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SMD1812-300C-13.2V
Public Made by Adomby adom
BNstar Resettable Fuses, 1812. Pinout cross-checked by two models against the datasheet, 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-13.2V
BNstar · Resettable Fuses · 1812
SMD1812-300C-13.2V 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 end terminal of the non-polarized resettable PTC fuse (Hold current 3.0 A, Trip current 6.0 A at 25°C, Vmax 13.2 V, Imax 50 A). |
| 2 | 2 | passive | Other end terminal of the non-polarized resettable PTC fuse (Hold current 3.0 A, Trip current 6.0 A at 25°C, Vmax 13.2 V, Imax 50 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 (un-soldered initial state) | Rmin | 0.01 | Ω | Initial (un-soldered) state | 1 | ||
| Maximum resistance at 25℃ one hour after reflow | R1max | 0.05 | Ω | 25℃, one hour after reflow soldering 260℃ for 20 s | 1 | ||
| Maximum time to trip | Ttrip | 8 | s | At 4.0 A, 25℃ still air | 1 | ||
| Maximum continuous voltage | Vmax | 13.2 | V | At rated current | 1 | ||
| Maximum fault current | Imax | 50 | A | At rated voltage | 1 | ||
| Hold current | IH | 3 | A | 25℃ still air, maximum current at which device does not trip | 1 | ||
| Trip current | IT | 6 | A | 25℃ still air, minimum current at which device always trips | 1 | ||
| Typical power dissipation | Pdtyp | 0.8 | W | Tripped state in air environment | 1 | ||
| Recommended storage temperature maximum | 40 | ℃ | Recommended storage conditions | 2 | |||
| Recommended storage relative humidity maximum | 70 | %R.H. | Recommended storage conditions | 2 | |||
| Hold current at ambient -40℃ | 4.15 | A | Thermal derating, ambient -40℃ | 2 | |||
| Hold current at ambient -20℃ | 3.76 | A | Thermal derating, ambient -20℃ | 2 | |||
| Hold current at ambient 0℃ | 3.46 | A | Thermal derating, ambient 0℃ | 2 | |||
| Hold current at ambient 25℃ | 3 | A | Thermal derating, ambient 25℃ | 2 | |||
| Hold current at ambient 40℃ | 2.55 | A | Thermal derating, ambient 40℃ | 2 | |||
| Hold current at ambient 50℃ | 2.28 | A | Thermal derating, ambient 50℃ | 2 | |||
| Hold current at ambient 60℃ | 2.01 | A | Thermal derating, ambient 60℃ | 2 | |||
| Hold current at ambient 70℃ | 1.61 | A | Thermal derating, ambient 70℃ | 2 | |||
| Hold current at ambient 85℃ | 1.33 | A | Thermal derating, ambient 85℃ | 2 |
CAD (KiCad official)
- Symbol:
SMD1812-300C-13.2V - 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-13-2v-etched.step/smd1812-300c-13-2v-etched.glbcarry the MPN laser-etched on the die in a toggleableAdom.LaserEtchgroup (Fusion-ready);smd1812-300c-13-2v.step/smd1812-300c-13-2v.glbare the bare package body.
Provenance
Data extracted from the manufacturer datasheet, not a distributor listing:
- Datasheet: BNstar datasheet (3 pp, sha256
98afaf61062bf559, retrieved 2026-10-19, tier: lcsc) - Extractor: parts-factory
2.0.0/extract_pins 0.3, primaryclaude-sonnet-5-5(text+vision), consensusclaude-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).