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12 100.4.5
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Shenzhen Jinkaisheng Elec Disposable Fuses, 1206. Pinout cross-checked by two models against the datasheet, KiCad symbol/footprint/3D.
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12 100.4.5
Shenzhen Jinkaisheng Elec · Disposable Fuses · 1206
12 100.4.5 from Shenzhen Jinkaisheng Elec, 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 | One end terminal of the fuse element (0.51±0.25 mm wide), 4.5A rated, 72V DC, non-polarized and interchangeable with the other terminal. |
| 2 | 2 | passive | Other end terminal of the fuse element (0.51±0.25 mm wide), 4.5A rated, 72V DC, non-polarized and interchangeable with the other terminal. |
Key specifications
| Parameter | Value |
|---|---|
| Manufacturer | Shenzhen Jinkaisheng Elec |
| 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 |
|---|---|---|---|---|---|---|---|
| Time at 1.0In | 4 | hour | Rated current 250mA~5A, 1.0In | 1 | |||
| Time at 2.5In | 5 | sec | Rated current 250mA~5A, 2.5In | 1 | |||
| Rated Current | 4.5 | A | 1 | ||||
| Typical Cold Resistance | 27 | mOhms | Measured at <10% of rated current, ambient 25℃ | 1 | |||
| Typical Voltage Drop | 164 | mV | 1 | ||||
| Typical Pre-Arcing I2t | 2.62 | A2Sec | Measured at 10In current | 1 |
CAD (KiCad official)
- Symbol:
12 100.4.5 - Footprint:
Fuse:Fuse_1206_3216Metric - 3D model: 1206 (KiCad packages3D, STEP)
- 3D model files:
12-100-4-5-etched.step/12-100-4-5-etched.glbcarry the MPN laser-etched on the die in a toggleableAdom.LaserEtchgroup (Fusion-ready);12-100-4-5.step/12-100-4-5.glbare the bare package body.
Provenance
Data extracted from the manufacturer datasheet, not a distributor listing:
- Datasheet: Shenzhen Jinkaisheng Elec datasheet (5 pp, sha256
ba8b123f4f5a746f, retrieved 2026-10-17, tier: lcsc) - Extractor: parts-factory
2.0.0/extract_pins 0.3, primaryclaude-sonnet-5-5(text+vision), consensusclaude-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).
# 12 100.4.5
**Shenzhen Jinkaisheng Elec** · Disposable Fuses · 1206
12 100.4.5 from Shenzhen Jinkaisheng Elec, 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 | One end terminal of the fuse element (0.51±0.25 mm wide), 4.5A rated, 72V DC, non-polarized and interchangeable with the other terminal. |
| 2 | 2 | passive | Other end terminal of the fuse element (0.51±0.25 mm wide), 4.5A rated, 72V DC, non-polarized and interchangeable with the other terminal. |
## Key specifications
| Parameter | Value |
|---|---|
| Manufacturer | Shenzhen Jinkaisheng Elec |
| 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 |
|---|---|---|---|---|---|---|---|
| Time at 1.0In | | 4 | | | hour | Rated current 250mA~5A, 1.0In | 1 |
| Time at 2.5In | | | | 5 | sec | Rated current 250mA~5A, 2.5In | 1 |
| Rated Current | | | 4.5 | | A | | 1 |
| Typical Cold Resistance | | | 27 | | mOhms | Measured at <10% of rated current, ambient 25℃ | 1 |
| Typical Voltage Drop | | | 164 | | mV | | 1 |
| Typical Pre-Arcing I2t | | | 2.62 | | A2Sec | Measured at 10In current | 1 |
## CAD (KiCad official)
- Symbol: `12 100.4.5`
- Footprint: `Fuse:Fuse_1206_3216Metric`
- 3D model: 1206 (KiCad packages3D, STEP)
- 3D model files: `12-100-4-5-etched.step` / `12-100-4-5-etched.glb` carry the MPN laser-etched on the die in a toggleable `Adom.LaserEtch` group (Fusion-ready); `12-100-4-5.step` / `12-100-4-5.glb` are the bare package body.
## Provenance
Data extracted from the manufacturer datasheet, not a distributor listing:
- **Datasheet:** [Shenzhen Jinkaisheng Elec datasheet](https://jlcpcb.com/api/file/downloadByFileSystemAccessId/8588911192056745984) (5 pp, sha256 `ba8b123f4f5a746f`, retrieved 2026-10-17, 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/12-100-4-5-datasheet.pdf)