component
SMD1812-050-15
Public Made by Adomby adom
hongjiacheng Resettable Fuses, 1812. Pinout cross-checked by two models against the datasheet, KiCad symbol/footprint/3D.
3D Model
Open in new tab ↗
Loads when you scroll to it. Unloads after 5 minutes in the background.
Symbol & Footprint
Schematic Symbol
Open full view ↗Loads when you scroll to it. Unloads after 5 minutes in the background.
PCB Footprint
Open full view ↗Loads when you scroll to it. Unloads after 5 minutes in the background.
Datasheet
Open in new tab ↗Loads when you scroll to it. Unloads after 5 minutes in the background.
README
markdownSMD1812-050-15
hongjiacheng · Resettable Fuses · 1812
SMD1812-050-15 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 of two interchangeable end terminals of the non-polarized PTC; Ihold 0.50 A, Itrip 1.0 A, Vmax 15 V, Imax 40 A. |
| 2 | 2 | passive | Second interchangeable end terminal of the non-polarized PTC; recommended pad 1.7±0.1 mm wide by 3.5±0.1 mm tall, with 3.0±0.1 mm between pads. |
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 |
|---|---|---|---|---|---|---|---|
| Hold current (maximum current without tripping) | Ihold | 0.5 | A | 25°C still air | 2 | ||
| Trip current (minimum current to trip) | Itrip | 1 | A | 25°C still air | 2 | ||
| Maximum voltage | Vmax | 15 | V | at rated current (Imax) | 2 | ||
| Maximum fault current | Imax | 40 | A | at rated voltage (Vmax) | 2 | ||
| Max. time-to-trip | 8 | Sec | 2 | ||||
| Minimum resistance in initial state | Ri | 0.15 | Ω | initial (un-soldered) state | 2 | ||
| Maximum resistance at 25°C after trip or reflow | R1 | 1.4 | Ω | 25°C, measured one hour after tripping or reflow soldering of 260°C for 20 sec | 2 | ||
| Operating / storage temperature | -40 | 85 | °C | operating / storage temperature | 5 | ||
| Maximum device surface temperature in tripped state | 125 | °C | tripped state | 5 | |||
| Typical power dissipated in tripped state | Pd | 0.8 | W | tripped state, 25°C still air | 2 |
CAD (KiCad official)
- Symbol:
SMD1812-050-15 - 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:
smd1812-050-15-etched.step/smd1812-050-15-etched.glbcarry the MPN laser-etched on the die in a toggleableAdom.LaserEtchgroup (Fusion-ready);smd1812-050-15.step/smd1812-050-15.glbare the bare package body.
Provenance
Data extracted from the manufacturer datasheet, not a distributor listing:
- Datasheet: hongjiacheng datasheet (6 pp, sha256
8ab1f213bc6d6cd2, retrieved 2026-10-17, 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).