Subject: Re: Don't do this! Just don't!
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Date: Mon, 20 Jan 2003 22:02:23 -0800
NNTP-Posting-Date: Mon, 20 Jan 2003 22:01:51 PST
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On Tue, 21 Jan 2003 00:07:16 +0100, "Frank Bemelman"
>"Spehro Pefhany" schreef in bericht
>> On Mon, 20 Jan 2003 23:32:01 +0100, the renowned "Frank Bemelman"
>> > schreef in bericht
>> >> This is no problem to the average fault finder, he just scrapes a
>> >> little bit off one of then 10K resistors with a scalpel... whoops too
>> >> much, now the other one... there now the pot's in range.
>> >I tried that once too, it's amazing how accurately you
>> >can 'tune' a resistor with a sharp razorblade.
>> You can make it open pretty easy too. Don't forget to put some
>> lacquer over the incision after the operation. Oh, and be sure to try
>> this on 0402 or smaller parts.
>Smaller than 0402? Good heavens...
>Hey, I just got an idea. 0402 is 40 x 20 mil. This means it
>fits easily inside a pcb hole of 32mil. If we use non-plated
>holes, and solder top and bottom... it would look like a
MELFs are better for inboard resistors. The circular cross section is
easier to assemble. The rectangular cross section parts suitable for
inboard mounting on a 1.6mm thick board, like 0603 and 0805, have a
tendency to short out due to solder drippage thru the hole. Hard to
control drippage when you have 100's of resistors "in" a board.
Santa Barbara, CA