All 1N4148 diodes I have ever seen were made of glass...If it got hot enough to melt glass, the board would be burned...Long before that could happen the diode would open...I suspect something else is at work here...
Jerry, wa2dkg
>Hey there Elecraft! I just noticed that D18 on the back of rf bd got fried.
The diode looks melted in the middle,<
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