2SC2581 Datasheet & Equivalents
NPN
TO-3P
High Power
SPTECH
VCEO
140V
Ic Max
10A
Pd Max
100W
hFE Gain
30
Quick Reference
The 2SC2581 is a NPN bipolar junction transistor in a TO-3P package, manufactured by SPTECH. It supports a breakdown voltage of 140V and continuous collector current of 10A. It is widely used in switching and amplification circuits.
Technical Specifications
| Parameter | Value | Description |
|---|---|---|
| Manufacturer | SPTECH | Original Manufacturer |
| Package | TO-3P | Physical mounting |
| Transistor Type | BJT | Bipolar Junction Transistor |
| Category | Single | Configuration |
| Collector-Emitter Voltage (VCEO) | 140V | Max breakdown voltage |
| Collector Current (Ic) | 10A | Max current handling |
| Power Dissipation (Pd) | 100W | Max thermal limit |
| DC Current Gain (hFE) | 30 | Base signal amplification ratio |
| Transition Frequency (fT) | 20MHz | Max operating frequency |
| Saturation Voltage (VCEsat) | 2V | Voltage drop when fully ON |
| Emitter-Base Voltage (Vebo) | 6V | Max emitter-base breakdown |
| Collector Cutoff Current | 100uA | Leakage current when OFF |
| Operating Temp | - | Safe junction temperature range |
Equivalent Transistors & Alternatives
| Part | Type | Package | VCEO | IC | hFE | Pd | Manufacturer / Datasheet |
|---|---|---|---|---|---|---|---|
| 2SC5198 | NPN | TO-3P | 140V | 10A | 55 | 100W | Minos 📄 PDF |
| 2SC5198-O(S1 | NPN | TO-3P | 140V | 10A | 55 | 100W | TOSHIBA 📄 PDF |
| E | NPN | TO-3P | 140V | 10A | 180 | 100W | SPTECH 📄 PDF |
| S) | NPN | TO-3P | 140V | 12A | 200 | 100W | SPTECH 📄 PDF |
| 2SC4468 | NPN | TO-3P | 140V | 12A | 320 | 120W | SPTECH 📄 PDF |
| 2SD1047 | NPN | TO-3P | 150V | 10A | 180 | 100W | SPTECH 📄 PDF |
| 2SC2987 | NPN | TO-3P | 160V | 15A | 180 | 130W | SPTECH 📄 PDF |
| 2SC2837 | NPN | TO-3P | 180V | 12A | 180 | 130W | SPTECH 📄 PDF |
| 2SC3519 | NPN | TO-3P | 180V | 15A | 180 | 130W | SPTECH 📄 PDF |
| 2SC3907 | NPN | TO-3P | 200V | 15A | 180 | 160W | SPTECH 📄 PDF |
| 2SC3856 | NPN | TO-3P | 230V | 15A | 55 | 150W | TOSHIBA 📄 PDF |
| 2SC6011 | NPN | TO-3P | 230V | 15A | 80 | 150W | TOSHIBA 📄 PDF |
| 2SC5200-O(Q) | NPN | TO-3P | 230V | 15A | 80 | 150W | Minos 📄 PDF |
| TTC5200(Q) | NPN | TO-3P | 230V | 15A | 160 | 150W | OSEN 📄 PDF |
| NJW0281G | NPN | TO-3P | 230V | 15A | 160 | 150W | SPTECH 📄 PDF |
| 2SA1943N-OSEN | NPN | TO-3P | 230V | 15A | 160 | 150W | OSEN 📄 PDF |
| 2SC4029 | NPN | TO-3P | 230V | 15A | 160 | 150W | UTC 📄 PDF |
| 2SC5200 | NPN | TO-3P | 230V | 15A | 160 | 150W | OSEN 📄 PDF |
| 2SC5200L-R-B-T3L-T | NPN | TO-3P | 230V | 15A | 160 | 150W | OSEN 📄 PDF |
| 2SC5200N-OSEN | NPN | TO-3P | 230V | 15A | 160 | 150W | Wild Goose 📄 PDF |