Transistor 2SA844 PNP, 0.15A TO-92

Transistor 2SA844 PNP, 0.15A TO-92

Transistors

Reference: TR2SA844

Part.No: 2SA844

€0.80

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The 2SA844 is a reliable PNP Bipolar Junction Transistor (BJT) in a TO-92 package. Designed for small-signal amplification and low-power switching in general-purpose analog circuits, audio preamps, and DIY electronics.

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Description
Product Details

2SA844 PNP Small Signal Transistor – Versatile for Audio & Switching

The 2SA844 is a complementary PNP transistor widely used in analog audio and switching applications. With its moderate gain and stable performance, it is ideal for building preamplifiers, push-pull stages, and low-power driver circuits where a complementary pair to an NPN device is required.

Functions & Applications

Complementary to NPN Types: Perfect partner for NPN transistors in differential and push-pull configurations.
Moderate Collector Current: 150mA maximum rating suitable for small-signal and light-load switching applications.
Standard TO-92 Package: Through-hole design for easy breadboarding and prototyping on universal PCBs.
Audio-Grade Performance: Low noise characteristics make it suitable for preamplifier and microphone input stages.

Technical Specifications

Parameter	Value / Specification
Transistor Type	BJT (Bipolar Junction Transistor)
Polarity / Channel	PNP
Package / Case	TO-92
Collector-Emitter Voltage (Vceo)	55V
Max Collector Current (Ic)	150mA
Power Dissipation (Pd)	400mW
Mounting Type	Through-Hole (THT)

Frequently Asked Questions

Q: What is the complementary NPN transistor to the 2SA844?
A: The complementary NPN transistor is typically the 2SC1815 or 2SC1957, widely used in paired amplifier stages and push-pull configurations.

Q: Can the 2SA844 drive a relay or solenoid?
A: Yes, provided the load current does not exceed 150mA and sufficient base drive is supplied. Always include a protection diode (flyback diode) across inductive loads to prevent transistor damage.

Note: Price refers to one (1) piece. The component is shipped in bulk without individual packaging.

Transistor Type: BJT (Bipolar Junction Transistor)
Transistor Polarity / Channel: PNP
Transistor Case Style: TO-92

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