218-40CT3 Wakefield Thermal Solutions, 218-40CT3 Datasheet - Page 10

• Manufacturer Part Number: 218-40CT3
• Description: HEATSINK ALUM BLACK SMD
• Manufacturer: Wakefield Thermal Solutions
• Series: 218r

Specifications of 218-40CT3

• Thermal Resistance: 21 C / W
• Height: 0.4" (10.16mm)
• Package Cooled: SMD
• Attachment Method: SMD Pad
• Outline: 22.86mm x 8.12mm
• Power Dissipation @ Temperature Rise: 2W @ 52°C
• Thermal Resistance @ Forced Air Flow: 21°C/W @ 200 LFM
• Thermal Resistance @ Natural: 31°C/W
• Product: Heatsinks
• Mounting Style: SMD/SMT
• Heatsink Material: Aluminum
• Fin Style: Folded
• Dimensions: 22.86 mm L x 8 mm W x 10.16 mm H
• Designed For: SMT Devices
• Packages Cooled: TO-218 / TO-220
• Width: 22.9mm
• Heat Sink Material: Copper
• Mounting Type: PC Board Surface Mount
• Length: 8mm
• Body Plating: Matte Tin
• Lead Free Status / RoHS Status: Contains lead / RoHS non-compliant
• Lead Free Status / RoHS Status: Contains lead / RoHS non-compliant
• Other names: 21840CT3; 345-1082

WTS001_p26-49
BOARD LEVEL HEAT SINKS FOR TO-220, TO-218 AND M
Dimensions: in. (mm)
Dimensions: in. (mm)
Dimensions: in. (mm)
MECHANICAL DIMENSIONS
MECHANICAL DIMENSIONS
MECHANICAL DIMENSIONS
6/14/07
10:55 AM
Standard
P/N
244-145AB
244-145ABE-50 1.650 (41.9)
Material: Aluminum, Black Anodized
Standard
P/N
245-145AB
245-145ABE-50 1.650 (41.9)
Material: Aluminum, Black Anodized
Standard
P/N
246-197AB
246-197ABE-50 2.168 (55.1)
Order SpeedClip™ 285SC or 330SC separately. (See 248 Series section).
Material: Aluminum, Black Anodized
244 SERIES
245 SERIES
246 SERIES
Page 31
Height Above
Height Above
Height Above
1.450 (36.8)
1.450 (36.8)
1.968 (50.0)
PC Board
in. (mm)
PC Board
in. (mm)
PC Board
in. (mm)
Low Height, Slim Profile Wavesolderable Folded Fin Heat Sinks
Low Height, Slim Profile Wavesolderable Folded Fin Heat Sinks
Medium Height, Slim Profile Wavesolderable Folded Fin Heat Sinks
1.300 (33.0) x 480 (12.1)
1.300 (33.0) x 480 (12.1)
1.750 (44.5) x .380 (9.7)
1.750 (44.5) x .380 (9.7)
1.986 (50.4) x 3.75 (9.5)
1.986 (50.4) x 3.75 (9.5)
Dimensions
Dimensions
Dimensions
Footprint
Footprint
Footprint
in. (mm)
in. (mm)
in. (mm)
Configuration
Configuration
Configuration
Ver.t/Horiz.
Vert./Horiz.
Vert/Horiz,
Mounting
Mounting
Mounting
Vertical
Vertical
Vertical
Tab Options
Tab Options
Tab Options
Solderable
Solderable
Solderable
No Tab
No Tab
No Tab
50
50
50
ULTIWATT
Thermal Performance at Typical Load
Thermal Performance at Typical Load
Thermal Performance at Typical Load
44°C @ 4W
44°C @ 4W
38°C @ 4W
38°C @ 4W
35°C @ 4W
35°C @ 4W
Convection
Convection
Convection
Natural
Natural
Natural
™ COMPONENTS
4.4°C/W @ 400 LFM
4.4°C/W @ 400 LFM
3.2°C/W @ 400 LFM
3.2°C/W @ 400 LFM
2.8°C/W @ 400 LFM
2.8°C/W @ 400 LFM
Convection
Convection
Convection
Forced
Forced
Forced
Board Level
Heat Sinks
MULTIWATT
MULTIWATT
MULTIWATT
.0240 (10.90)
.0250 (11.40)
lbs. (grams)
.0160 (7.25)
.0170 (7.20)
lbs. (grams)
.0160 (7.25)
.0170 (7.20)
lbs. (grams)
Weight
Weight
Weight
31