# DSS34 2.5A

**YONGYUTAI** · Schottky Diodes · SOD-123FL

DSS34 2.5A from YONGYUTAI, in a SOD-123FL. 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 of the Schottky barrier rectifier; the datasheet gives no pin-specific limit, so the device ratings apply (40 V repetitive peak reverse voltage, 3.0 A average forward rectified current). |
| 2 | Anode | passive | Anode terminal of the Schottky barrier rectifier; the datasheet gives no pin-specific limit, so the device ratings apply (40 V repetitive peak reverse voltage, 3.0 A average forward rectified current). |

## Key specifications

| Parameter | Value |
|---|---|
| Manufacturer | YONGYUTAI |
| Package | SOD-123FL |
| 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 |
|---|---|---|---|---|---|---|---|
| Maximum Repetitive Peak Reverse Voltage | VRRM |  |  | 40 | V |  | 1 |
| Maximum RMS voltage | VRMS |  |  | 28 | V |  | 1 |
| Maximum DC Blocking Voltage | VDC |  |  | 40 | V |  | 1 |
| Maximum Average Forward Rectified Current | IF(AV) |  |  | 3 | A |  | 1 |
| Peak Forward Surge Current | IFSM |  |  | 80 | A | 8.3ms Single Half Sine-wave Superimposed on Rated Load (JEDEC method) | 1 |
| Max Instantaneous Forward Voltage | VF |  |  | 0.55 | V | at 3 A | 1 |
| Maximum DC Reverse Current | IR |  |  | 0.5 | mA | Ta = 25°C at Rated DC Reverse Voltage | 1 |
| Maximum DC Reverse Current | IR |  |  | 10 | mA | Ta = 100°C at Rated DC Reverse Voltage | 1 |
| Operating Junction Temperature Range | Tj | -55 |  | 125 | °C |  | 1 |
| Storage Temperature Range | Tstg | -55 |  | 150 | °C |  | 1 |
| Typical Thermal Resistance | RθJA |  | 80 |  | °C/W | P.C.B. mounted with 2.0" X 2.0" (5 X 5 cm) copper pad areas | 1 |

## CAD (KiCad official)

- Symbol: `DSS34 2.5A`
- Footprint: `Diode_SMD:D_SOD-123F`
- 3D model: SOD-123FL (KiCad packages3D, STEP)
- 3D model files: `dss34-2-5a-etched.step` / `dss34-2-5a-etched.glb` carry the MPN laser-etched on the die in a toggleable `Adom.LaserEtch` group (Fusion-ready); `dss34-2-5a.step` / `dss34-2-5a.glb` are the bare package body.

## Provenance

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

- **Datasheet:** [YONGYUTAI datasheet](https://jlcpcb.com/api/file/downloadByFileSystemAccessId/8757120068989788160) (3 pp, sha256 `0cbd7d2fb891bf06`, retrieved 2026-10-17, 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/dss34-2-5a-datasheet.pdf)