Transistor AF118 PNP Germanium, TO-7

Transistor AF118 PNP Germanium, TO-7

Transistors

Reference: TRAF118

Part.No: AF118

€1.40

In Stock

Immediate Dispatch

The AF118 is a vintage PNP Germanium Transistor in a TO-7 package with a shielded metal case and Faraday shield lead. Originally designed for high-voltage video output stages in early CRT television driver circuits.

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Description
Product Details

AF118 Vintage PNP Germanium Transistor - High Voltage Video Output Driver

The AF118 is a rare vintage PNP germanium transistor engineered for high-voltage applications in television receiver circuits. Its shielded TO-7 package with dedicated Faraday shield lead makes it ideal for restoring classic CRT displays and vintage audio/video equipment where interference rejection and voltage headroom are critical.

Functions & Applications

High Voltage Rating: Designed specifically for high-voltage output driver stages, making it suitable for CRT video circuits.
Shielded Package: The TO-7 metal case with separate Faraday shield lead reduces RF interference and coupling noise.
Vintage Germanium Construction: Germanium junction characteristics deliver smooth, non-linear amplification favored in classic audio and video applications.
Rare & Collectible: Original vintage part, increasingly difficult to source for authentic restoration projects.

Technical Specifications

Parameter	Value / Specification
Transistor Type	BJT (Bipolar Junction Transistor)
Polarity / Channel	PNP
Package / Case	TO-7
Collector-Emitter Voltage (Vceo)	High voltage rated
Package Style	TO-7 Metal Can with Shield Lead
Material	Germanium

Frequently Asked Questions

Q: Is the AF118 suitable for a standard radio circuit?
A: While it will function in low-voltage radio circuits, the AF118 was specifically engineered for high-voltage video output stages. Its rarity and cost make it better reserved for authentic CRT television restoration projects.

Q: What does the 4th shield lead do?
A: The fourth lead is a Faraday shield that connects to the metal case, providing RF shielding and reducing coupling noise from external interference—critical in high-voltage video driver circuits.

Notes

Vintage NOS/used germanium transistor. Genuine vintage stock with original packaging/markings. Characterized by typical germanium leakage current (Icbo) and lower noise floor typical of germanium junctions. Requires appropriate biasing for vintage circuitry; not a direct substitute for modern silicon equivalents.

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-7

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