# AP4409AGEM

**APEC(Advanced Power Elec)** · MOSFETs · SOIC-8

AP4409AGEM from APEC(Advanced Power Elec), 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 terminal of the P-channel MOSFET; the device is rated for a drain-source voltage of -35 V and a continuous drain current of -14.5 A at TA=25°C. |
| 2 | S | passive | Source terminal of the P-channel MOSFET; the device is rated for a drain-source voltage of -35 V and a continuous drain current of -14.5 A at TA=25°C. |
| 3 | S | passive | Source terminal of the P-channel MOSFET; the device is rated for a drain-source voltage of -35 V and a continuous drain current of -14.5 A at TA=25°C. |
| 4 | G | input | Gate terminal of the P-channel MOSFET; the gate-source voltage is rated at ±20 V (VGS +20 V in the absolute maximum table). |
| 5 | D | passive | Drain terminal of the P-channel MOSFET; the device is rated for a drain-source voltage of -35 V and a pulsed drain current of -50 A. |
| 6 | D | passive | Drain terminal of the P-channel MOSFET; the device is rated for a drain-source voltage of -35 V and a pulsed drain current of -50 A. |
| 7 | D | passive | Drain terminal of the P-channel MOSFET; the device is rated for a drain-source voltage of -35 V and a pulsed drain current of -50 A. |
| 8 | D | passive | Drain terminal of the P-channel MOSFET; the device is rated for a drain-source voltage of -35 V and a pulsed drain current of -50 A. |

## Key specifications

| Parameter | Value |
|---|---|
| Manufacturer | APEC(Advanced Power Elec) |
| Package | SOIC-8 |
| Category | Transistors |
| 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 Voltage | VDS |  |  | -35 | V |  | 1 |
| Gate-Source Voltage | VGS |  |  | 20 | V |  | 1 |
| Continuous Drain Current | ID@TA=25℃ |  |  | -14.5 | A | VGS @ 10V, TA=25℃ | 1 |
| Continuous Drain Current | ID@TA=70℃ |  |  | -12 | A | VGS @ 10V, TA=70℃ | 1 |
| Pulsed Drain Current | IDM |  |  | -50 | A |  | 1 |
| Total Power Dissipation | PD@TA=25℃ |  |  | 2.5 | W | TA=25℃ | 1 |
| Storage Temperature Range | TSTG | -55 |  | 150 | ℃ |  | 1 |
| Operating Junction Temperature Range | TJ | -55 |  | 150 | ℃ |  | 1 |
| Maximum Thermal Resistance, Junction-ambient | Rthj-a |  |  | 50 | ℃/W | Surface mounted on 1 in² copper pad of FR4 board, t<10sec (footnote 3a) | 1 |
| Thermal Resistance, Junction-ambient (0.003 in² pad) | Rthja |  |  | 125 | ℃/W | Mounted on 0.003 in² pad of 2 oz copper (footnote b) | 2 |
| Drain-Source Breakdown Voltage | BVDSS | -35 |  |  | V | VGS=0V, ID=-250uA | 2 |
| Static Drain-Source On-Resistance | RDS(ON) |  |  | 7.5 | mΩ | VGS=-10V, ID=-7A | 2 |
| Static Drain-Source On-Resistance | RDS(ON) |  |  | 15 | mΩ | VGS=-4V, ID=-7A | 2 |
| Gate Threshold Voltage | VGS(th) | -1 |  | -3 | V | VDS=VGS, ID=-250uA | 2 |
| Drain-Source Leakage Current | IDSS |  |  | -10 | uA | VDS=-30V, VGS=0V | 2 |
| Drain-Source Leakage Current (Tj=70℃) | IDSS |  |  | -25 | uA | Tj=70℃; VDS=-24V, VGS=0V | 2 |
| Gate-Source Leakage | IGSS |  |  | 30 | uA | VGS=+20V, VDS=0V | 2 |
| Total Gate Charge | Qg |  | 58 | 90 | nC | ID=-14A | 2 |
| Input Capacitance | Ciss |  | 4100 | 6600 | pF | VGS=0V | 2 |
| Forward On Voltage | VSD |  |  | -1.3 | V | IS=-14A, VGS=0V | 2 |

## CAD (KiCad official)

- Symbol: `AP4409AGEM`
- Footprint: `Package_SO:SOIC-8_3.9x4.9mm_P1.27mm`
- 3D model: SOIC-8 (KiCad packages3D, STEP)
- 3D model files: `ap4409agem-etched.step` / `ap4409agem-etched.glb` carry the MPN laser-etched on the die in a toggleable `Adom.LaserEtch` group (Fusion-ready); `ap4409agem.step` / `ap4409agem.glb` are the bare package body.

## Provenance

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

- **Datasheet:** [APEC(Advanced Power Elec) datasheet](docs/ap4409agem-datasheet.pdf) (7 pp, sha256 `e4d24a44a11be816`, retrieved 2026-10-30, 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](docs/ap4409agem-datasheet.pdf)