RHFL4913S331 manufactured by STMicroelectronics belongs to the family of rad-hard positive fixed voltage regulators featuring high performance. It is available in a hermetic ceramic package, making it well suited for harsh environments. It is able to provide a suite of protection functions when operating, including embedded overtemperature and overcurrent protection. In addition, it features an input supply range of up to 12 V, remote sensing operation, programmable output short-circuit current, adjustable current limitation, and more.