How is the stack fin made?

The stacked fins heat sink fin is achieved using conformed metal sheets stacked together in a direction to produce the stacked fins array. Stacked fins can be manufactured with higher aspect ratios. This stacked fins array creates a huge amount of surface area to dissipate the heat while maintaining good airflow through the heat sink. Stacked fins heat sink also conveys the benefit of reducing the cost and lead-time.

What is the advantage of stack fin heat sink?

Compare to folded fin heat sinks, stacked fins heat sink has lower tooling cost and are faster fabricated and assembled. This makes the stacked fins heat sink an attractive alternative particularly in smaller lot size manufacturing. Pipe-thru-fin is a typical example of stacked fins in heat pipe assembly.