# NSVBAS21SLT1G

**onsemi** · Switching Diodes · SOT-23

NSVBAS21SLT1G from onsemi, in a SOT-23. 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 | ANODE | passive | Anode of the first diode in the series pair. Forward current up to 225 mA peak; series pair blocks 250 Vdc reverse. |
| 2 | CATHODE | passive | Cathode of the second diode in the series pair. Together with pin 1 forms the two external ends of the series-connected diode string. |
| 3 | CATHODE/ANODE | passive | Common node between the two series diodes: cathode of diode 1 tied to anode of diode 2. Can be left floating for a simple series stack or used as a mid-tap. |

## Key specifications

| Parameter | Value |
|---|---|
| Manufacturer | onsemi |
| Package | SOT-23 |
| Category | Diodes |
| Pins | 3 |

## Ordering variants

Same part, different packaging or reel option.

- `NSVBAS21SLT1G`

## CAD (KiCad official)

- Symbol: `NSVBAS21SLT1G`
- Footprint: `Package_TO_SOT_SMD:SOT-23`
- 3D model: SOT-23 (KiCad packages3D, STEP)
- 3D model files: `nsvbas21slt1g-etched.step` / `nsvbas21slt1g-etched.glb` carry the MPN laser-etched on the die in a toggleable `Adom.LaserEtch` group (Fusion-ready); `nsvbas21slt1g.step` / `nsvbas21slt1g.glb` are the bare package body.

## Provenance

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

- **Datasheet:** [onsemi datasheet](https://jlcpcb.com/api/file/downloadByFileSystemAccessId/8588934922887172097) (3 pp, sha256 `4d06a921df2aab3a`, 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/nsvbas21slt1g-datasheet.pdf)