Reliable Switching With Low-Gate-Drive Triacs

The BTA204X families of sensitive-gate three-quadrant triacs from NXP Semiconductors offer a variety of gate sensitivities for reliable operation when driven directly from a controller such as an MCU.

The BTA204X-600D has 5mA gate sensitivity allowing direct connection to a MCU, while the BTA204X-600E has 10mA sensitivity for optimum commutation performance when used with low-power drivers. The BTA204X-600F is optimised for higher gate-drive conditions, with gate sensitivity of 25mA. The devices are rated for maximum average on-state current of 4A, and withstand up to 800V repetitive off-state voltage.

Three-quadrant triacs such as the BTA204X deliver high resistance to false triggering, but do not require external protection such as the snubber circuit normally required with conventional four-quadrant devices. Hence they allow engineers to save part count and component costs, improve reliability, and avoid the potential for damage to the triac through incorrect choice of snubber components.

The BTA204X triacs are delivered in the industry-standard SOT186A (TO-220F) package, supporting easy design-in. The all-plastic package offers the lowest free-air thermal resistance of 55K/W and allows convenient clip or screw mounting to a heatsink.

 

FEATURES Pinning compatible with 4-quadrant triacs 27A non-repetitive peak on-state current 100A/µs maximum current gradient after switch-on 125°C maximum junction temperature

APPLICATIONS Motor control Highly-inductive loads Solenoid valve controllers Inductive coils Pumps and dispensers

 

The BTA204x series is NXP’s latest generation of triacs optimised for reliable commutation

 

NXP Semiconductors / BTA204X