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Power Transistor 2SB492 PNP, 2A TO-39
The 2SB492 is a PNP germanium power transistor in a TO-39 metal can package. Built for high-current amplification and audio applications, it delivers robust performance in demanding analog circuits and requires a heatsink at maximum ratings.
2SB492 PNP Germanium Power Transistor – High-Current Amplification & Audio
The 2SB492 is a classic PNP germanium power transistor renowned for its smooth, warm characteristics in audio amplifiers and high-current switching applications. Its TO-39 metal can package ensures efficient heat dissipation, making it ideal for vintage and contemporary audio designs that demand both reliability and tonal quality.
Functions & Applications
- Germanium Construction: Prized in audio applications for its soft saturation and smooth frequency response.
- High Current Capability: Rated for up to 2A collector current, enabling direct driving of power stages.
- TO-39 Metal Can Package: Robust through-hole construction with superior thermal properties for efficient heatsinking.
- Vintage & Modern Audio: Widely used in vintage amplifiers and modern retro designs seeking authentic analog warmth.
Technical Specifications
| Parameter | Value / Specification |
|---|---|
| Transistor Type | BJT (Bipolar Junction Transistor) |
| Polarity / Channel | PNP |
| Package / Case | TO-39 |
| Max Collector Current (Ic) | 2A |
| Mounting Type | Through-Hole (THT) |
| Material | Germanium |
Frequently Asked Questions
Q: Is a heatsink required for the 2SB492?
A: Yes, when operating near its maximum ratings (2A), a suitable heatsink is essential to maintain safe junction temperature and ensure long-term reliability.
Q: What is the complementary NPN germanium transistor?
A: The complementary NPN counterpart is the 2SA492, offering matched electrical characteristics for push-pull amplifier stages.
Notes
Germanium part from the classic 2SA492/2SB492 family—prized by audio enthusiasts and restorers for vintage warmth. Requires heatsinking at full load; thermal resistance and safe operating area should be verified against application demands.
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-39