# WEOS61089-17F

**Wayon** · Surge Protection Devices (SPDs) · SOP-8

WEOS61089-17F from Wayon, in a SOP-8. Pinout and pin descriptions extracted from the manufacturer datasheet by ds2sf; symbol, footprint, and 3D from KiCad-official CAD.

## Pinout

| Pin | Name | Type | Function |
|---|---|---|---|
| 1 | K1 | passive | Cathode 1 (Tip). Line-side terminal of thyristor/diode pair 1 protecting the Tip conductor. |
| 2 | G | input | Gate terminal. Referenced to -VBAT to program the negative firing voltage of both thyristors. IGT = 5 mA max, VGT = 2.5 V max. |
| 3 | NC | unconnected | No connect. Leave floating or tie to a non-critical net. |
| 4 | K2 | passive | Cathode 2 (Ring). Line-side terminal of thyristor/diode pair 2 protecting the Ring conductor. |
| 5 | K2 | passive | Cathode 2 (Ring). Second bond to the Ring-side cathode; internally common with pin 4 to reduce parasitic inductance for fast transients. |
| 6 | A | passive | Anode (Ground). Common anode of both protection thyristors and clamp diodes; tie to system ground. |
| 7 | A | passive | Anode (Ground). Second ground bond; internally common with pin 6 to reduce Ldi/dt drop during a surge. |
| 8 | K1 | passive | Cathode 1 (Tip). Second bond to the Tip-side cathode; internally common with pin 1 to reduce parasitic inductance for fast transients. |

## Key specifications

| Parameter | Value |
|---|---|
| Manufacturer | Wayon |
| Package | SOP-8 |
| Category | Circuit Protection |
| Pins | 8 |

## Ordering variants

Same part, different packaging or reel option.

- `WEOS61089-17F`

## CAD (KiCad official)

- Symbol: `WEOS61089-17F`
- Footprint: `Package_SO:SOIC-8_3.9x4.9mm_P1.27mm`
- 3D model: SOP-8 (KiCad packages3D, STEP)
- 3D model files: `weos61089-17f-etched.step` / `weos61089-17f-etched.glb` carry the MPN laser-etched on the die in a toggleable `Adom.LaserEtch` group (Fusion-ready); `weos61089-17f.step` / `weos61089-17f.glb` are the bare package body.

## Provenance

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

- **Datasheet:** [Wayon datasheet](https://jlcpcb.com/api/file/downloadByFileSystemAccessId/8590184557497511936) (5 pp, sha256 `2b13e1b4458b9126`, retrieved 2026-08-17, tier: lcsc)
- **Extractor:** `ds2sf` (Claude). Every pin and dimension is cited to a datasheet page; it refuses to fabricate.
- **CAD:** KiCad official libraries (CC-BY-SA 4.0).

[Datasheet PDF](docs/weos61089-17f-datasheet.pdf)