component
JK-SMD-0805-400L-12
Public Made by Adomby adom
Jinrui Electronic Materials Co Resettable Fuses, 0805. Pinout cross-checked by two models against the datasheet, 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
markdownJK-SMD-0805-400L-12
Jinrui Electronic Materials Co · Resettable Fuses · 0805
JK-SMD-0805-400L-12 from Jinrui Electronic Materials Co, in a 0805. 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 | First terminal of the non-polarized PPTC (tin-plated nickel-copper); device holds 4.0 A (IH) and trips at 8.0 A (IT) at 25°C, VMAX 12 V, IMAX 50 A. |
| 2 | 2 | passive | Second terminal of the non-polarized PPTC, interchangeable with pin 1; recommended solder pad is 1.0 mm (F) wide, 1.5 mm (H) high, 1.2 mm (G) spacing. |
Key specifications
| Parameter | Value |
|---|---|
| Manufacturer | Jinrui Electronic Materials Co |
| Package | 0805 |
| 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 voltage (VMAX), JK-SMD0805-400L-12 | VMAX | 12 | V | Maximum continuous voltage device can withstand without damage at rated current | 3 | ||
| Maximum fault current (IMAX), JK-SMD0805-400L-12 | IMAX | 50 | A | Maximum fault current device can withstand without damage at rated voltage | 3 | ||
| Minimum device resistance at 25℃ prior to tripping (RiMIN) | RiMIN | 0.003 | Ω | In still air at 25℃ | 3 | ||
| Maximum device resistance one hour post reflow (R1MAX) | R1MAX | 0.015 | Ω | Measured one hour post reflow | 3 | ||
| Maximum time to trip at specified current | 2 | s | At 20.0 A time-to-trip current; test at VMAX, 25℃ | 3 | |||
| Hold current (IH) | IH | 4 | A | Maximum current that does not trip in 25℃ still air; 30 min at IH, 25℃, no trip | 3 | ||
| Trip current (IT) | IT | 8 | A | Minimum current that trips device from low to high resistance in 25℃ still air | 3 | ||
| Typical power dissipation (PD) | PD | 0.8 | W | Typical, 25℃ still air | 3 | ||
| Operating temperature | -40 | 85 | ℃ | 1 | |||
| Storage maximum ambient temperature | 40 | ℃ | Storage | 7 | |||
| Storage maximum relative humidity | 70 | % | Storage | 7 |
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 Materials Tin-Plated Nickle-copper | 4 |
CAD (KiCad official)
- Symbol:
JK-SMD-0805-400L-12 - Footprint:
Fuse:Fuse_0805_2012Metric - 3D model: 0805 (KiCad packages3D, STEP)
- 3D model files:
jk-smd-0805-400l-12-etched.step/jk-smd-0805-400l-12-etched.glbcarry the MPN laser-etched on the die in a toggleableAdom.LaserEtchgroup (Fusion-ready);jk-smd-0805-400l-12.step/jk-smd-0805-400l-12.glbare the bare package body.
Provenance
Data extracted from the manufacturer datasheet, not a distributor listing:
- Datasheet: Jinrui Electronic Materials Co datasheet (8 pp, sha256
d39da45649722a68, 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).