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.