# SK315U

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

SK315U from DIYI Elec Tech, in a SMB. 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, marked by the color band on the package; the datasheet states 'Polarity: Color band denotes cathode end', with 20-150 V... see review note for rating by type. |
| 2 | A | passive | Anode terminal of the Schottky barrier rectifier (3.0 A average rectified output current, VFM 0.5-0.92 V at IF=3.0 A depending on type). |

## Key specifications

| Parameter | Value |
|---|---|
| Manufacturer | DIYI Elec Tech |
| Package | SMB |
| 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 | VRRM |  |  | 150 | V |  | 1 |
| Maximum RMS Voltage | VRMS |  |  | 105 | V |  | 1 |
| Maximum DC Blocking Voltage | VDC |  |  | 150 | V |  | 1 |
| Average Rectified Output Current | IF(AV) |  |  | 3 | A |  | 1 |
| Peak Forward Surge Current | IFSM |  |  | 90 | A | 8.3ms single half sine-wave superimposed on rated load (JEDEC Method) | 1 |
| Rating for fusing | I2t |  |  | 33.61 | A2s | t<8.3ms | 1 |
| Operating Temperature Range | TJ | -55 |  | 150 | °C |  | 1 |
| Storage Temperature Range | TSTG | -55 |  | 150 | °C |  | 1 |
| Typical Thermal Resistance | RθJA |  | 70 |  | °C/W | Note 2 | 1 |

## CAD (KiCad official)

- Symbol: `SK315U`
- Footprint: `Diode_SMD:D_SMB`
- 3D model: SMB (KiCad packages3D, STEP)
- 3D model files: `sk315u-etched.step` / `sk315u-etched.glb` carry the MPN laser-etched on the die in a toggleable `Adom.LaserEtch` group (Fusion-ready); `sk315u.step` / `sk315u.glb` are the bare package body.

## Provenance

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

- **Datasheet:** [DIYI Elec Tech datasheet](docs/sk315u-datasheet.pdf) (3 pp, sha256 `d52048cb5508e95a`, 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/sk315u-datasheet.pdf)