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Date: April 01, 1987 18:11
From: KIM::DOWNEND
To: @SYS$MAIL:ENGINEER
The Atari PCB line is building about 650 NAMCO-designed Rolling Thunder PC Boards. Each Rolling Thunder PCB has (2) surface mount devices (SMD). They are plastic flat packs with gull-wing leads. Each SMD has 80 pins on 20-25 mil centers; there are 24 leads on two sides and 16 leads on the other two sides. Normally, the SMD's are attached first, using "vapor-phase" or "re-flow" equipment, and then the pin-in-hole parts are wave-soldered as a second step. To do this successfully however, requires the use of certain types of fluxs during wave-solder and a FREON wash after wave-solder. Since Atari does not have the right flux/wash, we cannot use that processing method. Instead, the PCB's will be wave soldered here at Atari as usual, then the PCB's will be sent out to have the SMD's attached as a second step. They will hand-solder each pin of the SMD. The Cost: $3.00 per PCB ($1.50 per part).
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Date: April 13, 1987 12:28
From: KIM::DOWNEND
To: @SYS$MAIL:ENGINEER
Put it in print and it's bound to be wrong. The 80-pin SMD's in Rolling Thunder are being soldered on at a cost of $3.00 each, total of $6.00 per board, not the originally quoted $1.50 each, $3.00 per board.
Apr 01, 1987