# SS34AQ

**Yangzhou Yangjie Elec Tech** · Schottky Barrier Diodes (SBD) · SMA(DO-214AC)

SS34AQ from Yangzhou Yangjie Elec Tech, in a SMA(DO-214AC). 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 terminal, marked by the cathode line on the package body; the SS34AQ blocks up to 40 V DC (VRRM 40 V) and passes 3.0 A average forward current. |
| 2 | A | passive | Anode terminal, the end opposite the cathode line; forward voltage is 0.5 V max at IF=3 A, TJ=25℃. |

## Key specifications

| Parameter | Value |
|---|---|
| Manufacturer | Yangzhou Yangjie Elec Tech |
| Package | SMA(DO-214AC) |
| 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 |
|---|---|---|---|---|---|---|---|
| Instantaneous forward voltage | VF |  | 0.48 | 0.5 | V | IF=3A, TJ=25℃ | 1 |
| Instantaneous forward voltage | VF |  | 0.41 | 0.45 | V | IF=3A, TJ=125℃ | 1 |
| Reverse current | IR |  | 15 | 100 | μA | Rated VR, TJ=25℃ | 1 |
| Reverse current | IR |  |  | 30 | mA | Rated VR, TJ=125℃ | 1 |
| Repetitive peak reverse voltage | VRRM |  |  | 40 | V | Ta=25℃ | 1 |
| Maximum RMS voltage | VRMS |  |  | 28 | V | Ta=25℃ | 1 |
| Maximum DC blocking voltage | VDC |  |  | 40 | V | Ta=25℃ | 1 |
| Maximum average forward rectified current | IO |  |  | 3 | A | at TL (Fig.1) | 1 |
| Surge (non-repetitive) forward current | IFSM |  |  | 80 | A | @60Hz half-sine wave, 1 cycle, TJ=25℃ | 1 |
| Voltage rate of change | dV/dt |  |  | 10000 | V/μs | rated VR | 1 |
| Storage temperature | Tstg | -55 |  | 150 | ℃ |  | 1 |
| Junction temperature | TJ | -55 |  | 150 | ℃ |  | 1 |
| Typical junction capacitance | CJ |  | 150 |  | pF | VR=4V, f=1MHz | 1 |

## Materials and finish

As the datasheet states them (page.json `metadata.appearance`; the 3D model's colours follow it).

| Part | Material | Colour / plating | Datasheet says | Page |
|---|---|---|---|---|
| contacts |  | tin | ● Terminals: Tin plated leads, solderable per J-STD-002 and JESD22-B102 | 1 |

## CAD (KiCad official)

- Symbol: `SS34AQ`
- Footprint: `Diode_SMD:D_SMA`
- 3D model: SMA(DO-214AC) (KiCad packages3D, STEP)
- 3D model files: `ss34aq-etched.step` / `ss34aq-etched.glb` carry the MPN laser-etched on the die in a toggleable `Adom.LaserEtch` group (Fusion-ready); `ss34aq.step` / `ss34aq.glb` are the bare package body.

## Provenance

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

- **Datasheet:** [Yangzhou Yangjie Elec Tech datasheet](docs/ss34aq-datasheet.pdf) (4 pp, sha256 `011ccc917bb0e165`, 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/ss34aq-datasheet.pdf)