Manufacturing Process
Snapped fin (also know as stacked fin or zipper fin) heat sinks are manufactured by stamping sheets of rolled aluminum or copper into a tightly formed array of fins. A progressive tool is used in the stamping process to cut features and then interlock the fins together. Snapped fin heat sinks are most commonly integrated with heat pipes at the condenser end where they are used to cool the heat pipes, thus enabling the phase change.
Materials
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Stamped Aluminum
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Stamped Copper
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Embedded Heat Pipes
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Bonded to Base (Epoxy / Brazed)
Specifications
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24 in (609 mm) max profile width
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>= 0.1 mm fin thickness
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40:1 fin height to minimum gap ratio
Applications
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Small space constraints
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Networking / Telecom
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High power
Benefits
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Moderate to high surface area
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High aspect ratio
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Allows heat pipe integration
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Superior forced air solution
Tooling Cost
Production Cost
Finishing
- CNC machining
- Drilling
- Tapping
- Stamping
- Anodizing
- Screen printing
- Powder coating
- Laser etching
- Polishing
- Embedded fans
- Thermal greases
- Screws
- Springs
- Clips
- Embedded heat pipes
- Phase change materials
- Back plates
- Gap filler pads
- PEMS
- Standoffs
- Dielectric pads
- Compounds
