component
JK-nSMD075SF
Public Made by Adomby adom
Shenzhen Jinkaisheng Elec Resettable Fuses, 1206. 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.
Contents
README
markdownJK-nSMD075SF
Shenzhen Jinkaisheng Elec · Resettable Fuses · 1206
JK-nSMD075SF from Shenzhen Jinkaisheng Elec, in a 1206. 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 Jinkaisheng Elec |
| Package | 1206 |
| 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) | V max | 6 | V dc | at rated current (I max) | 1 | ||
| Maximum fault current | I max | 100 | A | at rated voltage (V max) | 1 | ||
| Hold current | I hold | 0.75 | A | 25°C still air | 1 | ||
| Trip current | I trip | 1.5 | A | 25°C still air | 1 | ||
| Power dissipation in tripped state | Pd | 0.6 | W | tripped state, 25°C still air, at rated voltage | 1 | ||
| Minimum device resistance prior to tripping | Ri min | 0.09 | Ω | 25°C | 1 | ||
| Maximum device resistance one hour post reflow | R1max | 0.5 | Ω | measured one hour post reflow | 1 | ||
| Time to trip | 0.2 | s | at 8.00 A | 1 | |||
| Resistance change, passive aging | -5 | 5 | % | +85°C, 1000 hrs; typical | 1 | ||
| Resistance change, humidity aging | -5 | 5 | % | +85°C, 85% R.H., 168 hours; typical | 1 | ||
| Resistance change, thermal shock | -33 | 33 | % | +85°C to -40°C, 20 times; typical | 1 | ||
| Ambient operating temperature | -40 | 85 | °C | 1 | |||
| Maximum surface temperature in tripped state | 125 | °C | device in tripped state | 1 | |||
| Recommended hold current at ambient -40°C (derating) | 1.14 | A | ambient -40°C | 2 | |||
| Recommended hold current at ambient 85°C (derating) | 0.41 | A | ambient 85°C | 2 |
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 | 4 |
CAD (KiCad official)
- Symbol:
JK-nSMD075SF - Footprint:
Fuse:Fuse_1206_3216Metric - 3D model: 1206 (KiCad packages3D, STEP)
- 3D model files:
jk-nsmd075sf-etched.step/jk-nsmd075sf-etched.glbcarry the MPN laser-etched on the die in a toggleableAdom.LaserEtchgroup (Fusion-ready);jk-nsmd075sf.step/jk-nsmd075sf.glbare the bare package body.
Provenance
Data extracted from the manufacturer datasheet, not a distributor listing:
- Datasheet: Shenzhen Jinkaisheng Elec datasheet (6 pp, sha256
cffac96ad3619f6f, 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).