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Contents

README

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SSM3K344R

TOSHIBA · MOSFETs · SOT-23F

SSM3K344R from TOSHIBA, in a SOT-23F. 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 terminal of the N-channel MOSFET; gate-source voltage is limited to ±8 V (VGSS absolute maximum rating).
2 Source passive Source terminal of the N-channel MOSFET, the reference for VGS and the drain current path; the device is sensitive to electrostatic discharge.
3 Drain passive Drain terminal of the N-channel MOSFET; drain-source voltage is limited to 20 V (VDSS absolute maximum rating).

Key specifications

Parameter Value
Manufacturer TOSHIBA
Package SOT-23F
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 breakdown voltage V(BR)DSS 20 V ID = 1 mA, VGS = 0 V 3
Drain-source breakdown voltage (VGS reverse bias mode) V(BR)DSX 15 V ID = 1 mA, VGS = -5 V 3
Drain cut-off current IDSS 1 µA VDS = 10 V, VGS = 0 V 3
Gate leakage current IGSS -10 10 µA VGS = ±8 V, VGS = 0 V 3
Gate threshold voltage Vth 0.4 1 V VDS = 3 V, ID = 1 mA 3
Drain-source on-resistance RDS(ON) 102 232 mΩ ID = 0.5 A, VGS = 1.5 V 3
Drain-source on-resistance RDS(ON) 81 139 mΩ ID = 0.5 A, VGS = 1.8 V 3
Drain-source on-resistance RDS(ON) 63 91 mΩ ID = 1.0 A, VGS = 2.5 V 3
Drain-source on-resistance RDS(ON) 51 71 mΩ ID = 3.0 A, VGS = 4.5 V 3
Diode forward voltage VDSF -0.8 -1.2 V ID = -3.0 A, VGS = 0 V 4
Drain-source voltage VDSS 20 V 2
Gate-source voltage VGSS -8 8 V 2
Channel temperature Tch 150 °C Ensure channel temperature does not exceed 150 °C (Note 1) 2
Storage temperature Tstg -55 150 °C 2

CAD (KiCad official)

  • Symbol: SSM3K344R
  • Footprint: Package_TO_SOT_SMD:SOT-23
  • 3D model: SOT-23F (KiCad packages3D, STEP)
  • 3D model files: ssm3k344r-etched.step / ssm3k344r-etched.glb carry the MPN laser-etched on the die in a toggleable Adom.LaserEtch group (Fusion-ready); ssm3k344r.step / ssm3k344r.glb are the bare package body.

Provenance

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

  • Datasheet: TOSHIBA datasheet (9 pp, sha256 df519c6c3ad619fb, retrieved 2026-10-17, 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