A1837 & C4793 (2SA1837 & 2SC4793) PNP-NPN Transistor Pair For Audio

A1837 is a silicon PNP epitaxial power transistor.

#. Audio Power Amplifier Applications
#. Driver Stage Amplifier Applications
#. High Transition Frequency: fT = 70 MHz (typ.)
#. Complement to C4793
#. TO-220 Package

C4793 is a silicon NPN epitaxial power transistor.

#. Audio Power Amplifier Applications
#. Driver Stage Amplifier Applications
#. High Transition Frequency: fT = 70 MHz (typ.)
#. Complement to A1837
#. TO-220 Package

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