BAT54 Schottky diode datasheet, an 86.4 KB PDF document. The BAT54 is a small-signal Schottky diode available in single, dual, common-anode and common-cathode variants, usually in SOT-23 packages, and appears all over motherboards in OR-ing and protection circuits. The sheet shows the pin configuration for each variant, forward voltage and reverse ratings. When replacing one, check the marking code to determine which internal arrangement is fitted, since swapping variants can break the circuit.
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