Fischer Elektronik TO-220 Heatsink Aluminium, Black Anodised, Push-On, 21°C/W, 12.7x19.05x10mm FK237SA220H

Fischer Elektronik FK237SA220H is a slim attachable heatsink specifically engineered for TO-220 transistor packages and other semiconductor devices requiring robust thermal management. Its aluminium construction and black anodised surface significantly improve heat dissipation efficiency, helping maintain optimal operating temperatures in densely packed electronic circuits.

This heatsink features a push-on clip design, facilitating a tool-free installation onto TO-220 device housings. The clips press firmly against the transistor case, optimizing thermal conductivity while ensuring stable mechanical retention. Its compact geometry - with dimensions of 12.7 mm (height), 19.05 mm (length), and 10 mm (width) - makes it particularly suitable for use in space-constrained PCB layouts.

FK237SA220H offers a thermal resistance of 21°C/W, enabling reliable cooling performance in moderate power scenarios. The diecast aluminium body is paired with a black anodised coating for increased surface area and corrosion protection. Tin-plated solder tags allow the heatsink to be soldered directly to the printed circuit board in a horizontal position, giving flexible mounting options for designers.

This product is RoHS compliant, ensuring compatibility with global electronics manufacturing regulations. It is suitable for a wide range of applications including industrial controls, laboratory instruments, power supplies, and commercial electronics systems where semiconductor reliability and extended component lifetime are essential.

As part of the Fischer Elektronik FK 237 series, FK237SA220H is valued for its slim footprint, optimal heat transfer characteristics, and ease of assembly. Its design supports both horizontal and vertical PCB installations, making it a versatile solution for engineers and technicians.

For more advanced electronic cooling components and a full range of heatsinks, browse the complete Fischer Elektronik collection and similar products in the Heatsink category at EnvMart.