BSS138BK: 60 V, 360 mA N-channel Trench MOSFET, SOT23 package

Nexperia

The Nexperia BSS138BK is an N-channel enhancement mode Field-Effect Transistor (FET) that utilizes Trench MOSFET technology, packaged in a small SOT23 (TO-236AB) Surface-Mounted Device (SMD) plastic package. This component is designed to offer efficient power control and switching capabilities with a drain-source voltage of up to 60 V and a continuous drain current of up to 360 mA.

Key features of the BSS138BK include logic-level compatibility, providing ease of use in various circuit designs, and ESD protection up to 1.5 kV, ensuring reliability and durability in sensitive applications. Its very fast switching capability makes it suitable for high-speed switching applications. Furthermore, it is AEC-Q101 qualified, indicating its suitability for automotive applications.

• Drain-Source Voltage (VDS): 60 V
• Gate-Source Voltage (VGS): ±20 V
• Drain Current (ID): 360 mA at VGS = 10 V, 25°C
• Drain-Source On-State Resistance (RDSon): 1 to 1.6 Ω at VGS = 10 V, ID = 350 mA
• Total Power Dissipation (Ptot): 350 mW at 25°C
• Junction Temperature (Tj): -55 to 150 °C
• ESD Protection: Up to 1.5 kV

• Relay driver
• Low-side loadswitch
• High-speed line driver
• Switching circuits

MOSFETs (Metal-Oxide-Semiconductor Field-Effect Transistors) are a type of FET designed for amplifying or switching electronic signals. They are widely used in electronic devices due to their high efficiency, reliability, and the ability to handle significant power levels. N-channel MOSFETs, like the BSS138BK, have electrons as the charge carriers and are typically used for high-speed switching applications.

When selecting a MOSFET for a particular application, key parameters such as drain-source voltage, gate-source voltage, drain current, and power dissipation need to be considered to ensure the component meets the circuit requirements. Additionally, the package type and thermal characteristics are important factors affecting the MOSFET's performance and suitability for the intended application.

MOSFETs are integral in various applications, from power management in portable devices to controlling motors in automotive systems. Their ability to efficiently switch and control power makes them essential components in modern electronic design. Understanding the specific requirements of your application, including the necessary voltage and current levels, as well as the desired switching speed, will guide the selection of the appropriate MOSFET.