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SMD1812-030C-30V

Public Made by Adom

by adom

BNstar Resettable Fuses, 1812. Pinout cross-checked by two models against the datasheet, KiCad symbol/footprint/3D.

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SMD1812-030C-30V

BNstar · Resettable Fuses · 1812

SMD1812-030C-30V 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 One terminal of the non-polarized resettable PTC fuse (hold current 0.30 A, trip current 0.60 A, Vmax 30.0 V, Imax 40 A).
2 2 passive Second terminal of the non-polarized resettable PTC fuse (hold current 0.30 A, trip current 0.60 A, Vmax 30.0 V, Imax 40 A).

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
Minimum resistance in initial (un-soldered) state Rmin 0.25 Ω 25℃, initial un-soldered state 1
Maximum resistance one hour after reflow R1max 3 Ω 25℃, measured one hour after reflow soldering 260℃ for 20 s 1
Hold current IH 0.3 A 25℃ still air 1
Trip current IT 0.6 A 25℃ still air 1
Maximum continuous voltage Vmax 30 V Continuous, at rated current 1
Maximum fault current Imax 40 A At rated voltage 1
Time to trip Ttrip 0.1 s At 8.0 A assigned current 1
Typical power dissipation Pdtyp 0.8 W In state, air environment 1
Maximum hold current at ambient -40 ℃ IH(Ta) 0.44 A Thermal derating, ambient -40 ℃ 2
Maximum hold current at ambient -20 ℃ IH(Ta) 0.39 A Thermal derating, ambient -20 ℃ 2
Maximum hold current at ambient 0 ℃ IH(Ta) 0.35 A Thermal derating, ambient 0 ℃ 2
Maximum hold current at ambient 25 ℃ IH(Ta) 0.3 A Thermal derating, ambient 25 ℃ 2
Maximum hold current at ambient 40 ℃ IH(Ta) 0.26 A Thermal derating, ambient 40 ℃ 2
Maximum hold current at ambient 50 ℃ IH(Ta) 0.23 A Thermal derating, ambient 50 ℃ 2
Maximum hold current at ambient 60 ℃ IH(Ta) 0.21 A Thermal derating, ambient 60 ℃ 2
Maximum hold current at ambient 70 ℃ IH(Ta) 0.18 A Thermal derating, ambient 70 ℃ 2
Maximum hold current at ambient 85 ℃ IH(Ta) 0.15 A Thermal derating, ambient 85 ℃ 2
Recommended storage temperature maximum 40 ℃ Recommended storage conditions 2
Recommended storage relative humidity maximum 70 %R.H. Recommended storage conditions 2

CAD (KiCad official)

  • Symbol: SMD1812-030C-30V
  • 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: smd1812-030c-30v-etched.step / smd1812-030c-30v-etched.glb carry the MPN laser-etched on the die in a toggleable Adom.LaserEtch group (Fusion-ready); smd1812-030c-30v.step / smd1812-030c-30v.glb are the bare package body.

Provenance

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

  • Datasheet: BNstar datasheet (3 pp, sha256 ad1994e0fabbf29c, retrieved 2026-10-14, 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