SMF24CA

SMF24CA is a bidirectional transient-voltage suppressor diode from Zhuhai HongJiaCheng in SOD-123FL, verified against the maker’s SMF SERIES manual, revision 2.2. Verified figures for this row: a 24 V reverse standoff, breakdown between 26.7 V and 29.5 V at 1 mA, maximum clamping of 38.9 V at a 5.1 A peak pulse current, and reverse leakage of 1 µA maximum. At a 24 V standoff the part sits across industrial-control and vehicle-adjacent rails that idle at 24 V and must ride through load-dump and inductive transients without the clamp conducting in normal operation. Selection advice: match the standoff to the highest normal rail voltage, not the nominal — a 24 V rail that charges above its nominal wants the next standoff step, because a TVS that leaks at temperature ages the rail it protects. Note on attribution: the candidate pool labelled this line R+O (HongJiaCheng); the figures here are HongJiaCheng’s own, from its SMF SERIES manual — the R+O brand attribution is flagged for confirmation at review. Parameters verified against the HongJiaCheng SMF SERIES datasheet, revision 2.2.