The KSA1625-K is manufactured in a plastic TO-92 case. When looking at the flat side with the leads pointed downward, the three leads emerging from the transistor are, from left to right, the emitter, collector, and base leads. Here is an image showing the pin diagram of this transistor.
Classification of hFE
The KSA1625-K transistor can have a current gain of 100 to 200. The gain of the KSA1625 will be in the range from 40 to 200, for the KSA1625-L it will be in the range from 60 to 120, for the KSA1625-M it will be in the range from 40 to 80.
SMD Version of KSA1625-K transistor
The PBHV9040T (SOT-23), PBHV9040X (SOT-89), PBHV9040Z (SOT-223) and STR2550 (SOT-23) is the SMD version of the KSA1625-K transistor. These transistors are of the same type, have similar parameters and are designed for surface mounting.
KSA1625-K Transistor in TO-92 Package
The 2SA1625-K is the TO-92 version of the KSA1625-K.
Replacement and Equivalent for KSA1625-K transistor