# TM9926A

**Tritech MOS** · MOSFETs · SOP-8

TM9926A from Tritech MOS, in a SOP-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 (N-channel), drain-source rated 20V with 8.0A continuous drain current at TA=25C. |
| 2 | G1 | input | Gate of MOSFET 1, rated for gate-source voltage of ±12V with threshold of 0.4V to 1.0V at 250uA. |
| 3 | S2 | passive | Source of MOSFET 2 (N-channel), drain-source rated 20V with 8.0A continuous drain current at TA=25C. |
| 4 | G2 | input | Gate of MOSFET 2, rated for gate-source voltage of ±12V with threshold of 0.4V to 1.0V at 250uA. |
| 5 | D2 | passive | Drain of MOSFET 2, rated for 20V drain-source voltage and 25A pulsed drain current (pins 5 and 6 are both D2). |
| 6 | D2 | passive | Drain of MOSFET 2, rated for 20V drain-source voltage and 25A pulsed drain current (pins 5 and 6 are both D2). |
| 7 | D1 | passive | Drain of MOSFET 1, rated for 20V drain-source voltage and 25A pulsed drain current (pins 7 and 8 are both D1). |
| 8 | D1 | passive | Drain of MOSFET 1, rated for 20V drain-source voltage and 25A pulsed drain current (pins 7 and 8 are both D1). |

## Key specifications

| Parameter | Value |
|---|---|
| Manufacturer | Tritech MOS |
| Package | SOP-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 Voltage | VDS |  |  | 20 | V |  | 1 |
| Gate-Source Voltage | VGS | -12 |  | 12 | V |  | 1 |
| Continuous Drain Current | ID@TA=25℃ |  |  | 8 | A | VGS @ 4.5V | 1 |
| Continuous Drain Current | ID@TA=70℃ |  |  | 4.8 | A | VGS @ 4.5V | 1 |
| Pulsed Drain Current | IDM |  |  | 25 | A |  | 1 |
| Total Power Dissipation | PD@TA=25℃ |  |  | 1.65 | W |  | 1 |
| Storage Temperature Range | TSTG | -55 |  | 150 | ℃ |  | 1 |
| Operating Junction Temperature Range | TJ | -55 |  | 150 | ℃ |  | 1 |
| Thermal Resistance Junction-ambient | RθJA |  |  | 78 | ℃/W |  | 1 |
| Drain-Source Breakdown Voltage | V(BR)DSS | 20 |  |  | V | VGS=0V, ID=250μA | 2 |
| Zero Gate Voltage Drain Current | IDSS |  |  | 1 | μA | VDS=20V, VGS=0V | 2 |
| Gate to Body Leakage Current | IGSS | -100 |  | 100 | nA | VDS=0V, VGS =±12V | 2 |
| Gate Threshold Voltage | VGS(th) | 0.4 | 0.7 | 1 | V | VDS=VGS, ID=250μA | 2 |
| Static Drain-Source on-Resistance | RDS(on) |  | 20 | 28 | mΩ | VGS=4.5V, ID=6A | 2 |
| Static Drain-Source on-Resistance | RDS(on) |  | 25.5 | 38 | mΩ | VGS=2.5V, ID=5A | 2 |
| Maximum Continuous Drain to Source Diode Forward Current | IS |  |  | 8 | A |  | 2 |
| Maximum Pulsed Drain to Source Diode Forward Current | ISM |  |  | 24 | A |  | 2 |
| Drain to Source Diode Forward Voltage | VSD |  |  | 1.2 | V | VGS=0V, IS=6A | 2 |

## CAD (KiCad official)

- Symbol: `TM9926A`
- Footprint: `Package_SO:SOIC-8_3.9x4.9mm_P1.27mm`
- 3D model: SOP-8 (KiCad packages3D, STEP)
- 3D model files: `tm9926a-etched.step` / `tm9926a-etched.glb` carry the MPN laser-etched on the die in a toggleable `Adom.LaserEtch` group (Fusion-ready); `tm9926a.step` / `tm9926a.glb` are the bare package body.

## Provenance

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

- **Datasheet:** [Tritech MOS datasheet](https://jlcpcb.com/api/file/downloadByFileSystemAccessId/8590906742358155264) (5 pp, sha256 `ddb75120b4d241ed`, 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/tm9926a-datasheet.pdf)