Power Transistor AD161 NPN, 10A TO-66

Power Transistor AD161 NPN, 10A TO-66

Transistors

Reference: TRAD161

Part.No: AD161

€2.35

In Stock

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The AD161 is a classic NPN germanium power transistor in a TO-66 package. Renowned for push-pull audio amplifier stages and vintage audio applications where warm, natural tone is prized.

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Description
Product Details

AD161 Germanium Power Transistor - Classic Push-Pull Audio Stage

The AD161 is a legendary NPN germanium transistor, almost universally paired with the complementary PNP AD162 in push-pull output stages. Its low saturation voltage and warm audio characteristics make it the preferred choice for vintage and modern tube-inspired amplifier designs.

Functions & Applications

Complementary Pair Design: Purpose-built to work with AD162 (PNP) for balanced push-pull amplification.
Germanium Construction: Delivers the signature warm, low-distortion tone prized in vintage audio.
TO-66 Package: Robust metal case with good thermal contact; smaller than TO-3 but still excellent heat dissipation.
High Current Capability: Capable of driving demanding loudspeaker loads in audio output stages.

Technical Specifications

Parameter	Value / Specification
Transistor Type	BJT (Bipolar Junction Transistor)
Polarity / Channel	NPN
Package / Case	TO-66
Collector-Emitter Voltage (Vceo)	80V
Max Collector Current (Ic)	10A
Power Dissipation (Pd)	30W
Mounting Type	Through-Hole (THT)

Frequently Asked Questions

Q: What is the complementary PNP part for AD161?
A: The AD162 is the complementary PNP transistor, designed as a perfect match for push-pull output stages.

Q: Do I need a mica insulator when mounting on a heatsink?
A: Yes. The TO-66 case is electrically connected to the Collector, so electrical isolation (mica insulator + thermal grease) is required to prevent short circuits.

Notes

Vintage germanium transistor; NOS stock may vary. Requires heatsink and mica insulation for TO-66 mounting. Gate voltage (Vbe) is typically 0.3V (germanium characteristic), lower than silicon types.

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: NPN
Transistor Case Style: TO-66

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