BSS138W MOSFET Datasheet & Specifications
N-Channel
SOT-323
Logic-Level
R+O
Vds Max
50V
Id Max
220mA
Rds(on)
3.5Ω@10V;6Ω@4.5V
Vgs(th)
1.5V
Quick Reference
The BSS138W is an N-Channel MOSFET in a SOT-323 package, manufactured by R+O. It supports a drain-source breakdown voltage of 50V and a continuous drain current of 220mA. It is widely used in switching and power applications.
Technical Specifications
| Parameter | Value | Description |
|---|---|---|
| Manufacturer | R+O | Original Manufacturer |
| Package | SOT-323 | Physical mounting |
| Transistor Type | MOSFET | Metal-Oxide-Semiconductor FET |
| Category | Single | Configuration |
| Drain-Source Voltage (Vds) | 50V | Max breakdown voltage |
| Continuous Drain Current (Id) | 220mA | Max current handling |
| Power Dissipation (Pd) | 300mW | Max thermal limit |
| On-Resistance (Rds(on)) | 3.5Ω@10V;6Ω@4.5V | Resistance when turned fully on |
| Gate Threshold (Vgs(th)) | 1.5V | Voltage required to turn on |
| Gate Charge (Qg) | - | Switching energy |
| Input Capacitance (Ciss) | 27pF | Internal gate capacitance |
| Output Capacitance (Coss) | 13pF | 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 |
|---|---|---|---|---|---|---|---|
| 2N7002W-7-F-ES | N-Channel | SOT-323 | 60V | 300mA | 1.85Ω@10V 2.05Ω@4.5V |
1.6V | ElecSuper 📄 PDF |
| 2N7002KW | N-Channel | SOT-323 | 60V | 300mA | 1.85Ω@10V | 1.6V | ElecSuper 📄 PDF |