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BSS138BK

BSS138BK

MPN: BSS138BK,215
Nexperia USA Inc.
N-Channel 60 V 360mA (Ta) 350mW (Ta), 1.14W (Tc) Surface Mount TO-236AB
Active5,200 in stock
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Overview

The BSS138BK is an AEC-Q101 qualified N-channel enhancement mode Trench MOSFET in a compact SOT-23 (TO-236AB) package. Designed for logic-level switching, it features integrated ESD protection up to 1.5 kV and supports a maximum drain-source voltage of 60V with a continuous drain current of 360mA.

Why Choose This Part

The component offers a low gate threshold voltage of 1.6V, ensuring full compatibility with 1.8V, 3.3V, and 5V logic families. Its Trench MOSFET technology provides low Rds(on) of 1.6 Ohms at 10V, while the AEC-Q101 qualification ensures high reliability in harsh automotive environments.

Applications

Logic Level Translation
Bi-directional level shifting between low-voltage microcontrollers and 5V peripherals.
Relay and Solenoid Driver
Low-side switching for inductive loads in automotive and industrial control systems.
High-Speed Line Driver
Fast switching speeds make it suitable for driving communication lines and digital signals.
Battery Management Systems
Small-signal switching and cell balancing control in automotive battery monitoring.

Key Specifications

FET Type N-Channel
Vgs (Max) +/-20V
Technology MOSFET (Metal Oxide)
Mounting Type Surface Mount
Package / Case TO-236-3, SC-59, SOT-23-3
Vgs(th) (Max) @ Id 1.6V @ 250uA
Operating Temperature -55degC ~ 150degC (TJ)
Rds On (Max) @ Id, Vgs 1.6Ohm @ 350mA, 10V
Power Dissipation (Max) 350mW (Ta), 1.14W (Tc)
Supplier Device Package TO-236AB
Gate Charge (Qg) (Max) @ Vgs 0.7 nC @ 4.5 V
Drain to Source Voltage (Vdss) 60 V
Input Capacitance (Ciss) (Max) @ Vds 56 pF @ 10 V
Drive Voltage (Max Rds On, Min Rds On) 10V
Current - Continuous Drain (Id) @ 25degC 360mA (Ta)

Getting Started

Integrate this MOSFET into your design by ensuring the gate is driven directly from a microcontroller GPIO through a small series resistor to dampen oscillations. For level-shifting applications, pair it with pull-up resistors on both the source and drain sides. Refer to the SOT-23 footprint requirements for standard PCB assembly.