What this small-signal N-channel MOSFET is
The UPA2450TL-E1-A: The UPA2450TL--A: The UPA2450TL--A is a small-signal N-channel MOSFET from NEC / Renesas, designed for low-power switching and signal-level amplification in through-hole or surface-mount designs.
Packaging and procurement note
which is typical for small-signal MOSFETs ordered in moderate quantities for prototyping or low-volume production.