# RB551VM-40FHTE-17

**ROHM Semicon** · Schottky Diodes · SOD-323

RB551VM-40FHTE-17 from ROHM Semicon, in a SOD-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 | Cathode | passive | Cathode terminal (1) of the Schottky barrier diode; reverse voltage VR up to 40 V and repetitive peak reverse voltage VRM 40 V. |
| 2 | Anode | passive | Anode terminal (2) of the Schottky barrier diode; forward voltage VF max 0.43 V at IF=200 mA. |

## Key specifications

| Parameter | Value |
|---|---|
| Manufacturer | ROHM Semicon |
| Package | SOD-323 |
| Category | Diodes |
| Pins | 2 |

## 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 |  |  | 0.43 | V | IF=200mA | 1 |
| Reverse current 1 | IR1 |  |  | 80 | mA | VR=10V | 1 |
| Reverse current 2 | IR2 |  |  | 300 | mA | VR=40V | 1 |
| Repetitive peak reverse voltage | VRM |  |  | 40 | V | Duty≦0.5 | 1 |
| Reverse voltage (DC) | VR |  |  | 40 | V | Direct reverse voltage | 1 |
| Average forward rectified current | Io |  |  | 200 | mA | Glass epoxy board mounted, 60Hz half sin wave, resistive load | 1 |
| Non-repetitive forward current surge peak | IFSM |  |  | 1 | A | 60Hz half sin wave, Non-repetitive, Ta=25ºC, 1cycle | 1 |
| Operating junction temperature | Tj |  |  | 125 | °C |  | 1 |
| Storage temperature | Tstg | -55 |  | 125 | °C |  | 1 |

## CAD (KiCad official)

- Symbol: `RB551VM-40FHTE-17`
- Footprint: `Diode_SMD:D_SOD-323`
- 3D model: SOD-323 (KiCad packages3D, STEP)
- 3D model files: `rb551vm-40fhte-17-etched.step` / `rb551vm-40fhte-17-etched.glb` carry the MPN laser-etched on the die in a toggleable `Adom.LaserEtch` group (Fusion-ready); `rb551vm-40fhte-17.step` / `rb551vm-40fhte-17.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/8590206537000902656) (7 pp, sha256 `521f41c06097ae2b`, retrieved 2026-10-22, tier: lcsc)
- **Extractor:** parts-factory `2.0.0` / `extract_pins 0.3`, primary `claude-sonnet-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/rb551vm-40fhte-17-datasheet.pdf)