The KL-196/63.5/SW/I/OL with Heatsink is an extruded, black aluminum heatsink with a length of 63.5mm, a width of 45mm, and a height of 12.7mm. It is manufactured by Seifert, a German manufacturer of custom heatsinks and cooling systems. The heatsink is designed to dissipate heat from a variety of electronic components including power transistors, power resistors, voltage regulators, LEDs, photocouplers, and solid-state relays. The heatsink has a unique design which allows for maximum efficiency in cooling, while also providing superior protection against corrosion and damage. The heatsink is an ideal solution for any application in which large amounts of heat must be dissipated quickly and efficiently.