Profile: Columbia-Staver Ltd. is a heat sink manufacturer. We are accredited to ISO 9001:2008 quality standard. We work within the semi-conductor industry. We focus on the application of the basic principles of conduction, convection and radiation. Our Thermofin heat sinks facilitate with its standard in circuit board package density. Its unique butterfly shape solves the problem of heat transfer for dual-in-line integrated circuits, by taking the heat directly from the lead frame. Our Thermofab range of fabricated heat sinks have features like multistage progression tooling, in-tool assembly of solder tags, inclusion of a planished semiconductor mounting area and transistor clip slots. They are lightweight in construction. We have a wide variety of clips available to ensure the secure mounting of transistors and integrated circuits onto our range of heat sinks. Our Thermosil 300 is an elastomer made from silicone-impregnated fibreglass fabric, offering thermal conductivity and electrical isolation support. The pliable material creates a degree of surface contact equal to that of mica or grease and avoids their familiar failings. We also enhance with tool making service.