270-AB Wakefield Thermal Solutions, 270-AB Datasheet - Page 7
![HEATSINK TO-220 SM FOOTPRINT BLK](/photos/5/88/58832/270-ab_sml.jpg)
270-AB
Manufacturer Part Number
270-AB
Description
HEATSINK TO-220 SM FOOTPRINT BLK
Manufacturer
Wakefield Thermal Solutions
Series
270r
Specifications of 270-AB
Thermal Resistance
6 C / W
Height
0.375" (9.53mm)
Color
Black
Package Cooled
TO-220, TO-202
Attachment Method
Bolt On
Outline
44.45mm x 17.78mm
Power Dissipation @ Temperature Rise
4W @ 70°C
Thermal Resistance @ Forced Air Flow
6.0°C/W @ 400 LFM
Thermal Resistance @ Natural
17.5°C/W
Product
Heatsinks
Mounting Style
SMD/SMT
Heatsink Material
Aluminum
Fin Style
Folded
Dimensions
28.45 mm L x 11.05 mm W x 19.05 mm H
Designed For
TO-220, TO-202
Packages Cooled
TO-202 / TO-220
Width
17.8mm
Heat Sink Material
Aluminum
Length
44.5mm
Mounting Type
Screw
Size
1.75L X 0.375H X 0.530W"
Lead Free Status / RoHS Status
Lead free / RoHS Compliant
Lead Free Status / RoHS Status
Lead free / RoHS Compliant, Lead free / RoHS Compliant
Other names
345-1041
Available stocks
Company
Part Number
Manufacturer
Quantity
Price
WTS001_p26-49
BOARD LEVEL POWER SEMICONDUCTOR HEAT SINKS
28
Board Level
Heat Sinks
MECHANICAL DIMENSIONS
MECHANICAL DIMENSIONS
6/14/07
Standard
P/N
265-118ABHE-22
Material: Aluminum, Black Anodized
Standard
P/N
286DBE
Material: Aluminum, Black Anodized
265 SERIES
286DB SERIES
10:55 AM
Page 28
Vertical Mount Heat Sink
Vertical Mount Heat Sink
Height Above
Height Above
1.18 (30.0)
PC Board
PC Board
.95 (24.1)
in. (mm)
in. (mm)
1.00 (25.4) x .50 (12.7)
1.00 (25.4) x .50 (12.7)
Maximum
Maximum
Footprint
in. (mm)
Footprint
in. (mm)
100
80
60
40
20
100
0
80
60
40
20
0
0
0
0
0
Natural Convection
Natural Convection
CONVECTION CHARACTERISTICS
CONVECTION CHARACTERISTICS
56°C rise @ 4W
65°C rise @ 4W
200
200
200
200
2
2
NATURAL AND FORCED
NATURAL AND FORCED
HEAT DISSIPATED (WATTS)
HEAT DISSIPATED (WATTS)
Thermal Performance at Typical Load
Thermal Performance at Typical Load
AIR VELOCITY (LFM)
AIR VELOCITY (LFM)
400
400
400
400
4
4
600
600
600
600
6
6
800
800
800
800
8
8
7.0°C/W @ 200LFM
9.0°C/W @ 200LFM
Forced Convection
Forced Convection
1000
1000
1000
1000
10
10
10
8
6
4
2
0
10
8
6
4
2
0
TO-220
TO-220