SS8550 Datasheet & Equivalents
PNP
SOT-23
General Purpose
FOSAN
VCEO
20V
Ic Max
1.5A
Pd Max
300mW
hFE Gain
400
Quick Reference
The SS8550 is a PNP bipolar junction transistor in a SOT-23 package, manufactured by FOSAN. It supports a breakdown voltage of 20V and continuous collector current of 1.5A. It is widely used in switching and amplification circuits.
Technical Specifications
| Parameter | Value | Description |
|---|---|---|
| Manufacturer | FOSAN | Original Manufacturer |
| Package | SOT-23 | Physical mounting |
| Transistor Type | BJT | Bipolar Junction Transistor |
| Category | Single | Configuration |
| Collector-Emitter Voltage (VCEO) | 20V | Max breakdown voltage |
| Collector Current (Ic) | 1.5A | Max current handling |
| Power Dissipation (Pd) | 300mW | Max thermal limit |
| DC Current Gain (hFE) | 400 | Base signal amplification ratio |
| Transition Frequency (fT) | 120MHz | Max operating frequency |
| Saturation Voltage (VCEsat) | 600mV | Voltage drop when fully ON |
| Emitter-Base Voltage (Vebo) | 5V | 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 |
|---|---|---|---|---|---|---|---|
| HFMMT718TC | PNP | SOT-23 | 20V | 1.5A | 300 | 350mW | HXY MOSFET 📄 PDF |
| FMMT718 | PNP | SOT-23 | 20V | 1.5A | 600 | 350mW | HXY MOSFET 📄 PDF |
| FMMT718 | PNP | SOT-23 | 20V | 1.5A | 600 | 350mW | MSKSEMI 📄 PDF |
| FMMT718TA | PNP | SOT-23 | 20V | 1.5A | 150 | 625mW | DIODES 📄 PDF |
| FMMT718TC | PNP | SOT-23 | 20V | 1.5A | 150 | 625mW | DIODES 📄 PDF |
| FMMT718 | PNP | SOT-23 | 20V | 1.5A | 150 | 625mW | DIODES 📄 PDF |
| PBSS5320T | PNP | SOT-23 | 20V | 2A | 450 | 1.2W | BLUE ROCKET 📄 PDF |
| DSS5220TQ-7 | PNP | SOT-23 | 20V | 2A | 225 | 600mW | DIODES 📄 PDF |
| DSS5220T-13 | PNP | SOT-23 | 20V | 2A | 200 | 1.2W | DIODES 📄 PDF |
| DSS5320T-7 | PNP | SOT-23 | 20V | 2A | 200 | 600mW | DIODES 📄 PDF |
| PBSS5220T | PNP | SOT-23 | 20V | 2A | 200 | 480mW | Nexperia 📄 PDF |
| 215 | PNP | SOT-23 | 20V | 2A | 200 | 540mW | Nexperia 📄 PDF |
| PBSS5320T | PNP | SOT-23 | 20V | 2A | 180 | 350mW | JSCJ 📄 PDF |
| 215 | PNP | SOT-23 | 20V | 2.5A | 200 | 625mW | TOSHIBA 📄 PDF |
| 2SA1585(RANGE:180-390) | PNP | SOT-23 | 25V | 1.5A | 400 | 200mW | TDSEMIC 📄 PDF |
| 2SA2061(TE85L | PNP | SOT-23 | 25V | 1.5A | 400 | 300mW | FOSAN 📄 PDF |
| F) | PNP | SOT-23 | 25V | 1.5A | 400 | 200mW | TDSEMIC 📄 PDF |
| SS8550 Y2 0.52 | PNP | SOT-23 | 25V | 1.5A | 350 | 300mW | HXY MOSFET 📄 PDF |
| SS8550-6AF | PNP | SOT-23 | 25V | 1.5A | 350 | 300mW | HXY MOSFET 📄 PDF |
| SS8550 Y2 | PNP | SOT-23 | 25V | 1.5A | 320 | 350mW | YFW 📄 PDF |