The MJ3238 is a kind of bipolar PNP device in a hermetically sealed TO66 metal package.
The parameter of the MJ3238 can be summarized as:(1): VCEO is 150 V max;(2): Ic(cont) is 8 A max;(3): hFE is 20 min at 2.0/4.0(Vce/Ic);(4): ft is 20 M Hz typ; (5): Pd is...
The MJ2501 is a silicon epitaxial-base PNP power transistors in monolithic Darlington configuration and are mounted in Jedec TO-3 metal case. They are intented for use in power linear and switching applications.The complementary NPN type is the MJ3001.