They can be used as an on/off function in applications such as static relays, heating control, induction motor starting circuits... Or for phase control in light dimmers, motor speed controllers. Thanks to the clip mounting technique, they provide excellent performance in terms of surge current handling .By using an internal ceramic washer, the BTA series provides a voltage-insulated tab (rated at 2500VRMS).Product name: TriacsModel: BTA41-600BVoltage: 600VRMS on current: 40AMounting hole diameter: 4mm/0.16 inch Pin size: 16 x 5.04mm/ 0.63 inch x 0.2 inch ( L x Pitch) Body dimensions: 36 x 15 x 4 mm / 1/4 inch x 0.6 inch x 0.16 inch (L x W x D) Material: Plastic, Metal Package content: 2 x Triacs Above content only packaging, other products are not included. Note: Light shooting and different displays may cause the color of the item in the picture a little different from the real thing. The measurement error is +/- 1-3cm.