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JK-nSMD150SF
Public Made by Adomby adom
Shenzhen Jinkaisheng Elec Resettable Fuses, 1206. 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-nSMD150SF
Shenzhen Jinkaisheng Elec · Resettable Fuses · 1206
JK-nSMD150SF 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 | First terminal of the non-polarized resettable PTC fuse (tin-plated nickel-copper pad); rated Vmax 8.0 Vdc, Ihold 1.50 A, Itrip 3.00 A, Imax 100 A. |
| 2 | 2 | passive | Second terminal of the non-polarized resettable PTC fuse (tin-plated nickel-copper pad); interchangeable with pin 1, series element rated Ihold 1.50 A at 25°C. |
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 (Vmax) | Vmax | 15 | V dc | At rated current (Imax) | 1 | ||
| Maximum fault current (Imax) | Imax | 100 | A | At rated voltage (Vmax) | 1 | ||
| Hold current | I hold | 1.5 | A | 25°C still air; device will not trip | 1 | ||
| Trip current | I trip | 3 | A | 25°C still air; device will always trip | 1 | ||
| Minimum device resistance prior to tripping | Ri min | 0.04 | Ω | 25°C, prior to tripping | 1 | ||
| Maximum device resistance one hour post reflow | R1max | 0.13 | Ω | One hour post reflow | 1 | ||
| Resistance change, passive aging | -5 | 5 | % | +85°C, 1000 hrs | 1 | ||
| Resistance change, humidity aging | -5 | 5 | % | +85°C, 85% R.H., 168 hours | 1 | ||
| Resistance change, thermal shock | -33 | 33 | % | +85°C to -40°C, 20 times | 1 | ||
| Ambient operating temperature | -40 | 85 | °C | 1 | |||
| Maximum surface temperature in tripped state | 125 | °C | Device in tripped state | 1 | |||
| Storage temperature | 0 | 35 | ℃ | Storage, ≤70% RH | 3 | ||
| Average ramp-up rate (Ts max to Tp) | 3 | ℃/second | Pb-free reflow profile | 3 | |||
| Ramp-down rate | 6 | ℃/second | Pb-free reflow profile | 3 | |||
| Time 25℃ to peak temperature | 8 | minutes | 25℃ to peak temperature | 3 | |||
| Peak temperature (Tp) | Tp | 260 | ℃ | Pb-free assembly reflow | 3 | ||
| Power dissipation in tripped state (Pd) | Pd | 0.8 | W | Tripped state, 25°C still air, rated voltage | 1 | ||
| Time to trip | 8 | Sec | 1 | ||||
| Recommended hold current at ambient -40°C | 2.18 | A | Ambient -40°C | 2 | |||
| Recommended hold current at ambient -20°C | 1.94 | A | Ambient -20°C | 2 | |||
| Recommended hold current at ambient 0°C | 1.72 | A | Ambient 0°C | 2 | |||
| Recommended hold current at ambient 25°C | 1.5 | A | Ambient 25°C | 2 | |||
| Recommended hold current at ambient 40°C | 1.28 | A | Ambient 40°C | 2 | |||
| Recommended hold current at ambient 50°C | 1.17 | A | Ambient 50°C | 2 | |||
| Recommended hold current at ambient 60°C | 1.06 | A | Ambient 60°C | 2 | |||
| Recommended hold current at ambient 70°C | 0.96 | A | Ambient 70°C | 2 | |||
| Recommended hold current at ambient 85°C | 0.77 | 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-nSMD150SF - Footprint:
Fuse:Fuse_1206_3216Metric - 3D model: 1206 (KiCad packages3D, STEP)
- 3D model files:
jk-nsmd150sf-etched.step/jk-nsmd150sf-etched.glbcarry the MPN laser-etched on the die in a toggleableAdom.LaserEtchgroup (Fusion-ready);jk-nsmd150sf.step/jk-nsmd150sf.glbare the bare package body.
Provenance
Data extracted from the manufacturer datasheet, not a distributor listing:
- Datasheet: Shenzhen Jinkaisheng Elec datasheet (6 pp, sha256
a8f3820f2e67a914, retrieved 2026-10-18, 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).