Re: [sdiy] matching discreete transistors can be so easy ...

jhaible at jhaible at
Thu Aug 22 11:06:21 CEST 2002

>This is exactly how I tested the matching of my SMD dual transistors.
>I etched a PCB with room for many transistors. Then I soldered them to the
>board (remember - surface mounted).
>After that, I measurd each pair and wrote the result on the board next to
>When all transistors were measured, I took a jeweller's saw and cut out the
>best ones from the board, and soldered to 8 pin DIL component carriers.

Great! This is almost like on-waver testing for ICs...  8-)


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