# BVSS123LT1G

**onsemi** · MOSFETs · SOT-23

BVSS123LT1G from onsemi, 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 | Gate | input | Gate control terminal; VGS is limited to ±20 Vdc continuous and ±40 Vpk non-repetitive, with VGS(th) of 1.6 to 2.6 Vdc. |
| 2 | Source | passive | Source terminal and reference for the gate and drain ratings; the datasheet gives no separate source-pin limit. |
| 3 | Drain | passive | Drain terminal; VDSS is 100 Vdc, with continuous drain current ID of 0.17 Adc and pulsed IDM of 0.68 Adc, and the package power dissipation may lower the continuous current. |

## Key specifications

| Parameter | Value |
|---|---|
| Manufacturer | onsemi |
| 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 |
|---|---|---|---|---|---|---|---|
| Drain-Source Voltage | VDSS |  |  | 100 | Vdc |  | 1 |
| Gate-Source Voltage, Continuous | VGS | -20 |  | 20 | Vdc |  | 1 |
| Gate-Source Voltage, Non-repetitive | VGSM | -40 |  | 40 | Vpk | tp ≤ 50 s | 1 |
| Drain Current, Continuous | ID |  |  | 0.17 | Adc | Note 1 | 1 |
| Drain Current, Pulsed | IDM |  |  | 0.68 | Adc | Note 2: Pulse Width 300 s, Duty Cycle 2.0% | 1 |
| Total Device Dissipation, FR-5 Board | PD |  |  | 225 | mW | TA = 25°C | 1 |
| Thermal Resistance, Junction-to-Ambient | RJA |  |  | 556 | °C/W |  | 1 |
| Junction and Storage Temperature | TJ, Tstg | -55 |  | 150 | °C |  | 1 |
| Drain-Source Breakdown Voltage | V(BR)DSS | 100 |  |  | Vdc | VGS = 0, ID = 250 Adc | 2 |
| Zero Gate Voltage Drain Current | IDSS |  |  | 15 | Adc | VGS = 0, VDS = 100 Vdc, TJ = 25°C | 2 |
| Zero Gate Voltage Drain Current | IDSS |  |  | 60 | Adc | VGS = 0, VDS = 100 Vdc, TJ = 125°C | 2 |
| Gate-Body Leakage Current | IGSS |  |  | 50 | nAdc | VGS = 20 Vdc, VDS = 0 | 2 |
| Gate Threshold Voltage | VGS(th) | 1.6 |  | 2.6 | Vdc | VDS = VGS, ID = 1.0 mAdc | 2 |
| Static Drain-Source On-Resistance | rDS(on) |  |  | 6 |  | VGS = 10 Vdc, ID = 100 mAdc | 2 |
| Forward Transconductance | gfs | 80 |  |  | mmhos | VDS = 25 Vdc, ID = 100 mAdc | 2 |
| Diode Forward On-Voltage | VSD |  |  | 1.3 | V | ID = 0.34 Adc, VGS = 0 Vdc | 2 |

## CAD (KiCad official)

- Symbol: `BVSS123LT1G`
- Footprint: `Package_TO_SOT_SMD:SOT-23`
- 3D model: SOT-23 (KiCad packages3D, STEP)
- 3D model files: `bvss123lt1g-etched.step` / `bvss123lt1g-etched.glb` carry the MPN laser-etched on the die in a toggleable `Adom.LaserEtch` group (Fusion-ready); `bvss123lt1g.step` / `bvss123lt1g.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/8588914893479424000) (6 pp, sha256 `51e425af978a89b9`, retrieved 2026-10-17, 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/bvss123lt1g-datasheet.pdf)