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12 100.3
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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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12 100.3
Shenzhen Jinkaisheng Elec · Disposable Fuses · 1206
12 100.3 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 terminal of the non-polarized 3A fast-acting fuse (3.20mm x 1.60mm body, 0.50mm end terminations); rated 24V/32V/63V/72V DC, interchangeable with terminal 2. |
| 2 | 2 | passive | Second terminal of the non-polarized 3A fast-acting fuse (3.20mm x 1.60mm body, 0.50mm end terminations); typical cold resistance 48 mOhms, breaking capacity 300A@24Vdc. |
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 |
|---|---|---|---|---|---|---|---|
| Rated current (nominal value, MPN 12 100.3) | 3 | A | 1 | ||||
| Typical cold resistance | 48 | mOhms | measured at <10% of rated current in ambient temperature of 25℃ | 1 | |||
| Typical voltage drop | 187 | mV | 1 | ||||
| Typical pre-arcing I2t | I2t | 1.39 | A2Sec | measured at 10In current | 1 | ||
| Operating temperature | -55 | 150 | ℃ | with proper correction factor applied | 5 |
CAD (KiCad official)
- Symbol:
12 100.3 - Footprint:
Fuse:Fuse_1206_3216Metric - 3D model: 1206 (KiCad packages3D, STEP)
- 3D model files:
12-100-3-etched.step/12-100-3-etched.glbcarry the MPN laser-etched on the die in a toggleableAdom.LaserEtchgroup (Fusion-ready);12-100-3.step/12-100-3.glbare the bare package body.
Provenance
Data extracted from the manufacturer datasheet, not a distributor listing:
- Datasheet: Shenzhen Jinkaisheng Elec datasheet (5 pp, sha256
4519cf578aca521d, retrieved 2026-10-18, 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).
# 12 100.3
**Shenzhen Jinkaisheng Elec** · Disposable Fuses · 1206
12 100.3 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 terminal of the non-polarized 3A fast-acting fuse (3.20mm x 1.60mm body, 0.50mm end terminations); rated 24V/32V/63V/72V DC, interchangeable with terminal 2. |
| 2 | 2 | passive | Second terminal of the non-polarized 3A fast-acting fuse (3.20mm x 1.60mm body, 0.50mm end terminations); typical cold resistance 48 mOhms, breaking capacity 300A@24Vdc. |
## 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 |
|---|---|---|---|---|---|---|---|
| Rated current (nominal value, MPN 12 100.3) | | | 3 | | A | | 1 |
| Typical cold resistance | | | 48 | | mOhms | measured at <10% of rated current in ambient temperature of 25℃ | 1 |
| Typical voltage drop | | | 187 | | mV | | 1 |
| Typical pre-arcing I2t | I2t | | 1.39 | | A2Sec | measured at 10In current | 1 |
| Operating temperature | | -55 | | 150 | ℃ | with proper correction factor applied | 5 |
## CAD (KiCad official)
- Symbol: `12 100.3`
- Footprint: `Fuse:Fuse_1206_3216Metric`
- 3D model: 1206 (KiCad packages3D, STEP)
- 3D model files: `12-100-3-etched.step` / `12-100-3-etched.glb` carry the MPN laser-etched on the die in a toggleable `Adom.LaserEtch` group (Fusion-ready); `12-100-3.step` / `12-100-3.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/8590219934191292416) (5 pp, sha256 `4519cf578aca521d`, retrieved 2026-10-18, 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/12-100-3-datasheet.pdf)