component
JK-mSMD014-33
Public Made by Adomby adom
Jinrui Electronic Materials Co Resettable Fuses, 1812. Pinout cross-checked by two models against the datasheet, 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-mSMD014-33
Jinrui Electronic Materials Co · Resettable Fuses · 1812
JK-mSMD014-33 from Jinrui Electronic Materials Co, 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 pad of the non-polarized resettable PTC fuse (tin-plated nickel-copper); interchangeable with pad 2, Umax 33.0 Vdc, Ihold 0.14 A and Itrip 0.34 A at 25°C. |
| 2 | 2 | passive | Terminal pad of the non-polarized resettable PTC fuse (tin-plated nickel-copper); interchangeable with pad 1, Umax 33.0 Vdc, Imax 100 A. |
Key specifications
| Parameter | Value |
|---|---|
| Manufacturer | Jinrui Electronic Materials Co |
| 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 (Umax) | Umax | 33 | Vdc | at rated current (Imax), per definition | 3 | ||
| Maximum fault current (Imax) | Imax | 100 | A | at rated voltage (Vmax) | 3 | ||
| Hold current (Ihold) at 25°C | Ihold | 0.14 | A | 25°C still air; maximum current device will not trip | 3 | ||
| Trip current (Itrip) at 25°C | Itrip | 0.34 | A | 25°C still air; minimum current at which device always trips | 3 | ||
| Minimum device resistance prior to tripping (Rimin) | Rimin | 0.65 | Ω | In still air @ 25°C | 3 | ||
| Maximum device resistance one hour post reflow (R1max) | R1max | 6 | Ω | measured one hour post reflow | 3 | ||
| Time to trip | 0.15 | s | at 1.5 A, Vmax, 25°C (specified current per table) | 3 | |||
| Resistance change after passive aging | -10 | 10 | % | 85°C, 1000 hours | 5 | ||
| Resistance change after humidity aging | -5 | 5 | % | 85°C/85%RH, 1000 hours | 5 | ||
| Resistance change after thermal shock | -30 | % | MIL-STD-202 Method 107G, +85°C/-40°C, 20 times; typical value | 5 | |||
| Operating temperature | -40 | 85 | °C | series operating temperature range printed in Features | 1 |
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 Nickle-copper | 1 |
CAD (KiCad official)
- Symbol:
JK-mSMD014-33 - 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:
jk-msmd014-33-etched.step/jk-msmd014-33-etched.glbcarry the MPN laser-etched on the die in a toggleableAdom.LaserEtchgroup (Fusion-ready);jk-msmd014-33.step/jk-msmd014-33.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
8d950f09d4bc30e4, 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).