DALC112S1RL from STMicroelectronics is a TVS diode device used to help protect sensitive electronic interfaces from transient voltage events such as ESD and other surge-related disturbances. In practical designs, parts in this category are commonly selected for safeguarding data lines, communication ports, and compact consumer or industrial electronics where board space and signal integrity are important. For engineers, the value of this component is its positioning as a circuit protection solution from a major semiconductor supplier with broad ecosystem support. It can be relevant in portable devices, embedded control boards, interface protection stages, and equipment exposed to handling or cable-plug events. The current lifecycle status for DALC112S1RL is information not available, so design teams should confirm ongoing production status directly with STMicroelectronics or authorized channel partners before committing it to new programs. RoHS compliance information is also not available in the provided data and should be verified through the latest manufacturer datasheet, compliance declaration, or distributor documentation.