2SC681 Datasheet & Equivalents
NPN
TO-3
High Power
SPTECH
VCEO
70V
Ic Max
6A
Pd Max
50W
hFE Gain
-
Quick Reference
The 2SC681 is a NPN bipolar junction transistor in a TO-3 package, manufactured by SPTECH. It supports a breakdown voltage of 70V and continuous collector current of 6A. 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) | 70V | Max breakdown voltage |
| Collector Current (Ic) | 6A | Max current handling |
| Power Dissipation (Pd) | 50W | Max thermal limit |
| DC Current Gain (hFE) | - | Base signal amplification ratio |
| Transition Frequency (fT) | - | Max operating frequency |
| Saturation Voltage (VCEsat) | 2V | Voltage drop when fully ON |
| Emitter-Base Voltage (Vebo) | 5V | Max emitter-base breakdown |
| Collector Cutoff Current | 1mA | Leakage current when OFF |
| Operating Temp | - | Safe junction temperature range |
Equivalent Transistors & Alternatives
| Part | Type | Package | VCEO | IC | hFE | Pd | Manufacturer / Datasheet |
|---|---|---|---|---|---|---|---|
| 2SC1777 | NPN | TO-3 | 70V | 6A | 150 | 50W | SPTECH 📄 PDF |
| MJ3001 | NPN | TO-3 | 80V | 10A | - | 150W | SPTECH 📄 PDF |
| 2SD750 | NPN | TO-3 | 80V | 15A | 120 | 100W | SPTECH 📄 PDF |
| 2SC1116 | NPN | TO-3 | 120V | 10A | 50 | 100W | SPTECH 📄 PDF |
| MJ15015G | NPN | TO-3 | 120V | 15A | 10 | 180W | onsemi 📄 PDF |
| MJ15015 | NPN | TO-3 | 120V | 15A | 70 | 180W | SPTECH 📄 PDF |