# SS120U

**DIYI Elec Tech** · Schottky Barrier Diodes (SBD) · SMA

SS120U from DIYI Elec Tech, in a SMA. 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: the banded/marked end per the datasheet; pad 1 of the KiCad diode footprint. |
| 2 | A | passive | Anode. |

## Key specifications

| Parameter | Value |
|---|---|
| Manufacturer | DIYI Elec Tech |
| Package | SMA |
| 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 Recurrent Peak Reverse Voltage (SS120U column) | VRRM |  |  | 200 | V |  | 1 |
| Maximum DC Blocking Voltage (SS120U column) | VDC |  |  | 200 | V |  | 1 |
| Maximum RMS Voltage (SS120U column) | VRMS |  |  | 140 | V |  | 1 |
| Average Rectified Output Current | IF(AV) |  |  | 1 | A |  | 1 |
| Rating for fusing | I2t |  |  | 5.08 | A²s | t<8.3ms | 1 |
| Typical Thermal Resistance per leg | Rθ |  | 75 |  | ℃/W | Note 2 (device mounted on FR-4, 1"*1" pad, 0.1"*0.15" copper pad) | 1 |
| Operating Temperature Range | TJ | -55 |  | 150 | ℃ |  | 1 |
| Storage Temperature Range | TSTG | -55 |  | 150 | ℃ |  | 1 |

## CAD (KiCad official)

- Symbol: `SS120U`
- Footprint: `Diode_SMD:D_SMA`
- 3D model: SMA (KiCad packages3D, STEP)
- 3D model files: `ss120u-etched.step` / `ss120u-etched.glb` carry the MPN laser-etched on the die in a toggleable `Adom.LaserEtch` group (Fusion-ready); `ss120u.step` / `ss120u.glb` are the bare package body.

## Provenance

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

- **Datasheet:** [DIYI Elec Tech datasheet](docs/ss120u-datasheet.pdf) (3 pp, sha256 `acd135ceb2ef1154`, retrieved 2026-10-21, tier: lcsc)
- **Extractor:** parts-factory `2.0.0` / `extract_pins`, primary `cathode-band convention` (convention), consensus `off` (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/ss120u-datasheet.pdf)