component
SMD1812-300C-30V
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.
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SMD1812-300C-30V
BNstar · Resettable Fuses · 1812
SMD1812-300C-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 | 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 |
|---|---|---|---|---|---|---|---|
| Hold current | IH | 3 | A | 25℃ still air, reflow 260℃ for 20 s; defined as maximum current at which device will not trip | 1 | ||
| Trip current | IT | 6 | A | 25℃ still air, reflow 260℃ for 20 s; defined as minimum current at which device will always trip | 1 | ||
| Maximum continuous voltage | Vmax | 30 | V | Continuous voltage at rated current | 1 | ||
| Maximum fault current | Imax | 50 | A | At rated voltage | 1 | ||
| Maximum time to trip | Ttrip | 4 | s | 25℃; at assigned trip current 8.0 A | 1 | ||
| Minimum resistance (initial, un-soldered) | Rmin | 0.01 | Ω | 25℃; initial un-soldered state | 1 | ||
| Maximum resistance one hour after reflow | R1max | 0.06 | Ω | 25℃; measured one hour after reflow soldering of 260℃ for 20 s | 1 | ||
| Typical power dissipation | Pdtyp | 0.8 | W | In still air environment | 1 |
CAD (KiCad official)
- Symbol:
SMD1812-300C-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:
smd1812-300c-30v-etched.step/smd1812-300c-30v-etched.glbcarry the MPN laser-etched on the die in a toggleableAdom.LaserEtchgroup (Fusion-ready);smd1812-300c-30v.step/smd1812-300c-30v.glbare the bare package body.
Provenance
Data extracted from the manufacturer datasheet, not a distributor listing:
- Datasheet: BNstar datasheet (3 pp, sha256
9fef407dbc32b263, retrieved 2026-10-14, 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).
# SMD1812-300C-30V
**BNstar** · Resettable Fuses · 1812
SMD1812-300C-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 | 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 |
|---|---|---|---|---|---|---|---|
| Hold current | IH | | | 3 | A | 25℃ still air, reflow 260℃ for 20 s; defined as maximum current at which device will not trip | 1 |
| Trip current | IT | 6 | | | A | 25℃ still air, reflow 260℃ for 20 s; defined as minimum current at which device will always trip | 1 |
| Maximum continuous voltage | Vmax | | | 30 | V | Continuous voltage at rated current | 1 |
| Maximum fault current | Imax | | | 50 | A | At rated voltage | 1 |
| Maximum time to trip | Ttrip | | | 4 | s | 25℃; at assigned trip current 8.0 A | 1 |
| Minimum resistance (initial, un-soldered) | Rmin | 0.01 | | | Ω | 25℃; initial un-soldered state | 1 |
| Maximum resistance one hour after reflow | R1max | | | 0.06 | Ω | 25℃; measured one hour after reflow soldering of 260℃ for 20 s | 1 |
| Typical power dissipation | Pdtyp | | 0.8 | | W | In still air environment | 1 |
## CAD (KiCad official)
- Symbol: `SMD1812-300C-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: `smd1812-300c-30v-etched.step` / `smd1812-300c-30v-etched.glb` carry the MPN laser-etched on the die in a toggleable `Adom.LaserEtch` group (Fusion-ready); `smd1812-300c-30v.step` / `smd1812-300c-30v.glb` are the bare package body.
## Provenance
Data extracted from the manufacturer datasheet, not a distributor listing:
- **Datasheet:** [BNstar datasheet](docs/smd1812-300c-30v-datasheet.pdf) (3 pp, sha256 `9fef407dbc32b263`, retrieved 2026-10-14, 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](docs/smd1812-300c-30v-datasheet.pdf)