# KNSMD100

**KUU** · Resettable Fuses · 1206

KNSMD100 from KUU, in a 1206. 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 | 1 | passive | Non-polarized resettable PTC fuse terminal, rated IH 1.00 A hold / IT 2.00 A trip at 25℃, Vmax 16 V, Imax 100 A. |
| 2 | 2 | passive | Non-polarized resettable PTC fuse terminal, rated IH 1.00 A hold / IT 2.00 A trip at 25℃, Vmax 16 V, Imax 100 A. |

## Key specifications

| Parameter | Value |
|---|---|
| Manufacturer | KUU |
| Package | 1206 |
| Category | Circuit Protection |
| 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 |
|---|---|---|---|---|---|---|---|
| Holding current | IH |  |  | 1 | A | 25℃ still air | 1 |
| Tripping current | IT | 2 |  |  | A | 25℃ still air | 1 |
| Minimum resistance prior to trip | R min | 0.06 |  |  | Ω | 25℃ | 1 |
| Maximum resistance one hour post reflow | R1max |  |  | 0.28 | Ω | measured one hours post reflow at 25℃ | 1 |
| Maximum voltage withstand | Vmax |  |  | 16 | V | at rated current | 1 |
| Maximum fault current withstand | I max |  |  | 100 | A | at rated voltage | 1 |
| Maximum time to trip | Ttrip |  |  | 0.1 | s | at assigned current 8.00 A | 1 |
| Reflow average ramp-up rate |  |  |  | 3 | ℃/second | average ramp-up rate in reflow profile | 1 |
| Reflow ramp-down rate |  |  |  | 6 | ℃/second | ramp-down rate in reflow profile | 1 |
| Rated working power | Pd |  | 0.6 |  | W | rated working power | 1 |
| Hold current at maximum ambient | IH |  | 1.6 |  | A | maximum ambient operating temperature -40℃ | 1 |
| Hold current at maximum ambient | IH |  | 1.4 |  | A | maximum ambient operating temperature -20℃ | 1 |
| Hold current at maximum ambient | IH |  | 1.3 |  | A | maximum ambient operating temperature 0℃ | 1 |
| Hold current at maximum ambient | IH |  | 1 |  | A | maximum ambient operating temperature 25℃ | 1 |
| Hold current at maximum ambient | IH |  | 0.9 |  | A | maximum ambient operating temperature 40℃ | 1 |
| Hold current at maximum ambient | IH |  | 0.8 |  | A | maximum ambient operating temperature 50℃ | 1 |
| Hold current at maximum ambient | IH |  | 0.75 |  | A | maximum ambient operating temperature 60℃ | 1 |
| Hold current at maximum ambient | IH |  | 0.7 |  | A | maximum ambient operating temperature 70℃ | 1 |
| Hold current at maximum ambient | IH |  | 0.6 |  | A | maximum ambient operating temperature 85℃ | 1 |
| Trip current at maximum ambient | IT |  | 3.2 |  | A | maximum ambient operating temperature -40℃ | 1 |
| Trip current at maximum ambient | IT |  | 2.8 |  | A | maximum ambient operating temperature -20℃ | 1 |
| Trip current at maximum ambient | IT |  | 2.6 |  | A | maximum ambient operating temperature 0℃ | 1 |
| Trip current at maximum ambient | IT |  | 2 |  | A | maximum ambient operating temperature 25℃ | 1 |
| Trip current at maximum ambient | IT |  | 1.8 |  | A | maximum ambient operating temperature 40℃ | 1 |
| Trip current at maximum ambient | IT |  | 1.6 |  | A | maximum ambient operating temperature 50℃ | 1 |
| Trip current at maximum ambient | IT |  | 1.5 |  | A | maximum ambient operating temperature 60℃ | 1 |
| Trip current at maximum ambient | IT |  | 1.4 |  | A | maximum ambient operating temperature 70℃ | 1 |
| Trip current at maximum ambient | IT |  | 1.2 |  | A | maximum ambient operating temperature 85℃ | 1 |

## CAD (KiCad official)

- Symbol: `KNSMD100`
- Footprint: `Fuse:Fuse_1206_3216Metric`
- 3D model: 1206 (KiCad packages3D, STEP)
- 3D model files: `knsmd100-etched.step` / `knsmd100-etched.glb` carry the MPN laser-etched on the die in a toggleable `Adom.LaserEtch` group (Fusion-ready); `knsmd100.step` / `knsmd100.glb` are the bare package body.

## Provenance

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

- **Datasheet:** [KUU datasheet](docs/knsmd100-datasheet.pdf) (1 pp, sha256 `6b5f1960aeca8579`, retrieved 2026-10-19, tier: lcsc)
- **Extractor:** parts-factory `2.0.0` / `extract_pins 0.3`, primary `claude-sonnet-5-5` (text+vision), consensus `claude-opus-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/knsmd100-datasheet.pdf)