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UT3400G-AE3-R

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

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UT3400G-AE3-R

UTC Unisonic Tech · MOSFETs · SOT-23

UT3400G-AE3-R from UTC Unisonic Tech, 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 terminal of the N-channel MOSFET, with gate-source voltage rated at ±12 V (VGS) and gate threshold voltage of 0.7 V to 1.4 V.
2 S passive Source terminal of the N-channel MOSFET, serving as the reference for VGS and the source-drain diode, with diode continuous forward current rated at 2.5 A.
3 D passive Drain terminal of the N-channel MOSFET, with drain-source voltage rated at 30 V and continuous drain current rated at 5.8 A.

Key specifications

Parameter Value
Manufacturer UTC Unisonic Tech
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 VDS 30 V 2
Gate-Source Voltage VGS -12 12 V 2
Continuous Drain Current ID 5.8 A 2
Pulsed Drain Current IDM 30 A Repetitive rating, pulse width limited by max junction temperature (Note 2) 2
Power Dissipation PD 1.4 W 2
Junction Temperature TJ 150 °C 2
Storage Temperature TSTG -55 150 °C 2
Gate Threshold Voltage VGS(TH) 0.7 1.1 1.4 V VDS =VGS, ID =250µA 2
Drain to Source On-state Resistance RDS(ON) 22.8 28 mΩ VGS =10V, ID =5.8A 2
Drain to Source On-state Resistance RDS(ON) 27.3 33 mΩ VGS =4.5V, ID =5A 2
Drain to Source On-state Resistance RDS(ON) 43.3 52 mΩ VGS =2.5V, ID =4 A 2
Drain-Source Diode Forward Voltage VSD 0.71 1 V IS=1A, VGS =0V 2
Junction to Ambient (Note) θJA 85 125 °C/W Surface mounted on 1 in2 copper pad of FR4 board with 2oz. 2

CAD (KiCad official)

  • Symbol: UT3400G-AE3-R
  • Footprint: Package_TO_SOT_SMD:SOT-23
  • 3D model: SOT-23 (KiCad packages3D, STEP)
  • 3D model files: ut3400g-ae3-r-etched.step / ut3400g-ae3-r-etched.glb carry the MPN laser-etched on the die in a toggleable Adom.LaserEtch group (Fusion-ready); ut3400g-ae3-r.step / ut3400g-ae3-r.glb are the bare package body.

Provenance

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

  • Datasheet: UTC Unisonic Tech datasheet (3 pp, sha256 0896da03419da12f, retrieved 2026-10-18, 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