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The TL431AQDBVTE4 is an automotive-grade adjustable precision shunt regulator manufactured by Texas Instruments. It operates within a voltage range of 2.495 V to 36 V and supports a maximum cathode current of 100 mA. The device features an initial accuracy of ±1% and a maximum temperature coefficient of 92 ppm/°C. Designed for surface mount installation, it utilizes the SOT-23-5 package (SC-74A). The component functions reliably across an extended industrial temperature range from -40°C to +125°C.
Verify the complete part number including the E4 suffix, which denotes lead-free composition and specific tape-and-reel packaging configuration. Confirm RoHS compliance status and ensure the supplier provides valid traceability documentation required for automotive assembly lines. Check for any recent product change notices affecting marking or assembly sites.
Select this component when automotive reliability and high precision are required in space-constrained designs. The SOT-23-5 package offers a compact footprint suitable for dense PCB layouts. Ensure the application voltage does not exceed the 36 V maximum rating and that thermal management accommodates the specified operating temperature range.
This device belongs to the TL431 family of programmable shunt regulators. The 'Q' designation indicates automotive qualification, while 'A' specifies the 1% accuracy grade. The 'E4' suffix identifies the lead-free material and reel packaging format. It serves as a stable reference element in various analog control applications requiring precise voltage regulation.
Direct substitutes include TL431AQDBVRG4 and TL431AQDBVT. Verify pin compatibility and electrical specifications before substitution. Non-direct alternatives may require circuit redesign due to differences in accuracy or temperature coefficients.