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AO3434A

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

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3D Model

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Symbol & Footprint

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Datasheet

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Contents

README

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AO3434A

Alpha Omega Semicon · MOSFETs · SOT-23

AO3434A from Alpha Omega Semicon, 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; gate-source voltage is rated ±12 V maximum, with VGS(th) of 0.7 V min, 1.05 V typ and 1.5 V max at ID=250µA, and the device has typical HBM Class 3A ESD protection.
2 S passive Source; body-diode continuous current is 1.5 A maximum and the thermal-limited continuous drain current is 4 A at TA=25°C.
3 D passive Drain; drain-source voltage is rated 30 V maximum, continuous current 4 A at TA=25°C (3 A at 70°C) and pulsed current 20 A, with RDS(ON) below 52 mΩ at VGS=10V.

Key specifications

Parameter Value
Manufacturer Alpha Omega Semicon
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 1
Gate-Source Voltage VGS -12 12 V 1
Continuous Drain Current ID 4 A TA=25°C 1
Continuous Drain Current ID 3 A TA=70°C 1
Pulsed Drain Current IDM 20 A 1
Power Dissipation PD 1.4 W TA=25°C 1
Power Dissipation PD 0.9 W TA=70°C 1
Junction and Storage Temperature Range TJ, TSTG -55 150 °C 1
Maximum Junction-to-Ambient RθJA 63 80 °C/W t ≤ 10s 1
Maximum Junction-to-Ambient RθJA 100 125 °C/W Steady-State 1
Maximum Junction-to-Lead RθJL 70 90 °C/W Steady-State 1
Drain-Source Breakdown Voltage BVDSS 30 V ID=250µA, VGS=0V 2
Zero Gate Voltage Drain Current IDSS 1 µA VDS=30V, VGS=0V 2
Zero Gate Voltage Drain Current IDSS 5 µA TJ=55°C 2
Gate-Body Leakage Current IGSS -10 10 µA VDS=0V, VGS=±10V 2
Gate Threshold Voltage VGS(th) 0.7 1.05 1.5 V VDS=VGS, ID=250µA 2
On State Drain Current ID(ON) 20 A VGS=10V, VDS=5V 2
Static Drain-Source On-Resistance RDS(ON) 42 52 mΩ VGS=10V, ID=4A 2
Static Drain-Source On-Resistance RDS(ON) 66 82 mΩ TJ=125°C 2
Static Drain-Source On-Resistance RDS(ON) 47 60 mΩ VGS=4.5V, ID=3A 2
Static Drain-Source On-Resistance RDS(ON) 59 78 mΩ VGS=2.5V, ID=2A 2
Diode Forward Voltage VSD 0.75 1 V IS=1A, VGS=0V 2
Maximum Body-Diode Continuous Current IS 1.5 A 2
Total Gate Charge Qg (10V) 5.7 10 nC VGS=10V, VDS=15V, ID=4A 2
Total Gate Charge Qg (4.5V) 2.6 5 nC 2
Forward Transconductance gFS 15 S VDS=5V, ID=4A 2
Input Capacitance Ciss 245 pF VGS=0V, VDS=15V, f=1MHz 2
Output Capacitance Coss 35 pF VGS=0V, VDS=15V, f=1MHz 2
Reverse Transfer Capacitance Crss 20 pF VGS=0V, VDS=15V, f=1MHz 2
Gate Resistance Rg 5 Ω VGS=0V, VDS=0V, f=1MHz 2
Gate Source Charge Qgs 0.5 nC VGS=10V, VDS=15V, ID=4A 2
Gate Drain Charge Qgd 1 nC VGS=10V, VDS=15V, ID=4A 2
Turn-On DelayTime tD(on) 2 ns VGS=10V, VDS=15V, RL=3.75Ω, RGEN=3Ω 2
Turn-On Rise Time tr 3.5 ns VGS=10V, VDS=15V, RL=3.75Ω, RGEN=3Ω 2
Turn-Off DelayTime tD(off) 22 ns VGS=10V, VDS=15V, RL=3.75Ω, RGEN=3Ω 2
Turn-Off Fall Time tf 3.5 ns VGS=10V, VDS=15V, RL=3.75Ω, RGEN=3Ω 2
Body Diode Reverse Recovery Time trr 6.5 ns IF=4A, dI/dt=500A/µs 2
Body Diode Reverse Recovery Charge Qrr 7.5 nC IF=4A, dI/dt=500A/µs 2

CAD (KiCad official)

  • Symbol: AO3434A
  • Footprint: Package_TO_SOT_SMD:SOT-23
  • 3D model: SOT-23 (KiCad packages3D, STEP)
  • 3D model files: ao3434a-etched.step / ao3434a-etched.glb carry the MPN laser-etched on the die in a toggleable Adom.LaserEtch group (Fusion-ready); ao3434a.step / ao3434a.glb are the bare package body.

Provenance

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

  • Datasheet: Alpha Omega Semicon datasheet (5 pp, sha256 77b784899b3f87e9, retrieved 2026-10-09, tier: lcsc)
  • 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