I was trying to order some N and P mosfets, part #s
FQP47P06 ← P channels, instock at mouser
FQP50N06L ← N channels, back ordered at both mouser and digi until at least december.
These parts were/are for a large H bridge. After comparing prices (even if they were in stock) I realized I would save only about $25 over ordering an assembled H-Bridge capable of my needs from dimensionengineering.com. (once you factor in the other components.)
So I ordered an H-Bridge from them. Still, this seems to happen to me CONSTANTLY, and as a mostly newb, I have a really hard time telling what replacement parts might work instead, if the sites dont auto suggest for me.
For example, for the P mosfets, the ones that I want have
Input Capacitance (Ciss) @ Vds = 3600pf @ 25V
I found some that had all other specs exactly the same, but this spec was 1900pf @ 25v.
At just barely over half the input capacitance, I wasn’t sure if it would work, and I have no desire to spend $50 on mosfets that I will have no use for.
Are there other places to order from and/or are there general rules for comparing a non stocked part with a stocked part, when the specs are different?
IE could I have used the replacement mosfet I found if it was 4,500pf @ 25v?
Id have to start a new topic constantly to see if things are going to be interchangeable if there are not basic guidelines. IE (Higher is OK lower is not)
Thanks very much.