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SMD1812P010TF
Public Made by Adomby adom
RUILON Shenzhen Ruilongyuan Elec 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
markdownSMD1812P010TF
RUILON Shenzhen Ruilongyuan Elec · Resettable Fuses · 1812
SMD1812P010TF from RUILON Shenzhen Ruilongyuan Elec, 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 resettable PTC fuse (Ihold 0.1 A, Itrip 0.3 A, Vmax 30 VDC, Imax 0.5 A), a 4.37-4.73 mm x 3.07-3.41 mm body soldered to a 1.78 mm pad. |
| 2 | 2 | passive | The other terminal of the non-polarized resettable PTC fuse (Ihold 0.1 A, Itrip 0.3 A, Vmax 30 VDC, Imax 0.5 A), interchangeable with the first terminal. |
Key specifications
| Parameter | Value |
|---|---|
| Manufacturer | RUILON Shenzhen Ruilongyuan Elec |
| 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 |
|---|---|---|---|---|---|---|---|
| Itrip, minimum current at which device always trips (25°C still air) | Itrip | 0.3 | A | 25°C still air | 2 | ||
| Vmax, maximum operating voltage | Vmax | 30 | VDC | At rated current Imax | 2 | ||
| Imax, maximum fault current withstood | Imax | 30 | A | At rated voltage Vmax | 2 | ||
| Rimin, minimum device resistance prior to tripping | Rimin | 0.75 | Ω | 25°C | 3 | ||
| Tmax, maximum time to trip | Tmax | 1.5 | S | Max. time-to-trip current 0.5 A | 2 | ||
| Ihold, hold current (no trip) at 25°C still air | Ihold | 0.1 | A | 25°C still air | 2 | ||
| Pd, power dissipation in tripped state | Pd | 0.8 | W | 25°C still air, at rated voltage | 3 | ||
| Thermal derating Ih at ambient -40 ºC | Ih | 0.16 | A | Thermal derating chart, ambient -40 ºC | 3 | ||
| Thermal derating Ih at ambient -20 ºC | Ih | 0.14 | A | Thermal derating chart, ambient -20 ºC | 3 | ||
| Thermal derating Ih at ambient 0 ºC | Ih | 0.12 | A | Thermal derating chart, ambient 0 ºC | 3 | ||
| Thermal derating Ih at ambient 25 ºC | Ih | 0.1 | A | Thermal derating chart, ambient 25 ºC | 3 | ||
| Thermal derating Ih at ambient 40 ºC | Ih | 0.08 | A | Thermal derating chart, ambient 40 ºC | 3 | ||
| Thermal derating Ih at ambient 50 ºC | Ih | 0.07 | A | Thermal derating chart, ambient 50 ºC | 3 | ||
| Thermal derating Ih at ambient 60 ºC | Ih | 0.06 | A | Thermal derating chart, ambient 60 ºC | 3 | ||
| Thermal derating Ih at ambient 70 ºC | Ih | 0.05 | A | Thermal derating chart, ambient 70 ºC | 3 | ||
| Thermal derating Ih at ambient 85 ºC | Ih | 0.03 | A | Thermal derating chart, ambient 85 ºC | 3 | ||
| Resistance change, passive aging | -5 | 5 | % | +85℃, 1000 hrs; printed as ±5% typical | 1 | ||
| Resistance change, humidity aging | -5 | 5 | % | +85℃, 85%R.H., 168 hours; printed as ±5% typical | 1 | ||
| Resistance change, thermal shock | -33 | 33 | % | +85℃ to -40℃, 20 times; printed as ±33% typical | 1 | ||
| Ambient operating temperature | -40 | 85 | °C | Ambient operating conditions | 1 | ||
| Maximum surface temperature in tripped state | 125 | °C | Device in tripped state | 1 |
CAD (KiCad official)
- Symbol:
SMD1812P010TF - 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:
smd1812p010tf-etched.step/smd1812p010tf-etched.glbcarry the MPN laser-etched on the die in a toggleableAdom.LaserEtchgroup (Fusion-ready);smd1812p010tf.step/smd1812p010tf.glbare the bare package body.
Provenance
Data extracted from the manufacturer datasheet, not a distributor listing:
- Datasheet: RUILON Shenzhen Ruilongyuan Elec datasheet (8 pp, sha256
17f9c523d0f567cd, 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).