m sink 181230

m sink 181230
M Series Heatsinks
Heatsink with clips for TO-264 and TO-247
F e at u r e s
Ohmite introduces the M series, patented (Pat. No.
7,151,669), high performance, low cost, configurable, scalable and compact heat sink with matrix clip
system for TO-247 and TO-264 packages. This powerful heat sink provides the easiest assembly, largest
surface area and smallest footprint. It is the ideal
type of heat sink for high power density and small
size (1U or 2U) electronic packaging with forced convection cooling.
•Minimum assembly cost and labor. Spring Clips
make the mounting holes and fasteners obsolete in
assembly operations & reduce costs.
•Maximum Thermal Transfer. Maximum surface area
per unit volume, efficient cooling fins & consistent
mounting force reduces thermal resistance
•Maximum Repeatability. Constant spring force over
repeated assembly/disassembly
•Maximum Reliability. Resilient spring action locks
electronic component in place. Fewer parts in
assembly and no fasteners and washers required.
Prevent short circuit by eliminating metal particles
generated from hardware or thread tapping
•Design Flexibility. Maximum flexibility for dynamic
device locations and power up grading. “Configureto-Fit” & “Scale-to-Meet” options give designers the
total freedom to configure the heat sink to fit their
packaging designs and to scale the heat sink to
meet their power dissipations.
s e r i e s s p e c i f i c at i o n s
Thermal
Surface Area
Weight Resistance
Part No.
(in2/mm2)
(oz./g) (°c/w)*
MV-102-55E 45 / 29,097 2.2 / 63
6.0
MA-102-55E 45 / 29,097 2.2 / 63
5.2
MV-101-27E 22 / 14,284 1.1 / 31
9.6
MA-101-27E 22 / 14,284 1.1 / 31
8.0
MV-302-55E 76 / 49,218 4.7 / 134
3.6
MA-302-55E 76 / 49,218 4.7 / 134
3.0
MV-301-27E 37.3 / 24,161 2.3 / 66
5.5
MA-301-27E 37.3 / 24,161 2.3 / 66
4.6
* R-thetac-a for 18W dissipation total for two devices in natural convection
C h a r a c t e r i s t i cs
Heat Sink 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.
Interface thermal resistance Thermal joint compound or 0.005 Grafoil (TGon 800 by Laird)
Interface electrical isolation Sil-Pad 900S by Bergquist or equivalent
(continued)
1-866-9-OHMITE • Int’l 1-847-258-0300 • Fax 1-847-574-7522 • www.ohmite.com • info@ohmite.com
177
M Series Heatsinks
Heatsink with clips for TO-264 and TO-247
H e a t D i ss i p a t i o n
For two devices
Air Velocity (ft./min.)
0
200
400
600
800
1000
1200
7
120
6
100
5
80
4
60
3
40
2
20
1
0
Thermal Resistance from Case
to Ambient (°C/watts)
Case Temp. Rise above Ambient (°C)
140
MA-101-27
MA-301-27
MA-102-55
MA-302-55
0
0
10
20
30
40
Heat Dissipated, total for two devices (watts)
50
dimensions
ø 0.07"
(1.8mm)
2.20" (55.8mm)
CL
user defined values
CL
Y
X
1.34" (34.1mm)
1.52"
(38.6mm)
-102-55E
-101-27E
0.83"
(21.1mm)
0.95" ±.025
(24.1mm)
1.71"
(43.5mm)
V
-55E
W
ø 0.07"
(1.8mm)
4x
ø 0.10"
(2.5mm)
Z
W
CL
X
0.14"
(3.6mm)
0.84"
(21.3mm)
0.16"
(4.2mm)
2.01" (51mm)
2.17" (55mm)
0.08"
(2.0mm)
1.04" ±.025
(26.4mm)
V
Z*
MV-102-55E 1.35" / 34.3
MA-102-55E
MA-101-27E
MA-101-27E
W
0.95" / 24.1
0.18" / 4.6
MV-302-55E 2.20" / 55.9
MA-302-55E
MA-301-27E
MA-301-27E
1.04" / 26.4
0.21" / 5.3
0.08"
(2.0mm)
RoHS Compliant
MV-102-55E
0.90"
(22.9mm)
1.06" (27mm)
*Device package
dimensions can
vary. Customer
should verify
this dimension.
Series Finish
A = black anodized
V = degreased
Length
(mm)
Standard Part Numbers
Part Number Description
Packaging
MV-102-55E 55mm No finish (degreased) Bulk
MA-102-55E 55mm Black anodized
Bulk
MV-101-27E 27mm No finish (degreased) Bulk
MA-101-27E 27mm Black anodized
Bulk
MV-302-55E 55mm No finish (degreased) Bulk
MA-302-55E 55mm Black anodized
Bulk
MV-301-27E 27mm No finish (degreased) Bulk
MA-301-27E 27mm Black anodized
Bulk
1-866-9-OHMITE • Int’l 1-847-258-0300 • Fax 1-847-574-7522 • www.ohmite.com • info@ohmite.com
V
Z
how to order
No. of clips
4x
ø 0.10"
(2.5mm)
-27E
-302-55E
-301-27E
Part Number
178
user
defined
value
Mouser Electronics
Authorized Distributor
Click to View Pricing, Inventory, Delivery & Lifecycle Information:
Ohmite:
MA-102-55E MV-102-55E
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