Tue Sep 22 09:59:15 EDT 1998 | Mike C
| Hi Jacqueline! | Do these joints that you're having problems with happen to be on fine pitch solder joints? Are the fillets staying attached to the foot and separating from the pads cleanly? | If that is true, are there many vias concentrated
Electronics Forum | Fri Sep 11 17:23:00 EDT 1998 | Eric Miller
Hey Dave, sounds like your material is delaminating at a rapid rate, I would not recommend using them through your process, delaminating material has to go some where! When composite material is made, layers of fibre glass and epoxy resin are placed
Electronics Forum | Sat Sep 12 20:34:05 EDT 1998 | Rick Bell
| | | I was wanting to know if double sided reflow can be done with a metal plated BGA on topside. We would be running bottom side first. My boss seems to think the only way it can be done is by placing glue dots on the bottomside compoents becaus
Electronics Forum | Fri Sep 11 14:45:03 EDT 1998 | Earl Moon
| | I was wanting to know if double sided reflow can be done with a metal plated BGA on topside. We would be running bottom side first. My boss seems to think the only way it can be done is by placing glue dots on the bottomside compoents because t
Electronics Forum | Thu Sep 10 17:38:30 EDT 1998 | Dave F
| I was wanting to know if double sided reflow can be done with a metal plated BGA on topside. We would be running bottom side first. My boss seems to think the only way it can be done is by placing glue dots on the bottomside compoents because the
Electronics Forum | Thu Sep 03 15:43:18 EDT 1998 | Tim Flanagan
I need advice for locating 23 Gull wing LED's (all in a straight line) in the x,y, and z axis for a SMT PCB. It is a Hewlett Packard LED (P/N HMLA-QH00-01). The application uses a CCD to detect the position of a ball which floats in a resevior for
Electronics Forum | Tue Sep 08 15:11:26 EDT 1998 | Mike Demos
Rich: In my experience, I have seen three cases of SMT Capacitors cracking: 1. Due to thermal shock when entering the wave solder. Note that these were 1210 package sizes on the wave solder side of the boards. We were able to trace this back to th
Electronics Forum | Tue Sep 01 20:36:05 EDT 1998 | Rin Or
| We are experiencing shorting on a BGA. The part has a 1mm pitch with a 196 I/O count. The problem seems to pop up without warning & disappear in the same manner. | Our pad design is .020" diameter pads with .025" solder resist diameter. The ce
Electronics Forum | Tue Sep 01 19:31:36 EDT 1998 | Kallol Chakraborty
| We are experiencing shorting on a BGA. The part has a 1mm pitch with a 196 I/O count. The problem seems to pop up without warning & disappear in the same manner. | Our pad design is .020" diameter pads with .025" solder resist diameter. The ce
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