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Contents

README

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K1206L050YR

KUU · Resettable Fuses · 1206

K1206L050YR 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 Terminal 1 of an unpolarised fuse; either orientation.
2 2 passive Terminal 2 of an unpolarised fuse; either orientation.

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
Minimum resistance (R min) - resistance range R min 0.15 Ω 1
Maximum resistance (R1 max) - resistance range R1 max 0.75 Ω 1
Maximum voltage (V max) V max 13.2 V 1
Maximum current (I max) I max 40 A 1
Maximum operating time (time to trip) 0.1 s 1
Hold current (IH) IH 0.5 A 25℃ 1
Trip current (IT) IT 1 A 1
Power dissipation (Pd typ) Pd typ 0.4 W 1
Hold current (IH) at -40℃ ambient IH 0.76 A Ambient -40℃ (hold current vs temperature table) 2
Hold current (IH) at -20℃ ambient IH 0.68 A Ambient -20℃ (hold current vs temperature table) 2
Hold current (IH) at 0℃ ambient IH 0.59 A Ambient 0℃ (hold current vs temperature table) 2
Hold current (IH) at 40℃ ambient IH 0.44 A Ambient 40℃ (hold current vs temperature table) 2
Hold current (IH) at 50℃ ambient IH 0.4 A Ambient 50℃ (hold current vs temperature table) 2
Hold current (IH) at 60℃ ambient IH 0.35 A Ambient 60℃ (hold current vs temperature table) 2
Hold current (IH) at 70℃ ambient IH 0.32 A Ambient 70℃ (hold current vs temperature table) 2
Hold current (IH) at 85℃ ambient IH 0.26 A Ambient 85℃ (hold current vs temperature table) 2

CAD (KiCad official)

  • Symbol: K1206L050YR
  • Footprint: Fuse:Fuse_1206_3216Metric
  • 3D model: 1206 (KiCad packages3D, STEP)
  • 3D model files: k1206l050yr-etched.step / k1206l050yr-etched.glb carry the MPN laser-etched on the die in a toggleable Adom.LaserEtch group (Fusion-ready); k1206l050yr.step / k1206l050yr.glb are the bare package body.

Provenance

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

  • Datasheet: KUU datasheet (2 pp, sha256 fcf3f287c9c973ae, retrieved 2026-10-19, tier: lcsc)
  • Extractor: parts-factory 2.0.0 / extract_pins, primary two-terminal convention (convention), consensus off (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