SL8402 from Slkor SLKORMICRO Elec, in a SOT-223-3. 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	IN	input	Logic input / fault-feedback terminal. Drives the internal MOSFET gate through the driver stage; during a fault (thermal shutdown, over-current, over-voltage clamp) the pin sinks an increased current I_INim back to the driving MCU as a fault indication. Absolute-max V_IN = -0.2 V to +7 V; input current limited to +/-20 mA when V_IN is outside that range.
2	Drain	output	Power MOSFET drain / load-connection terminal. Connects to the load returning to Vbb; withstands V_D up to 42 V and carries the switched drain current I_D up to a max operating value of 1.2 A (absolute-max 2 A at Tj=25 C). Actively clamped for inductive-load turn-off; typ. R_DS(on) = 0.28 Ohm (Tj=25 C, Vin=5 V), max 0.95 Ohm at Tj=150 C.
3	Source	power_in	Source / ground terminal of the internal low-side power MOSFET. Serves as the device ground reference and the return path for both the driver logic and the load current.

Key specifications

Parameter	Value
Manufacturer	Slkor SLKORMICRO Elec
Package	SOT-223-3
Category	PMIC
Pins	3

CAD (KiCad official)

Symbol: SL8402
Footprint: Package_TO_SOT_SMD:SOT-223-3_TabPin2
3D model: SOT-223-3 (KiCad packages3D, STEP)

Provenance

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

Datasheet: Slkor SLKORMICRO Elec datasheet (12 pp, sha256 2c235901b28a80f1, retrieved 2026-08-17, tier: lcsc)
Datasheet language: Chinese. Pin names, descriptions, and specs on this page were extracted and translated to English by ds2sf; the linked PDF is the manufacturer original.
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