M Series Heatsinks
1.34"
(34.1mm)
Heatsink with two clips for TO-264 and TO-247
1.52"
(38.6mm)
Ohmite introduces the M
series, patented (Pat. No.
7,151,669), high performance,
low cost, configurable, scal-
able and compact heat sink
with matrix clip system for
TO-247 and TO-264 pack-
ages. This powerful heat sink
provides the easiest assembly,
largest surface area and small-
est 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.
feaTures
•
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 reduc-
es 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 hard-
ware or thread tapping
•
Design Flexibility.
Maximum
flexibility for dynamic device
locations and power up grading.
“Configure-to-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 dissipa-
tions.
specificaTiOns
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 com-
pliant.
Insulator:
(Optional) Sil-Pad 900-
S, K6 800-S and K10
0.83"
(21.1mm)
0.95"
(24.1mm)
0.14"
(3.6mm)
part no.
MV-102-55e
Ma-102-55e
surface area
(in
2
/mm
2
)
45 / 29,097
45 / 29,097
Weight
(oz./g)
2.2 / 63
2.2 / 63
Thermal
resistance
(°c/w)*
2.0
2.0
* Forced convection @200 LFM
Land paTTern
ø 0.07"
(1.8mm)
C
L
HeaT dissipaTiOn
user defined values
C
L
(L = 1.8 in)
4x
ø 0.10"
(2.5mm)
Case Temp. Rise above
Ambient (°C)
50
45
40
200
Air Velocity (ft./min.)
400
600
800
1000
5
Thermal Resistance from Mounting
Surface to Ambient (°C/watts)
Y
X
4
3
35
2
30
25
1
1.35"
(34.3mm)
0.95"
(24.1mm)
0.08"
(2.0mm)
2.01"
(51mm)
2.17"
(55mm)
2x
0.18"
(4.6mm)
20
4
8
12
16
Heat Dissipated (watts)
20
0
S TA N D A R D pA RT N u m b e R S F O R m S e R I e S
part number
MV-102-55E
MA-102-55E
description
Degreased
Black anodized
packaging
Bulk
Bulk
O R D e R I N g I N F O R m AT I O N
No. of clips
RoHS Compliant
MV-102-55E
Series Finish
A = black anodized
V = degreased
Length
(mm)
check product availability
using the Worldwide inventory
search at ohmite.com
Ohmite Mfg. Co.
1600 Golf Rd., Rolling Meadows, IL 60008 • 1-866-9-OHMITE • Int’l 1-847-258-0300 • Fax 1-847-574-7522 • www.ohmite.com • info@ohmite.com
1
OHMITE [ OHMITE MFG. CO. ]
