C40 Heat Sink System
For TO-247, TO-264 and SOT-227 Packages
Single
Mounting
The C40 Series Heat Sink System (Patent Pending)
offers flexible, high performance and compact heat
sinks with an exchangeable cam clip system for TO-
247, TO-264 and SOT-227 (clip in development)
devices. This powerful heat sink can be thru-hole
soldered in single or paired configurations. The paired
unit has mounting holes to accomodate a 40mm x
40mm fan. It is the ideal type of heat sink for high
power density and small size (1U or 2U) electronic
packaging with forced convection.
Paired Heat
Sink Mounting
With a FAN
SꢂrꢃꢂS SPꢂCꢃFꢃCꢀꢁꢃONS
Heatsink
Surface Area
(in2 / mm2)
Weight Length L
consult factory for
alternate lengths and
clip combinations
Part Number
C40-058-VE
C40-058-AE
(oz / g)
(mm)
63.8 / 41,180
2.5/ 71
58
CHꢀrꢀCꢁꢂrꢃSꢁꢃCS
Aluminum Alloy 6063-T5 or Equivalent with either degreased or black
anodized finish.
Heat Sink
Heat Dissipation
3
2.5
2
Music Wire, Per ASTM A228 with bright nickel plating
Spring Clip
Solder Foot
Cold-rolled Steel, Per ASTM A-366 with pure tin over copper strike.
RoHS compliant.
4 devices
40mm fan with 4 self-tapping M3 screws
Fan
1.5
1
For improvement, use thermal joint compound, 0.005 Grafoil (TGon
800 by Laird), or phase change material (Hi-Flow by Bergquist)
Insulator (Optional) Sil-Pad 900-S, K6 800-S and K10 by Bergquist
Interface Thermal
Resistance
2 devices
0.5
0
0
10
20
30
Fan Flow Rate (cfm)
(continued)
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