# RC3420

**RealChip** · MOSFETs · SOT-23-3

RC3420 from RealChip, 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 | Gate | input | Gate terminal of the N-channel MOSFET, rated for a gate-source voltage VGS of ±12 V (absolute maximum). |
| 2 | Source | passive | Source terminal of the N-channel MOSFET; the body-diode maximum continuous current IS is 2 A. |
| 3 | Drain | passive | Drain terminal of the N-channel MOSFET, rated for a drain-source voltage VDS of 20 V and a continuous drain current ID of 6 A at VGS = 10 V (TA = 25℃). |

## Key specifications

| Parameter | Value |
|---|---|
| Manufacturer | RealChip |
| Package | SOT-23-3 |
| Category | Triode/MOS Tube/Transistor |
| 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 |
|---|---|---|---|---|---|---|---|
| Gate-Source Voltage | VGS | -12 |  | 12 | V |  | 1 |
| Drain-Source Voltage | VDS |  |  | 20 | V |  | 1 |
| Continuous Drain Current | ID |  |  | 6 | A | TA=25℃ | 1 |
| Continuous Drain Current | ID |  |  | 5 | A | TA=70℃ | 1 |
| Pulsed Drain Current | IDM |  |  | 30 | A |  | 1 |
| Power Dissipation | PD |  |  | 1.4 | W | TA=25℃ | 1 |
| Power Dissipation | PD |  |  | 0.9 | W | TA=70℃ | 1 |
| Junction Temperature | TJ |  |  | 150 | ℃ |  | 1 |
| Storage Temperature Range | Tstg | -55 |  | 150 | ℃ |  | 1 |
| Thermal Resistance Junction-to-Ambient | RthJA |  |  | 90 | ℃/W | t ≤ 10s | 1 |
| Thermal Resistance Junction-to-Ambient | RthJA |  |  | 125 | ℃/W | Steady-State | 1 |
| Thermal Resistance Junction-to-Lead | RthJL |  |  | 80 | ℃/W |  | 1 |
| Gate-Body Leakage Current | IGSS | -100 |  | 100 | nA | VDS=0V, VGS=±12V | 2 |
| Static Drain-Source On-Resistance | RDS(On) |  |  | 24 | mΩ | VGS=10V, ID=6A | 2 |
| Static Drain-Source On-Resistance | RDS(On) |  |  | 27 | mΩ | VGS=4.5V, ID=5A | 2 |
| Static Drain-Source On-Resistance | RDS(On) |  |  | 42 | mΩ | VGS=2.5V, ID=4A | 2 |
| Static Drain-Source On-Resistance | RDS(On) |  |  | 55 | mΩ | VGS=1.8V, ID=2A | 2 |

## CAD (KiCad official)

- Symbol: `RC3420`
- Footprint: `Package_TO_SOT_SMD:SOT-23-3`
- 3D model: SOT-23-3 (KiCad packages3D, STEP)
- 3D model files: `rc3420-etched.step` / `rc3420-etched.glb` carry the MPN laser-etched on the die in a toggleable `Adom.LaserEtch` group (Fusion-ready); `rc3420.step` / `rc3420.glb` are the bare package body.

## Provenance

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

- **Datasheet:** [RealChip datasheet](https://jlcpcb.com/api/file/downloadByFileSystemAccessId/8590269424826814464) (4 pp, sha256 `31cc8863223a4cc7`, retrieved 2026-10-18, 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/rc3420-datasheet.pdf)