Obsolete — sourcing this reference for a BOM line
For a BOM line that calls out this part, the procurement path is independent distribution — surplus or new-old-stock inventory sourced per RFQ. Any replacement would need to be evaluated for pin-compatibility, output range, and temperature coefficient against the original design's requirements.
The ±0.5% initial tolerance and 50 ppm/°C temperature coefficient place it in the mid-precision tier — adequate for 8- to 10-bit ADC references, comparator thresholds, or regulator feedback dividers where a few millivolts of drift over temperature is acceptable. Minimum cathode current is 75 µA, which sets the lower bound on the bias resistor from the supply rail. The shunt can sink up to 12 mA, so the total current through the reference plus the load must stay under that ceiling. In a battery-powered circuit drawing 100 µA from the reference, the 75 µA minimum means the bias resistor must be sized to deliver at least that much even at the lowest supply voltage.
SOT-23-3 package — board-fit note
The part comes in a three-lead SOT-23-3 (TO-236-3 / SC-59) surface-mount package. No exposed pad; the die junction-to-ambient thermal path relies on the leadframe and board traces.