The HVM14TR-E is a PIN diode rated for a reverse voltage of 50 V, built for RF switching, attenuator, and limiter circuits where low capacitance at zero bias and low series resistance under forward bias are needed. It's the kind of part you'd find in a transmit/receive switch or a variable attenuator pad on a 50-ohm line.
No last-time-buy notice or phase-out is documented.