Ohmite C40 Heat sink system Datasheet

C40 Heat Sink System
For TO-247, TO-264 and SOT-227 Packages
The C40 Series Heat Sink System (Patent Pending)
offers flexible, high performance and compact heat
sinks with an exchangeable cam clip system for TO247, 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.
Single
Mounting
Paired Heat
Sink Mounting
With a FAN
S ERIE S S P E C I F I C ATI O N S
Heatsink
Surface Area
Weight
Part Number
(in2 / mm2)
(oz / g)
C40-058-VE
63.8 / 41,180
2.5/ 71
C40-058-AE
Length L
(mm)
consult factory for
alternate lengths and
clip combinations
58
ch a r a c t e r i s t i cs
Aluminum Alloy 6063-T5 or Equivalent with either degreased or black
anodized finish.
Spring Clip
Music Wire, Per ASTM A228 with bright nickel plating
Solder Foot
Cold-rolled Steel, Per ASTM A-366 with pure tin over copper strike.
RoHS compliant.
Fan
40mm fan with 4 self-tapping M3 screws
Interface Thermal For improvement, use thermal joint compound, 0.005 Grafoil (TGon
Resistance 800 by Laird), or phase change material (Hi-Flow by Bergquist)
Insulator (Optional) Sil-Pad 900-S, K6 800-S and K10 by Bergquist
Heat Dissipation
3
Thermal Resistance from Case to
Ambient per Device (°C/watts)
Heat Sink
2.5
4 devices
2
1.5
2 devices
1
0.5
0
0
10
20
Fan Flow Rate (cfm)
30
(continued)
1-866-9-OHMITE • Int’l 1-847-258-0300 • Fax 1-847-574-7522 • www.ohmite.com • [email protected]
169
C40 Heat Sink System
For TO-247, TO-264 and SOT-227 Packages
d i m e ns i ons
Single Mounting
L
1.26"
(32.0mm)
0.47"
(12mm)
1.82"
(46.3mm)
1.18"
(29.9mm)
1.72"
(43.8mm)
2x 0.08"
(2.0mm)
Back-to-back Configuration
(This configuration can accept a 40x40mm fan)
1.26"
(32mm)
L – 0.16"
(0.16mm)
0.10"
(2.5mm)
1.82"
(46.3mm)
1.18"
(29.9mm)
0.79"
(20mm)
1.37"
(34.7mm)
0.10"
(2.6mm)
2.52"
(64.0mm)
Clip Dimensions
0.43"
(11mm)
0.78"
(19.8mm)
W +0.12"
(+3.0mm)
W
1.39" REF
(35.3mm)
6x ø
0.07" pth
(1.8mm)
L
L – 0.16"
(0.16mm)
0.58"
(14.6mm)
L
LAND
PATTERN
Y
LAND
PATTERN
L – 0.16"
(0.16mm)
X
"W"
T247 0.63" (16.1mm)
T264 0.80" (20.2mm)
2x 0.08"
(2.0mm)
2x ø
2x 0.08"
0.18"
(2.0mm) 0.11" pth (4.06mm)
(2.8mm)
2x 0.18"
(4.06mm)
4x ø 0.11" pth
(2.8mm)
ho w t o o r d e r
Heatsink
Clip
C40-058-AE
170
Length
(mm)
RoHS compliant
Finish
A = black anodized
V = degreased
CLA-T247-21E
Clip series
Y
X
NOTE: Due to possible screw torquing on long extrusions, Customer
should check for coplanarity prior to final assembly or soldering.
Series
2x 0.10"
(2.5mm)
Standard
Device type
RoHS
T247 = TO-247 configuration compliant
T264 = TO-264
S227 = SOT-227
(in development)
1-866-9-OHMITE • Int’l 1-847-258-0300 • Fax 1-847-574-7522 • www.ohmite.com • [email protected]
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