A970 PDF Datasheet – 120V, 100mA, PNP Transistor – 2SA970

This post explains for the transistor 2SA970.

The Part Number is A970.

The function of this semiconductor is -120V, -100mA, PNP Transistor.

The package is TO-92 Type.

Manufacturer: Toshiba

Preview images :A970 pdf transistor


A970 is 120V, 100mA, PNP Epitaxial Type Transistor. A PNP transistor is a type of bipolar junction transistor (BJT) with a different structure and polarity compared to an NPN transistor.


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.


• Low noise :

(1) NF = 3dB (typ.) RG = 100 Ω, VCE = −6 V, IC = −100 μA, f = 1 kHz :
(2) NF = 0.5dB (typ.) RG = 1 kΩ, VCE = −6 V, IC = −100 μA, f = 1 kHz

• High DC current gain: hFE = 200~700

• High breakdown voltage: VCEO = −120 V

• Low pulse noise. Low 1/f noise


A970 datasheet

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 = 100 mA

5. Collector Dissipation : Pc = 300 mW

6. Junction Temperature: Tj = 150°C

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


1. Low Noise Audio Amplifier

A970 PDF Datasheet