Question 1

What are the key features of Fairchild Semiconductor BSS138K?

EZKEY · Accepted Answer

This product belongs to the MOSFETs category and ships in standard packaging. It features high reliability, stable performance and low power consumption. Key parameters include wide operating range, low loss, and over-temperature protection, suitable for industrial applications. Manufactured by Fairchild Semiconductor with full traceability.

Question 2

What are the main application scenarios for BSS138K?

EZKEY · Accepted Answer

Typical applications include power management, industrial control. Additionally, it is widely used in automotive electronics, telecom infrastructure, medical devices, and consumer electronics as a critical circuit component, improving system integration and energy efficiency.

Question 3

How does BSS138K work?

EZKEY · Accepted Answer

This device follows established MOSFETs design principles. Core functional stages include input handling, signal and power processing, and protection logic, ensuring stable operation under varying conditions. Refer to the datasheet for the detailed characteristics and application guidance.

Question 4

What is the technical performance of BSS138K?

EZKEY · Accepted Answer

Performance highlights: stable characteristics across the operating temperature range, low loss, and long service life. Reliable contact and shock resistance, with protection against over-current and over-voltage where applicable. Meets industrial and automotive reliability standards where the series qualifies.

Question 5

What is the current market demand for BSS138K?

EZKEY · Accepted Answer

The global MOSFETs market is growing at ~6-8% CAGR, with particularly strong demand in power management. Fairchild Semiconductor BSS138K is a mainstream model with stable stock and a typical lead time of 2-4 weeks. Driven by new energy and smart electronics trends, inquiries for this model are steadily increasing, indicating a positive long-term outlook.

Question 6

What are the technical characteristics of BSS138K?

EZKEY · Accepted Answer

Three main technical features: 1) High reliability – stable performance over the rated life; 2) Low-loss design – reduced energy loss in operation; 3) Wide adaptability – compatible with various operating conditions. Additionally, Fairchild Semiconductor provides full technical support and reference designs.

Continuous Drain Current (ID)	100 mA ~ 500 mA
Data Tier	Family Level
FET Type	N-Channel MOSFET
Gate Charge (Qg)	Low
Gate Threshold Voltage (VGS(th))	1.5 ~ 2.5 V
Input Capacitance (Ciss)	Low
Mounting	Surface Mount
Mounting Type	SMD
Operating Temperature	-55 ~ +150 °C
Package / Case	SOT-23
Product Type	Multilayer Ceramic Capacitor

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BSS138K | Fairchild Semiconductor SOT23-3 350mW

Product Details

PDF Datasheet

Technical Docs

Technical Parameters

BSS138K Application and Selection Guide

BSS138K Model and Manufacturer Information

BSS138K Product Parameters and Description

BSS138K Application and Selection Reference

Recommended Part Numbers for BSS138K