Stamped Stacked Fin Heat sink is made from sheets of aluminum and copper, where the metal is stamped into a particular configuration based on the intended application. For maximum design flexibility, fins can be stamped into a broad range of geometries and thicknesses. A stacked fin heat sink is a useful approach for medium to high volume production.

1. CNC machining copper base plate and aluminum base plate for stacked fin heat sink

2. Stamping aluminum fin and copper fin by punch machine

3. Surface treatment: copper base plate and copper fin anti-oxidation, aluminum base plate and aluminum fin nickel plated

4. Soldering base plate and fin together by reflow oven

5. Testing

6. Degrease and anti-oxidation

7. Install screw and spring, apply thermal grease, laser marking production code/part no.

8. Inspection, pack and ship.