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Answer by Sasha for Are PTC resettable fuses fast enough to protect from shorts?
USB ports on mobo have own PTC installed usually, so you'll never ever get more than 500mA from USB 2.0 physically. (old thread but anyways)
View ArticleAnswer by John Miller for Are PTC resettable fuses fast enough to protect...
There are hundreds if not thousands of different PTC resettable fuses with a wide array of Time-Current Characteristics. Consider the Littelfuse 60R010:It has a Hold-Current rating of 0.1A which is the...
View ArticleAnswer by mikeselectricstuff for Are PTC resettable fuses fast enough to...
USB ports should be protected, so 25A even for short periods is unlikely.
View ArticleAnswer by Andrey for Are PTC resettable fuses fast enough to protect from...
I believe at 20-25A time for a PTC to trip is significantly less than 0.1s. From what I recall, 0.1s is generally the time to trip at 7A or less. In either case, voltage regulators usually have over...
View ArticleAre PTC resettable fuses fast enough to protect from shorts?
Time to trip of most of PTCs is about 0.1 seconds. In case of short between VCC and GND the current will be very high (maximum a power supply can provide) for at least 0.1s. Isn't it enough to burn out...
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