It is designed for low-power bias, ADC reference, and comparator threshold applications where a stable voltage is needed without a series regulator. The shunt topology means it behaves like a two-terminal Zener — it sinks current from a supply through a single resistor, making it simple to bias from any rail above 2.048 V plus headroom.
Through-hole TO-92 — legacy footprint, easy swap
The TO-92-3 through-hole package is a standard three-lead transistor outline. It is straightforward to hand-solder or socket.
If you are dual-sourcing for supply resilience, note that the LM4132AMF-4.1/NOPB is a series (not shunt) reference with tighter tolerance and lower drift, but it is surface-mount and requires a different bias circuit — not a pin-for-pin swap.