3 ms·
It's possible that he did reflow the board. Consumer ovens usually reach 250C, slightly more when in autoclean mode. Lead-free reflow happens above 250C (normal
by jwr 12y ago
It's possible that he did reflow the board. Consumer ovens usually reach 250C, slightly more when in autoclean mode. Lead-free reflow happens above 250C (normally 255-275C).
The whole procedure is wild, though, and I wouldn't recommend trying it out. He was lucky that the board didn't get destroyed. Most SMD components can withstand temperatures above 250C for tens of seconds, not necessarily for nine minutes.
- lostlogin 12y agoAs an anecdata point, mine says it goes to 300. I get 230-250. Bread likes it hot.
- akiselev 12y agoI'm guessing he put the board in and then started the oven which took a while to preheat. Industrial reflow heats up the board gradually based on the solder paste manufacturer's suggested heat profile or experimentation/trial and error (e.g. when dealing with small pitch BGAs). 250C for even a few minutes would do quite some damage even to the fire retardant laminate and smell horrible.
- Someone 12y agoBut he writes "and turned the oven up to 340 F". That's about 170 Celsius. The oven probably isn't very precise, but I doubt that's in the 250 Celsius range.
- tnorthcutt 12y agoHe stated he was using a temperature of 340F, which is roughly 170C. Would that temperature also be harmful to SMD components when exposed for several minutes?
- mng2 12y agoDoubtful. As a reference point, typical guidelines for baking out moisture (prior to assembly) are 24 hours at 150C.