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The TL432QPK is a three-terminal adjustable shunt voltage reference manufactured by Texas Instruments. It operates within an extended temperature range of -40°C to 125°C and utilizes a SOT-89 surface-mount package with three pins. The device provides a nominal reference voltage of 2.495V, with a guaranteed output range between 2.44V and 2.55V. It supports cathode currents from 600µA to 100mA and withstands maximum voltages up to 36V.
Verify the specific suffix 'QPK' against official Texas Instruments documentation to confirm the exact tolerance grade and qualification status. Ensure the component matches the required SOT-89 footprint and lead configuration for your PCB layout. Cross-reference the datasheet revision date to validate parameter consistency before finalizing procurement specifications.
Select this component when a wide operating temperature range and robust shunt regulation are required. The SOT-89 package offers a balance between thermal performance and compact surface-mount integration. Consider the 2.495V nominal reference for applications needing precise scaling or feedback control without additional external reference sources.
This part belongs to the TL43x family of programmable shunt regulators. These devices function as precision zener diodes with adjustable thresholds. The TL432 variant typically denotes specific accuracy grades or temperature ranges within the broader series, designed for general-purpose power management and signal conditioning tasks.
Compatible substitutes include the TL431AQPK and TL432AIPK. Verify pinout compatibility and electrical parameter alignment, specifically reference voltage tolerance and maximum cathode current ratings, before implementing any cross-replacement.