Wow, yes, that is bad. Where did you get the FETs from?
People do actually counterfeit electronic components sometimes, and it's possible that you actually got some counterfeit parts.
It may be that the FETs do work, but they just need higher voltages. I'd chosen the P36NF06L for some examples because it's one of only a few 'big' FETs that conducts a useful amount of power at 3.3v gate voltage - but it's possible someone repackaged some less good FETs in a P36NF06L package!
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Wow, yes, that is bad. Where did you get the FETs from?
People do actually counterfeit electronic components sometimes, and it's possible that you actually got some counterfeit parts.
It may be that the FETs do work, but they just need higher voltages. I'd chosen the P36NF06L for some examples because it's one of only a few 'big' FETs that conducts a useful amount of power at 3.3v gate voltage - but it's possible someone repackaged some less good FETs in a P36NF06L package!