Unique-Bargains TO-220 Aluminum Heatsink 34x25x12mm Black 10pcs

Compact TO-220 Heatsink Kit

This kit provides ten black aluminium heatsinks sized 34 x 25 x 12 mm for TO-220 transistors, diodes or voltage regulators. Each unit includes two support pins, a blue silicone pad, a screw and a white plastic insulator for secure mounting. The lightweight alloy construction suits DIY electronics, 3D printer boards or general chip cooling tasks.

Verify Component Clearance And Mounting Holes

Confirm the target device uses a TO-220 package and that the 34 mm length, 25 mm width and 12 mm height fit within your board layout. Check that the M3 mounting hole aligns with the heatsink's hole and that the two support pins can engage the PCB or chassis without fouling adjacent parts. Ensure the included insulator and pad provide adequate electrical isolation for your circuit.

Steady Thermal Dissipation In Continuous Use

Under sustained load the aluminium body spreads heat from the TO-220 device into the surrounding air without forced airflow. The two support pins maintain consistent mechanical pressure so thermal contact remains stable over long periods. The silicone pad and plastic insulator prevent thermal cycling from loosening the assembly during extended operation.