PJ78L12SQL is a fixed 12V voltage regulator in a SOT89 package. This listing includes 10 pieces. Key benefits Delivers a stable 12V output for lowpower electronic circuits, enabling reliable operation of 12V rails in compact designs. Compact SOT89 3pin package helps save board space and allows easy surfacemount installation. Simple, proven linear regulator solution for converting a higher input voltage to a fixed 12V rail in small power supplies and embedded projects. Easy to integrate on standard PCBs with a straightforward threeterminal configuration. Suitable for a variety of 12V regulation needs in hobbyist and professional electronics. Key attributes Model: PJ78L12SQL Type: Fixed voltage regulator Output voltage: 12V Package: SOT89 Configuration: 3pin device Quantity: 10 pieces per pack Applications: Used to regulate a supply to a fixed 12V rail on compact power supplies, embedded systems, and boardlevel power regulation Notes: For exact electrical characteristics and maximum ratings, refer to the manufacturer datasheet Two to three use cases Use case 1: Provide a stable 12V supply for a compact microcontroller or sensor module powered from a higher input source. Use case 2: a small regulator in a compact LED driver or control board to achieve a fixed 12V rail with a lowprofile SOT89 package. Use case 3: Implement a spacesaving 12V regulator on a custom PCB for hobbyist projects that require a dependable 12V line from a single supply.