component
SMD1812-260-12
Public Made by Adomby adom
hongjiacheng Resettable Fuses, 1812. Pinout cross-checked by two models against the datasheet, KiCad symbol/footprint/3D.
Generated by kicad-footprint-generator · KiCad file format 20260206
| Name | Last updated |
|---|---|
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| README.md | 20d ago |
| smd1812-260-12-etched.glb | 20d ago |
| smd1812-260-12-etched.step | 20d ago |
| smd1812-260-12-hero.glb | 20d ago |
| smd1812-260-12-hero.overlay.json | 20d ago |
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| smd1812-260-12.step | 20d ago |
SMD1812-260-12
hongjiacheng · Resettable Fuses · 1812
SMD1812-260-12 from hongjiacheng, 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 terminal of the non-polarized PTC device (left pad of the 1812 body, 1.7±0.1 mm pad on a 3.0±0.1 mm gap); rated Ihold 2.60A, Itrip 5.0A, Vmax 12V, Imax 40A for SMD1812-260-12. |
| 2 | 2 | passive | Other terminal of the non-polarized PTC device (right pad of the 1812 body, 1.7±0.1 mm pad, 3.5±0.1 mm pad height); current passes in either direction with Ri min 0.01 ohm and R1 max 0.07 ohm. |
Key specifications
| Parameter | Value |
|---|---|
| Manufacturer | hongjiacheng |
| 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 in initial (un-soldered) state (Ri min) | Ri | 0.01 | Ω | initial (un-soldered) state | 3 | ||
| Maximum resistance at 25℃ after trip or reflow (R1 max) | R1 | 0.07 | Ω | 25℃, measured one hour after tripping or reflow soldering of 260℃ for 20 sec | 3 | ||
| Trip current (Itrip), minimum | Itrip | 5 | A | 25℃ still air | 3 | ||
| Hold current (Ihold), maximum current without tripping | Ihold | 2.6 | A | 25℃ still air | 3 | ||
| Maximum voltage withstand (Vmax) | Vmax | 12 | V | at rated current (Imax) | 3 | ||
| Maximum fault current withstand (Imax) | Imax | 40 | A | at rated voltage (Vmax) | 3 | ||
| Max. time-to-trip | 2.5 | Sec | paired current column 8.0 A | 3 | |||
| Typical power dissipated in tripped state (Pd typ) | Pd | 0.8 | W | tripped state, 25℃ still air | 3 | ||
| Operating / storage temperature | -40 | 85 | ℃ | operating / storage | 5 | ||
| Maximum device surface temperature in tripped state | 125 | ℃ | tripped state | 5 |
CAD (KiCad official)
- Symbol:
SMD1812-260-12 - 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:
smd1812-260-12-etched.step/smd1812-260-12-etched.glbcarry the MPN laser-etched on the die in a toggleableAdom.LaserEtchgroup (Fusion-ready);smd1812-260-12.step/smd1812-260-12.glbare the bare package body.
Provenance
Data extracted from the manufacturer datasheet, not a distributor listing:
- Datasheet: hongjiacheng datasheet (6 pp, sha256
8ab1f213bc6d6cd2, 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).