How to Protect Your Fan's PCBA from Damaging Condensation.

Have you ever noticed your wall fan or ceiling fan suddenly acting up during humid weather?   The culprit might be condensation - those tiny water droplets that form when warm, moist air meets a cooler surface, just like how water beads up on a cold drink glass.

This natural phenomenon becomes a real problem when it happens inside your fan's electronics.   The printed circuit board (PCBA) is particularly vulnerable.   When water droplets form on its surface, they can cause short circuits, corrode metal components, and eventually lead to complete failure.   

But don't worry - protecting your fan's electronics is easier than you might think.   Here are some practical methods that our manufacturer is currently using:

Smart Placement Matters

Many newer fan designs position the PCBA away from the motor's heat and metal casing.   Some even include simple drip shields - think of them as tiny "umbrellas" that direct condensation away from sensitive components.

Modern Coatings Work Wonders

There are amazing UV-coatings available now that create an invisible waterproof layer over the entire circuit board.   The PCBA gets dipped for just few seconds, and within minutes, it's protected.   Water droplets roll right off like they would from a lotus leaf, yet the coating doesn't affect the board's performance.

Better Materials Help

Using metal-core boards instead of standard materials improves heat distribution, preventing cold spots where condensation would normally form.   It's like giving your PCBA its own climate control system.

The key is combining good ventilation with proper protection.   Ensuring air can circulate around the board helps reduce moisture buildup, while modern coatings provide that essential extra security layer.

Really, it's all about being proactive rather than waiting for problems to occur.   With these simple strategies, you can ensure your fans keep you cool when you need them most - even during the most humid monsoon days.  

Tecote is a supplier of DC brushless motor solutions integrating R&D and production. Welcome to consult and cooperate! Email: info@tecote.com