component
mSMD300-16V
Public Made by Adomby adom
TECHFUSE 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
markdownmSMD300-16V
TECHFUSE · Resettable Fuses · 1812
mSMD300-16V from TECHFUSE, 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 | TECHFUSE |
| 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 | Vmax | 16 | Vdc | at rated current (Imax) | 2 | ||
| Maximum fault current | Imax | 100 | A | at rated voltage (Vmax) | 2 | ||
| Trip current | Itrip | 5 | A | 25°C still air; minimum current at which device always trips | 2 | ||
| Maximum device resistance one hour post reflow | R1max | 0.04 | Ω | 25°C; measured one hour post reflow | 2 | ||
| Minimum device resistance prior to tripping | Rimin | 0.012 | Ω | 25°C | 2 | ||
| Hold current | Ihold | 3 | A | 25°C still air; maximum current device will not trip | 2 | ||
| Resistance change, passive aging | -5 | 5 | % | +85°C, 1000 hrs; printed as typical | 2 | ||
| Resistance change, humidity aging | -5 | 5 | % | +85°C, 85% R.H., 168 hours; printed as typical | 2 | ||
| Resistance change, thermal shock | -33 | 33 | % | +85°C to -40°C, 20 times; printed as typical | 2 | ||
| Ambient operating temperature | -40 | 85 | °C | Ambient operating conditions | 2 | ||
| Maximum surface temperature in tripped state | 125 | °C | device in the tripped state | 2 | |||
| Storage temperature | 40 | °C | Storage conditions | 4 | |||
| Storage relative humidity | 70 | % R.H. | Storage conditions | 4 |
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 | Termination Pad Characteristics Terminal pad materials： Tin-plated Nickel-Copper Terminal pad solderability： Meets EIA specification RS186-9E and ANSI/J-STD-002 Category 3. Rework | 3 |
CAD (KiCad official)
- Symbol:
mSMD300-16V - Footprint:
Fuse:Fuse_1812_4532Metric - 3D model: 1812 (KiCad packages3D, STEP)
- 3D model files:
msmd300-16v-etched.step/msmd300-16v-etched.glbcarry the MPN laser-etched on the die in a toggleableAdom.LaserEtchgroup (Fusion-ready);msmd300-16v.step/msmd300-16v.glbare the bare package body.
Provenance
Data extracted from the manufacturer datasheet, not a distributor listing:
- Datasheet: TECHFUSE datasheet (4 pp, sha256
959ac37f9ddaf29c, retrieved 2026-10-20, 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).