component

mSMD300-16V

Public Made by Adom

by 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.

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mSMD300-16V

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.glb carry the MPN laser-etched on the die in a toggleable Adom.LaserEtch group (Fusion-ready); msmd300-16v.step / msmd300-16v.glb are 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, primary two-terminal convention (convention), consensus off (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).

Datasheet PDF