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SMD1812-350C-16V
Public Made by Adomby adom
BNstar Resettable Fuses, 1812. 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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README
markdownSMD1812-350C-16V
BNstar · Resettable Fuses · 1812
SMD1812-350C-16V from BNstar, 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 | One of two non-polarized terminals of the resettable PTC; rated 3.5 A hold, 7.0 A trip at 25℃, Vmax 16.0 V, Imax 100 A. |
| 2 | 2 | passive | Second non-polarized terminal of the resettable PTC; Rmin 0.008 Ω and R1max 0.035 Ω at 25℃. |
Key specifications
| Parameter | Value |
|---|---|
| Manufacturer | BNstar |
| 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 |
|---|---|---|---|---|---|---|---|
| Minimum resistance (initial, un-soldered) | Rmin | 0.008 | Ω | initial (un-soldered) state | 1 | ||
| Trip current | IT | 7 | A | 25℃ still air | 1 | ||
| Hold current | IH | 3.5 | A | 25℃ still air | 1 | ||
| Time to trip | Ttrip | 4 | s | at 10.0 A | 1 | ||
| Maximum continuous voltage (rated voltage) | Vmax | 16 | V | at rated current | 1 | ||
| Maximum fault current | Imax | 100 | A | at rated voltage | 1 | ||
| Maximum resistance after reflow | R1max | 0.035 | Ω | 25℃, measured one hour after reflow soldering of 260℃ for 20 sec | 1 | ||
| Recommended storage temperature | 40 | °C | 70% R.H. max | 2 | |||
| Reflow soldering temperature | 260 | ℃ | reflow soldering for 20 sec | 2 | |||
| Maximum ambient operating temperature range | -40 | 85 | ℃ | 2 | |||
| Typical power dissipation | Pdtyp | 2 | W | still air environment | 1 | ||
| Hold current at ambient temperature | IH | 4.84 | A | ambient -40℃ | 2 | ||
| Hold current at ambient temperature | IH | 4.39 | A | ambient -20℃ | 2 | ||
| Hold current at ambient temperature | IH | 4.04 | A | ambient 0℃ | 2 | ||
| Hold current at ambient temperature | IH | 3.5 | A | ambient 25℃ | 2 | ||
| Hold current at ambient temperature | IH | 2.98 | A | ambient 40℃ | 2 | ||
| Hold current at ambient temperature | IH | 2.66 | A | ambient 50℃ | 2 | ||
| Hold current at ambient temperature | IH | 2.35 | A | ambient 60℃ | 2 | ||
| Hold current at ambient temperature | IH | 1.88 | A | ambient 70℃ | 2 | ||
| Hold current at ambient temperature | IH | 1.55 | A | ambient 85℃ | 2 |
CAD (KiCad official)
- Symbol:
SMD1812-350C-16V - 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:
smd1812-350c-16v-etched.step/smd1812-350c-16v-etched.glbcarry the MPN laser-etched on the die in a toggleableAdom.LaserEtchgroup (Fusion-ready);smd1812-350c-16v.step/smd1812-350c-16v.glbare the bare package body.
Provenance
Data extracted from the manufacturer datasheet, not a distributor listing:
- Datasheet: BNstar datasheet (3 pp, sha256
90d104b3e39b0ae2, retrieved 2026-10-19, 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).