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Phone LEDs which put out 1W in a much smaller package somehow survive.
by 21 9y ago
Phone LEDs which put out 1W in a much smaller package somehow survive.
- walrus01 9y agoDissipating 5W from something the size of a SD card is a much greater challenge than 1W. 1W in a phone body also has much more matter and additional nearby components to sink heat into (ex: feel how warm the front of the screen gets on a modern 6" smartphone while rapid charging). These sorts of things have to be designed with the challenge that people will be using them in ambient air temperatures of 44C in some parts of the world.
- moonbug22 9y agoNot a black body.
- LeifCarrotson 9y agoA 1W LED is soldered to big heatsinking planes on the PCB it's mounted to, which is itself designed to sink heat away into the phone body. An SD card is wrapped in plastic, slides into a plastic slot, and touches the phone with only a few small pins. Plus an LED behind a lens and cover on a phone or inside a flashlight is perfectly fine to run at 60C, but eject an SD card at 60C into your hand and you'll be throwing it across the room.
- wtallis 9y ago> but eject an SD card at 60C into your hand and you'll be throwing it across the room. Probably not, given the very low heat capacity of an SD card's plastic casing. But I can say from experience that ejecting a 2.5" SATA drive with a metal case that's well over 60°C will cause you to drop it quickly. It's a good thing SSDs can handle falls without trouble.