Quote:
Originally Posted by Chris K
I have an opportunity to buy a NOS 12QP4 Bob. Is it a direct replacement for the 12JP4? Do I need an ion trap for 12QP4?
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Datasheet says it needs an external ion trap magnet. Here are the links so you can compare the dimensions.
https://frank.pocnet.net/sheets/127/1/12JP4.pdf
https://frank.pocnet.net/sheets/127/1/12QP4.pdf