# BSS126H6327

**Infineon Technologies** · MOSFETs · SOT-23-3

BSS126H6327 from Infineon Technologies, in a SOT-23-3. 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 of the N-channel depletion-mode MOSFET; VGS max is ±20 V and VGS(th) is -2.7 V to -1.6 V at VDS=3 V, ID=8 µA. |
| 2 | S | passive | Source terminal of the MOSFET; continuous drain current is 0.021 A at TA=25 °C. |
| 3 | D | passive | Drain of the MOSFET with VDS rating of 600 V and RDS(on) max 700 Ω; pulsed drain current is 0.085 A at TA=25 °C. |

## Key specifications

| Parameter | Value |
|---|---|
| Manufacturer | Infineon Technologies |
| Package | SOT-23-3 |
| 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 |
|---|---|---|---|---|---|---|---|
| Continuous drain current | ID |  |  | 0.021 | A | TA=25 °C | 1 |
| Continuous drain current | ID |  |  | 0.017 | A | TA=70 °C | 1 |
| Pulsed drain current | ID,pulse |  |  | 0.085 | A | TA=25 °C | 1 |
| Reverse diode dv/dt | dv/dt |  |  | 6 | kV/µs | ID=0.016 A, VDS=20 V, di/dt=200 A/µs, Tj,max=150 °C | 1 |
| Gate source voltage | VGS | -20 |  | 20 | V |  | 1 |
| Power dissipation | Ptot |  |  | 0.5 | W | TA=25 °C | 1 |
| Operating and storage temperature | Tj, Tstg | -55 |  | 150 | °C |  | 1 |
| Thermal resistance, junction - ambient | RthJA |  |  | 250 | K/W | minimal footprint | 2 |
| Drain-source breakdown voltage | V(BR)DSS | 600 |  |  | V | VGS=-5 V, ID=250 µA | 2 |
| Gate threshold voltage | VGS(th) | -2.7 | -2 | -1.6 | V | VDS=3 V, ID=8 µA | 2 |
| Drain-source cutoff current | ID(off) |  |  | 0.1 | µA | VDS=600 V, VGS=-5 V, Tj=25 °C | 2 |
| Drain-source cutoff current | ID(off) |  |  | 10 | µA | VDS=600 V, VGS=-5 V, Tj=125 °C | 2 |
| Gate-source leakage current | IGSS |  |  | 100 | nA | VGS=20 V, VDS=0 V | 2 |
| On-state drain current | IDSS | 7 |  |  | mA | VGS=0 V, VDS=25 V | 2 |
| Drain-source on-state resistance | RDS(on) |  | 320 | 700 | Ω | VGS=0 V, ID=3 mA | 2 |
| Drain-source on-state resistance | RDS(on) |  | 280 | 500 | Ω | VGS=10 V, ID=16 mA | 2 |
| Transconductance | gfs | 0.008 | 0.017 |  | S | /VDS/>2/ID/RDS(on)max, ID=0.01 A | 2 |
| Input capacitance | Ciss |  | 21 | 28 | pF | VGS=-5 V, VDS=25 V, f=1 MHz | 3 |
| Output capacitance | Coss |  | 2.4 | 3.2 | pF | VGS=-5 V, VDS=25 V, f=1 MHz | 3 |
| Reverse transfer capacitance | Crss |  | 1 | 1.5 | pF | VGS=-5 V, VDS=25 V, f=1 MHz | 3 |
| Turn-on delay time | td(on) |  | 6.1 | 9.2 | ns | VDD=300 V, VGS=-3…7 V, ID=0.01 A, RG=6 Ω | 3 |
| Rise time | tr |  | 9.7 | 14.5 | ns | VDD=300 V, VGS=-3…7 V, ID=0.01 A, RG=6 Ω | 3 |
| Turn-off delay time | td(off) |  | 14 | 21 | ns | VDD=300 V, VGS=-3…7 V, ID=0.01 A, RG=6 Ω | 3 |
| Fall time | tf |  | 115 | 170 | ns | VDD=300 V, VGS=-3…7 V, ID=0.01 A, RG=6 Ω | 3 |
| Gate to source charge | Qgs |  | 0.05 | 0.08 | nC | VDD=400 V, ID=10 mA, VGS=-3 to 5 V | 3 |
| Gate to drain charge | Qgd |  | 1.2 | 1.8 | nC | VDD=400 V, ID=10 mA, VGS=-3 to 5 V | 3 |
| Gate charge total | Qg |  | 1.4 | 2.1 | nC | VDD=400 V, ID=10 mA, VGS=-3 to 5 V | 3 |
| Diode continuous forward current | IS |  |  | 0.016 | A |  | 3 |
| Diode pulse current | IS,pulse |  |  | 0.064 | A |  | 3 |
| Diode forward voltage | VSD |  | 0.81 | 1.2 | V | VGS=-5 V, IF=16 mA, Tj=25 °C | 3 |
| Reverse recovery time | trr |  | 160 | 240 | ns | VR=300 V, IF=0.01 A, diF/dt=100 A/µs, TA=25 °C | 3 |
| Reverse recovery charge | Qrr |  | 13.2 | 19.8 | nC | VR=300 V, IF=0.01 A, diF/dt=100 A/µs, TA=25 °C | 3 |

## CAD (KiCad official)

- Symbol: `BSS126H6327`
- Footprint: `Package_TO_SOT_SMD:SOT-23-3`
- 3D model: SOT-23-3 (KiCad packages3D, STEP)
- 3D model files: `bss126h6327-etched.step` / `bss126h6327-etched.glb` carry the MPN laser-etched on the die in a toggleable `Adom.LaserEtch` group (Fusion-ready); `bss126h6327.step` / `bss126h6327.glb` are the bare package body.

## Provenance

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

- **Datasheet:** [Infineon Technologies datasheet](https://jlcpcb.com/api/file/downloadByFileSystemAccessId/8588885328732438528) (9 pp, sha256 `38b355b3fac980a8`, retrieved 2026-10-09, tier: lcsc)
- **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/bss126h6327-datasheet.pdf)