PPTC Fuse Selection: Hold Current and Ambient Derating
A PPTC is selected at the hottest ambient, not at 25 C. Hold current, trip time and voltage drop are what decide the part.
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Review searchable product records associated with yageo, then confirm the exact MPN, sourcing path and commercial conditions through quotation. Manufacturer naming is a catalog field and does not state an authorized distribution relationship.
CC0402JRNPO9BN330 - Yageo, 0402
CC0402JRNPO9BN331 - Yageo, 0402
CC0402JRNPO9BN390 - Yageo, 0402
CC0402JRNPO9BN391 - Yageo, 0402
CC0402JRNPO9BN470 - Yageo, 0402
CC0402JRNPO9BN471 - Yageo, 0402
CC0402JRNPO9BN560 - Yageo, 0402
CC0402JRNPO9BN561 - Yageo, 0402
CC0402JRNPO9BN680 - Yageo, 0402
CC0402JRNPO9BN820 - Yageo, 0402
CC0402JRX7R7BB104 - Yageo, 0402
CC0402JRX7R7BB563 - Yageo, 0402
CC0402JRX7R8BB103 - Yageo, 0402
CC0402JRX7R9BB102 - Yageo, 0402
CC0402JRX7R9BB103 - Yageo, 0402
CC0402JRX7R9BB222 - Yageo, 0402
CC0402JRX7R9BB332 - Yageo, 0402(1005)
CC0402KPX7R7BB104 - Yageo, 0402
CC0402KRX5R5BB225 - Yageo, 0402(1005)
CC0402KRX5R5BB474 - Yageo, 0402
CC0402KRX5R5BB475 - Yageo, 0402
CC0402KRX5R6BB104 - Yageo, 0402
CC0402KRX5R6BB105 - Yageo, 0402
CC0402KRX5R6BB225 - Yageo, 0402
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A PPTC is selected at the hottest ambient, not at 25 C. Hold current, trip time and voltage drop are what decide the part.
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Two numbers decide it: voltage difference times current. Below 1 W an LDO is simpler and quieter; above it the heat has nowhere to go.
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A TVS is chosen by four numbers in a specific order. Standoff above the rail, clamp below the IC limit, enough peak current, and capacitance that...
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