# SI2306

**Guangdong Hottech** · MOSFETs · SOT-23

SI2306 from Guangdong Hottech, 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 | Gate | input | Gate terminal of the N-channel MOSFET, with gate-source voltage rated at 20 V (VGS ±20 V) per the absolute maximum ratings. |
| 2 | Source | passive | Source terminal of the N-channel MOSFET; the source-drain diode forward voltage is 0.8 V typical and 1.2 V maximum at IS = 1.25 A, VGS = 0 V. |
| 3 | Drain | passive | Drain terminal of the N-channel MOSFET, rated for 30 V drain-source voltage and 3.16 A continuous drain current (10 A pulsed). |

## Key specifications

| Parameter | Value |
|---|---|
| Manufacturer | Guangdong Hottech |
| 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 |  |  | 20 | V |  | 1 |
| Drain Current (Continuous) | ID |  |  | 3.16 | A |  | 1 |
| Drain Current (Pulsed) | IDM |  |  | 10 | A |  | 1 |
| Total Power Dissipation | PD |  |  | 0.75 | W | @TA=25 C | 1 |
| Operating Junction and Storage Temperature Range | Tj, Tstg | -55 |  | 150 | °C |  | 1 |
| Thermal Resistance Junction to Ambient | RθJA |  |  | 100 | °C/W | PCB mounted | 1 |
| Drain-Source Breakdown Voltage | V(BR)DS | 30 |  |  | V | VGS = 0V, ID =250µA | 1 |
| Gate-Threshold Voltage | VGS(th) | 1 |  | 3 | V | VDS =VGS, ID =250µA | 1 |
| Gate-Body Leakage | IGSS | -100 |  | 100 | nA | VDS =0V, VGS =±20V | 1 |
| Zero Gate Voltage Drain Current | IDSS |  |  | 0.5 | µA | VDS =30V, VGS =0V | 1 |
| Drain-Source On-Resistance | RDS(on) |  | 0.038 | 0.047 | Ω | VGS =10V, ID =3.5A | 1 |
| Drain-Source On-Resistance | RDS(on) |  | 0.052 | 0.065 | Ω | VGS =4.5V, ID =2.8A | 1 |
| Diode Forward Voltage | VSD |  | 0.8 | 1.2 | V | IS=1.25A,VGS=0V | 1 |
| Gate Charge | Qg |  | 3 | 4.5 | nC | VDS =15V,VGS =5V,ID =2.5A | 1 |
| Total Gate Charge | Qgt |  | 6 | 9 | nC |  | 1 |
| Gate Resistance | Rg | 2.5 | 5 | 7.5 | Ω | f =1.0MHz | 1 |
| Turn-On Delay Time | td(on) |  | 7 | 11 | ns | VDD=15V, RL=15Ω, ID ≈1A, VGEN=10V,Rg=6Ω | 1 |
| Rise Time | tr |  | 12 | 18 | ns | VDD=15V, RL=15Ω, ID ≈1A, VGEN=10V,Rg=6Ω | 1 |
| Turn-Off Delay Time | td(off) |  | 14 | 25 | ns | VDD=15V, RL=15Ω, ID ≈1A, VGEN=10V,Rg=6Ω | 1 |
| Fall Time | tf |  | 6 | 10 | ns | VDD=15V, RL=15Ω, ID ≈1A, VGEN=10V,Rg=6Ω | 1 |
| Gate-Source Charge | Qgs |  | 1.6 |  | nC | VDS =15V,VGS =10V,ID =2.5A | 1 |
| Gate-Drain Charge | Qgd |  | 0.6 |  | nC | VDS =15V,VGS =10V,ID =2.5A | 1 |
| Input Capacitance | Ciss |  | 305 |  | pF | VDS =15V,VGS =0V,f =1MHz | 1 |
| Output Capacitance | Coss |  | 65 |  | pF | VDS =15V,VGS =0V,f =1MHz | 1 |
| Reverse Transfer Capacitance | Crss |  | 29 |  | pF | VDS =15V,VGS =0V,f =1MHz | 1 |
| Forward Transconductance | gfs |  | 7 |  | S | VDS =4.5V, ID =2.5A | 1 |

## CAD (KiCad official)

- Symbol: `SI2306`
- Footprint: `Package_TO_SOT_SMD:SOT-23`
- 3D model: SOT-23 (KiCad packages3D, STEP)
- 3D model files: `si2306-etched.step` / `si2306-etched.glb` carry the MPN laser-etched on the die in a toggleable `Adom.LaserEtch` group (Fusion-ready); `si2306.step` / `si2306.glb` are the bare package body.

## Provenance

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

- **Datasheet:** [Guangdong Hottech datasheet](https://jlcpcb.com/api/file/downloadByFileSystemAccessId/8586189684456501248) (2 pp, sha256 `6ea241e6962a95a4`, 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/si2306-datasheet.pdf)