RS2057XH from Jiangsu RUNIC Tech, in a SOT-23-6. 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	bidirectional	Normally-Open analog switch terminal. Connected to COM when the digital control input IN is logic high (1). Handles analog or digital signals from 0V to V+ with ~4.5Ω typical on-resistance; continuous current limit ±300mA.
2	GND	power_in	Ground reference for the device. Absolute maximum V+/IN to GND rating is -0.3V to 7.0V.
3	NC	bidirectional	Normally-Closed analog switch terminal. Connected to COM when the digital control input IN is logic low (0). Analog signal range 0V to V+, ~4.5Ω typical on-resistance; continuous current limit ±300mA.
4	COM	bidirectional	Common analog switch terminal. Routed to either NO or NC depending on the state of the IN control pin, with break-before-make switching (~5ns tBBM at 5V). Analog signal range 0V to V+; continuous current ±300mA.
5	V+	power_in	Positive power supply. Operating range 1.8V to 5.5V. Absolute maximum 7.0V referenced to GND. Quiescent supply current typically <1µA.
6	IN	input	Digital control input (TTL/CMOS compatible) that selects the switch path. Logic 1 connects NO↔COM (NC open); logic 0 connects NC↔COM (NO open). VIH ≥ 1.5V at V+=5V (≥1.3V at 3.3V); VIL ≤ 0.6V at V+=5V (≤0.5V at 3.3V). Input leakage ≤1µA. Must not be left floating.

Key specifications

Parameter	Value
Manufacturer	Jiangsu RUNIC Tech
Package	SOT-23-6
Category	Interface
Pins	6

Ordering variants

Same part, different packaging or reel option.

RS2057XH
RS2057XC6

CAD (KiCad official)

Symbol: RS2057XH
Footprint: Package_TO_SOT_SMD:SOT-23-6
3D model: SOT-23-6 (KiCad packages3D, STEP)

3D model downloads

Two STEP files. Same geometry, different body top:

File	Size	Use it when
`rs2057xh.step`	97 KB	You want the bare part, or you mark your own boards.
`rs2057xh-etched.step`	1.7 MB	You want the part with `RS2057XH` already on it.

The marking in the etched file is real recessed geometry cut into the solid, not a texture or a decal: 423 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 c1747b824cf512bb, 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