What this voltage reference is and where it fits
The Maxim Integrated MAX6023EBT45 is a voltage reference IC — a precision analog building block that supplies a stable output voltage for ADCs, DACs, and other mixed-signal circuits that need a known reference point against which to measure or generate signals. Voltage references of this class sit in the analog signal chain, often between the power rail and the converter's reference input, where supply noise and temperature drift must be rejected.
Lifecycle and compliance — the procurement reality
That said, the part is RoHS non-compliant — a critical flag for any BOM that must meet EU RoHS or similar restricted-substance directives. If your assembly line or customer specification requires lead-free solder and fully RoHS materials, this part will not pass incoming inspection. For legacy builds or military/aerospace programs that have a leaded solder exemption, the non-compliant status is often acceptable.
Sourcing posture
Because the part is active and not subject to a last-time-buy window, it can be sourced through standard independent distribution channels.