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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.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 (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