2N3055A Datasheet & Equivalents
NPN
TO-3
High Power
SPTECH
VCEO
60V
Ic Max
15A
Pd Max
115W
hFE Gain
70
Quick Reference
The 2N3055A is a NPN bipolar junction transistor in a TO-3 package, manufactured by SPTECH. It supports a breakdown voltage of 60V and continuous collector current of 15A. It is widely used in switching and amplification circuits.
Technical Specifications
| Parameter | Value | Description |
|---|---|---|
| Manufacturer | SPTECH | Original Manufacturer |
| Package | TO-3 | Physical mounting |
| Transistor Type | BJT | Bipolar Junction Transistor |
| Category | Single | Configuration |
| Collector-Emitter Voltage (VCEO) | 60V | Max breakdown voltage |
| Collector Current (Ic) | 15A | Max current handling |
| Power Dissipation (Pd) | 115W | Max thermal limit |
| DC Current Gain (hFE) | 70 | Base signal amplification ratio |
| Transition Frequency (fT) | 800kHz | Max operating frequency |
| Saturation Voltage (VCEsat) | 5V | Voltage drop when fully ON |
| Emitter-Base Voltage (Vebo) | 7V | Max emitter-base breakdown |
| Collector Cutoff Current | 700uA | Leakage current when OFF |
| Operating Temp | - | Safe junction temperature range |
Equivalent Transistors & Alternatives
| Part | Type | Package | VCEO | IC | hFE | Pd | Manufacturer / Datasheet |
|---|---|---|---|---|---|---|---|
| 2N3055 | NPN | TO-3 | 60V | 15A | 70 | 115W | SPTECH 📄 PDF |
| 2N3055 | NPN | TO-3 | 60V | 15A | 5 | 115W | JSMSEMI 📄 PDF |
| 2N3772 | NPN | TO-3 | 60V | 20A | 60 | 150W | SPTECH 📄 PDF |
| 2N5302 | NPN | TO-3 | 60V | 30A | 5 | 200W | SPTECH 📄 PDF |
| 2SD750 | NPN | TO-3 | 80V | 15A | 120 | 100W | SPTECH 📄 PDF |
| 2N5886 | NPN | TO-3 | 80V | 25A | 100 | 200W | SPTECH 📄 PDF |
| 2N5038 | NPN | TO-3 | 90V | 20A | 100 | 140W | SPTECH 📄 PDF |
| MJ802G | NPN | TO-3 | 90V | 30A | 100 | 200W | onsemi 📄 PDF |
| BD317 | NPN | TO-3 | 100V | 16A | 25 | 200W | SPTECH 📄 PDF |
| 2N6338 | NPN | TO-3 | 100V | 25A | 120 | 200W | SPTECH 📄 PDF |
| MJ15015 | NPN | TO-3 | 120V | 15A | 70 | 180W | SPTECH 📄 PDF |
| MJ15015G | NPN | TO-3 | 120V | 15A | 10 | 180W | onsemi 📄 PDF |
| MJ11016 | NPN | TO-3 | 120V | 30A | 1000 | 200W | SPTECH 📄 PDF |
| BDY58 | NPN | TO-3 | 125V | 25A | 60 | 175W | SPTECH 📄 PDF |
| 2N3773 | NPN | TO-3 | 140V | 16A | 60 | 150W | SPTECH 📄 PDF |
| 2N5631 | NPN | TO-3 | 140V | 16A | 60 | 200W | SPTECH 📄 PDF |
| MJ15003G | NPN | TO-3 | 140V | 20A | 150 | 250W | onsemi 📄 PDF |