SL3139T from Slkor(SLKORMICRO Elec.), in a SOT-523. Pinout and pin descriptions extracted from the manufacturer datasheet (extract_pins, cross-checked by a second model); symbol, footprint, and 3D from KiCad-official CAD.

Pinout

Pin	Name	Type	Function
1	GATE	input	Gate of the P-channel MOSFET, rated for VGS of ±12 V (typical) and driven at low logic level, with RDS(on) specified at VGS = -1.8 V, -2.5 V and -4.5 V.
2	SOURCE	passive	Source of the P-channel MOSFET, serving as the reference for the VGS ratings and the body diode (VSD -1.2 V at IS = -0.5 A, VGS = 0 V).
3	DRAIN	passive	Drain of the P-channel MOSFET, rated for a drain-source voltage of -20 V, a continuous drain current of -0.66 A and a pulsed drain current of -1.2 A (tp = 10 µs).

Key specifications

Parameter	Value
Manufacturer	Slkor(SLKORMICRO Elec.)
Package	SOT-523
Category	Triode/MOS Tube/Transistor
Pins	3

Electrical characteristics

Limits as printed in the datasheet (page.json metadata.characteristics carries them as data).

Parameter	Symbol	Min	Typ	Max	Unit	Conditions	Page
Drain-Source Voltage	VDS			-20	V		1
Gate-Source Voltage	VGS	-12		12	V		1
Continuous Drain Current (note 1)	ID			-0.66	A	note 1	1
Pulsed Drain Current	IDM			-1.2	A	tp=10μs	1
Power Dissipation (note 1)	PD			150	mW	note 1	1
Thermal Resistance from Junction to Ambient (note 1)	RθJA			833	℃/W	note 1	1
Junction Temperature	TJ			150	℃		1
Storage Temperature	TSTG	-55		150	℃		1
Lead Temperature for Soldering Purposes	TL			260	℃	1/8" from case for 10 s	1
Drain-source breakdown voltage	V(BR)DSS	-20			V	VGS = 0V, ID =-250µA	2
Zero gate voltage drain current	IDSS			-1	µA	VDS =-20V, VGS = 0V	2
Gate-body leakage current	IGSS	-20		20	µA	VGS =±10V, VDS = 0V	2
Gate threshold voltage (note 2)	VGS(th)	-0.35		-1.1	V	VDS =VGS, ID =-250µA	2
Drain-source on-resistance (note 2)	RDS(on)			520	mΩ	VGS =-4.5V, ID =-1A	2
Drain-source on-resistance (note 2)	RDS(on)			700	mΩ	VGS =-2.5V, ID =-0.8A	2
Drain-source on-resistance (note 2)	RDS(on)			950	mΩ	VGS =-1.8V, ID =-0.5A	2
Diode forward voltage	VSD			-1.2	V	IS=-0.5A, VGS = 0V	2
Input capacitance	Ciss		113	170	pF		2
Output capacitance	Coss		15	25	pF		2
Reverse transfer capacitance	Crss		9	15	pF	VDS =-16V, VGS =0V, f =1MHz	2
Forward transconductance (note 2)	gFS		1.2		S	VDS =-10V, ID =-0.54A	2
Turn-on delay time (note 3)	td(on)		9		ns		2
Turn-on rise time (note 3)	tr		5.8		ns		2
Turn-off delay time (note 3)	td(off)		32.7		ns		2
Turn-off fall time (note 3)	tf		20.3		ns	VGS=-4.5V, VDS=-10V, ID =-200mA, RGEN=10Ω	2

CAD (KiCad official)

Symbol: SL3139T
Footprint: Package_TO_SOT_SMD:SOT-523
3D model: SOT-523, generated from the KiCad footprint (body from the F.Fab outline, terminals on the pads, 0.8 mm nominal SOT-523 height). Neither the vendor nor KiCad ships a 3D model for this package, so the dimensions are nominal, not the manufacturer's CAD (STEP)
3D model files: sl3139t-etched.step / sl3139t-etched.glb carry the MPN laser-etched on the die in a toggleable Adom.LaserEtch group (Fusion-ready); sl3139t.step / sl3139t.glb are the bare package body.

Provenance

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

Datasheet: Slkor(SLKORMICRO Elec.) datasheet (3 pp, sha256 bb97a55999c0f964, retrieved 2026-11-04, tier: lcsc)
Extractor: parts-factory 2.0.0 / extract_pins 0.3, primary claude-haiku-5-5 (text), consensus claude-sonnet-5-5 (agreed), guards: pin_guards 0.1: passed. Pins are checked against the footprint pad set and their cited datasheet pages before publish.
CAD: KiCad official libraries (CC-BY-SA 4.0).

Datasheet PDF

SL3139T

Verified SL3139T

Verification log 1 record

3D Model

Symbol & Footprint

Schematic Symbol

PCB Footprint

Datasheet

README