component
SF-0603S040-2
Public Made by Adomby adom
BOURNS Disposable Fuses, 0603. 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
markdownSF-0603S040-2
BOURNS · Disposable Fuses · 0603
SF-0603S040-2 from BOURNS, in a 0603. 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 | BOURNS |
| Package | 0603 |
| 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 |
|---|---|---|---|---|---|---|---|
| Resistance | 350 | mΩ | Measured with less than 10 % of rated current (0.40 A rated) | 1 | |||
| Resistance tolerance | -25 | 25 | % | Printed as ±25 % in footnote *** | 1 | ||
| Fusing time | 5 | s | Open within 5 sec. at 250 % rated current | 1 | |||
| Typical I2t | 0.004 | A2 s | Measured at 10x rated current | 1 | |||
| Rated current | 0.4 | A | 1 | ||||
| Rated voltage | 50 | V | DC | 1 | |||
| Breaking capacity | 50 | A | 1 | ||||
| Operating temperature | -20 | 105 | °C | 1 | |||
| Storage temperature | 5 | 35 | °C | Storage conditions | 1 | ||
| Storage humidity | 40 | 75 | % | Storage conditions | 1 | ||
| Temperature rise | 75 | °C | 100 % of rated current, surface temperature | 1 | |||
| Resistance change, resistance to solder heat | -20 | 20 | % | 260 °C ±5 °C, 10 seconds ±1 second | 1 | ||
| Resistance change, resistance to dry heat | -20 | 20 | % | 105 °C ±5 °C, 1000 hours | 1 | ||
| Resistance change, thermal shock (DR) | DR | 10 | % | -20 °C / +25 °C / +125 °C / +25 °C, 10 cycles | 1 | ||
| Residual resistance | 10 | k ohms | Measure DC resistance after fusing | 1 |
CAD (KiCad official)
- Symbol:
SF-0603S040-2 - Footprint:
Fuse:Fuse_0603_1608Metric - 3D model: 0603 (KiCad packages3D, STEP)
- 3D model files:
sf-0603s040-2-etched.step/sf-0603s040-2-etched.glbcarry the MPN laser-etched on the die in a toggleableAdom.LaserEtchgroup (Fusion-ready);sf-0603s040-2.step/sf-0603s040-2.glbare the bare package body.
Provenance
Data extracted from the manufacturer datasheet, not a distributor listing:
- Datasheet: BOURNS datasheet (5 pp, sha256
cf582ee622bd9b27, retrieved 2026-10-21, 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).