Transistor AF369 PNP, Germanium TO-72

Transistor AF369 PNP, Germanium TO-72

Transistor AF369 PNP, Germanium TO-72

Transistor AF369 PNP, Germanium TO-72

Transistor AF369 PNP, Germanium TO-72

Transistors

Reference: TRAF369

Part.No: AF369

€1.75

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The AF369 is a vintage PNP germanium transistor in a TO-72 package, purpose-built for VHF/UHF RF amplification, mixing and oscillation in professional radio and television receivers. The integrated shield can provides excellent electromagnetic isolation for demanding RF circuits.

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Description
Product Details

AF369 Germanium RF Transistor – VHF/UHF Amplification & Oscillation

The AF369 is a classic PNP germanium transistor engineered for high-frequency RF circuits in the VHF and UHF bands. With its integrated electromagnetic shield (4th lead) and optimized low-noise characteristics, it excels in tuner stages, mixers and oscillator circuits found in vintage and professional radio/TV equipment.

Functions & Applications

VHF/UHF Performance: Optimized for demanding RF applications in the very high and ultra-high frequency bands.
Integrated Shield Can: 4-lead package with electromagnetic shielding to minimize coupling and interference in sensitive circuits.
Low-Noise Germanium: Inherent low-noise characteristics ideal for preamplification stages and sensitive RF detection.
Versatile RF Functionality: Suitable for tuners, mixers, oscillators and broadband amplification.

Technical Specifications

Parameter	Value / Specification
Transistor Type	BJT (Bipolar Junction Transistor)
Polarity / Channel	PNP
Package / Case	TO-72
Transistor Type	PNP Germanium BJT
Package Type	TO-72 (4-lead shield can)
Primary Application Band	VHF/UHF (RF circuits)

Frequently Asked Questions

Q: Can the AF369 be used in modern circuits, or is it only for vintage equipment?
A: While originally designed for vintage radio/TV, the AF369 can still be used in modern RF projects requiring low-noise germanium characteristics. However, silicon alternatives are often preferred for room-temperature stability and availability.

Q: What is the purpose of the 4th lead (shield can)?
A: The 4th lead connects to a Faraday shield around the transistor die. This electromagnetic shield minimizes capacitive coupling between the input and output, essential for stable, low-interference RF amplification at VHF/UHF frequencies.

Notes

Vintage germanium part with NOS (New Old Stock) available. Requires careful temperature management and protection from reverse-bias due to germanium's lower breakdown voltage. Recommended for RF enthusiasts and radio restoration projects.

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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