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LM2309

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Leiditech MOSFETs, SOT-23. Pinout cross-checked by two models against the datasheet, KiCad symbol/footprint/3D.

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LM2309

Leiditech · MOSFETs · SOT-23

LM2309 from Leiditech, in a SOT-23. 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 G input Gate of the P-channel enhancement-mode MOSFET, with a maximum gate-source voltage of ±20 V and a gate threshold of -1 V to -3 V at ID=-250uA.
2 S passive Source of the P-channel MOSFET; the body diode forward drop is at most -1.2 V at IS=-1.2 A.
3 D passive Drain of the P-channel MOSFET, rated for BVDSS of -60 V, continuous ID of -1.6 A and pulsed IDM of -6 A.

Key specifications

Parameter Value
Manufacturer Leiditech
Package SOT-23
Category Transistors/Thyristors
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 BVDSS -60 V 1
Gate-Source Voltage VGS 20 V 1
Drain Current (continuous) ID -1.6 A 1
Drain Current (pulsed) IDM -6 A 1
Total Device Dissipation PD 1000 mW TA=25℃ 1
Junction Temperature TJ 150 ℃ 1
Storage Temperature Tstg -55 150 ℃ 1
Drain-Source Breakdown Voltage BVDSS -60 V ID = -250uA, VGS=0V 2
Gate Threshold Voltage VGS(th) -1 -3 V ID = -250uA, VGS= VDS 2
Diode Forward Voltage Drop VSD -1.2 V IS= -1.2A, VGS=0V 2
Zero Gate Voltage Drain Current IDSS -10 uA VGS=0V, VDS= -60V 2
Gate Body Leakage IGSS 100 nA VGS=+20V, VDS=0V 2
Static Drain-Source On-State Resistance RDS(ON) 200 250 mΩ ID= -1.8A, VGS= -10V 2
Static Drain-Source On-State Resistance RDS(ON) 240 300 mΩ ID= -1.4A, VGS= -4.5V 2
Input Capacitance CISS 364 pF VGS=0V, VDS= -25V, f=1MHz 2
Output Capacitance COSS 41 pF VGS=0V, VDS= -25V, f=1MHz 2
Turn-ON Time t(on) 20 ns VDS= -30V, ID= -1A, RGEN=3.3Ω 2
Turn-OFF Time t(off) 5.2 ns VDS= -30V, ID= -1A, RGEN=3.3Ω 2

CAD (KiCad official)

  • Symbol: LM2309
  • Footprint: Package_TO_SOT_SMD:SOT-23
  • 3D model: SOT-23 (KiCad packages3D, STEP)
  • 3D model files: lm2309-etched.step / lm2309-etched.glb carry the MPN laser-etched on the die in a toggleable Adom.LaserEtch group (Fusion-ready); lm2309.step / lm2309.glb are the bare package body.

Provenance

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

  • Datasheet: Leiditech datasheet (3 pp, sha256 ee40e0212c92d999, retrieved 2026-10-28, 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: parts-factory 2.0.0 / extract_pins 0.3, primary claude-sonnet-5-5 (text+vision), consensus claude-opus-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