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SMD1812-200-8
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hongjiacheng Resettable Fuses, 1812. Pinout cross-checked by two models against the datasheet, KiCad symbol/footprint/3D.
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SMD1812-200-8
hongjiacheng · Resettable Fuses · 1812
SMD1812-200-8 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 resettable fuse (Ihold 2.0A, Itrip 4.0A, Vmax 8V, Imax 40A); the device is symmetric and either terminal may be used as pin 1. |
| 2 | 2 | passive | Second terminal of the non-polarized PTC resettable fuse (Ihold 2.0A, Itrip 4.0A, Vmax 8V, Imax 40A); the device is symmetric and either terminal may be used as pin 2. |
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 min | 0.02 | Ω | Initial un-soldered state | 3 | ||
| Maximum resistance at 25℃ after tripping or reflow (R1 max) | R1 max | 0.1 | Ω | 25℃, measured one hour after tripping or reflow soldering at 260℃ for 20 sec | 3 | ||
| Hold current (Ihold) | Ihold | 2 | A | 25℃ still air; maximum current device passes without tripping | 3 | ||
| Trip current (Itrip) | Itrip | 4 | A | 25℃ still air; minimum current at which device trips | 3 | ||
| Maximum voltage (Vmax) | Vmax | 8 | V | Maximum voltage device can withstand without damage at rated current (Imax) | 3 | ||
| Maximum fault current (Imax) | Imax | 40 | A | Maximum fault current device can withstand without damage at rated voltage (Vmax) | 3 | ||
| Maximum time-to-trip | 2 | s | Max. Time-to-trip column (A)(Sec); printed current entry 8.0 A | 3 | |||
| Typical power dissipated in tripped state (Pd typ) | Pd | 1 | W | Tripped state, 25℃ still air | 3 | ||
| Operating / storage temperature | -40 | 85 | ℃ | Operating / storage temperature | 5 | ||
| Maximum device surface temperature in tripped state | 125 | ℃ | Tripped state | 5 | |||
| Peak temperature (TP) for Pb-free reflow | TP | 260 | ℃ | Printed as +260(+0/-5)℃; do not exceed +260℃ | 1 | ||
| Preheat temperature TS(min) to TS(max) | TS | 150 | 200 | ℃ | Pb-free reflow preheat, 60-180 s | 1 | |
| Hold current derating, family row SMD1812-200 at -40℃ ambient | Ihold | 2.88 | A | Ambient -40℃; family row SMD1812-200 (not suffix-specific) | 4 | ||
| Hold current derating, family row SMD1812-200 at 25℃ ambient | Ihold | 2 | A | Ambient 25℃; family row SMD1812-200 (not suffix-specific) | 4 | ||
| Hold current derating, family row SMD1812-200 at 85℃ ambient | Ihold | 0.8 | A | Ambient 85℃; family row SMD1812-200 (not suffix-specific) | 4 |
CAD (KiCad official)
- Symbol:
SMD1812-200-8 - 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:
smd1812-200-8-etched.step/smd1812-200-8-etched.glbcarry the MPN laser-etched on the die in a toggleableAdom.LaserEtchgroup (Fusion-ready);smd1812-200-8.step/smd1812-200-8.glbare the bare package body.
Provenance
Data extracted from the manufacturer datasheet, not a distributor listing:
- Datasheet: hongjiacheng datasheet (6 pp, sha256
8ab1f213bc6d6cd2, retrieved 2026-10-18, 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).
# SMD1812-200-8
**hongjiacheng** · Resettable Fuses · 1812
SMD1812-200-8 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 resettable fuse (Ihold 2.0A, Itrip 4.0A, Vmax 8V, Imax 40A); the device is symmetric and either terminal may be used as pin 1. |
| 2 | 2 | passive | Second terminal of the non-polarized PTC resettable fuse (Ihold 2.0A, Itrip 4.0A, Vmax 8V, Imax 40A); the device is symmetric and either terminal may be used as pin 2. |
## 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 min | 0.02 | | | Ω | Initial un-soldered state | 3 |
| Maximum resistance at 25℃ after tripping or reflow (R1 max) | R1 max | | | 0.1 | Ω | 25℃, measured one hour after tripping or reflow soldering at 260℃ for 20 sec | 3 |
| Hold current (Ihold) | Ihold | | | 2 | A | 25℃ still air; maximum current device passes without tripping | 3 |
| Trip current (Itrip) | Itrip | 4 | | | A | 25℃ still air; minimum current at which device trips | 3 |
| Maximum voltage (Vmax) | Vmax | | | 8 | V | Maximum voltage device can withstand without damage at rated current (Imax) | 3 |
| Maximum fault current (Imax) | Imax | | | 40 | A | Maximum fault current device can withstand without damage at rated voltage (Vmax) | 3 |
| Maximum time-to-trip | | | | 2 | s | Max. Time-to-trip column (A)(Sec); printed current entry 8.0 A | 3 |
| Typical power dissipated in tripped state (Pd typ) | Pd | | 1 | | W | Tripped state, 25℃ still air | 3 |
| Operating / storage temperature | | -40 | | 85 | ℃ | Operating / storage temperature | 5 |
| Maximum device surface temperature in tripped state | | | | 125 | ℃ | Tripped state | 5 |
| Peak temperature (TP) for Pb-free reflow | TP | | | 260 | ℃ | Printed as +260(+0/-5)℃; do not exceed +260℃ | 1 |
| Preheat temperature TS(min) to TS(max) | TS | 150 | | 200 | ℃ | Pb-free reflow preheat, 60-180 s | 1 |
| Hold current derating, family row SMD1812-200 at -40℃ ambient | Ihold | | 2.88 | | A | Ambient -40℃; family row SMD1812-200 (not suffix-specific) | 4 |
| Hold current derating, family row SMD1812-200 at 25℃ ambient | Ihold | | 2 | | A | Ambient 25℃; family row SMD1812-200 (not suffix-specific) | 4 |
| Hold current derating, family row SMD1812-200 at 85℃ ambient | Ihold | | 0.8 | | A | Ambient 85℃; family row SMD1812-200 (not suffix-specific) | 4 |
## CAD (KiCad official)
- Symbol: `SMD1812-200-8`
- 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: `smd1812-200-8-etched.step` / `smd1812-200-8-etched.glb` carry the MPN laser-etched on the die in a toggleable `Adom.LaserEtch` group (Fusion-ready); `smd1812-200-8.step` / `smd1812-200-8.glb` are the bare package body.
## Provenance
Data extracted from the manufacturer datasheet, not a distributor listing:
- **Datasheet:** [hongjiacheng datasheet](docs/smd1812-200-8-datasheet.pdf) (6 pp, sha256 `8ab1f213bc6d6cd2`, retrieved 2026-10-18, tier: lcsc)
- **Extractor:** parts-factory `2.0.0` / `extract_pins 0.3`, primary `claude-sonnet-5-5` (text+vision), consensus `claude-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).
[Datasheet PDF](docs/smd1812-200-8-datasheet.pdf)