FCX491ATA Datasheet & Equivalents
NPN
SOT-89
General Purpose
DIODES
VCEO
40V
Ic Max
1A
Pd Max
1W
hFE Gain
200
Quick Reference
The FCX491ATA is a NPN bipolar junction transistor in a SOT-89 package, manufactured by DIODES. It supports a breakdown voltage of 40V and continuous collector current of 1A. It is widely used in switching and amplification circuits.
Technical Specifications
| Parameter | Value | Description |
|---|---|---|
| Manufacturer | DIODES | Original Manufacturer |
| Package | SOT-89 | Physical mounting |
| Transistor Type | BJT | Bipolar Junction Transistor |
| Category | Single | Configuration |
| Collector-Emitter Voltage (VCEO) | 40V | Max breakdown voltage |
| Collector Current (Ic) | 1A | Max current handling |
| Power Dissipation (Pd) | 1W | Max thermal limit |
| DC Current Gain (hFE) | 200 | Base signal amplification ratio |
| Transition Frequency (fT) | 150MHz | Max operating frequency |
| Saturation Voltage (VCEsat) | 500mV | Voltage drop when fully ON |
| Emitter-Base Voltage (Vebo) | 7V | Max emitter-base breakdown |
| Collector Cutoff Current | 100nA | Leakage current when OFF |
| Operating Temp | -65℃~+150℃ | Safe junction temperature range |
Equivalent Transistors & Alternatives
| Part | Type | Package | VCEO | IC | hFE | Pd | Manufacturer / Datasheet |
|---|---|---|---|---|---|---|---|
| 2SD874A | NPN | SOT-89 | 40V | 1A | 50 | 500mW | Shikues 📄 PDF |
| BCX54-16(MS) | NPN | SOT-89 | 45V | 1A | 250 | 500mW | MSKSEMI 📄 PDF |
| BCX54-16(RANGE:100-250) | NPN | SOT-89 | 45V | 1A | 100 | 500mW | JSCJ 📄 PDF |
| BCX54-16 | NPN | SOT-89 | 45V | 1A | 100 | 1.3W | Slkor 📄 PDF |
| BCX54 | NPN | SOT-89 | 45V | 1A | 40 | 500mW | TWGMC 📄 PDF |
| BCX54(MS) | NPN | SOT-89 | 45V | 1A | 25 | 500mW | MSKSEMI 📄 PDF |
| BCX54 | NPN | SOT-89 | 45V | 1A | 25 | 1.3W | Shikues 📄 PDF |
| FCX690BTA | NPN | SOT-89 | 45V | 2A | 400 | 2W | DIODES 📄 PDF |
| 2SCR513P5T100 | NPN | SOT-89 | 50V | 1A | 180 | 2W | ROHM 📄 PDF |
| 2SD1615 | NPN | SOT-89 | 50V | 1A | 290 | 2W | Shikues 📄 PDF |
| 2SD874A | NPN | SOT-89 | 50V | 1A | 85 | 500mW | JSCJ 📄 PDF |
| 2SC4672G-B-AB3-R | NPN | SOT-89 | 50V | 2A | 200 | 500mW | UTC 📄 PDF |
| 2SCR553PT100 | NPN | SOT-89 | 50V | 2A | 180 | 2W | ROHM 📄 PDF |
| 2SC2873-Y-TP | NPN | SOT-89 | 50V | 2A | 240 | 500mW | MCC 📄 PDF |
| KTC4379-Y-RTF/P | NPN | SOT-89 | 50V | 2A | 240 | 1W | KEC 📄 PDF |
| 2SC2873 | NPN | SOT-89 | 50V | 2A | 240 | 500mW | GOODWORK 📄 PDF |
| PBSS4250X | NPN | SOT-89 | 50V | 2A | 150 | 1W | Nexperia 📄 PDF |
| 135 | NPN | SOT-89 | 50V | 2A | 120 | 500mW | JSCJ 📄 PDF |
| 2SC2873(RANGE:120-240) | NPN | SOT-89 | 50V | 2A | 120 | 1W | TOSHIBA 📄 PDF |
| 2SC2873-Y(TE12L | NPN | SOT-89 | 50V | 2A | 120 | 500mW | JSCJ 📄 PDF |