component
SMD1812-300C-24V
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
markdownSMD1812-300C-24V
BNstar · Resettable Fuses · 1812
SMD1812-300C-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 | 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 | 6 | A | 25℃ | 1 | ||
| Minimum resistance (initial, un-soldered) | Rmin | 0.01 | Ω | 25℃ | 1 | ||
| Maximum resistance one hour after reflow | R1max | 0.05 | Ω | 25℃ | 1 | ||
| Maximum time to trip | Ttrip | 4 | S | at assigned current 8.0 A | 1 | ||
| Maximum continuous voltage (Vmax) | Vmax | 24 | V | at rated current | 1 | ||
| Maximum fault current (Imax) | Imax | 50 | A | at rated voltage | 1 | ||
| Recommended storage temperature | 40 | ℃ | recommended storage conditions | 2 | |||
| Recommended storage relative humidity | 70 | % R.H. | recommended storage conditions | 2 | |||
| Hold current | IH | 3 | A | 25℃ still air | 1 | ||
| Typical power dissipation | Pdtyp | 0.8 | W | 1 |
CAD (KiCad official)
- Symbol:
SMD1812-300C-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:
smd1812-300c-24v-etched.step/smd1812-300c-24v-etched.glbcarry the MPN laser-etched on the die in a toggleableAdom.LaserEtchgroup (Fusion-ready);smd1812-300c-24v.step/smd1812-300c-24v.glbare the bare package body.
Provenance
Data extracted from the manufacturer datasheet, not a distributor listing:
- Datasheet: BNstar datasheet (3 pp, sha256
2e0c526b4f8b486a, retrieved 2026-10-19, 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).