±0.4% tolerance — precision without the trim pot
The TL1431CCT holds ±0.4% initial tolerance on the 2.5 V internal reference — tight enough to set a power-supply output or ADC reference without an external trim resistor in most commercial-grade designs.
100 mA output — drives optocouplers and ADC inputs
Rated for 100 mA continuous cathode current — enough to drive an optocoupler LED in a feedback loop or supply the reference input of a multi-channel ADC without a buffer. Minimum cathode current is 1 mA, so the part stays in regulation even at light load — useful for battery-powered circuits where every microamp counts.
SOT-323-6L — small footprint, field-swappable
Surface-mount with standard lead pitch; can be hand-soldered with a fine-tip iron in a pinch, though a hot-air station is cleaner for production rework.
RoHS status — legacy BOM consideration
Marked as RoHS non-compliant — the TL1431CCT uses lead-bearing solder finish.