Will extending the cooling fan lead affect its effectiveness

2023-09-23

When we buy a cooling fan, sometimes we wonder: Will lengthening the cooling fan lead affect the performance and thermal management of the fan?

In most cases, extending the lead wire will not significantly affect the normal function of the fan, but this is different for high-power fans. Extending the lead wire will increase the resistance, which may lead to a decrease in voltage, thereby reducing the actual operating voltage, lowering the fan's speed and air volume, and affecting the performance of the fan. Especially for fans that require specific speed operation or applications that maintain specific temperatures, the impact is even greater. Moreover, extending the lead may also introduce electromagnetic interference, affecting the normal operation of the fan and surrounding equipment. However, these effects are not as sensitive to constant speed fans because they can adjust the speed through pulse width modulation within a certain voltage range to maintain stability.

So, we need to ensure that we understand the power, current requirements, and characteristics of the fan before deciding whether to extend the fan's leads.

Dongguan Xingdong Electronics Co., Ltd

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