680-125A Wakefield Thermal Solutions, 680-125A Datasheet - Page 4

• Manufacturer Part Number: 680-125A
• Description: HEATSINK POWER TO-3 BLK
• Manufacturer: Wakefield Thermal Solutions
• Series: 680r

Specifications of 680-125A

• Thermal Resistance: 1.5 C / W
• Height: 1.250" (31.7mm)
• Color: Black
• Package Cooled: TO-3
• Attachment Method: Bolt On
• Outline: 45.97mm x 45.97mm
• Power Dissipation @ Temperature Rise: 8W @ 45°C
• Thermal Resistance @ Forced Air Flow: 1.5°C/W @ 400 LFM
• Thermal Resistance @ Natural: 6°C/W
• Product: Heatsinks
• Mounting Style: SMD/SMT
• Heatsink Material: Aluminum
• Fin Style: Omnidirectional Pin
• Dimensions: 46 mm L x 46 mm W x 31.8 mm H
• Designed For: TO-3, TO-220
• Packages Cooled: TO-3 / TO-220
• Width: 46mm
• Heat Sink Material: Aluminum
• Length: 46mm
• Mounting Type: PC Board Through Hole
• Size: 1.250H X 1.810W X 1.810L"
• Lead Free Status / RoHS Status: Lead free / RoHS Compliant
• Lead Free Status / RoHS Status: Lead free / RoHS Compliant, Lead free / RoHS Compliant
• Other names: 345-1051

WTS001_p1-25
BOARD LEVEL POWER SEMICONDUCTOR HEAT SINKS
6/14/07
MECHANICAL DIMENSIONS
10:54 AM
Standard
P/N
241-69ABE-03
Material: Aluminum, Black Anodized
Standard
P/N
262-75ABE-05
262-75ABE-01
Material: Aluminum, Black Anodized
262 SERIES
241 SERIES
MECHANICAL DIMENSIONS
Page 25
Horizontal and Vertical Mount Heat Sink
Horizontal Mount Heat Sink
Height Above
Height Above
PC Board
in. (mm)
PC Board
.53 (13.4)
.75 (19.1)
.39 (9.9)
in. (mm)
.75 (19.1) x .50 (12.78)
.86 (21.8) x .69 (17.5)
.53 (13.4) 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
CONVECTION CHARACTERISTICS
CONVECTION CHARACTERISTICS
200
200
200
200
Natural Convection
1
Natural Convection
1
NATURAL AND FORCED
NATURAL AND FORCED
77°C rise @ 4W
80°C rise @ 2W
80°C rise @ 2W
HEAT DISSIPATED (WATTS)
HEAT DISSIPATED (WATTS)
AIR VELOCITY (LFM)
AIR VELOCITY (LFM)
400
400
400
400
2
Thermal Performance at Typical Load
2
Thermal Performance at Typical Load
600
600
600
600
3
3
800
800
4
800
800
4
1000
1000
5
1000
1000
5
Forced Convection
12°C/W @ 200LFM
Board Level
10°C/W @ 200LFM
10°C/W @ 200LFM
Forced Convection
20
18
16
14
12
10
8
6
4
2
0
Heat Sinks
10
8
6
4
2
0
TO-220
TO-220
25