B1274 & D1913 (2SB1274 & 2SD1913) PNP-NPN Transistor Pair For Audio

B1274 is a silicon PNP epitaxial power transistor.

#. Power Amplifier Applications
#. Wide ASO (Adoption of MBIT process).
#. Low saturation voltage.
#. High reliability.
#. High breakdown voltage.
#. Micaless package facilitating mounting.
#. Compliment to D1913
#. TO-220 Package

D1913 is a silicon NPN epitaxial power transistor.

#. Power Amplifier Applications
#. Wide ASO (Adoption of MBIT process).
#. Low saturation voltage.
#. High reliability.
#. High breakdown voltage.
#. Micaless package facilitating mounting.
#. Compliment to B1274
#. TO-220 Package

These transistors were widely used in audio amplifiers. These were used as voltage amplifiers and audio drivers.