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AO4838

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Alpha Omega Semicon MOSFETs, SOIC-8. Pinout cross-checked by two models against the datasheet, KiCad symbol/footprint/3D.

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AO4838

Alpha Omega Semicon · MOSFETs · SOIC-8

AO4838 from Alpha Omega Semicon, in a SOIC-8. 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 S1 passive Source of MOSFET 1; the gate-source voltage is limited to ±20 V per the absolute maximum ratings.
2 G1 input Gate of MOSFET 1; VGS is limited to ±20 V per the absolute maximum ratings.
3 S2 passive Source of MOSFET 2; the gate-source voltage is limited to ±20 V per the absolute maximum ratings.
4 G2 input Gate of MOSFET 2; VGS is limited to ±20 V per the absolute maximum ratings.
5 D2 passive Drain of MOSFET 2; drain-source voltage is rated 30 V maximum per the absolute maximum ratings.
6 D2 passive Drain of MOSFET 2 (internally tied to pin 5); drain-source voltage is rated 30 V maximum per the absolute maximum ratings.
7 D1 passive Drain of MOSFET 1 (internally tied to pin 8); drain-source voltage is rated 30 V maximum per the absolute maximum ratings.
8 D1 passive Drain of MOSFET 1; drain-source voltage is rated 30 V maximum per the absolute maximum ratings.

Key specifications

Parameter Value
Manufacturer Alpha Omega Semicon
Package SOIC-8
Category Transistors/Thyristors
Pins 8

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 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 VDS=30V, VGS=0V, TJ=55°C 2
Gate-Body leakage current IGSS 100 nA VDS=0V, VGS=±20V 2
Gate Threshold Voltage VGS(th) 1.5 2 2.6 V VDS=VGS ID=250µA 2
On state drain current ID(ON) 60 A VGS=10V, VDS=5V 2
Static Drain-Source On-Resistance RDS(ON) 8 9.6 mΩ VGS=10V, ID=11A 2
Static Drain-Source On-Resistance RDS(ON) 11.5 14 mΩ TJ=125°C, VGS=10V, ID=11A 2
Static Drain-Source On-Resistance RDS(ON) 10.4 13 mΩ VGS=4.5V, ID=10A 2
Forward Transconductance gFS 50 S VDS=5V, ID=11A 2
Diode Forward Voltage VSD 0.7 1 V IS=1A, VGS=0V 2
Maximum Body-Diode Continuous Current IS 2.5 A 2
Input Capacitance Ciss 860 1080 1300 pF VGS=0V, VDS=15V, f=1MHz 2
Output Capacitance Coss 125 180 240 pF VGS=0V, VDS=15V, f=1MHz 2
Reverse Transfer Capacitance Crss 65 110 160 pF VGS=0V, VDS=15V, f=1MHz 2
Gate resistance Rg 0.5 1 1.5 Ω VGS=0V, VDS=0V, f=1MHz 2
Total Gate Charge (10V) Qg 14 18 22 nC VGS=10V, VDS=15V, ID=11A 2
Total Gate Charge (4.5V) Qg 6.4 8 9.6 nC 2
Body Diode Reverse Recovery Charge Qrr 10 13 16 nC IF=11A, dI/dt=500A/µs 2
Body Diode Reverse Recovery Time trr 7 8.5 10 ns IF=11A, dI/dt=500A/µs 2
Gate Source Charge Qgs 3.4 nC 2
Gate Drain Charge Qgd 3 nC 2
Turn-On DelayTime tD(on) 6 ns VGS=10V, VDS=15V, RL=1.35Ω, RGEN=3Ω 2
Turn-On Rise Time tr 3 ns VGS=10V, VDS=15V, RL=1.35Ω, RGEN=3Ω 2
Turn-Off DelayTime tD(off) 21 ns VGS=10V, VDS=15V, RL=1.35Ω, RGEN=3Ω 2
Turn-Off Fall Time tf 3 ns VGS=10V, VDS=15V, RL=1.35Ω, RGEN=3Ω 2
Drain-Source Voltage VDS 30 V 1
Gate-Source Voltage VGS -20 20 V 1
Continuous Drain Current ID 11 A TA=25°C 1
Continuous Drain Current ID 9 A TA=70°C 1
Pulsed Drain Current IDM 60 A 1
Avalanche Current IAS, IAR 30 A 1
Avalanche energy EAS, EAR 45 mJ L=0.1mH 1
Power Dissipation PD 2 W TA=25°C 1
Power Dissipation PD 1.3 W TA=70°C 1
Junction and Storage Temperature Range TJ, TSTG -55 150 °C 1
Maximum Junction-to-Ambient thermal resistance RθJA 90 °C/W 5

CAD (KiCad official)

  • Symbol: AO4838
  • Footprint: Package_SO:SOIC-8_3.9x4.9mm_P1.27mm
  • 3D model: SOIC-8 (KiCad packages3D, STEP)
  • 3D model files: ao4838-etched.step / ao4838-etched.glb carry the MPN laser-etched on the die in a toggleable Adom.LaserEtch group (Fusion-ready); ao4838.step / ao4838.glb are the bare package body.

Provenance

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

  • Datasheet: Alpha Omega Semicon datasheet (6 pp, sha256 2f6b5c7a702935ca, 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