273-AB Wakefield Thermal Solutions, 273-AB Datasheet - Page 9
![HEATSINK TO-220 LOW HEIGHT BLK](/photos/5/88/58838/273-ab_sml.jpg)
273-AB
Manufacturer Part Number
273-AB
Description
HEATSINK TO-220 LOW HEIGHT BLK
Manufacturer
Wakefield Thermal Solutions
Series
273r
Specifications of 273-AB
Thermal Resistance
7.2 C / W
Height
0.375" (9.53mm)
Color
Black
Package Cooled
TO-220, TO-218
Attachment Method
Bolt On and PC Pin
Outline
19.05mm x 19.05mm
Power Dissipation @ Temperature Rise
2W @ 49°C
Thermal Resistance @ Forced Air Flow
7.2°C/W @ 400 LFM
Thermal Resistance @ Natural
24.5°C/W
Product
Heatsinks
Mounting Style
SMD/SMT
Heatsink Material
Aluminum
Fin Style
Folded
Dimensions
19.05 mm L x 9.53 mm W x 19.05 mm H
Designed For
TO-218, TO-220
Packages Cooled
TO-218 / TO-220
Width
19.1mm
Heat Sink Material
Aluminum
Length
19.1mm
Mounting Type
Screw
Size
0.75L X 0.375H X 0.750W"
Lead Free Status / RoHS Status
Lead free / RoHS Compliant
Lead Free Status / RoHS Status
Lead free / RoHS Compliant, Lead free / RoHS Compliant
Other names
345-1022
Available stocks
Company
Part Number
Manufacturer
Quantity
Price
Company:
Part Number:
273-AB
Manufacturer:
WAK
Quantity:
14 891
WTS001_p26-49
BOARD LEVEL POWER SEMICONDUCTOR HEAT SINKS
Material: Aluminum,
Black Anodized
MECHANICAL DIMENSIONS
30
Board Level
Heat Sinks
MECHANICAL DIMENSIONS
232-200AB
6/14/07
251-62AB
Standard
P/N
242-125ABE-22 1.285 (32.6)
Material: Aluminum, Black Anodized
Standard
P/N
232-200AB
232-200ABE-23 2.000 (50.8)
238-200AB
238-200ABE-23 2.000 (50.8)
Standard
P/N
251-62AB
251-80AB
251-80ABE-19
Material: Aluminum, Black Anodized
242 SERIES
251 SERIES
232 & 238 SERIES
242-125AB-22
10:55 AM
232-200AB-23
Height Above
Height Above
2.000 (50.8)
2.000 (50.8)
Height Above
.620 (15.7)
.845 (21.5)
.875 (22.2)
PC Board
PC Board
in. (mm)
in. (mm)
251-80AB
PC Board
in. (mm)
Page 30
MECHANICAL DIMENSIONS
Low-Height, Low-Profile Twisted Fin Heat Sinks
Slim-Profile Heat Sinks With Integral Clips
1.380 (35.1) x .500 (12.7)
1.380 (35.1) x .500 (12.7)
1.380 (35.1) x .500 (12.7)
1.380 (35.1) x .500 (12.7)
Staggered Fin Heat Sinks for Vertical Mounting
.875 (22.2) x .250 (6.4)
.910 (23.1) x .380 (9.7)
.910 (23.1) x .380 (9.7)
.910 (23.1) x .380 (9.7)
238-200AB
Dimensions
Dimensions
Dimensions
Footprint
in. (mm)
Footprint
Footprint
in. (mm)
in. (mm)
Dimensions: in. (mm)
Dimensions: in. (mm)
238 SERIES
251 SERIES
Configuration Tab Options
238-200AB-23
Configuration
Configuration
251-80AB-19
Vert./Horiz.
Vert./Horiz.
Mounting
Mounting
Mounting
Vertical
Vertical
Vertical
Verlical
Verlical
Vertical
242 SERIES
232 AND 238 SERIES
Dimensions: in. (mm)
Solderable
2, Solderable
2, Solderable
Tab Options
Tab Options
Solderable
Solderable
2, Twisted
2, Twisted
22
No Tab
No Tab
19
Mounting
Mtg Hole
Clip/Mtg Hole
Clip/Mtg Hole
Style
Mounting
Mounting
Mtg Slot
Mtg Slot
Style
Style
Clip
Clip
Clip
CONVECTION CHARACTERISTICS
48°C @ 2W
Convection
Thermal Performance at Typical Load
CONVECTION CHARACTERISTICS
CONVECTION CHARACTERISTICS
Natural
NATURAL AND FORCED
NATURAL AND FORCED
NATURAL AND FORCED
48°C @ 4W
48°C @ 4W
48°C @ 4W
48°C @ 4W
Convection
Convection
66°C @ 3W
64°C @ 3W
64°C @ 3W
Thermal Performance at Typical Load
Thermal Performance at Typical Load
Natural
Natural
6.2°C/W @ 400 LFM
3.3°C/W @ 400 LFM
3.3°C/W @ 400 LFM
3.3°C/W @ 400 LFM
3.3°C/W @ 400 LFM
66°C/W @ 400 LFM
66°C/W @ 400 LFM
66°C/W @ 400 LFM
Convection
Convection
Convection
15 Lead Multiwatt
Forced
Forced
TO-202, TO-220
Forced
TO-220