component
BSMD1812-250-8V
Public Made by Adomby adom
BHFUSE 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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README
markdownBSMD1812-250-8V
BHFUSE · Resettable Fuses · 1812
BSMD1812-250-8V from BHFUSE, 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 | BHFUSE |
| 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 |
|---|---|---|---|---|---|---|---|
| Trip current (minimum current at which device trips, 25°C still air) | Itrip | 5 | A | 25°C still air | 2 | ||
| Minimum resistance (initial, un-soldered state) | Rmin | 0.015 | Ω | initial un-soldered state | 2 | ||
| Hold current (maximum current passed without tripping) | Ihold | 2.5 | A | 25°C still air | 2 | ||
| Maximum resistance R1max | R1max | 0.09 | Ω | 25°C, measured one hour after tripping or reflow soldering at 260°C for 20 sec | 2 | ||
| Maximum voltage (rated voltage, withstand without damage) | Vmax | 8 | Vdc | at rated current (Imax) | 2 | ||
| Maximum fault current (withstand without damage) | Imax | 40 | A | at rated voltage (Vmax) | 2 | ||
| Ambient operating temperature | -40 | 85 | °C | ambient operating conditions, series-wide statement | 5 | ||
| Resistance change, passive aging | -5 | 5 | % | +85°C, 1000 hours (typical) | 5 | ||
| Resistance change, humidity aging | -5 | 5 | % | +85°C, 85% R.H., 168 hours (typical) | 5 | ||
| Resistance change, thermal shock | -33 | 33 | % | +85°C to -40°C, 20 times (typical) | 5 | ||
| Maximum surface temperature in tripped state | 125 | °C | device in tripped state | 5 | |||
| Power dissipated in tripped state (typical) | Pd | 1 | W | tripped state, 25°C still air | 2 | ||
| Time to trip | Time to trip | 2.5 | Sec | at 8.00 A | 2 |
CAD (KiCad official)
- Symbol:
BSMD1812-250-8V - 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:
bsmd1812-250-8v-etched.step/bsmd1812-250-8v-etched.glbcarry the MPN laser-etched on the die in a toggleableAdom.LaserEtchgroup (Fusion-ready);bsmd1812-250-8v.step/bsmd1812-250-8v.glbare the bare package body.
Provenance
Data extracted from the manufacturer datasheet, not a distributor listing:
- Datasheet: BHFUSE datasheet (10 pp, sha256
a7f7e8936d26d547, 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).