D1273 is an NPN (BJT) transistor manufactured by Panasonic. BJT stands for Bipolar Junction Transistor and is used in power amplification and switching applications.

Part number : 2SD1273, 2SD1273A

Function: Silicon NPN triple diffusion planar type transistor

Package information : TO-220 Type

Manufacturer: Panasonic Semiconductor

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Description

D1273 is an NPN transistor used in low-voltage and high-current applications, mainly in audio amplifiers, power supply circuits, and motor drivers.

Features

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

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

Pinout

Absolute maximum ratings ( Ta=25°C )

1. Collector to Base Voltage : Vcbo = 80 V

2. Collector to Emitter Voltage : Vceo = 80 V

3. Emitter to Base Voltage : Vebo = 6 V

4. Collector Current : Ic = 3 A

5. Total Dissipation : Pc = 2 W

6. Junction Temperature : Tj = 150°C

7. Storage Temperatue : Tsg = -55 ~ +150°C

D1273 Datasheet PDF

B688 is a PNP (Bipolar Junction Transistor) transistor. This transistor is a common transistor used in power amplification, switching, and control applications.

Part number : 2SB688

Function : High-Power PNP Silicon Power Transistors ( 8A, 120V, 80Watt )

Package: TO-247-3 Pin Type

Manufacturer: Mospec

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Description

B688 transistor is designed for high voltage (120V) and high current (8A) applications. This allows them to handle significant power and perform large voltage swings. The 2SB688 is effectively used in low and mid frequency applications.

Product Information

B688 designed for use in general-purpose amplifier and switching application.

1. Recommend for 45 – 50W Audio Frequency Amplifier Output stage.

2. Complementary to 2SD718

Pinout

 

Absolute maximum ratings ( Ta=25°C )

1. Collector to Base Voltage : Vcbo = 120 V

2. Collector to Emitter Voltage : Vceo = 120 V

3. Emitter to Base Voltage : Vebo = 5 V

4. Collector Current : Ic = 8 A

5. Total Dissipation : Pc = 80 W

6. Junction Temperature : Tj = 150°C

7. Storage Temperatue : Tsg = -55 ~ +150°C

 

B688 Datasheet PDF