The LM9140BYZ-4.1 is a voltage reference IC, a precision component that supplies a stable output voltage for biasing ADCs, DACs, and sensor signal chains where the absolute accuracy of the reference sets the measurement floor. It is supplied in a bulk package, which typically means the parts are tube- or tray-packed rather than tape-and-reel — a detail that matters for pick-and-place setup and for small-batch or prototype runs where reeled packaging is not required.
Lifecycle and compliance
The part is RoHS non-compliant, so it contains lead or other restricted substances above the RoHS threshold — a flag for designs that must meet RoHS 2/3 directives, though many industrial and high-reliability applications still accept non-compliant parts under exemption.