Pin Fin Heatsink Introduction
In recent years, the function of LED has developed rapidly to an unprecedented height. Unfortunately, the rapid development of functions has also increased the demand for heat dissipation. Therefore, designers need more efficient heat sinks to provide sufficient cooling demand for integrated LED.
The low thermal resistance of pin fin heat sink mainly benefits from the following characteristics: cylindrical pin, omnidirectional structure of pin array and its large surface area, as well as the high thermal conductivity of base and pin, which help to improve the performance of heat sink. Compared with square or rectangular fins, the resistance of cylindrical pins to air flow is low, and the omni-directional structure of pin array helps the surrounding air flow in and out of pin array conveniently.
Compared with other processes, cold forging has unique advantages:
1. Good mechanical strength
2. The surface of the finished mold is beautiful
3. High precision die forming
4. Cost advantage and high material utilization
Design guidance of common LED cold forged heat sink:
Maximum width: 200 mm
Maximum length: 200 mm
Maximum height: 50 mm
Minimum thickness of base : 2.0 mm
Minimum pitch between fins: 1.5 mm
Minimum distance between fin and base edge: 0.5 mm
