BC557B Transistor Datasheet & Specifications
PNP
TO-92
General Purpose
LGE
VCEO
45V
Ic Max
100mA
Pd Max
625mW
hFE Gain
180
Quick Reference
The BC557B is a PNP bipolar transistor in a TO-92 package by LGE. This datasheet provides complete specifications including 45V breakdown voltage and 100mA continuous collector current. Download the BC557B datasheet PDF above for detailed pinout diagrams and application circuits.
Technical Specifications
| Parameter | Value | Description |
|---|---|---|
| Manufacturer | LGE | Original Manufacturer |
| Package | TO-92 | Physical mounting |
| Transistor Type | BJT | Bipolar Junction Transistor |
| VCEO | 45V | Breakdown voltage |
| Ic | 100mA | Collector current |
| Pd | 625mW | Power dissipation |
| DC Current Gain | 180 | hFE / Beta |
| Frequency | 150MHz | Transition speed (fT) |
| VCEsat | 650mV | Saturation voltage |
| Vebo | 5V | Emitter-Base voltage |
| Cutoff Current | 100nA | Leakage (ICBO) |
| Temp | - | Operating temp |
Equivalent Transistors & Alternatives
| Part | Type | Package | VCEO | Ic | Pd |
|---|---|---|---|---|---|
| ZTX551 | PNP | TO-92 | 60V | 1A | 1W |
| 2SA1015(RANGE:200-400) | PNP | TO-92 | 50V | 150mA | 400mW |
| 2SB1116AG-G-T92-B | PNP | TO-92 | 60V | 1A | 750mW |
| MPSA92-TA | PNP | TO-92 | 305V | 200mA | 625mW |
| BC327-40BK | PNP | TO-92 | 45V | 800mA | 625mW |
| ZTX792ASTZ | PNP | TO-92 | 70V | 2A | 1W |
| ZTX957 | PNP | TO-92 | 300V | 1A | 1.2W |
| BC640 | PNP | TO-92 | 80V | 1A | 830mW |
| ZTX558STZ | PNP | TO-92 | 400V | 200mA | 1W |
| BC640 | PNP | TO-92 | 80V | 1A | 830mW |