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SMD1812-075C-33V

Public Made by Adom

by adom

BNstar Resettable Fuses, 1812. Unpolarised two-terminal part: the datasheet prints no pin numbers, so pins 1 and 2 follow the library convention, KiCad symbol/footprint/3D.

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3D Model

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Symbol & Footprint

Schematic Symbol

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PCB Footprint

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Datasheet

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Contents

README

markdown

SMD1812-075C-33V

BNstar · Resettable Fuses · 1812

SMD1812-075C-33V 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 Terminal 1 of an unpolarised fuse; either orientation.
2 2 passive Terminal 2 of an unpolarised fuse; either orientation.

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
Trip current IT 1.5 A 25°C still air, reflow soldering 260°C for 20 sec 2
Maximum fault current Imax 40 A At rated voltage 2
Maximum continuous voltage Vmax 33 V At rated current 2
Maximum resistance at 25°C after reflow R1max 0.45 Ω 25°C, measured one hour after reflow soldering 260°C for 20 sec 2
Hold current IH 0.75 A 25°C still air, reflow soldering 260°C for 20 sec 2
Resistance after passive aging R1max 0.45 Ω 85°C, 1000 hours 2
Resistance after moisture resistance R1max 0.45 Ω 85% RH, 85°C, 1000 hrs 2
Resistance after thermal shock R1max 0.45 Ω MIL-STD-202 Method 107G, +85°C/-40°C, 20 times 2
Recommended storage temperature 40 °C Recommended storage conditions 2
Recommended storage relative humidity 70 %R.H. Recommended storage conditions 2
Maximum ambient operating temperature range -40 85 °C Thermal derating table, maximum ambient operating temperature 2
Hold current derating at ambient 1.1 A Ambient -40 °C 2
Hold current derating at ambient 0.99 A Ambient -20 °C 2
Hold current derating at ambient 0.87 A Ambient 0 °C 2
Hold current derating at ambient 0.75 A Ambient 25 °C 2
Hold current derating at ambient 0.63 A Ambient 40 °C 2
Hold current derating at ambient 0.57 A Ambient 50 °C 2
Hold current derating at ambient 0.49 A Ambient 60 °C 2
Hold current derating at ambient 0.45 A Ambient 70 °C 2
Hold current derating at ambient 0.35 A Ambient 85 °C 2

CAD (KiCad official)

  • Symbol: SMD1812-075C-33V
  • 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: smd1812-075c-33v-etched.step / smd1812-075c-33v-etched.glb carry the MPN laser-etched on the die in a toggleable Adom.LaserEtch group (Fusion-ready); smd1812-075c-33v.step / smd1812-075c-33v.glb are the bare package body.

Provenance

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

  • Datasheet: BNstar datasheet (3 pp, sha256 5abf30e38426c8e5, retrieved 2026-10-15, 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