# JSM3400

**JSMSEMI** · MOSFETs · SOT-23

JSM3400 from JSMSEMI, 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; gate-source voltage limited to ±12 V absolute maximum, with threshold VGS(th) of 0.7 V min to 1.4 V max at ID=250µA. |
| 2 | S | passive | Source; body diode runs from source to drain, with forward drop VSD of 1 V max at IS=1A. |
| 3 | D | passive | Drain; drain-source voltage rated 30 V maximum and continuous drain current 5.8 A. |

## Key specifications

| Parameter | Value |
|---|---|
| Manufacturer | JSMSEMI |
| 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 | VDS |  |  | 30 | V |  | 1 |
| Gate-Source Voltage | VGS | -12 |  | 12 | V |  | 1 |
| Continuous Drain Current | ID |  |  | 5.8 | A |  | 1 |
| Power Dissipation | PD |  |  | 0.35 | W |  | 1 |
| Junction Temperature | Tj |  |  | 150 | ℃ |  | 1 |
| Storage Temperature | Tstg | -55 |  | 150 | ℃ |  | 1 |
| Drain-Source Breakdown Voltage | VBR(DSS) | 30 |  |  | V | VGS=OV,ID=250μA | 2 |
| Gate Threshold Voltage | VGS(th) | 0.7 |  | 1.4 | V | ID=250μA, VGS=VDS | 2 |
| Gate Leakage Current | IGSS | -100 |  | 100 | nA | VGS=±12V,VDS=0V | 2 |
| Zero Gate Voltage Drain Current | IDSS |  |  | 1 | µA | VGS=0V, VDS=24V | 2 |
| Drain-Source On-Resistance | RDS(ON) |  | 35 |  | mΩ | VGS=10V,ID=5.8A | 2 |
| Drain-Source On-Resistance | RDS(ON) |  | 40 |  | mΩ | VGS=4.5V,ID=5A | 2 |
| Drain-Source On-Resistance | RDS(ON) |  | 52 |  | mΩ | VGS=2.5V,ID=4A | 2 |
| Forward Transconductance | gfs |  | 8 |  | S | VDS=5V,ID=5A | 2 |
| Input Capacitance | Ciss |  | 1050 |  | pF | VDS=15V,VGS=0V,f=1MHz | 2 |
| Output Capacitance | Coss |  | 99 |  | pF |  | 2 |
| Reverse Transfer Capacitance | Crss |  | 77 |  | pF |  | 2 |
| Gate Resistance | Rg |  | 3.6 |  | Ω | VDS=0V,VGS=0V,f=1MHz | 2 |
| Turn-On Delay Time | td(on) |  | 5 |  | ns | VDS=15V,VGS=10V, RGEN=3Ω,RL=2.7Ω | 2 |
| Rise Time | tr |  | 7 |  | ns |  | 2 |
| Turn-Off Delay Time | td(off) |  | 40 |  | ns |  | 2 |
| Fall Time | tf |  | 6 |  | ns |  | 2 |
| Diode Forward Voltage | VSD |  | 1 |  | V | IS=1A,VGS=0V | 2 |
| Thermal Resistance Junction to Ambient | RθJA |  | 350 |  | ℃/mW |  | 1 |

## CAD (KiCad official)

- Symbol: `JSM3400`
- Footprint: `Package_TO_SOT_SMD:SOT-23`
- 3D model: SOT-23 (KiCad packages3D, STEP)
- 3D model files: `jsm3400-etched.step` / `jsm3400-etched.glb` carry the MPN laser-etched on the die in a toggleable `Adom.LaserEtch` group (Fusion-ready); `jsm3400.step` / `jsm3400.glb` are the bare package body.

## Provenance

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

- **Datasheet:** [JSMSEMI datasheet](https://jlcpcb.com/api/file/downloadByFileSystemAccessId/8588918571238109184) (4 pp, sha256 `ce545e80947a2a2c`, retrieved 2026-10-09, tier: lcsc)
- **Datasheet language:** Chinese. Pin names, descriptions, and specs on this page were extracted and translated to English by ds2sf; the linked PDF is the manufacturer original.
- **Extractor:** parts-factory `2.0.0` / `extract_pins 0.3`, primary `claude-sonnet-5-5` (text+vision), consensus `claude-opus-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/jsm3400-datasheet.pdf)