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SMD1812-150C-24V

BNstar · Resettable Fuses · 1812

SMD1812-150C-24V from BNstar, in a 1812. 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 Non-polarized PTC terminal (one end cap of the 1812 body); device is rated 1.5 A hold, 3.0 A trip, 24.0 V max, 50 A max fault current.
2 2 passive Non-polarized PTC terminal (opposite end cap of the 1812 body); device is rated 1.5 A hold, 3.0 A trip, 24.0 V max, 50 A max fault current.

Key specifications

Parameter Value
Manufacturer BNstar
Package 1812
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 current IH 1.5 A 25℃ still air 1
Trip current IT 3 A 25℃ still air 1
Maximum continuous voltage (rated voltage) Vmax 24 V at rated current 1
Maximum fault current Imax 50 A at rated voltage 1
Maximum time to trip Ttrip 0.5 s at 8.0 A assigned trip current, reflow 260℃ 20 s 1
Minimum resistance (initial, un-soldered) Rmin 0.04 Ω initial (un-soldered) state 1
Maximum resistance at 25℃ R1max 0.16 Ω 25℃, measured one hour after reflow soldering 260℃ for 20 sec 1
Dimension A A 4.37 4.73 mm 1
Dimension B B 3.07 3.41 mm 1
Dimension C C 0.5 1.2 mm 1
Dimension D D 0.3 mm 1
Dimension E E 0.25 mm 1
Recommended storage temperature 40 ℃ recommended storage conditions, 70% R.H. max 2
Recommended storage humidity 70 % R.H. recommended storage conditions, 40℃ max 2
Typical power dissipation Pdtyp 1 W device in tripped state, still air environment 1

CAD (KiCad official)

  • Symbol: SMD1812-150C-24V
  • Footprint: Fuse:Fuse_1812_4532Metric
  • 3D model: 1812, generated from the KiCad footprint (body from the F.Fab outline, terminals on the pads, 0.9 mm nominal 1806 height). Neither the vendor nor KiCad ships a 3D model for this package, so the dimensions are nominal, not the manufacturer's CAD (STEP)
  • 3D model files: smd1812-150c-24v-etched.step / smd1812-150c-24v-etched.glb carry the MPN laser-etched on the die in a toggleable Adom.LaserEtch group (Fusion-ready); smd1812-150c-24v.step / smd1812-150c-24v.glb are the bare package body.

Provenance

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

  • Datasheet: BNstar datasheet (3 pp, sha256 8f6f8290e32c4f11, 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