D1273 PDF – NPN Transistor – 2SD1273 – Panasonic

Part Number: D1273, 2SD1273

Function: 60V, 3A, Power Transistor

Pacakge: TO-220 Type

Manufacturer: Panasonic Semiconductor

Images:D1273 pinout datasheet


The D1273 is Silicon NPN triple diffusion planar type transistor.

A NPN transistor is a type of bipolar junction transistor (BJT) that consists of two n-type semiconductor materials separated by a single p-type material.

The NPN transistor is used to amplify or switch electronic signals and is widely used in many electronic circuits. It works by controlling the current flow between the collector and emitter terminals through the base terminal.

When a small current is applied to the base, it controls a much larger current between the collector and emitter, making the NPN transistor an effective amplifier or switch.

For power amplification with high forward current transfer ratio Complementary to 2SB1299


1. High foward current transfer ratio hFE
2. Satisfactory linearity of foward current transfer ratio hFE
3. Full-pack package which can be installed to the heat sink with one screw

D1273 pdf

D1273 Datasheet