BSS138 MOSFET Datasheet & Equivalents (UMW, SOT-23)
N-Channel
SOT-23
Logic-Level
UMW
Vds Max
50V
Id Max
300mA
Rds(on)
2.5Ω@10V;3.5Ω@2.5V
Vgs(th)
1.5V
Quick Reference
The BSS138 is an N-Channel MOSFET in a SOT-23 package, manufactured by UMW. It supports a drain-source breakdown voltage of 50V and a continuous drain current of 300mA. 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) | 50V | Max breakdown voltage |
| Continuous Drain Current (Id) | 300mA | Max current handling |
| Power Dissipation (Pd) | 300mW | Max thermal limit |
| On-Resistance (Rds(on)) | 2.5Ω@10V;3.5Ω@2.5V | Resistance when turned fully on |
| Gate Threshold (Vgs(th)) | 1.5V | Voltage required to turn on |
| Gate Charge (Qg) | - | Switching energy |
| Input Capacitance (Ciss) | 50pF | Internal gate capacitance |
| Output Capacitance (Coss) | 25pF | 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 |
|---|---|---|---|---|---|---|---|
| BSN20 | N-Channel | SOT-23 | 50V | 300mA | 2.5Ω@10V | 1.5V | Slkor 📄 PDF |
| BSS138-6AF | N-Channel | SOT-23 | 50V | 340mA | 3Ω@10V | 1.6V | FOSAN 📄 PDF |
| AO3422 | N-Channel | SOT-23 | 55V | 2.1A | 160mΩ@4.5V | 2V | AOS 📄 PDF |
| SI2310M-6AF | N-Channel | SOT-23 | 60V | 3A | 86mΩ@10V | 1.3V | FOSAN 📄 PDF |
| HL2310A | N-Channel | SOT-23 | 60V | 3A | 90mΩ@10V 125mΩ@4.5V |
2V | R+O 📄 PDF |
| BRCS2310MA | N-Channel | SOT-23 | 60V | 3A | 94mΩ@4.5V | 1.8V | BLUE ROCKET 📄 PDF |
| NCE6003X | N-Channel | SOT-23 | 60V | 3A | 110mΩ@4.5V | 2V | NCE 📄 PDF |
| SI2310 | N-Channel | SOT-23 | 60V | 3A | 125mΩ@4.5V | 2V | GOODWORK 📄 PDF |
| SL2310 | N-Channel | SOT-23 | 60V | 3A | 125mΩ@4.5V | 2V | Slkor 📄 PDF |
| DMZ0642 | N-Channel | SOT-23 | 60V | 400mA | 1Ω@0V | 1.5V | ARK micro 📄 PDF |
| BSS138NH6327-ES | N-Channel | SOT-23 | 60V | 400mA | 1.5Ω@10V | 1V | ElecSuper 📄 PDF |
| BSS138P | N-Channel | SOT-23 | 60V | 400mA | 1.5Ω@10V | 1V | ElecSuper 📄 PDF |
| BSS138BK | N-Channel | SOT-23 | 60V | 400mA | 1.5Ω@10V | 1V | ElecSuper 📄 PDF |
| BSS138BK | N-Channel | SOT-23 | 60V | 360mA | 1.6Ω@10V | 1.6V | Nexperia 📄 PDF |
| 215 | N-Channel | SOT-23 | 60V | 500mA | 1.7Ω@4.5V | 2V | WILLSEMI 📄 PDF |
| WNM6001-3/TR | N-Channel | SOT-23 | 60V | 300mA | 1.85Ω@10V 2.05Ω@4.5V |
1.6V | ElecSuper 📄 PDF |
| 2N7002 | N-Channel | SOT-23 | 60V | 300mA | 2.05Ω@4.5V | 1.6V | Chao He 📄 PDF |
| CCX2N7002K | N-Channel | SOT-23 | 60V | 380mA | 2.8Ω@10V | 1V | LRC 📄 PDF |
| L2N7002SLLT1G | N-Channel | SOT-23 | 60V | 380mA | - | 2V | DIODES 📄 PDF |
| DMN62D0U-13 | N-Channel | SOT-23 | 100V | 5A | 90mΩ@10V | 1.5V | MSKSEMI 📄 PDF |