Transistor AF201 PNP, Germanium TO-72

Transistor AF201 PNP, Germanium TO-72

Transistor AF201 PNP, Germanium TO-72

Transistor AF201 PNP, Germanium TO-72

Transistor AF201 PNP, Germanium TO-72

Transistors

Reference: TRAF201

Part.No: AF201

€1.20

In Stock

Immediate Dispatch

The AF201 is a vintage PNP Germanium BJT in a TO-72 package with a shielded 4th lead. Originally designed for VHF/UHF RF amplification in radio and television tuners, the AF201 delivers low-noise performance in high-frequency applications.

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Description
Product Details

AF201 Vintage Germanium PNP Transistor – Low-Noise VHF/UHF RF Amplifier

The AF201 is a rare, NOS germanium transistor prized by vintage radio enthusiasts and RF engineers. With its shielded 4-lead TO-72 package and inherently low noise characteristics, it remains an excellent choice for precision RF amplification stages, restoration projects, and experimental VHF/UHF circuits.

Functions & Applications

Low Noise Performance: Germanium junction inherently produces minimal noise, ideal for sensitive RF preamplifiers.
Shielded 4-Lead Package: The extra shielding lead reduces parasitic coupling and oscillation in high-frequency circuits.
Vintage NOS Stock: Original, never-soldered units from classic RF design era, highly sought by restorers.
VHF/UHF Optimized: Proven performance in television and radio tuner stages up to UHF frequencies.

Technical Specifications

Parameter	Value / Specification
Transistor Type	BJT (Bipolar Junction Transistor)
Polarity / Channel	PNP
Package / Case	TO-72
Transistor Family	Germanium PNP BJT
Package Type	TO-72 (4-Lead, Shielded)
Mounting Type	Through-Hole (THT)

Frequently Asked Questions

Q: Is the AF201 suitable for modern breadboard circuits?
A: Yes, but with care. The TO-72 package fits standard breadboards. However, germanium transistors require reverse bias (hole) at the base and are more temperature-sensitive than silicon; keep the operating point stable.

Q: Why must I solder AF201 quickly?
A: Germanium junctions are highly heat-sensitive. Solder in 2–3 seconds maximum, or use needle-nose tweezers as a heatsink on the leads to protect the junction from thermal damage.

Notes

NOS (Never Out of Stock) vintage germanium transistor. Heat-sensitive during soldering and requires reverse-bias biasing. Store in an anti-static environment.

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-72

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