Transistor ACY20 PNP, Medium Power Germanium TO-5

Transistor ACY20 PNP, Medium Power Germanium TO-5

Transistors

Reference: TRACY20

Part.No: ACY20

€1.95

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The ACY20 is a PNP Germanium Bipolar Junction Transistor (BJT) in a TO-5 metal package. A vintage medium-power switching transistor ideal for restoration of classic electronic equipment and relay driver applications.

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Description
Product Details

ACY20 PNP Germanium Transistor - Vintage Medium-Power Switching

The ACY20 is a PNP germanium transistor housed in a robust TO-5 metal case, representing a key component in mid-20th-century electronics. Its medium power capability and reliable switching characteristics make it essential for restoring vintage audio amplifiers, vintage radio equipment, and relay-driven circuits where original parts are required.

Functions & Applications

Vintage Germanium Technology: Authentic replacement for period audio and RF equipment restoration.
PNP Polarity: Compatible with positive-ground and single-supply circuits common in vintage designs.
Medium Power Rating: Capable of driving relays, transformers and moderate loads.
TO-5 Metal Package: Durable through-hole construction with excellent thermal stability.

Technical Specifications

Parameter	Value / Specification
Transistor Type	BJT (Bipolar Junction Transistor)
Polarity / Channel	PNP
Package / Case	TO-5
Transistor Type	PNP Germanium BJT
Package	TO-5 (Metal, 3-pin)
Mounting Type	Through-Hole (THT)

Frequently Asked Questions

Q: Is the ACY20 suitable for positive-ground vintage circuits?
A: Yes. The ACY20's PNP polarity is well-suited to positive-ground designs common in vintage equipment. Always verify your circuit schematic before installation to confirm correct polarity.

Q: Can the ACY20 replace modern silicon transistors in my restoration project?
A: Not directly. Germanium and silicon transistors have different voltage drops (Vbe) and temperature coefficients. Use the ACY20 only where an original germanium PNP is specified, as substitution can alter circuit behaviour.

Notes

Vintage NOS (New Old Stock) germanium transistor. May exhibit slightly higher leakage current at room temperature compared to modern silicon parts; this is normal for germanium. Ideal for authentic restoration of vintage audio equipment, radio receivers, and mid-20th century electronic circuits.

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-5

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