No they are not. MRF151G is still popular especially, several sources. They are
also used in many broadcast television amplifiers, so they won't be gone soon.
In new designs, choose 50 V and use a 48 V telecom power supply.
73
John
K5PRO
> Are 32 V LDMOS amplifier transistors becoming scarce, or hard to find, as
> spares, due to the newer 50V LDMOS taking over new designs?
>
> I assumed they are still around because they are listed in Digi Key and other
> suppliers, but found out that they are disappearing from some Catalogs.
> The question is raised, because a lot of Amp Boards exist surplus with the
> 28-32 Volt devices. Looks like maybe new Ham designs should migrate to 50
> volt devices. yes/no?
>
> I have a number of prototype boards from Pineapple Technologies with BLF
> 861A and BLF 872 32 V devices...
>
>
> Best Regards,
> Pat Barthelow AA6EG
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