The TL431AILPM in TO923 package provides a compact, versatile solution for precision regulation and reference needs. This listing includes 19 pieces in a single lot, suitable for throughhole designs and hobbyist to production projects. Key benefits Delivers a precise, adjustable reference for shunt regulation, enabling stable regulation in a wide range of circuits. Simple and costeffective alternative to fixed zeners in feedback networks and voltage references. Low part count with easy throughhole mounting, ideal for prototyping and scalable production. Flexible use in common power supply topologies, LED drivers, and reference circuits. Stable performance with a welldefined reference voltage in typical operating conditions. Key attributes Functionality: a programmable shunt regulator with a 2.495 V reference (typical), adjustable output using external resistor networks connected to the cathode, anode, and reference terminals. Compatibility: suitable for inclusion in linear regulators, switching regulator feedback loops, precision references for ADC/DAC circuits, LED driver control, and other regulation or reference applications. Size: TO923 package, threeterminal device designed for compact, throughhole PCB mounting. Material: plastic molded TO92 package, suitable for standard PCB assembly processes. Performance: designed for stable reference operation with low dynamic impedance; requires a minimum cathode current to regulate and supports operation within typical TL431 applications. For exact current limits and thermal behavior, refer to the manufacturer's datasheet for TL431AILPM. Applications and use cases Regulated power supply feedback: integrate into the regulation loop of linear or switching power supplies to set and stabilize output voltage. Precision reference for measurement circuits: use as a stable voltage reference for ADCs, DACs, or sensor interfaces in instrumentation. LED driver and battery charging control: implement constantcurrent or constantvoltage regulation in LED drivers or battery chargers through external resistor networks. Additional notes Each contains 19 TL431AILPM devices in the TO923 package. Pin configuration comprises three terminals: cathode, reference, and anode. Exact pinout may vary by manufacturer; consult the specific datasheet for the TO92 orientation when mounting on a PCB.