Darrah stocks a wide variety of heat sinks and extrusions for stud type, module, and puck type semiconductor packages. On our shelves are over 20 popular extrusions, already cut, machined and finished for common circuit configurations.

Darrah offers machining and finishing to customer prints as well.

View select pages from our new Darrah Gold Brochure in PDF Format describing our line of Power Semiconductor Assemblies.

The following drawing represents the Darrah A5 extrusion for standard mechanical configurations. This extrusion plus 12 others are all in stock, machined, finished, and available for immediate shipment.

Extrusion	A	B	C	D	E	H	MTG. RAIL	APPROX. WT.W/MTG. RAILS
SINGLE DEVICE	--	4.50	2.25	7.50	8.50	6.50	P12010A	5.00#
TWO DEVICE	5.50	10.00	2.25	7.50	8.50	6.50	P12010A	10.00#
THREE DEVICE	11.00	15.50	2.25	7.50	8.50	6.50	P12010A	15.00#
SIX DEVICE	5.50	10.00	2.25	19.50	20.50	6.50	P12016	30.00#

Darrah's preferred supplier is Aavid Thermal Products, Inc. Aavid catalogs offer over 1300 extrusions. Darrah stocks Aavid's extrusions in six, eight and ten foot lengths or can cut and machine per your drawing.

Link to: http://www.aavid.com/datashts/extrude/extrude.htm