# BSS138PS

**ElecSuper** · MOSFETs · SOT-363

BSS138PS from ElecSuper, 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 | Source1 | passive | Source terminal of MOSFET 1; the datasheet gives the device ratings as VDS 60 V (BVDSS) and continuous drain current 0.41 A. |
| 2 | Gate1 | input | Gate of MOSFET 1; gate-source voltage is rated at ±20 V (VGS). |
| 3 | Drain2 | passive | Drain terminal of MOSFET 2; drain-source voltage is rated 60 V (BVDSS) with 0.41 A continuous drain current. |
| 4 | Source2 | passive | Source terminal of MOSFET 2; the datasheet gives the device ratings as VDS 60 V (BVDSS) and continuous drain current 0.41 A. |
| 5 | Gate2 | input | Gate of MOSFET 2; gate-source voltage is rated at ±20 V (VGS). |
| 6 | Drain1 | passive | Drain terminal of MOSFET 1; drain-source voltage is rated 60 V (BVDSS) with 0.41 A continuous drain current. |

## Key specifications

| Parameter | Value |
|---|---|
| Manufacturer | ElecSuper |
| Package | SOT-363 |
| Category | Transistors/Thyristors |
| 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 Voltage | BVDSS |  |  | 60 | V |  | 2 |
| Gate-Source Voltage | VGS | -20 |  | 20 | V |  | 2 |
| Continuous Drain Current | ID |  |  | 0.41 | A |  | 2 |
| Maximum Power Dissipation | PD |  |  | 417 | mW |  | 2 |
| Pulsed Drain Current | IDM |  |  | 1.64 | A | Repetitive rating, tp=10μs, Duty Cycle=1% | 2 |
| Operating Junction Temperature | TJ |  |  | 150 | °C |  | 2 |
| Lead Temperature | TL |  |  | 260 | °C |  | 2 |
| Storage Temperature Range | Tstg | -55 |  | 150 | °C |  | 2 |
| Junction-to-Ambient Thermal Resistance | RθJA |  | 300 |  | °C/W | Single Operation | 2 |
| Drain-to-Source Breakdown Voltage | BVDSS | 60 |  |  | V | VGS=0V, ID=10mA | 3 |
| Zero Gate Voltage Drain Current | IDSS |  |  | 1 | uA | VDS=60V, VGS=0V,TJ=25℃ | 3 |
| Zero Gate Voltage Drain Current | IDSS |  |  | 100 | uA | VDS=40V, VGS=0V, TJ=125℃ | 3 |
| Gate-to-source Leakage Current | IGSS | -10 |  | 10 | uA | VDS=0V, VGS=±20V | 3 |
| Gate Threshold Voltage | VGS(TH) | 0.8 | 1 | 1.5 | V | VGS=VDS, ID=250uA | 3 |
| Drain-to-source On-resistance | RDS(on) |  | 1.5 | 2 | Ω | VGS=10V, ID=0.5A | 3 |
| Drain-to-source On-resistance | RDS(on) |  | 1.6 | 2.5 | Ω | VGS=4.5V, ID=0.2A | 3 |
| Input Capacitance | CISS |  | 25 | 50 | pF | VGS=0V, f=1MHz, VDS =25V | 3 |
| Output Capacitance | COSS |  | 9.7 | 22 | pF |  | 3 |
| Reverse Transfer Capacitance | CRSS |  | 2.2 | 5 | pF |  | 3 |
| Total Gate Charge | QG(TOT) |  | 0.65 | 1 | nC | VGS=4.5V, VDS=25V, ID=0.25A | 3 |
| Gate-to-Source Charge | QGS |  | 0.2 |  | nC |  | 3 |
| Gate-to-Drain Charge | QGD |  | 0.23 |  | nC |  | 3 |
| Turn-On Delay Time | td(ON) |  | 2.3 | 5 | ns | VGS=10V, VDS=25V, ID=0.5A, RG=6Ω | 3 |
| Rise Time | tr |  | 19.2 | 40 | ns |  | 3 |
| Turn-Off Delay Time | td(OFF) |  | 6.3 | 12 | ns |  | 3 |
| Fall Time | tf |  | 23 | 50 | ns |  | 3 |
| Forward Voltage | VSD |  | 0.86 | 1.5 | V | VGS=0V, IS=0.5A | 3 |

## CAD (KiCad official)

- Symbol: `BSS138PS`
- Footprint: `Package_TO_SOT_SMD:SOT-363_SC-70-6`
- 3D model: SOT-363 (KiCad packages3D, STEP)
- 3D model files: `bss138ps-etched.step` / `bss138ps-etched.glb` carry the MPN laser-etched on the die in a toggleable `Adom.LaserEtch` group (Fusion-ready); `bss138ps.step` / `bss138ps.glb` are the bare package body.

## Provenance

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

- **Datasheet:** [ElecSuper datasheet](https://jlcpcb.com/api/file/downloadByFileSystemAccessId/8608744854285938688) (7 pp, sha256 `2868da593a4eb7fc`, 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/bss138ps-datasheet.pdf)