# RN4907

**TOSHIBA** · Digital Transistors · SOT-363

RN4907 from TOSHIBA, in a SOT-363. 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 | Emitter1 | passive | Emitter of Q1, the PNP bias-resistor transistor; Q1 absolute maximum ratings are VCBO -50 V, VCEO -50 V, VEBO -6 V and IC -100 mA. |
| 2 | Base1 | input | Base of Q1 with built-in input resistor R1 (typ. 10 kΩ, range 7 to 13 kΩ), so no external base resistor is needed. |
| 3 | Collector2 | passive | Collector of Q2, the NPN bias-resistor transistor; Q2 absolute maximum ratings are VCBO 50 V, VCEO 50 V, VEBO 6 V and IC 100 mA. |
| 4 | Emitter2 | passive | Emitter of Q2, the NPN bias-resistor transistor. |
| 5 | Base2 | input | Base of Q2 with built-in input resistor R1 (typ. 10 kΩ, range 7 to 13 kΩ), so no external base resistor is needed. |
| 6 | Collector1 | passive | Collector of Q1, the PNP bias-resistor transistor. |

## Key specifications

| Parameter | Value |
|---|---|
| Manufacturer | TOSHIBA |
| Package | SOT-363 |
| Category | Transistors/Thyristors |
| Pins | 6 |

## Electrical characteristics

Limits as printed in the datasheet (page.json `metadata.characteristics` carries them as data).

| Parameter | Symbol | Min | Typ | Max | Unit | Conditions | Page |
|---|---|---|---|---|---|---|---|
| Collector cut-off current (Q1, PNP) | ICBO |  |  | -100 | nA | VCB = -50 V, IE = 0 mA | 2 |
| Collector cut-off current (Q1, PNP) | ICEO |  |  | -500 | nA | VCE = -50 V, IB = 0 mA | 2 |
| Collector cut-off current (Q2, NPN) | ICBO |  |  | 100 | nA | VCB = 50 V, IE = 0 mA | 3 |
| Collector cut-off current (Q2, NPN) | ICEO |  |  | 500 | nA | VCE = 50 V, IB = 0 mA | 3 |
| Input resistance (R1, both transistors) | R1 | 7 | 10 | 13 | kΩ |  | 3 |
| Resistor ratio (R1/R2, both transistors) | R1/R2 | 0.191 | 0.213 | 0.232 |  |  | 3 |
| Collector-base voltage (Q1, PNP) | VCBO |  |  | -50 | V | Ta = 25 °C | 2 |
| Collector-emitter voltage (Q1, PNP) | VCEO |  |  | -50 | V | Ta = 25 °C | 2 |
| Emitter-base voltage (Q1, PNP) | VEBO |  |  | -6 | V | Ta = 25 °C | 2 |
| Collector current (Q1, PNP) | IC |  |  | -100 | mA | Ta = 25 °C | 2 |
| Collector-base voltage (Q2, NPN) | VCBO |  |  | 50 | V | Ta = 25 °C | 2 |
| Collector current (Q2, NPN) | IC |  |  | 100 | mA | Ta = 25 °C | 2 |
| Collector power dissipation (total) |  |  |  | 200 | mW | Ta = 25 °C, total rating (Q1 and Q2) | 2 |
| Junction temperature |  |  |  | 150 | °C |  | 2 |
| Storage temperature | Tstg | -55 |  | 150 | °C |  | 2 |

## CAD (KiCad official)

- Symbol: `RN4907`
- Footprint: `Package_TO_SOT_SMD:SOT-363_SC-70-6`
- 3D model: SOT-363 (KiCad packages3D, STEP)
- 3D model files: `rn4907-etched.step` / `rn4907-etched.glb` carry the MPN laser-etched on the die in a toggleable `Adom.LaserEtch` group (Fusion-ready); `rn4907.step` / `rn4907.glb` are the bare package body.

## Provenance

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

- **Datasheet:** [TOSHIBA datasheet](https://jlcpcb.com/api/file/downloadByFileSystemAccessId/8603133346327244800) (6 pp, sha256 `29ec8904fa993c3c`, 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/rn4907-datasheet.pdf)