# BSS138AKDW-TP

**MCC(Micro Commercial Components)** · MOSFETs · SOT-363

BSS138AKDW-TP from MCC(Micro Commercial Components), in a SOT-363. 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 | S2 | passive | Source of MOSFET 2 (N-channel, VDS max 50V, ID 0.22A continuous per the Maximum Ratings). |
| 2 | G2 | input | Gate of MOSFET 2, ESD protected to 1500V with VGS rated ±20V and a gate threshold of 0.8V min to 1.45V typ at ID=250µA. |
| 3 | D1 | passive | Drain of MOSFET 1, rated 50V drain-source with 0.22A continuous drain current. |
| 4 | S1 | passive | Source of MOSFET 1 (N-channel, VDS max 50V, ID 0.22A continuous per the Maximum Ratings). |
| 5 | G1 | input | Gate of MOSFET 1, ESD protected to 1500V with VGS rated ±20V and a gate threshold of 0.8V min to 1.45V typ at ID=250µA. |
| 6 | D2 | passive | Drain of MOSFET 2, rated 50V drain-source with 0.22A continuous drain current. |

## Key specifications

| Parameter | Value |
|---|---|
| Manufacturer | MCC(Micro Commercial Components) |
| Package | SOT-363 |
| Category | Transistors |
| Pins | 6 |

## 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 | 50 |  |  | V | VGS=0V, ID=250µA | 2 |
| Gate-Threshold Voltage | VGS(th) | 0.8 |  |  | V | VDS=VGS, ID=250µA | 2 |
| Zero Gate Voltage Drain Current | IDSS |  |  | 1 | µA | VDS=48V, VGS=0V | 2 |
| Drain-Source On-Resistance | RDS(on) |  |  | 3 | Ω | VGS=10V, ID=0.5A | 2 |
| Drain-Source On-Resistance | RDS(on) |  |  | 4 | Ω | VGS=4.5V, ID=0.2A | 2 |
| Diode Forward Voltage | VSD |  |  | 1.3 | V | VGS=0V, IS=0.5A | 2 |
| Forward Transconductance | gFS | 100 |  |  | mS | VDS=10V, ID=0.2A | 2 |
| Drain-Source Voltage | VDS |  |  | 50 | V |  | 1 |
| Gate-Source Voltage | VGS | -20 |  | 20 | V |  | 1 |
| Drain Current-Continuous | ID |  |  | 0.22 | A |  | 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: `BSS138AKDW-TP`
- Footprint: `Package_TO_SOT_SMD:SOT-363_SC-70-6`
- 3D model: SOT-363 (KiCad packages3D, STEP)
- 3D model files: `bss138akdw-tp-etched.step` / `bss138akdw-tp-etched.glb` carry the MPN laser-etched on the die in a toggleable `Adom.LaserEtch` group (Fusion-ready); `bss138akdw-tp.step` / `bss138akdw-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/bss138akdw-tp-datasheet.pdf) (4 pp, sha256 `2a599c8c10f5f7f1`, retrieved 2026-10-23, 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/bss138akdw-tp-datasheet.pdf)