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FEATURES

? Material: Aluminum

? Surface: Black Anodized Processing

? Unidirectional Pin Fin

? Excellent Conductivity

? Corrosion Resistant

? Available in Various Lengths

? Available with Pressure Sensitive Adhesives for Quick

and Easy Mounting

DESCRIPTION

This heat sink is made up of aluminum and the surface is

black anodized, both of which create an excellent heat

dissipation rate and insulating property, resulting in a higher

effective heat dissipation rate.

There are two types of heat sinks, ATHS-1/2/105/66/30A

and ATHS-1/2/105/66/30H4. The former is without any

holes, and the latter has four holes, as shown in Figure 1 and

Figure 2.

The heat sink’s thermal resistance is the most important

parameter when choosing a heat sink.

Once the maximum safe junction temperature for the

equipment (Tjmax) is known, the power is going to dissipate

(Pd) and the maximum ambient temperature will work at

(Tamb), thus the maximum total Rth (j-a) from this

expression:

Rth (j-a) = (Tjmax - Tamb)/Pd

From the manufacturer’s data, useful information such as

Rth (j-c) can be found, and the junction-case thermal

resistance of the power equipment itself. Then add the

thermal resistance of the thermal compound and/or insulating

washer, and this will provide the total junction to heat sink

resistance. Subtract this from the maximum Rth (j-a) figure,

and the maximum allowable heat sink resistance will be

achieved. Then select a heat sink which will provide no more

than this value of thermal resistance.

We can CUSTOMIZE a heat sink for you, with/without

holes. The width of the heat sink is fixed, however, the

length can be customized.