component
AO4404B
Public Made by Adomby adom
Alpha Omega Semicon MOSFETs, SOIC-8. Pinout cross-checked by two models against the datasheet, KiCad symbol/footprint/3D.
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AO4404B
Alpha Omega Semicon · MOSFETs · SOIC-8
AO4404B 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 | S | passive | Source of the N-channel MOSFET (pin 1 is the dot-marked corner on the source side of the package). |
| 2 | S | passive | Source of the N-channel MOSFET, tied to the other source pins. |
| 3 | S | passive | Source of the N-channel MOSFET, tied to the other source pins. |
| 4 | G | input | Gate; the part is driven with VGS up to ±12V (absolute maximum) and works with gate voltages as low as 2.5V. |
| 5 | D | passive | Drain of the N-channel MOSFET (VDS 30V maximum), tied to the other drain pins. |
| 6 | D | passive | Drain of the N-channel MOSFET (VDS 30V maximum), tied to the other drain pins. |
| 7 | D | passive | Drain of the N-channel MOSFET (VDS 30V maximum), tied to the other drain pins. |
| 8 | D | passive | Drain of the N-channel MOSFET (VDS 30V maximum), tied to the other drain pins. |
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 | TJ=55°C | 2 | ||
| Gate-Body leakage current | IGSS | 100 | nA | VDS=0V, VGS=±12V | 2 | ||
| Gate Threshold Voltage | VGS(th) | 0.65 | 1.05 | 1.45 | V | VDS=VGS ID=250µA | 2 |
| On state drain current | ID(ON) | 60 | A | VGS=4.5V, VDS=5V | 2 | ||
| Static Drain-Source On-Resistance | RDS(ON) | 17.7 | 24 | mΩ | VGS=10V, ID=8.5A | 2 | |
| Static Drain-Source On-Resistance | RDS(ON) | 28 | 34 | mΩ | TJ=125°C | 2 | |
| Static Drain-Source On-Resistance | RDS(ON) | 19 | 30 | mΩ | VGS=4.5V, ID=8.5A | 2 | |
| Static Drain-Source On-Resistance | RDS(ON) | 24 | 48 | mΩ | VGS=2.5V, ID=5A | 2 | |
| Diode Forward Voltage | VSD | 0.7 | 1 | V | IS=1A,VGS=0V | 2 | |
| Maximum Body-Diode Continuous Current | IS | 4 | A | 2 | |||
| Gate resistance | Rg | 1.5 | 3 | 4.5 | Ω | VGS=0V, VDS=0V, f=1MHz | 2 |
| Total Gate Charge | Qg | 6 | 7 | nC | VGS=4.5V, VDS=15V, ID=8.5A | 2 | |
| Drain-Source Voltage | VDS | 30 | V | TA=25°C unless otherwise noted | 1 | ||
| Gate-Source Voltage | VGS | -12 | 12 | V | 1 | ||
| Continuous Drain Current | ID | 8.5 | A | TA=25°C | 1 | ||
| Continuous Drain Current | ID | 7.1 | A | TA=70°C | 1 | ||
| Pulsed Drain Current | IDM | 60 | A | 1 | |||
| Power Dissipation | PD | 3.1 | W | TA=25°C | 1 | ||
| Power Dissipation | PD | 2 | W | TA=70°C | 1 | ||
| Junction and Storage Temperature Range | TJ, TSTG | -55 | 150 | °C | 1 | ||
| Maximum Junction-to-Ambient (t ≤ 10s) | RθJA | 31 | 40 | °C/W | t ≤ 10s | 1 | |
| Maximum Junction-to-Ambient (Steady-State) | RθJA | 59 | 75 | °C/W | Steady-State | 1 | |
| Maximum Junction-to-Lead (Steady-State) | RθJL | 16 | 24 | °C/W | Steady-State | 1 |
CAD (KiCad official)
- Symbol:
AO4404B - Footprint:
Package_SO:SOIC-8_3.9x4.9mm_P1.27mm - 3D model: SOIC-8 (KiCad packages3D, STEP)
- 3D model files:
ao4404b-etched.step/ao4404b-etched.glbcarry the MPN laser-etched on the die in a toggleableAdom.LaserEtchgroup (Fusion-ready);ao4404b.step/ao4404b.glbare the bare package body.
Provenance
Data extracted from the manufacturer datasheet, not a distributor listing:
- Datasheet: Alpha Omega Semicon datasheet (6 pp, sha256
1dc4bedd7e403966, retrieved 2026-10-18, tier: lcsc) - Extractor: parts-factory
2.0.0/extract_pins 0.3, primaryclaude-sonnet-5-5(text+vision), consensusclaude-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).
# AO4404B
**Alpha Omega Semicon** · MOSFETs · SOIC-8
AO4404B 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 | S | passive | Source of the N-channel MOSFET (pin 1 is the dot-marked corner on the source side of the package). |
| 2 | S | passive | Source of the N-channel MOSFET, tied to the other source pins. |
| 3 | S | passive | Source of the N-channel MOSFET, tied to the other source pins. |
| 4 | G | input | Gate; the part is driven with VGS up to ±12V (absolute maximum) and works with gate voltages as low as 2.5V. |
| 5 | D | passive | Drain of the N-channel MOSFET (VDS 30V maximum), tied to the other drain pins. |
| 6 | D | passive | Drain of the N-channel MOSFET (VDS 30V maximum), tied to the other drain pins. |
| 7 | D | passive | Drain of the N-channel MOSFET (VDS 30V maximum), tied to the other drain pins. |
| 8 | D | passive | Drain of the N-channel MOSFET (VDS 30V maximum), tied to the other drain pins. |
## 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 | TJ=55°C | 2 |
| Gate-Body leakage current | IGSS | | | 100 | nA | VDS=0V, VGS=±12V | 2 |
| Gate Threshold Voltage | VGS(th) | 0.65 | 1.05 | 1.45 | V | VDS=VGS ID=250µA | 2 |
| On state drain current | ID(ON) | 60 | | | A | VGS=4.5V, VDS=5V | 2 |
| Static Drain-Source On-Resistance | RDS(ON) | | 17.7 | 24 | mΩ | VGS=10V, ID=8.5A | 2 |
| Static Drain-Source On-Resistance | RDS(ON) | | 28 | 34 | mΩ | TJ=125°C | 2 |
| Static Drain-Source On-Resistance | RDS(ON) | | 19 | 30 | mΩ | VGS=4.5V, ID=8.5A | 2 |
| Static Drain-Source On-Resistance | RDS(ON) | | 24 | 48 | mΩ | VGS=2.5V, ID=5A | 2 |
| Diode Forward Voltage | VSD | | 0.7 | 1 | V | IS=1A,VGS=0V | 2 |
| Maximum Body-Diode Continuous Current | IS | | | 4 | A | | 2 |
| Gate resistance | Rg | 1.5 | 3 | 4.5 | Ω | VGS=0V, VDS=0V, f=1MHz | 2 |
| Total Gate Charge | Qg | | 6 | 7 | nC | VGS=4.5V, VDS=15V, ID=8.5A | 2 |
| Drain-Source Voltage | VDS | | | 30 | V | TA=25°C unless otherwise noted | 1 |
| Gate-Source Voltage | VGS | -12 | | 12 | V | | 1 |
| Continuous Drain Current | ID | | | 8.5 | A | TA=25°C | 1 |
| Continuous Drain Current | ID | | | 7.1 | A | TA=70°C | 1 |
| Pulsed Drain Current | IDM | | | 60 | A | | 1 |
| Power Dissipation | PD | | | 3.1 | W | TA=25°C | 1 |
| Power Dissipation | PD | | | 2 | W | TA=70°C | 1 |
| Junction and Storage Temperature Range | TJ, TSTG | -55 | | 150 | °C | | 1 |
| Maximum Junction-to-Ambient (t ≤ 10s) | RθJA | | 31 | 40 | °C/W | t ≤ 10s | 1 |
| Maximum Junction-to-Ambient (Steady-State) | RθJA | | 59 | 75 | °C/W | Steady-State | 1 |
| Maximum Junction-to-Lead (Steady-State) | RθJL | | 16 | 24 | °C/W | Steady-State | 1 |
## CAD (KiCad official)
- Symbol: `AO4404B`
- Footprint: `Package_SO:SOIC-8_3.9x4.9mm_P1.27mm`
- 3D model: SOIC-8 (KiCad packages3D, STEP)
- 3D model files: `ao4404b-etched.step` / `ao4404b-etched.glb` carry the MPN laser-etched on the die in a toggleable `Adom.LaserEtch` group (Fusion-ready); `ao4404b.step` / `ao4404b.glb` are the bare package body.
## Provenance
Data extracted from the manufacturer datasheet, not a distributor listing:
- **Datasheet:** [Alpha Omega Semicon datasheet](https://jlcpcb.com/api/file/downloadByFileSystemAccessId/8588879912752701440) (6 pp, sha256 `1dc4bedd7e403966`, retrieved 2026-10-18, 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](docs/ao4404b-datasheet.pdf)