680-125A Wakefield Thermal Solutions, 680-125A Datasheet - Page 2

• 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
217 SERIES
MECHANICAL DIMENSIONS
Dimensions: in.
217 SERIES
TUBE: 16.25 Inches Long,
20 Pieces per Tube
6/14/07
MECHANICAL DIMENSIONS
Min. ESD Material with Nail
Stops
TUBE DETAILS
217-36CTT6
10:54 AM
218-40CT3
Surface Mount Heat Sinks
Standard
P/N
218-40CTE3
218-40CTE5
Material: Copper, Matte Tin Plated
218 SERIES
Page 23
REF: JEDEC TO-263 (DD PAK)
REF: JEDEC MO-169 (DD PAK)
Surface Mount Heat Sink
BOARD LAYOUT RECOMMENDATIONS
Height Above
PC Board
.40 (10.2)
.40 (10.2)
in. (mm)
218-40CT5
1.03 (26.2) x .50 (12.7)
.90 (22.9) x .315 (8.0)
Maximum
Footprint
in. (mm)
SOL 20
100
80
60
40
20
0
Solid line = 218-40CT5
0
0
200
200
CONVECTION CHARACTERISTICS
0.5
Natural Convection
62°C rise @ 2W
62°C rise @ 2W
HEAT DISSIPATED (WATTS)
NATURAL AND FORCED
AIR VELOCITY (LFM)
400
400
1.0
Thermal Performance at Typical Load
Dashed Line = 218-40CT3
600
600
1.5
800
800
2.0
217-36CT6
D
1000
1000
2.5
2
PAK, TO-220, SOL-20
Board Level
21°C/W @ 200LFM
21°C/W @ 200LFM
Forced Convection
25
20
15
10
5
0
Heat Sinks
SMT Devices
23