SGM3157YC6 from SGMICRO, in a SC-70-6(SOT-363). 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	NO	bidirectional	Normally-Open analog switch terminal. Connected to COM when IN is logic high; bidirectional analog signal path, may be an input or output. Signal range 0V to V+.
2	GND	power_in	Ground reference for the device.
3	NC	bidirectional	Normally-Closed analog switch terminal. Connected to COM when IN is logic low; bidirectional analog signal path, may be an input or output. Signal range 0V to V+.
4	COM	bidirectional	Common analog switch terminal. Routed to either NO or NC based on the IN logic level; bidirectional signal path with 4.5Ω typical on-resistance at V+ = 5.0V.
5	V+	power_in	Positive power supply input. Operating range 1.8V to 5.5V; typical supply current 5µA max at V+ = 5.5V. Bypass with 0.1µF to GND.
6	IN	input	Digital control input selecting which switch terminal (NO or NC) connects to COM. TTL/CMOS compatible: VIH ≥ 1.5V (min at V+=4.5-5.5V), VIL ≤ 0.6V. Logic 1 closes COM-NO; logic 0 closes COM-NC.

Key specifications

Parameter	Value
Manufacturer	SGMICRO
Package	SC-70-6(SOT-363)
Category	Interface
Pins	6

Ordering variants

Same part, different packaging or reel option.

SGM3157YC6/TR

CAD (KiCad official)

Symbol: SGM3157YC6
Footprint: Package_TO_SOT_SMD:SOT-363_SC-70-6
3D model: SC-70-6(SOT-363) (KiCad packages3D, STEP)

3D model downloads

Two STEP files. Same geometry, different body top:

File	Size	Use it when
`sgm3157yc6.step`	99 KB	You want the bare part, or you mark your own boards.
`sgm3157yc6-etched.step`	2.1 MB	You want the part with `SGM3157YC6` already on it.

The marking in the etched file is real recessed geometry cut into the solid, not a texture or a decal: 504 faces against 117 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: SGMICRO datasheet (11 pp, sha256 da0e41efe044bdc7, retrieved 2026-08-17, tier: lcsc)
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