2N3055
Single Bipolar Transistors Manufacturer:
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2N3055
276-2N3055
Explore the 2N3055 NPN transistor: features, datasheet, specs, applications, and sourcing options. Obsolete but widely used in power electronics.
2N3055 Description
2N3055 NPN Power Transistor Overview
The 2N3055 is a widely recognized NPN power transistor originally developed for audio amplification and power switching applications. Although it is now classified as obsolete, it is still extensively used in legacy designs and hobbyist circuits due to its robustness and high power handling capability.
✅ Datasheet
Download 2N3055 Datasheet (PDF)
✅ Features
- NPN Silicon Power Transistor
- High collector current: up to 15 A
- Collector-emitter breakdown voltage: 60 V
- Maximum power dissipation: 115 W
- Package: TO-3 (Metal Can)
- Obsolete status - check availability with authorized distributors
✅ Technical Specifications
| Attribute | Value |
|---|---|
| Manufacturer | STMicroelectronics |
| Part Status | Obsolete |
| Transistor Type | NPN |
| Collector Current (Ic) | 15 A |
| Collector-Emitter Breakdown Voltage | 60 V |
| Vce Saturation (Max) | 3V @ 3.3A, 10A |
| Collector Cutoff Current | 700µA |
| DC Gain (hFE) | 20 @ 4A, 4V |
| Power Dissipation | 115 W |
| Operating Temperature | 200°C (TJ) |
| Mounting Type | Chassis Mount |
| Package / Case | TO-204AA, TO-3 |
| Supplier Device Package | TO-3 |
✅ Applications
- Power amplifiers
- Voltage regulators
- Switching regulators
- Audio amplifier designs
- Hobbyist and educational electronics
🛒 Buy 2N3055 or Find Alternatives
Looking for 2N3055 or equivalent parts? Contact Onzuu, your trusted electronic component distributor. We offer sourcing, BOM services, and global delivery.
✅ Onzuu Authorized Distributor
Onzuu is a reliable distributor of discontinued and hard-to-find components like the 2N3055. Visit Onzuu.com to check availability, get quotes, and ensure genuine sourcing with global shipping support.
✅ FAQ
- Q1: Is the 2N3055 still in production?
- No, it is marked as obsolete by major manufacturers. Alternative replacements are available.
- Q2: Can I use 2N3055 for audio applications?
- Yes, it is historically popular for audio amplifier projects.
- Q3: What is the difference between TO-3 and TO-220?
- TO-3 is a metal can package suitable for higher power dissipation, while TO-220 is a smaller plastic package with lower dissipation limits.
✅ Summary
The 2N3055 NPN power transistor remains a classic component in electronics, known for its durability and high current handling. While it is no longer in production, it still finds life in educational setups, vintage equipment repair, and DIY electronics. Make sure to source it from trustworthy distributors like Onzuu to avoid counterfeits.
Technical specifications
| Operating Temperature | 200°C (TJ) | |
| Frequency - Transition | - | |
| Current - Collector (Ic) (Max) | 15 A | |
| Vce Saturation (Max) @ Ib, Ic | 3V @ 3.3A, 10A | |
| ECCN | EAR99 | |
| Mounting Type | Chassis Mount | |
| Product Status | Obsolete | |
| Voltage - Collector Emitter Breakdown (Max) | 60 V | |
| Supplier Device Package | TO-3 | |
| Series | - | |
| Transistor Type | NPN | |
| Package / Case | TO-204AA, TO-3 | |
| Power - Max | 115 W | |
| REACH Status | REACH Unaffected | |
| Mfr | STMicroelectronics | |
| Current - Collector Cutoff (Max) | 700µA | |
| HTSUS | 8541.29.0095 | |
| Package | Tray | |
| RoHS Status | ROHS3 Compliant | |
| DC Current Gain (hFE) (Min) @ Ic, Vce | 20 @ 4A, 4V | |
| Base Product Number | 2N30 | |
| Moisture Sensitivity Level (MSL) | 1 (Unlimited) |
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