Allegro MicroSystems Inc. Two-Wire Hall-Effect Latch APS12400LLHALX-1H1A

The APS12400 is a two-wire planar Hall-effect latch designed for automotive and industrial safety systems, featuring ASIL A compliance per ISO 26262, internal diagnostics, and a safe state. It operates from 3 to 24 V with a junction temperature range of -40°C to 175°C and includes integrated overvoltage clamp, reverse-battery protection, and ESD immunity. The device is qualified to AEC-Q100 Grade 0 and supports SmCo, NdFeB, and ferrite magnets with selectable magnetic switch points and output polarity. Packaging options include 3-pin SOT23-W, 3-pin SIP through-hole, and 3-pin SIP with integrated passive components. The specific variant APS12400LLHALX-1H1A has a switch threshold of BOP: +40 G max and BRP: -40 G max, with output current of 5 to 6.9 mA and flat temperature coefficient, in a 3-pin SOT23-W surface-mount package on a 13-inch reel.