NC7SZ125P5X from onsemi, in a SC-70-5. 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 Output Enable. When LOW the buffer drives Y from A; when HIGH the Y output is placed in high-impedance (3-STATE). Tolerates input voltages up to 6 V independent of VCC.
2	A	input	Buffer data input. Propagates to output Y when /OE is LOW. Over-voltage tolerant (up to 6 V) allowing 5 V-to-3 V translation. High-impedance when VCC = 0 V.
3	GND	power_in	Ground / 0 V reference for the device.
4	Y	tri_state	Three-state buffer output. Drives ±24 mA at 3 V VCC (±32 mA at 4.5 V). Placed in high-impedance when /OE is HIGH; tolerates voltages above VCC when in the 3-STATE condition.
5	VCC	power_in	Positive supply. Operating range 1.65 V to 5.5 V (data retention down to 1.5 V). Quiescent supply current ICC = 20 µA max. Bypass locally with a 0.1 µF ceramic to GND.

Key specifications

Parameter	Value
Manufacturer	onsemi
Package	SC-70-5
Category	Logic
Pins	5

Ordering variants

Same part, different packaging or reel option.

NC7SZ125P5X
NC7SZ125P5XM5X
NC7SZ125P5XL6X
NC7SZ125P5XFHX

CAD (KiCad official)

Symbol: NC7SZ125P5X
Footprint: Package_TO_SOT_SMD:SOT-353_SC-70-5
3D model: SC-70-5 (KiCad packages3D, STEP)

3D model downloads

Two STEP files. Same geometry, different body top:

File	Size	Use it when
`nc7sz125p5x.step`	87 KB	You want the bare part, or you mark your own boards.
`nc7sz125p5x-etched.step`	1.9 MB	You want the part with `NC7SZ125P5X` already on it.

The marking in the etched file is real recessed geometry cut into the solid, not a texture or a decal: 480 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 2c35f890b62b9580, 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