NL17SZ125DFT2G from onsemi, in a SOT-353. Pinout and pin descriptions extracted from the manufacturer datasheet by ds2sf; symbol, footprint, and 3D from KiCad-official CAD.

Pinout

Pin	Name	Type	Function
1	OE	input	Active-low 3-state output enable. When OE is Low the buffer drives OUT Y from IN A; when OE is High, OUT Y is in high-impedance (Z). Input voltage range 0 V to 5.5 V, overvoltage tolerant.
2	A	input	Non-inverting logic data input A. LVTTL/LVCMOS compatible; overvoltage tolerant (0 V to 5.5 V regardless of VCC). Drives OUT Y = A when OE is Low.
3	GND	power_in	Ground reference (0 V) for the device.
4	Y	tri_state	3-state buffer output. Follows IN A when OE is Low; high-impedance when OE is High. Balanced 24 mA sink/source drive; overvoltage tolerant (0 V to 5.5 V) in power-down mode.
5	VCC	power_in	Positive supply voltage, 1.65 V to 5.5 V recommended operating range (absolute max 7.0 V). Decouple locally with a ceramic capacitor to GND.

Key specifications

Parameter	Value
Manufacturer	onsemi
Package	SOT-353
Category	Logic
Pins	5

Ordering variants

Same part, different packaging or reel option.

NL17SZ125DFT2G
NL17SZ125DFT2GDFT1G
NL17SZ125DFT2GXV5T2G
NL17SZ125DFT2GXV5T1G
NL17SZ125DFT2GDTT1G

CAD (KiCad official)

Symbol: NL17SZ125DFT2G
Footprint: Package_TO_SOT_SMD:SOT-353_SC-70-5
3D model: SOT-353 (KiCad packages3D, STEP)

3D model downloads

Two STEP files. Same geometry, different body top:

File	Size	Use it when
`nl17sz125dft2g.step`	87 KB	You want the bare part, or you mark your own boards.
`nl17sz125dft2g-etched.step`	2.1 MB	You want the part with `NL17SZ125DFT2G` already on it.

The marking in the etched file is real recessed geometry cut into the solid, not a texture or a decal: 537 faces against 102 in the bare model. It survives export, section views, and rendering in any CAD tool, and it drops straight into KiCad or Fusion with no extra setup.

Provenance

Data extracted from the manufacturer datasheet, not a distributor listing:

Datasheet: onsemi datasheet (12 pp, sha256 ffa3474762916944, retrieved 2026-08-17, tier: manufacturer)
Extractor: ds2sf (Claude). Every pin and dimension is cited to a datasheet page; it refuses to fabricate.
CAD: KiCad official libraries (CC-BY-SA 4.0).

Datasheet PDF