RS2257XC6 from Jiangsu RUNIC Tech, in a SC-70-6. 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	passive	Normally-Open analog switch terminal. When the logic control (IN) is high, NO is connected to COM through the ~0.6 Ω on-resistance channel; when IN is low, NO is disconnected. Signal range 0 V to V+.
2	GND	power_in	Ground reference for the device. Must be tied to the system ground.
3	NC	passive	Normally-Closed analog switch terminal. When the logic control (IN) is low, NC is connected to COM through the ~0.6 Ω on-resistance channel; when IN is high, NC is disconnected. Signal range 0 V to V+.
4	COM	passive	Common analog switch terminal. Routed to either NO or NC depending on the IN logic state (break-before-make). Signal range 0 V to V+, continuous current ±500 mA max.
5	V+	power_in	Positive supply input. Operating range +1.8 V to +5.5 V; absolute max 7.0 V referenced to GND. Quiescent supply current ≤1 µA.
6	IN	input	Digital control input, TTL/CMOS compatible. VIH ≥ 1.5 V (@5 V) / 1.3 V (@3.3 V); VIL ≤ 0.6 V (@5 V) / 0.5 V (@3.3 V). Logic 0 → NC on / NO off; Logic 1 → NO on / NC off. Must not be left floating.

Key specifications

Parameter	Value
Manufacturer	Jiangsu RUNIC Tech
Package	SC-70-6
Category	Interface
Pins	6

Ordering variants

Same part, different packaging or reel option.

RS2257XC6
RS2257XH

CAD (KiCad official)

Symbol: RS2257XC6
Footprint: Package_TO_SOT_SMD:SOT-363_SC-70-6
3D model: SC-70-6 (KiCad packages3D, STEP)

3D model downloads

Two STEP files. Same geometry, different body top:

File	Size	Use it when
`rs2257xc6.step`	99 KB	You want the bare part, or you mark your own boards.
`rs2257xc6-etched.step`	2.0 MB	You want the part with `RS2257XC6` already on it.

The marking in the etched file is real recessed geometry cut into the solid, not a texture or a decal: 488 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: Jiangsu RUNIC Tech datasheet (11 pp, sha256 2518049fa2c22b06, 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