GX112S from GXCAS, in a SOT-563. 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	SCL	input	Serial clock input for SMBus / I2C interface. Open-drain, requires an external pull-up resistor (4.7 kΩ recommended). Fast mode up to 400 kHz, high-speed mode up to 2.75 MHz.
2	GND	power_in	Ground reference (0 V) for the device.
3	ALERT	output	Over-temperature alert output. Open-drain, requires an external pull-up resistor (4.7 kΩ recommended). Polarity (active-low/high) and comparator/interrupt mode are software-configurable via POL and TM bits.
4	ADD0	input	I2C slave address select. Tie to V+, GND, SCL, or SDA to select one of four possible bus addresses, allowing up to four GX112 devices on the same bus.
5	V+	power_in	Positive supply voltage input, 1.4 V to 5.5 V (3.3 V nominal). Absolute maximum 6 V. Power-on reset threshold typ 1.1 V.
6	SDA	bidirectional	Serial data line for SMBus / I2C interface. Open-drain, requires an external pull-up resistor (4.7 kΩ recommended).

Key specifications

Parameter	Value
Manufacturer	GXCAS
Package	SOT-563
Category	Sensor
Pins	6

Ordering variants

Same part, different packaging or reel option.

GX112S-T&R
GX112D-T&R

CAD (KiCad official)

Symbol: GX112S
Footprint: Package_TO_SOT_SMD:SOT-563
3D model: SOT-563 (KiCad packages3D, STEP)

Provenance

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

Datasheet: GXCAS datasheet (23 pp, sha256 44b38d392e1ec25d, 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