SMD MOSFET BSS138 SOT23 50V

The BSS138 is a high-performance N-channel logic level enhancement mode MOSFET manufactured using onsemi's proprietary DMOS technology. This surface-mount transistor comes in a compact SOT-23 package, making it perfect for space-constrained applications. With its ability to handle 50V drain-to-source voltage and 220mA continuous drain current, it excels in low-voltage switching scenarios. The BSS138 features a low gate threshold, allowing it to be driven directly by logic-level signals (3.3V or 5V), eliminating the need for additional driver circuitry. Its high cell density DMOS construction ensures efficient switching performance and low power consumption. Common applications include voltage level shifting between different logic domains, signal amplification, LED driving, and as a general-purpose switch in microcontroller projects. The device's small footprint, combined with its robust electrical characteristics, makes it an excellent choice for battery-powered devices, IoT applications, and compact electronic designs where board space is at a premium.