Power Transistor AD164 PNP, TO-3

Power Transistor AD164 PNP, TO-3

Transistors

Reference: TRAD164

Part.No: AD164

€2.34

In Stock

Immediate Dispatch

The AD164 is a PNP Germanium Power Transistor in a TO-3 package, designed for high-current output stages in vintage amplifiers and industrial power supplies. Excellent thermal stability and rugged construction make it ideal for demanding heavy-duty applications.

Add to cart

Subscribe To When In Stock

You have successfully subscribed to this product

Description
Product Details

AD164 PNP Germanium Power Transistor - Heavy-Duty Output Amplification

The AD164 is a robust PNP germanium power transistor engineered for high-current applications in vintage audio amplifiers and industrial power stages. Its TO-3 metal package allows direct bolting to large external heatsinks, ensuring excellent thermal performance and reliability under continuous heavy-load operation.

Functions & Applications

Heavy-Duty Construction: Designed to handle high currents and continuous operation in demanding power amplifier output stages.
TO-3 Metal Package: Allows direct mechanical attachment to large external heatsinks for superior thermal stability.
Germanium Technology: Offers low saturation voltage and smooth, natural amplification characteristics prized in vintage audio circuits.
Collector Isolation: Metal case is electrically connected to collector; requires mica insulation when mounting to prevent short circuits.

Technical Specifications

Parameter	Value / Specification
Transistor Type	BJT (Bipolar Junction Transistor)
Polarity / Channel	PNP
Package / Case	TO-3
Mounting Type	Through-Hole (THT), Bolted to Heatsink

Frequently Asked Questions

Q: Does the AD164 require isolation when mounting on a heatsink?
A: Yes. The TO-3 metal case is electrically connected to the collector. You must use a mica insulator sheet between the transistor and the heatsink to prevent unwanted short circuits.

Q: What is the complementary NPN transistor for the AD164?
A: The AD163 is the complementary NPN germanium power transistor, often used as a matching pair in push-pull output stages.

Notes

Vintage germanium power transistor; ensure adequate heatsinking and use mica isolation. Complementary pair: AD163 (NPN).

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-3

16 other products in the same category:

Transistor BC224 PNP, 30V, 0.3A, TO-92

Transistors

Transistor BC224 PNP, 0.3A TO-92

Reference:

TRBC224

The BC224 is a general-purpose PNP Bipolar Junction Transistor (BJT) in a TO-92 package, rated for 30V and 0.3A. Suitable for small-signal amplification and low-power switching in classic and hobbyist analog circuits.

Last items in stock

Transistor BF182 NPN, UHF RF Mixer TO-72

Transistor BF182 NPN, UHF RF Mixer TO-72 2

Transistors

Transistor BF182 NPN, UHF RF Mixer TO-72

Reference:

TRBF182

The BF182 is a high-frequency NPN Bipolar Junction Transistor (BJT) in a shielded TO-72 package, optimized for UHF RF mixing and oscillator applications. Its integrated Faraday shield minimizes parasitic coupling, making it ideal for precision frequency conversion stages in radio receivers and communications equipment.

In Stock

Transistor BF506 PNP, TO-92

Transistors

Transistor BF506 PNP, TO-92

Reference:

TRBF506

The BF506 is a PNP Bipolar Junction Transistor (BJT) in a compact TO-92 plastic package, optimized for VHF/UHF RF applications. Originally designed for television tuner front-ends, mixers and local oscillators in mass-produced consumer electronics.

In Stock

Transistor 2SA721 PNP, 0.1A TO-92

Transistors

Transistor 2SA721 PNP, 0.1A TO-92

Reference:

TR2SA721

The 2SA721 is a PNP silicon epitaxial planar transistor (BJT) in a TO-92 package. Designed for low-level and general-purpose amplification thanks to its very high current gain (hFE ≥ 800).

Last items in stock

Transistor AC178K PNP Germanium

Transistors

Transistor AC178K PNP Germanium

Reference:

TRAC178K

The AC178K is a PNP Germanium audio frequency transistor. The "K" suffix denotes its built-in metal heatsink block.

In Stock

Power Transistor BD945 NPN, 10A TO-220

Transistors

Power Transistor BD945 NPN, 10A TO-220

Reference:

TRBD945

The BD945 is a high-performance NPN Power BJT in a TO-220 package. Designed for moderate to high current switching and amplification, it is ideal for audio amplifiers, PWM motor control, and general-purpose power applications in industrial and DIY electronics.

Last items in stock

Transistor AF181 PNP, UHF Germanium TO-72

Transistor AF181 PNP, UHF Germanium TO-72 2

Transistors

Transistor AF181 PNP, UHF Germanium TO-72

Reference:

TRAF181

The AF181 is a PNP Germanium BJT in a TO-72 package, purpose-built for UHF oscillators and mixers in vintage television tuners. A four-lead shielded design ensures stable gain at exceptionally high frequencies.

In Stock

Transistor BC158 PNP 25 V 100 mA 300 mW SOT-25

Transistors

Transistor BC158 PNP, 100mA SOT-25

Reference:

TRBC158

The BC158 is a general-purpose PNP Bipolar Junction Transistor (BJT) in a compact SOT-25 package. Suited for small-signal amplification and low-power switching in general electronics and DIY projects.

In Stock

Transistor 2SC1627 NPN, 0.15A TO-92

Transistors

Transistor 2SC1627 NPN, 0.15A TO-92

Reference:

TR2SC1627

The 2SC1627 is a high-voltage NPN Bipolar Junction Transistor (BJT) in a TO-92 package. Designed for signal amplification and switching in audio and power-sensitive applications requiring voltages up to 80V.

In Stock

Power Transistor 2SC2233 NPN, 4A TO-220

Transistors

Power Transistor 2SC2233 NPN, 4A TO-220

Reference:

TR2SC2233

The 2SC2233 is a high-power NPN Bipolar Junction Transistor (BJT) in a TO-220 package. Designed for amplification, motor driving and switching applications requiring robust current handling up to 4A.

Last items in stock

Transistor BC171 NPN 45 V 100 mA 300 mW TO-92

Transistors

Transistor BC171 NPN, 0.1A TO-92

Reference:

TRBC171

The BC171 is an NPN Bipolar Junction Transistor (BJT) in a TO-92 package, rated for 45V / 100mA. A classic small-signal part suited to audio amplification and general-purpose switching in hobby and repair projects.

Last items in stock

Transistor BD136 PNP, 45V, 1.5A, 12W, TO-126

Transistors

Power Transistor BD136 PNP, 1.5A TO-126

Reference:

TRBD136

The BD136 is a PNP Bipolar Junction Transistor (BJT) in a TO-126 power package, rated for 1.5A collector current. Commonly used in audio amplifier output stages, motor drivers and general-purpose power switching circuits.

Last items in stock

Transistor 2SA844 PNP, 0.15A TO-92

Transistors

Transistor 2SA844 PNP, 0.15A TO-92

Reference:

TR2SA844

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.

Last items in stock

Transistor BC208 NPN Silicon

Transistors

Transistor BC208 NPN Silicon

Reference:

TRBC208

The BC208 is a classic NPN Silicon general-purpose transistor in a plastic TO-106 package.

In Stock

Power Transistor AD149 PNP, TO-3

Transistors

Power Transistor AD149 PNP, TO-3

Reference:

TRAD149

The AD149 is a classic PNP Germanium Power Transistor in a TO-3 package. Designed for high-current amplification and audio power amplifier output stages where reliability and thermal management are critical.

In Stock

Transistor 2SC634 NPN, 0.2A TO-92

Transistors

Transistor 2SC634 NPN, 0.2A TO-92

Reference:

TR2SC634

The 2SC634 is a general-purpose NPN Bipolar Junction Transistor (BJT) in a TO-92 package. Designed for reliable switching and amplification in hobby electronics, educational projects, and small signal circuits.

In Stock

Product added to wishlist

Product added to compare.