Question 1

What are the key features of Nexperia BUK9840-55/CUX?

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 Nexperia with full traceability.

Question 2

What are the main application scenarios for BUK9840-55/CUX?

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 BUK9840-55/CUX 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 BUK9840-55/CUX?

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 BUK9840-55/CUX?

EZKEY · Accepted Answer

The global MOSFETs market is growing at ~6-8% CAGR, with particularly strong demand in power management. Nexperia BUK9840-55/CUX 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 BUK9840-55/CUX?

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, Nexperia provides full technical support and reference designs.

Automotive Qualified	AEC-Q101
Configuration	Single
Data Tier	Family Level
FET Type	N-channel MOSFET
Gate Threshold Voltage (Vgs(th))	2 to 4 V
Gate Type	Standard level
Lead Free	Yes
Mounting Type	Surface Mount
Number of Transistors	1 (single)
Operating Junction Temp (Tj max)	175 °C
Operating Temperature	-55°C ~ +150°C
Package / Case	LFPAK56 (SOT669)
Packaging	Tape & Reel
Product Type	MOSFET
RoHS	Compliant
Technology	TrenchMOS

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BUK9840-55/CUX | Nexperia

Product Details

PDF Datasheet

Technical Docs

Technical Parameters

BUK9840-55/CUX Application and Selection Guide

BUK9840-55/CUX Model and Manufacturer Information

BUK9840-55/CUX Product Parameters and Description

BUK9840-55/CUX Application and Selection Reference

Recommended Part Numbers for BUK9840-55/CUX