2SA812 Datasheet & Equivalents
PNP
SOT-23
General Purpose
R+O
VCEO
50V
Ic Max
100mA
Pd Max
200mW
hFE Gain
90
Quick Reference
The 2SA812 is a PNP bipolar junction transistor in a SOT-23 package, manufactured by R+O. It supports a breakdown voltage of 50V and continuous collector current of 100mA. It is widely used in switching and amplification circuits.
Technical Specifications
| Parameter | Value | Description |
|---|---|---|
| Manufacturer | R+O | Original Manufacturer |
| Package | SOT-23 | Physical mounting |
| Transistor Type | BJT | Bipolar Junction Transistor |
| Category | Single | Configuration |
| Collector-Emitter Voltage (VCEO) | 50V | Max breakdown voltage |
| Collector Current (Ic) | 100mA | Max current handling |
| Power Dissipation (Pd) | 200mW | Max thermal limit |
| DC Current Gain (hFE) | 90 | Base signal amplification ratio |
| Transition Frequency (fT) | 180MHz | Max operating frequency |
| Saturation Voltage (VCEsat) | 300mV | Voltage drop when fully ON |
| Emitter-Base Voltage (Vebo) | 5V | Max emitter-base breakdown |
| Collector Cutoff Current | 100nA | Leakage current when OFF |
| Operating Temp | -55℃~+150℃ | Safe junction temperature range |
Equivalent Transistors & Alternatives
| Part | Type | Package | VCEO | IC | hFE | Pd | Manufacturer / Datasheet |
|---|---|---|---|---|---|---|---|
| 2SA812(RANGE:300-400) | PNP | SOT-23 | 50V | 100mA | 90 | 200mW | JSCJ 📄 PDF |
| 2SA1162Y | PNP | SOT-23 | 50V | 150mA | 70 | 150mW | JSCJ 📄 PDF |
| KTA1504S-Y-RTK/P | PNP | SOT-23 | 50V | 150mA | 70 | 150mW | KEC 📄 PDF |
| 2SA1037AKT146R | PNP | SOT-23 | 50V | 150mA | 120 | 200mW | ROHM 📄 PDF |
| 2SA1037AKT146S | PNP | SOT-23 | 50V | 150mA | 120 | 200mW | ROHM 📄 PDF |
| A1015 | PNP | SOT-23 | 50V | 150mA | 120 | 200mW | BORN 📄 PDF |
| A733 | PNP | SOT-23 | 50V | 150mA | 120 | 200mW | BORN 📄 PDF |
| A1015 | PNP | SOT-23 | 50V | 150mA | 130 | 200mW | Shikues 📄 PDF |
| A1015(RANGE:200-400) | PNP | SOT-23 | 50V | 150mA | 200 | 200mW | JSCJ 📄 PDF |
| L2SA812SLT1G | PNP | SOT-23 | 50V | 150mA | 270 | 200mW | LRC 📄 PDF |
| 2SA1162-6AF | PNP | SOT-23 | 50V | 150mA | 400 | 150mW | FOSAN 📄 PDF |
| 2SA1015 | PNP | SOT-23 | 50V | 150mA | 400 | 200mW | MSKSEMI 📄 PDF |
| 2SA1015 | PNP | SOT-23 | 50V | 150mA | 400 | 200mW | Guangdong Hot... 📄 PDF |
| A1015 | PNP | SOT-23 | 50V | 150mA | 400 | 200mW | XCH 📄 PDF |
| A1015 | PNP | SOT-23 | 50V | 150mA | 400 | 200mW | GOODWORK 📄 PDF |
| 2SA1037-6AF | PNP | SOT-23 | 50V | 150mA | 560 | 200mW | FOSAN 📄 PDF |
| H2SA1037AKT146R | PNP | SOT-23 | 50V | 150mA | 560 | 400mW | HXY MOSFET 📄 PDF |
| KA1980SCG | PNP | SOT-23 | 50V | 150mA | 700 | 350mW | Kodenshi AUK 📄 PDF |
| BC856ALT1G | PNP | SOT-23 | 65V | 100mA | 90 | 225mW | onsemi 📄 PDF |
| BC856BLT1G | PNP | SOT-23 | 65V | 100mA | 90 | 225mW | onsemi 📄 PDF |