Im replacing transistors in a couple Memphis st1000d's. I only need 6 irf640's and 12 irf9640's. Im unable to get matching date codes unless I order 50 of each from Mouser. I tried ordering from Jameco and the tech told me that transistors don't have date codes. Does anyone have any suggestions? And just how important are matching date codes?
I have never bothered matching transistors in any of my mosfet designs and I haven't ever had a problem.
The drain resistors should help equalise things.
If you really need to then I would suggest a semiconductor analyser to measure gate turn on voltages.
You can then match them yourself.
The drain resistors should help equalise things.
If you really need to then I would suggest a semiconductor analyser to measure gate turn on voltages.
You can then match them yourself.
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