component
SMD1206-125
Public Made by Adomby adom
BORN 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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Contents
README
markdownSMD1206-125
BORN · Resettable Fuses · 1206
SMD1206-125 from BORN, 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 PPTC resettable fuse; the datasheet shows two tin-plated end terminals, I-hold 1.25 A and I-trip 2.50 A at 25°C (SMD1206-125/6N and /8N, Vmax 6 V and 8 Vdc). |
| 2 | 2 | passive | Second terminal of the non-polarized PPTC resettable fuse, interchangeable with the other terminal, with Imax 100 A and R1max 0.16 Ohm. |
Key specifications
| Parameter | Value |
|---|---|
| Manufacturer | BORN |
| 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 |
|---|---|---|---|---|---|---|---|
| I-trip (tripping current) | I-trip | 2.5 | A | 25℃ still air; minimum current at which device trips | 1 | ||
| I-hold (holding current) | I-hold | 1.25 | A | 25℃ still air; maximum current at which device does not trip | 1 | ||
| Imax (maximum fault current) | Imax | 100 | A | At rated voltage Vmax | 1 | ||
| R0 min (initial resistance, minimum) | R0 min | 0.035 | Ohm | Initial (un-soldered) state, 25℃ | 1 | ||
| R1 max (resistance after trip or reflow, maximum) | R1 max | 0.16 | Ohm | 25℃, one hour after tripping or 260℃ reflow for 20 s | 1 | ||
| Max. time to trip | 0.5 | s | At specified current 8.00 A, 25℃ | 1 | |||
| Pd (power dissipated in tripped state) | Pd | 0.8 | W | Tripped state, 25℃ still air | 1 | ||
| Operating temperature | -40 | 85 | °C | 2 | |||
| Maximum device surface temperature in tripped state | 125 | °C | Tripped state | 2 | |||
| Passive aging resistance change | -5 | 5 | % | +85℃, 1000 hours; typical resistance change | 2 | ||
| Humidity aging resistance change | -5 | 5 | % | +85℃, 85% R.H., 1000 hours; typical resistance change | 2 | ||
| Thermal shock resistance change | -30 | % | MIL-STD-202 Method 107, +85℃ to -40℃, 20 times; typical resistance change | 2 | |||
| Recommended hold current at ambient | 1.83 | A | Ambient -40℃ (thermal derating chart) | 3 | |||
| Recommended hold current at ambient | 1.25 | A | Ambient 25℃ (thermal derating chart) | 3 | |||
| Recommended hold current at ambient | 0.6 | A | Ambient 85℃ (thermal derating chart) | 3 | |||
| Peak / classification reflow temperature (TP) | TP | 260 | °C | Pb-free reflow; printed as 260 +0/-5 °C | 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 | Terminal Material Tin-Plated Nickle-Copper (Solder Material: | 6 |
CAD (KiCad official)
- Symbol:
SMD1206-125 - Footprint:
Fuse:Fuse_1206_3216Metric - 3D model: 1206 (KiCad packages3D, STEP)
- 3D model files:
smd1206-125-etched.step/smd1206-125-etched.glbcarry the MPN laser-etched on the die in a toggleableAdom.LaserEtchgroup (Fusion-ready);smd1206-125.step/smd1206-125.glbare the bare package body.
Provenance
Data extracted from the manufacturer datasheet, not a distributor listing:
- Datasheet: BORN datasheet (7 pp, sha256
cc4500a53a54ed1e, retrieved 2026-10-17, 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).