Electronics Forum | Thu Oct 07 14:40:31 EDT 1999 | Carol Zhang
I have a board, 4 spacers needed to be soldered on the board first with the normal 62Sn37Pb alloy. Then, capacitors are manually soldered on the boards. The density of the board is quite high. If we wave soldered capacitors first, there will be no p
Electronics Forum | Thu Oct 07 15:39:59 EDT 1999 | Carol Zhang
| I have a board, 4 spacers needed to be soldered on the board | first with the normal 62Sn37Pb alloy. Then, capacitors are manually soldered on the boards. The density of the board is quite high. If we wave soldered capacitors first, there will b
Electronics Forum | Fri Oct 08 08:26:03 EDT 1999 | Carol Zhang
| | | I have a board, 4 spacers needed to be soldered on the board | | | first with the normal 62Sn37Pb alloy. Then, capacitors are manually soldered on the boards. The density of the board is quite high. If we wave soldered capacitors first, ther
Electronics Forum | Tue Oct 12 08:48:16 EDT 1999 | Carol Zhang
| | I have a board, 4 spacers needed to be soldered on the board | | first with the normal 62Sn37Pb alloy. Then, capacitors are manually soldered on the boards. The density of the board is quite high. If we wave soldered capacitors first, there wi
Electronics Forum | Fri Oct 08 16:48:57 EDT 1999 | Dave F
| I have a board, 4 spacers needed to be soldered on the board | first with the normal 62Sn37Pb alloy. Then, capacitors are manually soldered on the boards. The density of the board is quite high. If we wave soldered capacitors first, there will b
Electronics Forum | Thu Oct 07 16:57:02 EDT 1999 | Glenn Robertson
| | I have a board, 4 spacers needed to be soldered on the board | | first with the normal 62Sn37Pb alloy. Then, capacitors are manually soldered on the boards. The density of the board is quite high. If we wave soldered capacitors first, there wi
Electronics Forum | Fri Oct 08 10:08:48 EDT 1999 | Glenn Robertson
| | | | I have a board, 4 spacers needed to be soldered on the board | | | | first with the normal 62Sn37Pb alloy. Then, capacitors are manually soldered on the boards. The density of the board is quite high. If we wave soldered capacitors first,
Electronics Forum | Thu Jan 08 15:49:10 EST 2015 | emeto
I bet you that the problem comes from the ENIG brittle solder joints. About low temperatures I think you can go to the absolute 0 and the device should still work.
Electronics Forum | Wed Jan 07 17:39:26 EST 2015 | duchoang
Additional info: I use SAC305 solder paste on Enig PCB.
Electronics Forum | Wed Jan 07 17:34:52 EST 2015 | duchoang
Customer puts our board to thermal test. Test cycle is -55c to 85c, repeat cycle in 15-20min. After 600 cycles, lot of TSOP joints are cracked, leads lifted. There are reasons such as thin PCB, mechanical impacts, warped PCB... My question is, how lo
