| Alex pulled up the part list. Scanned the specs. And there it was: RDS(on).
Not outrageous. Just *ahem* lazy. A little too high for a system that deserved better. A replacement part was found—lower resistance, better thermal transfer. Not revolutionary, just respectful. Respectful of the current, the heat, the design that had done its job but could do it quieter.
Soldered in. Powered up. Watched the board breathe. The heat settled. The numbers held. Efficiency crept upward. Not in a blaze, but like a room exhaling after someone closes the window.
Sometimes the big wins are hidden in small specs. Sometimes resistance isn’t a problem—it’s a clue. A sign that the system is talking. That it needs you to listen, not to the loud errors, but to the soft murmurs of energy going places it shouldn’t.
Low RDS(on) doesn’t just mean lower loss. It means you cared. It means your design wasn’t just functional—it was considerate. And in engineering, that’s where the real returns come from.
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