Rad-Tolerant Space Grade Die, Precision (Programmable) Shunt Reference



The TL1431-DIE is a precision programmable reference. This device has a typical output impedance of 0.2 Ω. Active output circuitry provides a very sharp turnon characteristic, making the device an excellent replacement for Zener diodes and other types of references in applications such as onboard regulation, adjustable power supplies, and switching power supplies.


  • QMLV Qualified to 100k Rad RHA,
    SMD 5962R99620
  • Initial Voltage Tolerance
  • 0.2-Ω Typical Output Impedance
  • Fast Turnon…500 ns
  • Sink Current Capability
  • Low Reference Current (REF)
  • Adjustable Output Voltage

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Other qualified versions of TL1431-DIE

Version Part Number Definition
Automotive TL1431-Q1 Q100 devices qualified for high-reliability automotive applications targeting zero defects
Enhanced Product TL1431-EP Supports Defense, Aerospace and Medical Applications
Space TL1431-SP Radiation tolerant, ceramic packaging and qualified for use in Space-based application