# NSV1SS400T1G

**onsemi** · Switching Diodes · SOD-523

NSV1SS400T1G from onsemi, in a SOD-523. 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 | CATHODE | passive | Cathode terminal of the high-speed switching diode, whose device maximum reverse voltage (VR) is 100 V and maximum forward current (IF) is 200 mAdc. |
| 2 | ANODE | passive | Anode terminal of the high-speed switching diode, with the same device ratings of 100 V maximum reverse voltage and 200 mAdc maximum forward current. |

## Key specifications

| Parameter | Value |
|---|---|
| Manufacturer | onsemi |
| Package | SOD-523 |
| 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 |
|---|---|---|---|---|---|---|---|
| Reverse Voltage Leakage Current | IR |  |  | 0.1 | Adc | VR = 80 Vdc | 1 |
| Diode Capacitance | CD |  |  | 3 | pF | VR = 0 V, f = 1.0 MHz | 1 |
| Forward Voltage | VF |  |  | 1.2 | Vdc | IF = 100 mAdc | 1 |
| Reverse Recovery Time | trr |  |  | 4 | ns | IF = IR = 10 mAdc | 1 |
| Reverse Voltage | VR |  |  | 100 | V |  | 1 |
| Forward Current | IF |  |  | 200 | mAdc |  | 1 |
| Peak Forward Surge Current | IFM(surge) |  |  | 500 | mAdc |  | 1 |
| Junction and Storage Temperature Range | TJ, Tstg | -55 |  | 150 | °C |  | 1 |
| Total Device Dissipation | PD |  |  | 200 | mW | FR-5 Board (Note 1) @ TA = 25°C | 1 |
| Derate above 25°C |  |  |  | 1.57 | mW/°C | FR-5 Board (Note 1), above 25°C | 1 |
| Thermal Resistance, Junction-to-Ambient | RθJA |  |  | 635 | °C/W |  | 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 | • Lead Finish: 100% Matte Sn (Tin) • Qualified Maximum Reflow Temperature: 260°C | 1 |

## CAD (KiCad official)

- Symbol: `NSV1SS400T1G`
- Footprint: `Diode_SMD:D_SOD-523`
- 3D model: SOD-523 (KiCad packages3D, STEP)
- 3D model files: `nsv1ss400t1g-etched.step` / `nsv1ss400t1g-etched.glb` carry the MPN laser-etched on the die in a toggleable `Adom.LaserEtch` group (Fusion-ready); `nsv1ss400t1g.step` / `nsv1ss400t1g.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/8586188324042117120) (3 pp, sha256 `3ae2ef6bc3d98883`, retrieved 2026-10-16, tier: lcsc)
- **Extractor:** parts-factory `2.0.0` / `extract_pins 0.3`, primary `claude-haiku-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/nsv1ss400t1g-datasheet.pdf)