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BSMD1206L-550
Public Made by Adomby adom
BHFUSE Resettable Fuses, 1206. 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
markdownBSMD1206L-550
BHFUSE · Resettable Fuses · 1206
BSMD1206L-550 from BHFUSE, in a 1206. 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 terminal of the non-polarized resettable PTC fuse; BSMD1206L-550 is rated Ihold 5.50 A, Itrip 11.0 A, Vmax 6.0 Vdc, Imax 50 A. |
| 2 | 2 | passive | Second terminal of the non-polarized resettable PTC fuse, interchangeable with pin 1; recommended pad is 1.00 mm x 1.80 mm per terminal. |
Key specifications
| Parameter | Value |
|---|---|
| Manufacturer | BHFUSE |
| Package | 1206 |
| 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 |
|---|---|---|---|---|---|---|---|
| Hold current (maximum current without tripping) | Ihold | 5.5 | A | 25℃ still air | 2 | ||
| Trip current (minimum current to trip) | Itrip | 11 | A | 25℃ still air | 2 | ||
| Maximum voltage | Vmax | 6 | Vdc | at rated current (Imax) | 2 | ||
| Maximum fault current | Imax | 50 | A | at rated voltage (Vmax) | 2 | ||
| Minimum resistance (initial, un-soldered) | Rmin | 0.001 | Ω | initial (un-soldered) state | 2 | ||
| Maximum resistance after tripping or reflow | R1max | 0.009 | Ω | 25℃, measured one hour after tripping or reflow soldering at 260℃ for 20 sec | 2 | ||
| Power dissipated in tripped state (typical) | Pd | 1.2 | W | tripped state, 25℃ still air | 2 | ||
| Time to trip (at trip current 27.5 A) | 5 | s | at 27.5 A | 2 | |||
| Ambient operating temperature | -40 | 85 | °C | ambient operating conditions | 3 | ||
| Maximum surface temperature in tripped state | 125 | °C | device in the tripped state | 3 |
CAD (KiCad official)
- Symbol:
BSMD1206L-550 - Footprint:
Fuse:Fuse_1206_3216Metric - 3D model: 1206 (KiCad packages3D, STEP)
- 3D model files:
bsmd1206l-550-etched.step/bsmd1206l-550-etched.glbcarry the MPN laser-etched on the die in a toggleableAdom.LaserEtchgroup (Fusion-ready);bsmd1206l-550.step/bsmd1206l-550.glbare the bare package body.
Provenance
Data extracted from the manufacturer datasheet, not a distributor listing:
- Datasheet: BHFUSE datasheet (7 pp, sha256
786f5f45bdc33acf, 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).