component
MSMD050
Public Made by Adomby adom
KUU 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.
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MSMD050
KUU · Resettable Fuses · 1812
MSMD050 from KUU, 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 | KUU |
| 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 |
|---|---|---|---|---|---|---|---|
| Holding current | IH | 0.5 | A | 25℃ still air | 1 | ||
| Tripping current | IT | 1 | A | 25℃ still air | 1 | ||
| Maximum voltage | Vmax | 60 | V | at rated current | 1 | ||
| Maximum fault current | Imax | 100 | A | at rated voltage | 1 | ||
| Maximum time to trip | Ttrip | 0.15 | s | at 8.0 A | 1 | ||
| Minimum resistance prior to trip | Rmin | 0.15 | Ω | 25℃ | 1 | ||
| Maximum resistance one hour post reflow | R1max | 1 | Ω | measured one hour post reflow at 25℃ | 1 | ||
| Rated working power | Pd | 0.8 | W | 1 | |||
| Maximum reflow peak temperature | 260 | ℃ | solder reflow profile | 1 | |||
| Average ramp-up rate | 3 | ℃/s | average ramp-up, reflow profile | 1 | |||
| Ramp-down rate | 6 | ℃/s | ramp-down, reflow profile | 1 | |||
| Ambient operating temperature | -40 | 85 | ℃ | maximum ambient operating temperature range from derating table | 1 |
CAD (KiCad official)
- Symbol:
MSMD050 - 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:
msmd050-etched.step/msmd050-etched.glbcarry the MPN laser-etched on the die in a toggleableAdom.LaserEtchgroup (Fusion-ready);msmd050.step/msmd050.glbare the bare package body.
Provenance
Data extracted from the manufacturer datasheet, not a distributor listing:
- Datasheet: KUU datasheet (1 pp, sha256
f3c79f4784150739, 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).
# MSMD050
**KUU** · Resettable Fuses · 1812
MSMD050 from KUU, 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 | KUU |
| 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 |
|---|---|---|---|---|---|---|---|
| Holding current | IH | | | 0.5 | A | 25℃ still air | 1 |
| Tripping current | IT | 1 | | | A | 25℃ still air | 1 |
| Maximum voltage | Vmax | | | 60 | V | at rated current | 1 |
| Maximum fault current | Imax | | | 100 | A | at rated voltage | 1 |
| Maximum time to trip | Ttrip | | | 0.15 | s | at 8.0 A | 1 |
| Minimum resistance prior to trip | Rmin | 0.15 | | | Ω | 25℃ | 1 |
| Maximum resistance one hour post reflow | R1max | | | 1 | Ω | measured one hour post reflow at 25℃ | 1 |
| Rated working power | Pd | | 0.8 | | W | | 1 |
| Maximum reflow peak temperature | | | | 260 | ℃ | solder reflow profile | 1 |
| Average ramp-up rate | | | | 3 | ℃/s | average ramp-up, reflow profile | 1 |
| Ramp-down rate | | | | 6 | ℃/s | ramp-down, reflow profile | 1 |
| Ambient operating temperature | | -40 | | 85 | ℃ | maximum ambient operating temperature range from derating table | 1 |
## CAD (KiCad official)
- Symbol: `MSMD050`
- 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: `msmd050-etched.step` / `msmd050-etched.glb` carry the MPN laser-etched on the die in a toggleable `Adom.LaserEtch` group (Fusion-ready); `msmd050.step` / `msmd050.glb` are the bare package body.
## Provenance
Data extracted from the manufacturer datasheet, not a distributor listing:
- **Datasheet:** [KUU datasheet](https://jlcpcb.com/api/file/downloadByFileSystemAccessId/8603003614457704448) (1 pp, sha256 `f3c79f4784150739`, retrieved 2026-10-15, tier: lcsc)
- **Extractor:** parts-factory `2.0.0` / `extract_pins`, primary `two-terminal convention` (convention), consensus `off` (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/msmd050-datasheet.pdf)