component
FTR1812-020
Public Made by Adomby adom
FTR Resettable Fuses, 1812. Pinout cross-checked by two models against the datasheet, KiCad symbol/footprint/3D.
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FTR1812-020
FTR · Resettable Fuses · 1812
FTR1812-020 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 | Non-polarized PTC terminal (solder-plated copper); device holds 0.20 A (Ihold), trips at 0.40 A (Itrip), Vmax 30 V, Imax 100 A. |
| 2 | 2 | passive | Non-polarized PTC terminal (solder-plated copper); interchangeable with the other terminal, recommended pad 1.78 mm wide with 3.45 mm typ. pad spacing. |
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) | Ihold | 0.2 | A | 23℃ still air | 1 | ||
| Trip current (Itrip) | Itrip | 0.4 | A | 23℃ still air | 1 | ||
| Maximum voltage (Vmax) | Vmax | 30 | V | at rated current (Imax) | 1 | ||
| Maximum fault current (Imax) | Imax | 100 | A | at rated voltage (Vmax) | 1 | ||
| Maximum time to trip | 0.02 | s | fault current 8.00 A | 1 | |||
| Minimum resistance in initial (un-soldered) state | Rmin | 0.8 | Ω | initial (un-soldered) state | 1 | ||
| Maximum resistance at 23℃ after tripping or reflow | R1max | 5 | Ω | 23℃, one hour after tripping or reflow soldering of 260℃ for 20 sec | 1 | ||
| Typical power dissipated in tripped state (Pd typ.) | Pd | 0.8 | W | tripped state at 23℃ still air | 1 | ||
| Hold current derating at ambient -40℃ | Ihold | 0.29 | A | ambient operation temperature -40℃ | 2 | ||
| Hold current derating at ambient -20℃ | Ihold | 0.26 | A | ambient operation temperature -20℃ | 2 | ||
| Hold current derating at ambient 0℃ | Ihold | 0.23 | A | ambient operation temperature 0℃ | 2 | ||
| Hold current derating at ambient 23℃ | Ihold | 0.2 | A | ambient operation temperature 23℃ | 2 | ||
| Hold current derating at ambient 40℃ | Ihold | 0.17 | A | ambient operation temperature 40℃ | 2 | ||
| Hold current derating at ambient 50℃ | Ihold | 0.15 | A | ambient operation temperature 50℃ | 2 | ||
| Hold current derating at ambient 60℃ | Ihold | 0.14 | A | ambient operation temperature 60℃ | 2 | ||
| Hold current derating at ambient 70℃ | Ihold | 0.12 | A | ambient operation temperature 70℃ | 2 | ||
| Hold current derating at ambient 85℃ | Ihold | 0.1 | A | ambient operation temperature 85℃ | 2 | ||
| Operating / storage temperature | -40 | 85 | ℃ | operating / storage | 5 | ||
| Maximum device surface temperature in tripped state | 125 | ℃ | tripped state | 5 | |||
| Resistance change, passive aging | ΔR/R | -50 | 50 | % | +85℃, 1000 hours; typical | 5 | |
| Resistance change, humidity aging | ΔR/R | -50 | 50 | % | +85℃, 85%RH, 1000 hours; typical | 5 | |
| Resistance change, thermal shock | ΔR/R | -50 | % | MIL-STD-202 Method 107G, +85℃/-40℃ 20 times; typical | 5 | ||
| Peak reflow temperature (TP) | TP | 260 | ℃ | Pb-free reflow profile | 4 | ||
| Time within 5℃ of peak temperature (tP) | tP | 20 | 40 | s | within 5℃ of actual peak temperature, Pb-free reflow | 4 | |
| Time maintained above liquidus (TL) | tL | 60 | 150 | s | above TL = 217℃, Pb-free reflow | 4 | |
| Storage condition (packaging) | 0 | 35 | ℃ | ≤70%RH | 4 |
Materials and finish
As the datasheet states them (page.json metadata.appearance; the 3D model's colours follow it).
| Part | Material | Colour / plating | Datasheet says | Page |
|---|---|---|---|---|
| contacts | Copper | tin | Terminal Material Solder-Plated Copper (Solder Material: Matte Tin (Sn)) | 5 |
CAD (KiCad official)
- Symbol:
FTR1812-020 - 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:
ftr1812-020-etched.step/ftr1812-020-etched.glbcarry the MPN laser-etched on the die in a toggleableAdom.LaserEtchgroup (Fusion-ready);ftr1812-020.step/ftr1812-020.glbare the bare package body.
Provenance
Data extracted from the manufacturer datasheet, not a distributor listing:
- Datasheet: FTR datasheet (6 pp, sha256
901196765d349b7b, retrieved 2026-10-17, 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).
# FTR1812-020
**FTR** · Resettable Fuses · 1812
FTR1812-020 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 | Non-polarized PTC terminal (solder-plated copper); device holds 0.20 A (Ihold), trips at 0.40 A (Itrip), Vmax 30 V, Imax 100 A. |
| 2 | 2 | passive | Non-polarized PTC terminal (solder-plated copper); interchangeable with the other terminal, recommended pad 1.78 mm wide with 3.45 mm typ. pad spacing. |
## 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) | Ihold | | | 0.2 | A | 23℃ still air | 1 |
| Trip current (Itrip) | Itrip | 0.4 | | | A | 23℃ still air | 1 |
| Maximum voltage (Vmax) | Vmax | | | 30 | V | at rated current (Imax) | 1 |
| Maximum fault current (Imax) | Imax | | | 100 | A | at rated voltage (Vmax) | 1 |
| Maximum time to trip | | | | 0.02 | s | fault current 8.00 A | 1 |
| Minimum resistance in initial (un-soldered) state | Rmin | 0.8 | | | Ω | initial (un-soldered) state | 1 |
| Maximum resistance at 23℃ after tripping or reflow | R1max | | | 5 | Ω | 23℃, one hour after tripping or reflow soldering of 260℃ for 20 sec | 1 |
| Typical power dissipated in tripped state (Pd typ.) | Pd | | 0.8 | | W | tripped state at 23℃ still air | 1 |
| Hold current derating at ambient -40℃ | Ihold | | | 0.29 | A | ambient operation temperature -40℃ | 2 |
| Hold current derating at ambient -20℃ | Ihold | | | 0.26 | A | ambient operation temperature -20℃ | 2 |
| Hold current derating at ambient 0℃ | Ihold | | | 0.23 | A | ambient operation temperature 0℃ | 2 |
| Hold current derating at ambient 23℃ | Ihold | | | 0.2 | A | ambient operation temperature 23℃ | 2 |
| Hold current derating at ambient 40℃ | Ihold | | | 0.17 | A | ambient operation temperature 40℃ | 2 |
| Hold current derating at ambient 50℃ | Ihold | | | 0.15 | A | ambient operation temperature 50℃ | 2 |
| Hold current derating at ambient 60℃ | Ihold | | | 0.14 | A | ambient operation temperature 60℃ | 2 |
| Hold current derating at ambient 70℃ | Ihold | | | 0.12 | A | ambient operation temperature 70℃ | 2 |
| Hold current derating at ambient 85℃ | Ihold | | | 0.1 | A | ambient operation temperature 85℃ | 2 |
| Operating / storage temperature | | -40 | | 85 | ℃ | operating / storage | 5 |
| Maximum device surface temperature in tripped state | | | | 125 | ℃ | tripped state | 5 |
| Resistance change, passive aging | ΔR/R | -50 | | 50 | % | +85℃, 1000 hours; typical | 5 |
| Resistance change, humidity aging | ΔR/R | -50 | | 50 | % | +85℃, 85%RH, 1000 hours; typical | 5 |
| Resistance change, thermal shock | ΔR/R | | -50 | | % | MIL-STD-202 Method 107G, +85℃/-40℃ 20 times; typical | 5 |
| Peak reflow temperature (TP) | TP | | | 260 | ℃ | Pb-free reflow profile | 4 |
| Time within 5℃ of peak temperature (tP) | tP | 20 | | 40 | s | within 5℃ of actual peak temperature, Pb-free reflow | 4 |
| Time maintained above liquidus (TL) | tL | 60 | | 150 | s | above TL = 217℃, Pb-free reflow | 4 |
| Storage condition (packaging) | | 0 | | 35 | ℃ | ≤70%RH | 4 |
## Materials and finish
As the datasheet states them (page.json `metadata.appearance`; the 3D model's colours follow it).
| Part | Material | Colour / plating | Datasheet says | Page |
|---|---|---|---|---|
| contacts | Copper | tin | Terminal Material Solder-Plated Copper (Solder Material: Matte Tin (Sn)) | 5 |
## CAD (KiCad official)
- Symbol: `FTR1812-020`
- 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: `ftr1812-020-etched.step` / `ftr1812-020-etched.glb` carry the MPN laser-etched on the die in a toggleable `Adom.LaserEtch` group (Fusion-ready); `ftr1812-020.step` / `ftr1812-020.glb` are the bare package body.
## Provenance
Data extracted from the manufacturer datasheet, not a distributor listing:
- **Datasheet:** [FTR datasheet](https://jlcpcb.com/api/file/downloadByFileSystemAccessId/8590171138262671360) (6 pp, sha256 `901196765d349b7b`, retrieved 2026-10-17, 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/ftr1812-020-datasheet.pdf)