FZT955 Datasheet & Equivalents
PNP
SOT-223
High Power
ALJ
VCEO
140V
Ic Max
4A
Pd Max
3W
hFE Gain
300
Quick Reference
The FZT955 is a PNP bipolar junction transistor in a SOT-223 package, manufactured by ALJ. It supports a breakdown voltage of 140V and continuous collector current of 4A. It is widely used in switching and amplification circuits.
Technical Specifications
| Parameter | Value | Description |
|---|---|---|
| Manufacturer | ALJ | Original Manufacturer |
| Package | SOT-223 | Physical mounting |
| Transistor Type | BJT | Bipolar Junction Transistor |
| Category | Single | Configuration |
| Collector-Emitter Voltage (VCEO) | 140V | Max breakdown voltage |
| Collector Current (Ic) | 4A | Max current handling |
| Power Dissipation (Pd) | 3W | Max thermal limit |
| DC Current Gain (hFE) | 300 | Base signal amplification ratio |
| Transition Frequency (fT) | 110MHz | Max operating frequency |
| Saturation Voltage (VCEsat) | - | Voltage drop when fully ON |
| Emitter-Base Voltage (Vebo) | - | Max emitter-base breakdown |
| Collector Cutoff Current | 1uA | Leakage current when OFF |
| Operating Temp | -55℃~+150℃ | Safe junction temperature range |
Equivalent Transistors & Alternatives
| Part | Type | Package | VCEO | IC | hFE | Pd | Manufacturer / Datasheet |
|---|---|---|---|---|---|---|---|
| FZT955(RANGE:100-300) | PNP | SOT-223 | 140V | 4A | 300 | 800mW | JSCJ 📄 PDF |
| FZT955-MS | PNP | SOT-223 | 140V | 4A | 300 | 3W | MSKSEMI 📄 PDF |
| ZX5T955GTA | PNP | SOT-223 | 140V | 4A | 100 | 3W | DIODES 📄 PDF |
| ZXTP2014GTA | PNP | SOT-223 | 140V | 4A | 100 | 3W | DIODES 📄 PDF |
| FZT955TA | PNP | SOT-223 | 140V | 4A | 75 | 3W | DIODES 📄 PDF |
| WT955 | PNP | SOT-223 | 170V | 4A | - | 3W | Wayon 📄 PDF |