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E2A-T247-38E

P1-P2
1-866-9-OHMITE • Int’l 1-847-258-0300 • Fax 1-847-574-7522 • www.ohmite.com • info@ohmite.com
172
EX Series Heatsinks
For TO-220 and TO-247 devices and bridge rectifiers
For Ohmite Surface Thermal
Heatsink Package Resistor Area Weight Resistance*
Part Number Type Series (in
2
/mm
2
) (oz./g) (°C/W)
E2A-T220-38E TO-220 TBH, TCH 7.96 / 5129 0.40 / 11.21 14.0
E2A-T220-25E TO-220 TBH, TCH 5.30 / 2419 0.26 / 7.5 16.4
E2A-T247-38E TO-247 TEH100 7.95 / 5129 0.40 / 11.21 14.0
E3A-T220-25E D34 9.4 / 6064 0.60 / 17.0 12.4
*Natural convection at 5W dissipation
Heat Dissipation
Heat sink
Aluminum 6063-T5 or equiv-
alent with either black anod-
ized or degreased finish
Solder feet
steel tin plated
Interface
thermal
resistance
for improvement, use thermal
joint compound or 0.005
Grafoil (TGon 800 by Laird)
Interface
electrical
isolation
Sil-Pad 900S by Bergquist or
equivalent
FEATURES
•Verticalthrough-holePCBmounting
•E3A-T220-25Ehasa8-32threadedmountinghole
forabridgerectifierinaD34typesquarepackage
•Thethickenedsidefinscanbeusedtosecurethe
heatsinktoasidewallortomountTO-220"s
•Threadedmountingholes
CHARACTERISTICS
SERIES SPECIFICATIONS
(continued)
300100 200 600400 500 900700 800
50
Heat Dissipated (watts)
30
10
0
210 543 8 976
40
20
10
100
0 1000
Air Velocity (ft./min.)
60
90
70
80
5
3
1
0
4
2
10
6
9
7
8
Thermal Resistance from Mounting
Surface to Ambient (°C/watts)
Mounting Surface Temp. Rise
above Ambient (°C)
E2A-T220-25AE
E2A-T220-38AE
E2A-T247-38AE
E3A-T220-25AE
1-866-9-OHMITE • Int’l 1-847-258-0300 • Fax 1-847-574-7522 • www.ohmite.com • info@ohmite.com
173
EX Series Heatsinks
For TO-220 and TO-247 devices and bridge rectifiers
DIMENSIONS
in. (mm)
ORDERING INFORMATION
E2A-T220-38E
Series
EX
Height
Extrusion type
Package
type
RoHS Compliant
Finish
A = anodized
0.64"
(16.3mm)
0.64"
(16.3mm)
0.136" ±.010
(3.45mm ±.25)
1.00"
(25.4mm)
#6-32 thread thru Tin-plated steel pins
0.72"
(18.3mm)
0.156"
(4.0mm)
0.40"
(10.2mm)
0.160" REF.
0.090"
(2.3mm)
0.64"
(16.3mm)
0.64"
(16.3mm)
0.136" ±.010
(3.45mm ±.25)
1.50"
(38.1mm)
1.50"
(38.1mm)
#6-32 tap thru Tin-plated steel pins
0.72"
(18.3mm)
0.156"
(4.0mm)
0.40"
(10.2mm)
0.160" REF.
0.090"
(2.3mm)
0.64"
(16.3mm)
0.64"
(16.3mm)
0.136" ±.010
(3.45mm ±.25)
1.500"
(38.1mm)
#6-32 tap thru
0.850"
(21.6mm)
0.156"
(4.0mm)
0.40"
(10.2mm)
0.090"
(2.3mm)
0.320"
ø0.164" hole
#8-32 UNC-2B thread, thru
0.50"
(12.7mm)
0.50"
(12.7mm)
1.00"
(25.4mm)
1.00"
(25.4mm)
1.00"
(25.4mm)
E2A-T220-38E
E2A-T220-25E
E2A-T247-38E
E3A-T220-25E
P1-P2

E2A-T247-38E

Mfr. #:
Buy E2A-T247-38E
Manufacturer:
Ohmite
Description:
Heat Sinks Black Anodized Heatsink for T247
Lifecycle:
New from this manufacturer.
Delivery:
DHL FedEx Ups TNT EMS
Payment:
T/T Paypal Visa MoneyGram Western Union

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