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Contents

README

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12F.20000063AG12S1B02

Xucheng Elec · Disposable Fuses · 1206

12F.20000063AG12S1B02 from Xucheng 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-cap terminal of the 1206 SMD quick-blow fuse (3.2 x 1.6 mm body), non-polarized, rated 63V for the 250mA to 3A versions, with 12F series opening in 5 s or less at 250% (250mA to 3A) of rated current.
2 2 passive Other end-cap terminal of the 1206 SMD quick-blow fuse, interchangeable with the first terminal, with 50A breaking capacity at rated voltage and a maximum temperature rise below 135K at 1x rated current.

Key specifications

Parameter Value
Manufacturer Xucheng 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
Hold time at 100% of rated current 4 h 100% of In (12F row) 4
Opening time at 250% of rated current 5 s 250% of In, 12F quick-blow, 250mA-3A group 4
Temperature rise 135 K 1 In for 1 h, measured after thermal equilibrium within 2 h 4
Rated breaking capacity 50 A DC 63 V (rated voltage); no ignition or bursting 5
Rated voltage 63 V Catalog 12F2000 (2A) rated voltage 2
Wave solder temperature 260 °C Wave solder, RoHS 6
Wave solder time 5 s Wave solder, RoHS 6
Hand solder temperature 360 °C Hand solder, RoHS 6
Hand solder time 1 s Hand solder, RoHS 6
Storage temperature 5 35 °C Storage 6
Storage humidity 25 75 % Storage 6
Storage time 6 months Storage period 6
Rated current 2 A Catalog 12F2000 rated current (In) 2

CAD (KiCad official)

  • Symbol: 12F.20000063AG12S1B02
  • Footprint: Fuse:Fuse_1206_3216Metric
  • 3D model: 1206 (KiCad packages3D, STEP)
  • 3D model files: 12f-20000063ag12s1b02-etched.step / 12f-20000063ag12s1b02-etched.glb carry the MPN laser-etched on the die in a toggleable Adom.LaserEtch group (Fusion-ready); 12f-20000063ag12s1b02.step / 12f-20000063ag12s1b02.glb are the bare package body.

Provenance

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

  • Datasheet: Xucheng Elec datasheet (9 pp, sha256 4b1968f45e8af532, retrieved 2026-10-18, tier: lcsc)
  • Datasheet language: Chinese. Pin names, descriptions, and specs on this page were extracted and translated to English by ds2sf; the linked PDF is the manufacturer original.
  • 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