SS189 Unipolar Hall-Effect Digital Switch Packages Features and Benefits – 4.5V to 24V Operation – -40℃ to 150℃ Superior temperature operation – Bipolar technology – Open-collector 25 mA output – Reverse battery protection – Small Size-SOT23 3L or SIP 3L – Solid-state reliability – Resistant to physical stress 3 pin SOT23 (suffix SO) 3 pin SIP (suffix UA) – Activate