Part identity and key ratings
It offers a peak pulse power rating of 350 W (8/20 µs waveform) and a clamping voltage of 44 V at 8 A peak pulse current, making it suitable for protecting 24 V nominal signal or power rails. The reverse standoff voltage is rated at 24 V minimum, with a breakdown voltage of 26.2 V minimum — the margin between standoff and breakdown defines the protection threshold for the rail.
Housed in the industry-standard SOT-23-3 (TO-236) surface-mount package, the NUP2105LT3G shares the same footprint as many general-purpose small-signal transistors and diodes, easing layout reuse.
For BOM lines that still specify this exact code, we can source from our independent inventory network — submit an RFQ with your target quantity and date-code preference, and we will confirm availability and pricing at quote time. No direct replacement or cross-reference is published by onsemi for this order code; a parametric search for a 24 V bidirectional TVS in SOT-23-3 with similar capacitance (30 pF at 1 MHz) is the practical next step for new designs.