MA-301-27E [OHMITE]
Heatsink with clips for TO-264 and TO-247;
| 型号： | MA-301-27E |
| 厂家： | 
OHMITE MFG. CO. |
| 描述： | Heatsink with clips for TO-264 and TO-247 |
| 文件： | 总2页 (文件大小：366K) |
| 中文： | 中文翻译 | 下载： | 下载PDF数据表文档文件 |
M Series Heatsinks
Heatsink with clips for TO-264 and TO-247
F ꢀ ꢁꢂ u ꢃ ꢀ S
•ꢀMinimumꢀassemblyꢀcostꢀandꢀlabor.ꢀSpringꢀClipsꢀ
makeꢀtheꢀmountingꢀholesꢀandꢀfastenersꢀobsoleteꢀinꢀ
assemblyꢀoperationsꢀ&ꢀreduceꢀcosts.
•ꢀMaximumꢀThermalꢀTransfer.ꢀMaximumꢀsurfaceꢀareaꢀ
perꢀunitꢀvolume,ꢀefficientꢀcoolingꢀfinsꢀ&ꢀconsistentꢀ
mountingꢀforceꢀreducesꢀthermalꢀresistance
•ꢀMaximumꢀRepeatability.ꢀConstantꢀspringꢀforceꢀoverꢀ
repeatedꢀassembly/disassemblyꢀ
•ꢀMaximumꢀReliability.ꢀResilientꢀspringꢀactionꢀlocksꢀ
electronicꢀcomponentꢀinꢀplace.ꢀFewerꢀpartsꢀinꢀ
assemblyꢀandꢀnoꢀfastenersꢀandꢀwashersꢀrequired.ꢀ
Preventꢀshortꢀcircuitꢀbyꢀeliminatingꢀmetalꢀparticlesꢀ
generatedꢀfromꢀhardwareꢀorꢀthreadꢀtapping
•ꢀDesignꢀFlexibility.ꢀMaximumꢀflexibilityꢀforꢀdynamicꢀ
deviceꢀlocationsꢀandꢀpowerꢀupꢀgrading.ꢀ“Configure-
to-Fit”ꢀ&ꢀ“Scale-to-Meet”ꢀoptionsꢀgiveꢀdesignersꢀtheꢀ
totalꢀfreedomꢀtoꢀconfigureꢀtheꢀheatꢀsinkꢀtoꢀfitꢀtheirꢀ
packagingꢀdesignsꢀandꢀtoꢀscaleꢀtheꢀheatꢀsinkꢀꢀtoꢀ
meetꢀtheirꢀpowerꢀdissipations.
OhmiteꢀintroducesꢀtheꢀMꢀseries,ꢀꢀpatentedꢀ(Pat.ꢀNo.ꢀ
7,151,669),ꢀhighꢀperformance,ꢀlowꢀcost,ꢀconfigu-
rable,ꢀscalableꢀandꢀcompactꢀheatꢀsinkꢀwithꢀmatrixꢀclipꢀ
systemꢀforꢀTO-247ꢀandꢀTO-264ꢀpackages.ꢀThisꢀpow-
erfulꢀheatꢀsinkꢀprovidesꢀtheꢀeasiestꢀassembly,ꢀlargestꢀ
surfaceꢀareaꢀandꢀsmallestꢀfootprint.ꢀItꢀisꢀtheꢀidealꢀ
typeꢀofꢀheatꢀsinkꢀforꢀhighꢀpowerꢀdensityꢀandꢀsmallꢀ
sizeꢀ(1Uꢀorꢀ2U)ꢀelectronicꢀpackagingꢀwithꢀforcedꢀcon-
vectionꢀcooling.
SꢀꢃꢄꢀS SpꢀCꢄFꢄCꢁꢂꢄoꢅS
Thermal
Weight Resistance
Surface Area
Part No.
(in2/mm2)
(oz./g)
(°c/w)*
6.0
5.2
9.6
8.0
MV-102-55E 45 / 29,097
MA-102-55E 45 / 29,097
MV-101-27E 22 / 14,284
MA-101-27E 22 / 14,284
2.2 / 63
2.2 / 63
1.1 / 31
1.1 / 31
MV-302-55E 76 / 49,218 4.7 / 134
MA-302-55E 76 / 49,218 4.7 / 134
MV-301-27E 37.3 / 24,161 2.3 / 66
MA-301-27E 37.3 / 24,161 2.3 / 66
3.6
3.0
5.5
4.6
* R-theta
c-a
for 18W dissipation total for two devices in natural convection
CHꢁꢃꢁCꢂꢀꢃꢄSꢂꢄCS
Aluminum Alloy 6063-T5 or Equivalent with either degreased or black anodized
finish.
Heat Sink
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 com-
pliant.
Thermal joint compound or 0.005 Grafoil (TGon 800 by Laird)
Sil-Pad 900S by Bergquist or equivalent
Interface thermal resistance
Interface electrical isolation
(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
Hꢀꢁꢂ DꢄSSꢄpꢁꢂꢄoꢅ
Air Velocity (ft./min.)
Forꢀtwoꢀdevicesꢀ
0
200
400
600
800
1000
1200
140
120
100
80
7
6
5
4
3
2
1
0
MA-101-27
MA-301-27
MA-102-55
MA-302-55
60
40
20
0
0
10
20
30
40
50
Heat Dissipated, total for two devices (watts)
DꢄMꢀꢅSꢄoꢅS
user
defined
value
X
user defined values
ø 0.07"
(1.8mm)
ø 0.07"
(1.8mm)
C
L
C
L
C
L
ꢀ.ꢀ0" (55.8mm)
4x
ø 0.10"
(2.5mm)
4x
ø 0.10"
(2.5mm)
Y
X
1.34" (34.1mm)
1.2ꢀ"
(38.6mm)
V
Z
V
Z
1.71"
(43.5mm)
-55E
-27E
W
W
-102-55E
-101-27E
-302-55E
-301-27E
0.84"
0.90"
0.16"
(4.2mm)
0.83"
(21.3mm)
2.01" (51mm)
2.17" (55mm)
0.14"
(3.6mm)
0.08"
(2.0mm)
0.08"
(2.0mm)
(22.9mm)
(21.1mm)
1.06" (27mm)
1.04" .0ꢀ2
(26.4mm)
0.92" .0ꢀ2
(24.1mm)
Part Number
W
V
Z*
MV-102-55E
MA-102-55E
MA-101-27E
MA-101-27E
1.35" / 34.3
0.95" / 24.1
0.18" / 4.6
*Device package
dimensions can
vary. Customer
should verify
MV-302-55E
MA-302-55E
MA-301-27E
MA-301-27E
2.20" / 55.9
1.04" / 26.4
0.21" / 5.3
this dimension.
How ꢂo oꢃDꢀꢃ
Standard Part Numbers
No. of clips RoHS Compliant
Part Number Description
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
Packaging
M V - 1 0 2 - 5 5 E
Series Finish
A = black anodized
V = degreased
Length
(mm)
1-866-9-OHMITE • Int’l 1-847-258-0300 • Fax 1-847-574-7522 • www.ohmite.com • info@ohmite.com
178
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