# RN779FT106

**ROHM Semicon** · Diodes - General Purpose · SOT-323

RN779FT106 from ROHM Semicon, in a SOT-323. 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 | K | passive | Cathode of the second diode of the dual PIN diode pair; the datasheet rates each element at VR 50 V and IF 50 mA. |
| 2 | A | passive | Anode of the first diode of the dual PIN diode pair; the datasheet rates each element at VR 50 V and IF 50 mA. |
| 3 | A/K | passive | Common anode/cathode node joining the two diodes; the datasheet rates each element at VR 50 V and IF 50 mA. |

## Key specifications

| Parameter | Value |
|---|---|
| Manufacturer | ROHM Semicon |
| Package | SOT-323 |
| Category | Diodes |
| 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 |
|---|---|---|---|---|---|---|---|
| Forward voltage | VF |  |  | 1 | V | IF=10mA | 1 |
| Reverse current | IR |  |  | 100 | nA | VR=50V | 1 |
| Capacitance between terminals | Ct |  |  | 0.9 | pF | VR=35V f=1.0MHz | 1 |
| High frequency forward resistance | rF |  |  | 7 | Ω | IF=10mA f=100MHz | 1 |
| Reverse voltage | VR |  |  | 50 | V |  | 1 |
| Forward current | IF |  |  | 50 | mA |  | 1 |
| Junction temperature | Tj |  |  | 150 | ℃ |  | 1 |
| Storage temperature | Tstg | -55 |  | 150 | ℃ |  | 1 |

## CAD (KiCad official)

- Symbol: `RN779FT106`
- Footprint: `Package_TO_SOT_SMD:SOT-323_SC-70`
- 3D model: SOT-323 (KiCad packages3D, STEP)
- 3D model files: `rn779ft106-etched.step` / `rn779ft106-etched.glb` carry the MPN laser-etched on the die in a toggleable `Adom.LaserEtch` group (Fusion-ready); `rn779ft106.step` / `rn779ft106.glb` are the bare package body.

## Provenance

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

- **Datasheet:** [ROHM Semicon datasheet](https://jlcpcb.com/api/file/downloadByFileSystemAccessId/8588913130247737344) (7 pp, sha256 `130e33b49b3266ed`, retrieved 2026-10-19, 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/rn779ft106-datasheet.pdf)