The SOT-143 package is a type of semiconductor package used for small outline transistors and integrated circuits. The abbreviation "SOT" stands for "Small Outline Transistor," while "143" identifies the specific package style.
SOT 143
The SOT-143 package is designed for surface-mount technology, which allows for direct mounting and soldering onto printed circuit boards (PCBs). This makes it well suited for use in high-density mounting designs.
The SOT-143 package typically has four leads (or pins), although the configuration of these pins can vary depending on the specific device and manufacturer.
In terms of size, the SOT-143 package is relatively small, which makes it suitable for compact electronic devices. However, the exact dimensions can vary somewhat between manufacturers.
As always, for detailed information such as pin assignment, electrical characteristics, or exact physical dimensions, you should refer to the manufacturer's data-sheet for the specific device in question.