and passive heat sinks to its alaska line of solutions to cool freescale
semiconductor processors. both the ats-405 and ats-474 heat sinks provide
optimal cooling for freescale mpc8641d dual-core powerpc processors in
enclosures such as atx cabinets, blade servers and 1u to 4u rack-mount
the ats-405 juneau active heat sink includes an integral fan to enhance
cooling performance where minimum airflow is available. the fan blows air
through a linear field of flat aluminum fins on the heat sink. the required
thermal performance for the 8641d processor is 0.7 degrees c/w under given
load and die area specifications. the ats-405 sink delivers thermal
resistance of 0.51 degrees c/w with thermal grease to provide an 18% margin
of safety over the specified thermal resistance. the fan sink assembly screw
mounts to the pcb and stands 54.9-mm high.
the ats-474 anchorage passive heat sink incorporates the company‚Ļs
maxiflow spread fin array technology and is specially designed to provide
high levels of cooling in low airflow conditions. it is designed to cool the
mpc8641d processors in restricted height enclosures such as 2u racks where
airflow is limited. the anchorage heat sink features 26 various sized,
spaced, and angled fins to maximize exposure to available air. testing of
these heat sinks shows thermal resistance of 1.05 degrees c/w in air
velocity of 100 lfm, and 0.49 degrees c/w in air velocity of 400 lfm,
according to the company. the ats-474 heat sink measures 30.6-mm high and
screw mounts directly to the pcb.
the ats-405-c1-ro juneau heat sink is priced at $41.50 and the ats-474-c1-ro
anchorage heat sink is priced at $30.00. please call the company for volume
pricing (over 1,000 units). delivery is six weeks.
ats also offers maxiflow heat sinks for cooling bgas.
advanced thermal solutions inc., 1-781-769-2800,