Electronics Forum | Tue Dec 01 07:24:44 EST 1998 | Earl Moon
| Hi folks , | Lately we are seeing a lot of rawcards with black spots on the pads - most of them have Au finish(immersion gold) . We did a lot of inspecton after wave solder and found that only (fine pitch) QFP are affected the most. Our inspection
Electronics Forum | Tue Dec 01 07:54:49 EST 1998 | kallol chakraborty
| | Hi folks , | | Lately we are seeing a lot of rawcards with black spots on the pads - most of them have Au finish(immersion gold) . We did a lot of inspecton after wave solder and found that only (fine pitch) QFP are affected the most. Our inspec
Electronics Forum | Tue Dec 01 09:02:18 EST 1998 | Earl Moon
| | | Hi folks , | | | Lately we are seeing a lot of rawcards with black spots on the pads - most of them have Au finish(immersion gold) . We did a lot of inspecton after wave solder and found that only (fine pitch) QFP are affected the most. Our in
Electronics Forum | Fri Dec 04 20:26:34 EST 1998 | kallol Chakraborty
| | | | Hi folks , | | | | Lately we are seeing a lot of rawcards with black spots on the pads - most of them have Au finish(immersion gold) . We did a lot of inspecton after wave solder and found that only (fine pitch) QFP are affected the most. Ou
Electronics Forum | Fri Dec 04 20:37:45 EST 1998 | kallol chakraborty
| | | | | Hi folks , | | | | | Lately we are seeing a lot of rawcards with black spots on the pads - most of them have Au finish(immersion gold) . We did a lot of inspecton after wave solder and found that only (fine pitch) QFP are affected the most
Electronics Forum | Wed May 05 06:19:41 EDT 2021 | jineshjpr
Hi Anyone having IPC 4552 A ?? Can You please provide the details of Immersion Gold Thickness Recommendations mentioned in Page 21 & Additional details required for Immersion Gold Thicker Than Specification by Design mentioned in page 23.
Electronics Forum | Tue May 06 15:33:36 EDT 2008 | operator
I know IPC-A-610 RevD has requirements for Gold Fingers and solder contamination. Is there any such requirements for Gold Mounting Holes, Gold Pressure Fit Socket Lands (SMT pads), Exposed Gold Traces ? Wouldn't these all be considered "critical cont
Electronics Forum | Tue May 11 08:20:52 EDT 2021 | jineshjpr
Hi Anyone having IPC 4552 A ?? Can You please provide the details of Immersion Gold Thickness Recommendations mentioned in Page 21 & Additional details required for Immersion Gold Thicker Than Specification by Design mentioned in page 23.
Electronics Forum | Tue Apr 27 12:33:37 EDT 2021 | SMTA-64304163
We have some circuit boards with some burnishing on the gold fingers from beveling. Does not go through the gold but is cosmetically noticeable. Is this a defect? Is it rejectable or cosmetic? Can someone tell me where the IPC deals with this? I ha
Electronics Forum | Thu Sep 30 10:30:11 EDT 1999 | Chris May
I am having problems processing immersion gold boards. The achieved solder joints appear acceptable a la IPC-A-610, but the resultant joint does not fully cover the land, i.e. you can still see an outline of gold pad. What is the best way to achieve
IPC is the trade association for the printed wiring board and electronics assembly industries.
Training Provider / Events Organizer / Association / Non-Profit
3000 Lakeside Drive, 309 S
Bannockburn, IL USA
Phone: 847-615-7100
