component
ASMD1812-400
Public Made by Adomby adom
Shenzhen JDT Fuse 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
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Symbol & Footprint
Schematic Symbol
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PCB Footprint
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Datasheet
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Contents
README
markdownASMD1812-400
Shenzhen JDT Fuse · Resettable Fuses · 1812
ASMD1812-400 from Shenzhen JDT Fuse, 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 | Shenzhen JDT Fuse |
| 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 |
|---|---|---|---|---|---|---|---|
| Maximum operating voltage (rated voltage) | Vmax | 6 | V | At rated current (Imax) | 3 | ||
| Maximum fault current | Imax | 100 | A | At rated voltage (Vmax) | 3 | ||
| Minimum trip current | Itrip | 7 | A | 25°C still air | 3 | ||
| Hold current | Ihold | 4 | A | 25°C still air; device will not trip | 3 | ||
| Minimum resistance prior to tripping | Ri min | 0.005 | Ω | 25°C | 3 | ||
| Maximum resistance one hour post reflow | R1max | 0.025 | Ω | Measured one hour post reflow | 3 | ||
| Passive aging resistance change | -5 | 5 | % | +85°C, 1000 hrs; typical | 4 | ||
| Humidity aging resistance change | -5 | 5 | % | +85°C, 85% R.H., 168 hours; typical | 4 | ||
| Thermal shock resistance change | -33 | 33 | % | +85°C to -40°C, 20 times; typical | 4 | ||
| Ambient operating temperature | -40 | 85 | °C | Ambient operating conditions | 4 | ||
| Maximum surface temperature in tripped state | 125 | °C | Device in tripped state | 4 | |||
| Storage temperature | 40 | °C | Storage conditions; 70% R.H. max | 5 | |||
| Peak reflow temperature (Pb-free) | Tp | 260 | °C | Pb-free reflow profile | 5 |
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 pad materials：Tin-plated Nickel-Copper | 6 |
CAD (KiCad official)
- Symbol:
ASMD1812-400 - 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:
asmd1812-400-etched.step/asmd1812-400-etched.glbcarry the MPN laser-etched on the die in a toggleableAdom.LaserEtchgroup (Fusion-ready);asmd1812-400.step/asmd1812-400.glbare the bare package body.
Provenance
Data extracted from the manufacturer datasheet, not a distributor listing:
- Datasheet: Shenzhen JDT Fuse datasheet (9 pp, sha256
f28603377fefb600, retrieved 2026-10-18, 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).