component
FTR1812-050
Public Made by Adomby adom
FTR 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.
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
markdownFTR1812-050
FTR · Resettable Fuses · 1812
FTR1812-050 from FTR, 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 | FTR |
| 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 | Ihold | 0.5 | A | 23℃ still air | 1 | ||
| Trip current | Itrip | 1 | A | 23℃ still air | 1 | ||
| Maximum voltage | Vmax | 15 | V | at rated current (Imax) | 1 | ||
| Maximum fault current | Imax | 100 | A | at rated voltage (Vmax) | 1 | ||
| Maximum time to trip | 0.15 | s | at 8.00 A fault current | 1 | |||
| Minimum initial resistance | Rmin | 0.15 | Ω | initial (un-soldered) state | 1 | ||
| Maximum resistance after trip or reflow | R1max | 1 | Ω | 23℃, measured one hour after tripping or reflow soldering at 260℃ for 20 s | 1 | ||
| Hold current derating at -40℃ | Ihold | 0.77 | A | ambient operating temperature -40℃ | 2 | ||
| Hold current derating at -20℃ | Ihold | 0.68 | A | ambient operating temperature -20℃ | 2 | ||
| Hold current derating at 0℃ | Ihold | 0.59 | A | ambient operating temperature 0℃ | 2 | ||
| Hold current derating at 23℃ | Ihold | 0.5 | A | ambient operating temperature 23℃ | 2 | ||
| Hold current derating at 40℃ | Ihold | 0.44 | A | ambient operating temperature 40℃ | 2 | ||
| Hold current derating at 50℃ | Ihold | 0.4 | A | ambient operating temperature 50℃ | 2 | ||
| Hold current derating at 60℃ | Ihold | 0.37 | A | ambient operating temperature 60℃ | 2 | ||
| Hold current derating at 70℃ | Ihold | 0.33 | A | ambient operating temperature 70℃ | 2 | ||
| Hold current derating at 85℃ | Ihold | 0.29 | A | ambient operating temperature 85℃ | 2 | ||
| Operating temperature | -40 | 85 | ℃ | operating and storage | 5 | ||
| Storage temperature | 0 | 35 | ℃ | storage condition, ≤70%RH | 4 | ||
| Maximum device surface temperature in tripped state | 125 | ℃ | tripped state | 5 | |||
| Reflow peak temperature | TP | 260 | ℃ | Pb-free reflow, time within 5℃ of peak 20-40 s | 4 | ||
| Passive aging resistance change | -50 | 50 | % | +85℃, 1000 hours | 5 | ||
| Humidity aging resistance change | -50 | 50 | % | +85℃, 85%RH, 1000 hours | 5 | ||
| Thermal shock resistance change | -50 | % | MIL-STD-202 Method 107G, +85℃/-40℃, 20 times | 5 | |||
| Power dissipated in tripped state | Pd | 0.8 | W | tripped state at 23℃ still air | 1 |
CAD (KiCad official)
- Symbol:
FTR1812-050 - 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:
ftr1812-050-etched.step/ftr1812-050-etched.glbcarry the MPN laser-etched on the die in a toggleableAdom.LaserEtchgroup (Fusion-ready);ftr1812-050.step/ftr1812-050.glbare the bare package body.
Provenance
Data extracted from the manufacturer datasheet, not a distributor listing:
- Datasheet: FTR datasheet (6 pp, sha256
901196765d349b7b, retrieved 2026-10-15, 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).