The BTA26 is a 25A TRIAC designed for general-purpose AC power switching applications, offering reliable bidirectional control of mains-powered loads. It features low thermal resistance through clip-bonding technology, high commutation capability, and is available in both through-hole and surface-mount packages for flexible system integration. This TRIAC is widely used in motor controls, lighting dimmers, heating controllers, industrial automation, and household appliances.
Part Number: BTA26
Function: 25A, TRIACS
Package: TOP3 Pin Type
Manufacturer: ST Microelectronics
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Description
This is 25A, Triacs. Available either in through-hole or surface-mount packages, the BTA24, BTB24, BTA25, BTA26, BTB26 and T25 triac series is suitable for general purpose mains power AC switching.
A TRIAC, short for “triode for alternating current,” is a type of electronic component that acts as a bidirectional switch for controlling AC (alternating current) power. It’s often used for controlling the intensity of lamps, the speed of AC motors, and other applications where precise control of AC power is needed.
Features
1. High current triac
2. Low thermal resistance with clip bonding
3. High commutation (4 quadrant) or very high commutation (3 quadrant) capability
4. BTA series UL1557 certified (File ref: 81734)
5. Packages are RoHS (2002/95/EC) compliant
Characteristics
How to Choose This Part
- Select for AC switching applications requiring up to 25A RMS load current
- Choose the appropriate voltage rating based on the mains supply voltage
- Suitable for both resistive and inductive load control
- Use BTA versions when an insulated mounting tab is preferred
- Verify thermal management meets the expected power dissipation requirements
Applications
Applications include the ON/OFF function in applications such as static relays, heating regulation, induction motor starting circuits, etc., or for phase control operation in light dimmers,
motor speed controllers, and silmilar.
The snubberless versions (BTA/BTB…W and T25 series) are especially recommended for use on
inductive loads, due to their high commutation performances. The BTA series provides an
insulated tab (rated at 2500 VRMS).
Alternative / Equivalent Products
- BTA24
- BTA25
- BTB24
- BTB26
- T25 Series
- Q6025L6
BTA26 PDF Datasheet
