SI2318A MOSFET Datasheet & Specifications
N-Channel
SOT-23
Logic-Level
UMW
Vds Max
40V
Id Max
5.6A
Rds(on)
36mΩ@10V;46mΩ@4.5V
Vgs(th)
2.5V
Quick Reference
The SI2318A is an N-Channel MOSFET in a SOT-23 package, manufactured by UMW. It supports a drain-source breakdown voltage of 40V and a continuous drain current of 5.6A. It is widely used in switching and power applications.
Technical Specifications
| Parameter | Value | Description |
|---|---|---|
| Manufacturer | UMW | Original Manufacturer |
| Package | SOT-23 | Physical mounting |
| Transistor Type | MOSFET | Metal-Oxide-Semiconductor FET |
| Category | Single | Configuration |
| Drain-Source Voltage (Vds) | 40V | Max breakdown voltage |
| Continuous Drain Current (Id) | 5.6A | Max current handling |
| Power Dissipation (Pd) | 2.1W | Max thermal limit |
| On-Resistance (Rds(on)) | 36mΩ@10V;46mΩ@4.5V | Resistance when turned fully on |
| Gate Threshold (Vgs(th)) | 2.5V | Voltage required to turn on |
| Gate Charge (Qg) | 5.8nC@20V | Switching energy |
| Input Capacitance (Ciss) | 340pF | Internal gate capacitance |
| Output Capacitance (Coss) | 60pF | Internal output capacitance |
| Operating Temp | -55℃~+150℃ | Safe junction temperature range |
Equivalent MOSFETs & Alternatives
| Part | Type | Package | Vds | Id | Rds(on) | Vgs(th) | Manufacturer / Datasheet |
|---|---|---|---|---|---|---|---|
| SQ2318AES-T1_BE3 | N-Channel | SOT-23 | 40V | 8A | 31mΩ@10V | 2.5V | VISHAY 📄 PDF |