A2099 PDF Datasheet – 50V, PNP Transistor – 2SA2099

This post explains for the transistor.

The Part Number is A2099, 2SA2099.

The function of this semiconductor is -50V, -10A, PNP transistor.

The package is TO-220ML Type

Manufacturer: Sanyo Semiconductor

Preview images :A2099 datasheet pinout


A2099 is PNP Epitaxial Planar Silicon Transistor. A PNP transistor is a type of bipolar junction transistor (BJT) with a different structure and polarity compared to an NPN transistor.

Characteristics of PNP transistors:

1. Structure: A PNP transistor has a sandwich-like structure, consisting of a thin N-type layer (base) sandwiched between two P-type layers (emitter and collector).

2. Polarity: In a PNP transistor, the majority charge carriers are holes, which flow from the emitter to the collector. The emitter is negative relative to the base, and the collector is positive relative to the base.

3. Current flow: When a small current is applied to the base terminal, it allows a much larger current to flow from the emitter to the collector. This is called amplification or gain, and it makes the PNP transistor useful as an electronic switch or amplifier.



• Adoption of  MBIT processes.

• Large current capacitance.

• Low collector-to-emitter saturation voltage.

• High-speed switching


Absolute maximum ratings ( Ta=25°C )

1. Collector to Base Voltage: Vcbo = – 50 V

2. Collector to Emitter Voltage: Vceo = – 50 V

3. Emitter to Base Voltage: Vebo = – 6 V

4. Collector Current: Ic = – 10 A

5. Collector Dissipation : Pc = 25 W

6. Junction Temperature: Tj = 150°C

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

A2099 pdf transistor


• Relay drivers, lamp drivers, motor drivers.

A2099 PDF Datasheet