# BSS123-TP

**MCC(Micro Commercial Components)** · MOSFETs · SOT-23

BSS123-TP from MCC(Micro Commercial Components), 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 | G | input | Gate; voltage-controlled input with a maximum gate-source voltage of ±20 V and a gate threshold of 1.0 V min to 2.8 V max at ID=250 µA. |
| 2 | S | passive | Source terminal of the N-channel MOSFET; the body diode forward voltage is 1.3 V max at IS=0.34 A. |
| 3 | D | passive | Drain; rated for 100 V drain-source voltage and 0.17 A continuous (0.68 A pulsed) drain current. |

## Key specifications

| Parameter | Value |
|---|---|
| Manufacturer | MCC(Micro Commercial Components) |
| 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 Breakdown Voltage | V(BR)DSS | 100 |  |  | V | VGS=0V, ID=250µA | 2 |
| Gate-Threshold Voltage | VGS(th) | 1 |  | 2.8 | V | VDS=VGS, ID=250µA | 2 |
| Gate-Body Leakage Current | IGSS | -50 |  | 50 | nA | VGS=±20V, VDS=0V | 2 |
| Zero Gate Voltage Drain Current | IDSS |  |  | 1 | µA | VDS=100V, VGS=0V | 2 |
| Zero Gate Voltage Drain Current | IDSS |  |  | 10 | nA | VDS=20V, VGS=0V | 2 |
| Drain-Source On-Resistance | RDS(on) |  |  | 6 | Ω | VGS=10V, ID=0.17A | 2 |
| Drain-Source On-Resistance | RDS(on) |  |  | 10 | Ω | VGS=4.5V, ID=0.17A | 2 |
| Diode Forward Voltage | VSD |  |  | 1.3 | V | VGS=0V, IS=0.34A | 2 |
| Forward Transconductance | gFS | 80 |  |  | mS | VDS=10V, ID=0.17A | 2 |
| Drain-Source Voltage | VDS |  |  | 100 | V |  | 1 |
| Gate-Source Voltage | VGS | -20 |  | 20 | V |  | 1 |
| Drain Current-Continuous | ID |  |  | 0.17 | A |  | 1 |
| Drain Current-Pulsed | IDM |  |  | 0.68 | A |  | 1 |
| Power Dissipation | PD |  |  | 0.35 | W |  | 1 |
| Operating Junction Temperature Range | TJ | -55 |  | 150 | °C |  | 1 |
| Storage Temperature | Tstg | -55 |  | 150 | °C |  | 1 |
| Thermal Resistance Junction to Ambient | RθJA |  | 357 |  | °C/W | Junction to Ambient | 1 |

## CAD (KiCad official)

- Symbol: `BSS123-TP`
- Footprint: `Package_TO_SOT_SMD:SOT-23`
- 3D model: SOT-23 (KiCad packages3D, STEP)
- 3D model files: `bss123-tp-etched.step` / `bss123-tp-etched.glb` carry the MPN laser-etched on the die in a toggleable `Adom.LaserEtch` group (Fusion-ready); `bss123-tp.step` / `bss123-tp.glb` are the bare package body.

## Provenance

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

- **Datasheet:** [MCC(Micro Commercial Components) datasheet](docs/bss123-tp-datasheet.pdf) (4 pp, sha256 `43aea534b413cb9f`, retrieved 2026-10-24, tier: lcsc)
- **Extractor:** parts-factory `2.0.0` / `extract_pins 0.3`, primary `claude-sonnet-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/bss123-tp-datasheet.pdf)