GS3101-CR from Gainsil, 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. Connected to COM when IN is high. Signal range VSS to VDD; on-resistance 2.5Ω typical at VS=5V.
2	VSS	power_in	Negative supply / ground reference. Typically tied to GND in single-supply operation. Analog signal range referenced to VSS.
3	NC	passive	Normally-Closed analog switch terminal. Connected to COM when IN is low. Signal range VSS to VDD; on-resistance 2.5Ω typical at VS=5V.
4	COM	passive	Common analog switch terminal (SPDT pole). Routed to either NO or NC depending on the state of IN. Signal range VSS to VDD.
5	VDD	power_in	Positive supply input, +1.8V to +5.5V. Bypass with 0.1μF to VSS close to the pin. Absolute maximum VDD-VSS is +7.5V.
6	IN	input	Digital control input selecting the SPDT state. High connects COM to NO; low connects COM to NC (break-before-make). TTL/CMOS compatible; VINH=1.5V min (VS=5V), VINL=0.55V max. Input tolerates drive up to 5.5V independent of VDD.

Key specifications

Parameter	Value
Manufacturer	Gainsil
Package	SC-70-6
Category	Comm/UART
Pins	6

Ordering variants

Same part, different packaging or reel option.

GS3101-CR
GS3101-CRTR

CAD (KiCad official)

Symbol: GS3101-CR
Footprint: Package_TO_SOT_SMD:SOT-363_SC-70-6
3D model: SC-70-6 (KiCad packages3D, STEP)

Provenance

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

Datasheet: Gainsil datasheet (10 pp, sha256 e70f102ecaead335, 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