component
SMD1812-110C-33V
Public Made by Adomby 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.
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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README
markdownSMD1812-110C-33V
BNstar · Resettable Fuses · 1812
SMD1812-110C-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 |
|---|---|---|---|---|---|---|---|
| Initial (un-soldered) minimum resistance | Rmin | 0.045 | Ω | 25℃ | 1 | ||
| Maximum resistance one hour after reflow | R1max | 0.25 | Ω | 25℃, measured one hour after reflow soldering of 260℃ for 20 sec | 1 | ||
| Hold current | IH | 1.1 | A | 25℃ still air, reflow soldering of 260℃ for 20 sec | 1 | ||
| Trip current | IT | 2.2 | A | 25℃ still air, reflow soldering of 260℃ for 20 sec | 1 | ||
| Maximum continuous voltage | Vmax | 33 | V | at rated current | 1 | ||
| Maximum fault current | Imax | 40 | A | at rated voltage | 1 | ||
| Maximum time to trip | Ttrip | 0.3 | S | 25℃, at 8.0 A | 1 | ||
| Typical power dissipation | Pdtyp | 0.8 | W | when in state air environment | 1 | ||
| Hold current derating at ambient -40℃ | 1.6 | A | ambient -40℃ | 2 | |||
| Hold current derating at ambient -20℃ | 1.45 | A | ambient -20℃ | 2 | |||
| Hold current derating at ambient 0℃ | 1.28 | A | ambient 0℃ | 2 | |||
| Hold current derating at ambient 25℃ | 1.1 | A | ambient 25℃ | 2 | |||
| Hold current derating at ambient 40℃ | 0.92 | A | ambient 40℃ | 2 | |||
| Hold current derating at ambient 50℃ | 0.83 | A | ambient 50℃ | 2 | |||
| Hold current derating at ambient 60℃ | 0.71 | A | ambient 60℃ | 2 | |||
| Hold current derating at ambient 70℃ | 0.66 | A | ambient 70℃ | 2 | |||
| Hold current derating at ambient 85℃ | 0.52 | A | ambient 85℃ | 2 | |||
| Recommended storage temperature | 40 | °C | recommended storage conditions | 2 | |||
| Recommended storage relative humidity | 70 | % R.H. | recommended storage conditions | 2 |
CAD (KiCad official)
- Symbol:
SMD1812-110C-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:
smd1812-110c-33v-etched.step/smd1812-110c-33v-etched.glbcarry the MPN laser-etched on the die in a toggleableAdom.LaserEtchgroup (Fusion-ready);smd1812-110c-33v.step/smd1812-110c-33v.glbare the bare package body.
Provenance
Data extracted from the manufacturer datasheet, not a distributor listing:
- Datasheet: BNstar datasheet (3 pp, sha256
07ff028cd504dad3, retrieved 2026-10-18, tier: lcsc) - Extractor: parts-factory
2.0.0/extract_pins, primarytwo-terminal convention(convention), consensusoff(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).