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BSS138 J1 – N Channel Mosfet – SOT-23 (Pack of 3)

SKU: GGF50XYU6O
The BSS138 J1 is a compact N-Channel Enhancement Mode MOSFET designed for low-power switching and logic-level applications. Housed in a miniature SOT-23 package, it offers low gate threshold voltage, fast switching performance, and low on-resistance, making it ideal for microcontroller-based circuits, logic level shifters, battery-powered devices, and signal switching applications. Its ability to operate directly from 3.3V and 5V logic...
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Specifications

Specifications:

MOSFET Type: N-Channel Enhancement Mode
Package Type: SOT-23
Maximum Drain-Source Voltage (VDS): 50V
Continuous Drain Current (ID): 200mA to 220mA
Pulsed Drain Current (IDM): Up to 1.5A
Maximum Gate-Source Voltage (VGS): ±20V
Gate Threshold Voltage (VGS(th)): Typically 1.3V to 1.6V
Drain-Source On-Resistance (RDS(on)) at VGS = 10V: 3.0Ω to 3.5Ω
Drain-Source On-Resistance (RDS(on)) at VGS = 4.5V: 4Ω to 6Ω
Power Dissipation (PD): 300mW to 350mW
Operating Temperature Range: -55°C to +150°C
Mounting Style: Surface Mount Device (SMD)
Pin Count: 3 Pins (Gate, Drain, and Source)

Additional Resources

BSS138 J1 – N Channel Mosfet – SOT-23.PDF

FAQ

1. What is the BSS138 J1 MOSFET used for?

The BSS138 J1 is a small-signal N-channel MOSFET commonly used for logic-level switching, voltage level shifting, load control, and low-power electronic circuits. It is widely used in microcontroller and embedded system projects.

2. What are the key electrical ratings of the BSS138 J1?

The MOSFET supports a maximum drain-source voltage of 50V, continuous drain current of approximately 200–260mA, and a gate-source voltage of ±20V.

3. Can the BSS138 J1 be driven directly by a microcontroller?

Yes. The BSS138 features a low gate threshold voltage, making it suitable for direct control from 3.3V and 5V logic devices such as Arduino, ESP32, ESP8266, and Raspberry Pi systems.

4. Why is the BSS138 commonly used in logic level shifters?

Its low threshold voltage and fast switching characteristics allow it to efficiently translate signals between different logic levels, such as 3.3V and 5V communication interfaces like I²C.

5. What package does the BSS138 J1 come in?

The BSS138 J1 is supplied in a compact SOT-23 surface-mount package, making it suitable for space-constrained PCB designs and automated assembly processes

View full product details

The BSS138 J1 is a compact N-Channel Enhancement Mode MOSFET designed for low-power switching and logic-level applications. Housed in a miniature SOT-23 package, it offers low gate threshold voltage, fast switching performance, and low on-resistance, making it ideal for microcontroller-based circuits, logic level shifters, battery-powered devices, and signal switching applications. Its ability to operate directly from 3.3V and 5V logic levels makes it a popular choice in Arduino, ESP32, STM32, and Raspberry Pi projects.

Features

  • N-Channel Enhancement Mode MOSFET
  • Compact SOT-23 surface-mount package
  • Low gate threshold voltage for logic-level operation
  • Fast switching speed
  • Low input and output leakage current
  • Low on-resistance for efficient switching
  • Suitable for battery-operated systems