Overview
The BSS138W is an N-Channel Logic Level Enhancement Mode Field Effect Transistor produced by onsemi. This MOSFET is designed to minimize on-state resistance while providing rugged, reliable, and fast switching performance. It is particularly suited for low voltage, low current applications such as small servo motor control, power MOSFET gate drivers, and other switching applications.
Key Specifications
| Parameter | Symbol | Conditions | Unit | Value |
|---|---|---|---|---|
| Drain-Source Voltage | VDSS | V | 50 | |
| Gate-Source Voltage | VGSS | V | ±20 | |
| Continuous Drain Current | ID | A | 0.21 | |
| Pulsed Drain Current | ID | A | 0.84 | |
| Maximum Power Dissipation | PD | mW | 340 | |
| On-State Resistance | RDS(on) | VGS = 10 V, ID = 0.22 A | Ω | 3.5 |
| On-State Resistance | RDS(on) | VGS = 4.5 V, ID = 0.22 A | Ω | 6.0 |
| Gate to Source Threshold Voltage | VGS(th) | V | 0.8 - 1.5 | |
| Input Capacitance | Ciss | pF | 32 - 43 | |
| Output Capacitance | Coss | pF | 7.2 - 10 | |
| Reverse Transfer Capacitance | Crss | pF | 2.8 - 4.2 | |
| Thermal Resistance, Junction to Ambient | RθJA | °C/W | 367 |
Key Features
- High density cell design for extremely low RDS(on)
- Rugged and reliable operation
- Compact industry standard SOT-323 surface mount package
- Pb-free and halide-free
- Fast switching performance
- Low input capacitance
- Low gate threshold voltage
- Low input/output leakage
Applications
- Small servo motor control
- Power MOSFET gate drivers
- Other switching applications
- Power management
Q & A
- What is the maximum drain-source voltage of the BSS138W MOSFET?
The maximum drain-source voltage (VDSS) is 50 V.
- What is the typical on-state resistance of the BSS138W at VGS = 10 V and ID = 0.22 A?
The typical on-state resistance (RDS(on)) is 3.5 Ω.
- What is the gate to source threshold voltage range of the BSS138W?
The gate to source threshold voltage (VGS(th)) range is 0.8 to 1.5 V.
- What is the maximum continuous drain current of the BSS138W?
The maximum continuous drain current (ID) is 0.21 A.
- What is the thermal resistance, junction to ambient, of the BSS138W?
The thermal resistance, junction to ambient (RθJA), is 367 °C/W.
- What package type does the BSS138W come in?
The BSS138W comes in a compact industry standard SOT-323 surface mount package.
- Is the BSS138W Pb-free and halide-free?
Yes, the BSS138W is Pb-free and halide-free.
- What are some typical applications of the BSS138W?
Typical applications include small servo motor control, power MOSFET gate drivers, and other switching applications.
- What is the maximum operating temperature of the BSS138W?
The maximum operating temperature is 150 °C.
- What is the input capacitance range of the BSS138W?
The input capacitance (Ciss) range is 32 to 43 pF.
