What are the key features of STMicroelectronics BT4840?

This product belongs to the Triacs 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 STMicroelectronics with full traceability.

What are the main application scenarios for BT4840?

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.

How does BT4840 work?

This device follows established Triacs 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.

What is the technical performance of BT4840?

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.

What is the current market demand for BT4840?

The global Triacs market is growing at ~6-8% CAGR, with particularly strong demand in power management. STMicroelectronics BT4840 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.

What are the technical characteristics of BT4840?

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, STMicroelectronics provides full technical support and reference designs.

BT4840 | STMicroelectronics -

Category: Triacs

Brand: STMicroelectronics

Stock: On request

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Product Details

PDF Datasheet

Technical Docs

Description: -

Technical Parameters

Applications	General Purpose
Critical Commutation (dV/dt)	Standard
Data Tier	Family Level
Device Type	Triac
Features	General Purpose
Gate Sensitivity	Standard Gate
Gate Trigger Current (IGT)	25 mA typical
Gate Trigger Voltage (VGT)	1.3 V typical
Holding Current (IH)	50 mA typical
Mounting	Through Hole
Mounting Type	Through Hole
Number Of Phases	1
Operating Temperature	-40 ~ +150 °C
Package / Case	Through Hole
Product Type	Integrated Circuit
RoHS	Compliant

Standard Packaging: Standard packaging refers to the minimum packaging quantity obtained from the manufacturer/distributor. Therefore, the minimum order quantity may be less than the manufacturer's standard packaging quantity. When products are broken down into smaller quantities, the packaging type (i.e., reel, tube, tray) may change, subject to actual packaging delivery.

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PCB Footprint (.pcb)

3D Model (.stp)

Schematic Symbol (.sch)

DXF Drawing

BT4840 Application and Selection Guide

BT4840 Model and Manufacturer Information

BT4840, a Triacs manufactured by STMicroelectronics: BT4840 helps you confirm the specific model, while STMicroelectronics helps you confirm the product source. If you are selecting a part, you can first check whether BT4840 meets your requirements, then check whether STMicroelectronics matches your expectations, and then refer to - for further evaluation.

BT4840 Product Parameters and Description

The main parameters of STMicroelectronics's Triacs product BT4840 include -. This is a Triacs produced by STMicroelectronics, and it also offers good applicability in embedded systems, common 3C electronics, automotive electronics, electronic devices, and IoT devices.

BT4840 Application and Selection Reference

STMicroelectronics's Triacs product BT4840 has a relatively wide range of applications in embedded systems, common 3C electronics, automotive electronics, electronic devices, and IoT devices. Overall, BT4840 is a Triacs solution worth considering, and manufacturer STMicroelectronics provides long-term supply program support for this product, which helps ensure supply continuity during mass production.

Recommended Part Numbers for BT4840

Designers looking for BT4840 recommended parts can evaluate the following options. BT4840 selection decisions should verify parameters, tolerance and packaging against the original design bill of materials.

Recommended Part	Brand	Description
BTA16-600BWRG	STMicroelectronics	TRIAC 600V 16A TO-220AB
BTA16-800BRG	STMicroelectronics	TRIAC 800V 16A TO220AB
BTA24-600BWRG	STMicroelectronics	TRIAC 600V 25A TO-220AB

EZKEY can provide BT4840 recommended part comparison data and engineering samples for evaluation.