218-40CT3 Wakefield Thermal Solutions, 218-40CT3 Datasheet - Page 7

• 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 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