# MMBTA92-MS

**MSKSEMI** · Bipolar (BJT) · SOT-23

MMBTA92-MS from MSKSEMI, 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 | BASE | input | Base terminal of the PNP high-voltage transistor (MMBTA92-MS), listed as pin 1 in the SOT-23 pinout. |
| 2 | EMITTER | passive | Emitter terminal of the PNP high-voltage transistor (MMBTA92-MS), listed as pin 2 in the SOT-23 pinout. |
| 3 | COLLECTOR | passive | Collector terminal of the PNP high-voltage transistor (MMBTA92-MS), listed as pin 3 in the SOT-23 pinout; the datasheet's maximum collector current is -200 mA continuous and -500 mA pulsed. |

## Key specifications

| Parameter | Value |
|---|---|
| Manufacturer | MSKSEMI |
| 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 |
|---|---|---|---|---|---|---|---|
| Collector-base voltage | VCBO | -300 |  |  | V |  | 2 |
| Collector-emitter voltage | VCEO | -300 |  |  | V |  | 2 |
| Emitter-base voltage | VEBO | -5 |  |  | V |  | 2 |
| Collector current, continuous | IC | -200 |  |  | mA |  | 2 |
| Collector current, pulsed | ICM | -500 |  |  | mA |  | 2 |
| Collector power dissipation | PC |  |  | 300 | mW |  | 2 |
| Junction temperature | Tj |  |  | 150 | ℃ |  | 2 |
| Storage temperature | Tstg | -55 |  | 150 | ℃ |  | 2 |
| Thermal resistance, junction to ambient | RӨJA |  |  | 417 | ℃/W |  | 2 |
| Collector-base breakdown voltage | V(BR)CBO | -300 |  |  | V | IC= -100μA, IE=0 | 2 |
| Collector-emitter breakdown voltage | V(BR)CEO | -300 |  |  | V | IC= -1mA, IB=0 | 2 |
| Emitter-base breakdown voltage | V(BR)EBO | -5 |  |  | V | IE= -100μA, IC=0 | 2 |
| Collector cut-off current | ICBO |  |  | -0.25 | μA | VCB=-200V, IE=0 | 2 |
| Emitter cut-off current | IEBO |  |  | -0.1 | μA | VEB= -5V, IC=0 | 2 |
| DC current gain hFE(1) | hFE(1) | 60 |  |  |  | VCE= -10V, IC= -1mA | 2 |
| DC current gain hFE(2) | hFE(2) | 100 |  | 200 |  | VCE= -10V, IC=-10mA | 2 |
| DC current gain hFE(3) | hFE(3) | 60 |  |  |  | VCE= -10V, IC=-30mA | 2 |
| Collector-emitter saturation voltage | VCE(sat) |  |  | -0.2 | V | IC=-20mA, IB= -2mA | 2 |
| Base-emitter saturation voltage | VBE(sat) |  |  | -0.9 | V | IC= -20mA, IB= -2mA | 2 |
| Transition frequency | fT | 50 |  |  | MHz | VCE=-20V, IC= -10mA, f=30MHz | 2 |

## CAD (KiCad official)

- Symbol: `MMBTA92-MS`
- Footprint: `Package_TO_SOT_SMD:SOT-23`
- 3D model: SOT-23 (KiCad packages3D, STEP)
- 3D model files: `mmbta92-ms-etched.step` / `mmbta92-ms-etched.glb` carry the MPN laser-etched on the die in a toggleable `Adom.LaserEtch` group (Fusion-ready); `mmbta92-ms.step` / `mmbta92-ms.glb` are the bare package body.

## Provenance

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

- **Datasheet:** [MSKSEMI datasheet](https://jlcpcb.com/api/file/downloadByFileSystemAccessId/8590239877754085376) (5 pp, sha256 `2b7a20d77d22972d`, retrieved 2026-10-09, 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/mmbta92-ms-datasheet.pdf)