Question 1

What are the key features of STMicroelectronics BTA40-800B?

EZKEY · Accepted Answer

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.

Question 2

What are the main application scenarios for BTA40-800B?

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 BTA40-800B work?

EZKEY · Accepted Answer

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.

Question 4

What is the technical performance of BTA40-800B?

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 BTA40-800B?

EZKEY · Accepted Answer

The global Triacs market is growing at ~6-8% CAGR, with particularly strong demand in power management. STMicroelectronics BTA40-800B 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 BTA40-800B?

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, STMicroelectronics provides full technical support and reference designs.

Critical Commutation (dV/dt)	Standard
Data Tier	Family Level
Device Type	Triac
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
On-State RMS Current (IT(RMS))	40 A
Operating Temperature	-40 ~ +150 °C
Package / Case	TO-220AB
Repetitive Peak Off-State Voltage (VDRM)	800 V

Recommended Part	Brand	Description
BTA40600BRG	STMicroelectronics	40 A standard TRIACs
BTB16-700BWRG	STMicroelectronics	Thyristor TRIAC 700V 126A 3-Pin(3+Tab) TO-220AB Tube
BTA24-800BWRG	STMicroelectronics	TRIAC 800V 25A TO-220AB

BTA40-800B | STMicroelectronics TRIAC 800V 40A RD-91

Product Details

PDF Datasheet

Technical Docs

Technical Parameters

BTA40-800B Application and Selection Guide

BTA40-800B Model and Manufacturer Information

BTA40-800B Product Parameters and Description

BTA40-800B Application and Selection Reference

Recommended Part Numbers for BTA40-800B