SMT Transistor markings P1F

[Stefan Bock]

Dose anyone know what the P1F markings on a transistor (SOT223) mean or
where to find any info on SMT devices. This transistor is out of a Meridian
telephone.
Many Thanks
Stefan

 

[Digi Man]

p1F
PMBT5550
Phi
N
SOT23 2N5550 140V npn


P1F PZT2222A Mot P 2N2222A sw npn