290-2AB Wakefield Thermal Solutions, 290-2AB Datasheet - Page 12

• Manufacturer Part Number: 290-2AB
• Description: HEATSINK TO-220 DUAL MNT BLK
• Manufacturer: Wakefield Thermal Solutions
• Series: 290r

Specifications of 290-2AB

• Thermal Resistance: 7 C / W
• Height: 0.500" (12.70mm)
• Color: Black
• Package Cooled: TO-218, TO-202, TO-220
• Attachment Method: Bolt On and PC Pin
• Outline: 30.00mm x 25.40mm
• Power Dissipation @ Temperature Rise: 2W @ 44°C
• Thermal Resistance @ Forced Air Flow: 35.0°C/W @ 400 LFM
• Thermal Resistance @ Natural: 22°C/W
• Product: Heatsinks
• Mounting Style: SMD/SMT
• Heatsink Material: Aluminum
• Fin Style: Folded
• Dimensions: 25.4 mm L x 12.7 mm W x 29.97 mm H
• Designed For: TO-218, TO-202, TO-220
• Packages Cooled: TO-202 / TO-218 / TO-220
• Width: 30mm
• Heat Sink Material: Aluminum
• Length: 25.4mm
• Mounting Type: Screw
• Package / Case: TO-218/TO-202/TO-220
• Lead Free Status / RoHS Status: Lead free / RoHS Compliant
• Lead Free Status / RoHS Status: Lead free / RoHS Compliant, Lead free / RoHS Compliant
• Other names: 345-1021

WTS001_p26-49
BOARD LEVEL POWER SEMICONDUCTOR HEAT SINKS
MECHANICAL DIMENSIONS
Dimensions: in. (mm)
MECHANICAL DIMENSIONS
Dimensions: in. (mm)
6/14/07
10:55 AM
This top-hat style booster heat sink can be added to any of the 270, 272, or 280
Series for improved performance.
Standard
P/N
288-1ABE
Mounting tabs are pre-tinned to ensure excellent wave-solder bond and good
electrical connections for vertical mounting of TO-220 and TO-202 semiconduc-
tor packages. These heat sinks are designed for use where minimum PC board
Standard
P/N
271-AB
Material: Aluminum, Black Anodized
288 SERIES
271 SERIES
Page 33
Semiconductor Case
Height Above
0.500 (12.7)
Compact Wave-Solderable Low-Cost Heat Sinks
Top-Mount Booster Heat Sinks for Use with 270/272/280 Series
in. (mm)
Height Above
1.250 (31.8)
PC Board
in. (mm)
1.750 (44.5) x 0.700 (17.8)
288 SERIES
Mounting Footprint
271 SERIES
Dimensions
Horizontal
in. (mm)
0.875 (22.2) x 0.215 (5.5)
Maximum
Footprint
in. (mm)
31 °C @ 4W (NOTE B)
62°C @ 4W (NOTE A)
space is available. The 288-1AB is a stamped aluminum heat sink, black an-
odized, designed for applications requiring good heat dissipation from a heat
sink occupying minimum space, available at minimum cost.
NOTE A: Thermal resistance with one 271-AB. NOTE B: Thermal resistance
(total) as shown with (2) 271-AB types added to (1) 272-AB type.
Convection
Thermal Performance at Typical Load
Natural
Thermal Performance at Typical Load
85°C @ 4W
Convection
Natural
CONVECTION CHARACTERISTICS
CONVECTION CHARACTERISTICS
NATURAL AND FORCED
NATURAL AND FORCED
1.8°C/W 400 LFM (NOTE B)
5.1°C/W @ 400 LFM
12°C/W @ 200 LFM
Convection
Forced
Convection
Forced
Board Level
Heat Sinks
TO-220, TO-202
0.0057 (2.59)
0.0052 (2.36)
lbs. (grams)
lbs. (grams)
Weight
TO-220
Weight
33