2SC4081-R Datasheet & Equivalents
NPN
SOT-323
General Purpose
TECH PUBLIC
VCEO
50V
Ic Max
150mA
Pd Max
200mW
hFE Gain
390
Quick Reference
The 2SC4081-R is a NPN bipolar junction transistor in a SOT-323 package, manufactured by TECH PUBLIC. It supports a breakdown voltage of 50V and continuous collector current of 150mA. It is widely used in switching and amplification circuits.
Technical Specifications
| Parameter | Value | Description |
|---|---|---|
| Manufacturer | TECH PUBLIC | Original Manufacturer |
| Package | SOT-323 | Physical mounting |
| Transistor Type | BJT | Bipolar Junction Transistor |
| Category | Single | Configuration |
| Collector-Emitter Voltage (VCEO) | 50V | Max breakdown voltage |
| Collector Current (Ic) | 150mA | Max current handling |
| Power Dissipation (Pd) | 200mW | Max thermal limit |
| DC Current Gain (hFE) | 390 | Base signal amplification ratio |
| Transition Frequency (fT) | 180MHz | Max operating frequency |
| Saturation Voltage (VCEsat) | 400mV | Voltage drop when fully ON |
| Emitter-Base Voltage (Vebo) | 7V | Max emitter-base breakdown |
| Collector Cutoff Current | 100nA | Leakage current when OFF |
| Operating Temp | - | Safe junction temperature range |
Equivalent Transistors & Alternatives
| Part | Type | Package | VCEO | IC | hFE | Pd | Manufacturer / Datasheet |
|---|---|---|---|---|---|---|---|
| 2SC4081R | NPN | SOT-323 | 50V | 150mA | 390 | 200mW | Shikues 📄 PDF |
| 2SC4081WGR | NPN | SOT-323 | 50V | 150mA | 560 | 150mW | Jingdao Micro... 📄 PDF |
| 2PC4081R | NPN | SOT-323 | 50V | 150mA | 180 | 200mW | Nexperia 📄 PDF |
| 115 | NPN | SOT-323 | 50V | 150mA | 180 | 200mW | ROHM 📄 PDF |
| 2SC4081UBTLR | NPN | SOT-323 | 50V | 150mA | 120 | 200mW | ROHM 📄 PDF |
| 2SC4081T106R | NPN | SOT-323 | 50V | 150mA | 120 | 200mW | ROHM 📄 PDF |
| 2SC4081T106S | NPN | SOT-323 | 50V | 150mA | 120 | 200mW | ROHM 📄 PDF |
| 2SC4081U3HZGT106Q | NPN | SOT-323 | 50V | 150mA | 700 | 100mW | KEC 📄 PDF |
| KTC4075-Y-RTK/P | NPN | SOT-323 | 50V | 150mA | 70 | 100mW | TOSHIBA 📄 PDF |
| 2SC4116-GR | NPN | SOT-323 | 50V | 150mA | 70 | 200mW | TOSHIBA 📄 PDF |
| LF | NPN | SOT-323 | 50V | 150mA | 70 | 100mW | JSCJ 📄 PDF |
| 2SC4116-Y | NPN | SOT-323 | 50V | 150mA | 820 | 200mW | ROHM 📄 PDF |