# KSA992FTA

**onsemi** · Bipolar (BJT) · TO-92-3

KSA992FTA from onsemi, in a TO-92-3. 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 | Emitter | passive | Emitter of the PNP transistor; the emitter-base voltage is limited to −5 V (VEBO) per the maximum ratings. |
| 2 | Collector | passive | Collector of the PNP transistor; rated for a collector-base and collector-emitter voltage of −120 V and a collector current of −50 mA maximum. |
| 3 | Base | passive | Base of the PNP transistor; base current is limited to −10 mA maximum per the maximum ratings. |

## Key specifications

| Parameter | Value |
|---|---|
| Manufacturer | onsemi |
| Package | TO-92-3 |
| 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 Cut-Off Current | ICBO |  |  | -50 | nA | VCB = −120 V, IE = 0 | 2 |
| Collector Cut-Off Current | ICEO |  |  | -1 | A | VCE = −100 V, IB = 0 | 2 |
| Emitter Cut-Off Current | IEBO |  |  | -50 | nA | VEB = −5 V, IC = 0 | 2 |
| DC Current Gain | hFE1 | 150 | 500 |  | - | VCE = −6 V, IC = −0.1 mA | 2 |
| DC Current Gain | hFE2 | 200 | 500 | 800 | - | VCE = −6 V, IC = −1 mA | 2 |
| DC Current Gain, class F (suffix FTA, marking F) | hFE2 | 300 |  | 600 | - | hFE CLASSIFICATION table, class F (test conditions as hFE2 row) | 2 |
| Base−Emitter On Voltage | VBE(on) | -0.55 | -0.61 | -0.65 | V | VCE = −6 V, IC = −1 mA | 2 |
| Collector−Emitter Saturation Voltage | VCE(sat) |  | -0.09 | -0.3 | V | IC = −10 mA, IB = −1 mA | 2 |
| Current Gain Bandwidth Product | fT | 50 | 100 |  | MHz | VCE = −6 V, IC = −1 mA | 2 |
| Output Capacitance | Cob |  | 2 | 3 | pF | VCB = −30 V, IE = 0, f = 1 MHz | 2 |
| Collector-Base Voltage | VCBO |  |  | -120 | V |  | 1 |
| Collector-Emitter Voltage | VCEO |  |  | -120 | V |  | 1 |
| Emitter-Base Voltage | VEBO |  |  | -5 | V |  | 1 |
| Collector Current | IC |  |  | -50 | mA |  | 1 |
| Base Current | IB |  |  | -10 | mA |  | 1 |
| Junction Temperature | TJ |  |  | 150 | °C |  | 1 |
| Storage Temperature | TSTG | -55 |  | 150 | °C |  | 1 |
| Power Dissipation | PD |  |  | 500 | mW | TA = 25°C, FR-4 PCB with minimum land pattern (Note 1) | 1 |
| Thermal Resistance, Junction-to-Ambient | RJA |  |  | 250 | °C/W | FR-4 PCB with minimum land pattern (Note 1) | 1 |

## CAD (KiCad official)

- Symbol: `KSA992FTA`
- Footprint: `Package_TO_SOT_THT:TO-92_Inline`
- 3D model: TO-92-3 (KiCad packages3D, STEP)
- 3D model files: `ksa992fta-etched.step` / `ksa992fta-etched.glb` carry the MPN laser-etched on the die in a toggleable `Adom.LaserEtch` group (Fusion-ready); `ksa992fta.step` / `ksa992fta.glb` are the bare package body.

## Provenance

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

- **Datasheet:** [onsemi datasheet](https://jlcpcb.com/api/file/downloadByFileSystemAccessId/8588928927372333056) (7 pp, sha256 `9ced52b3e94cb160`, 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](docs/ksa992fta-datasheet.pdf)