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.
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SF-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).
# SF-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.glb` carry the MPN laser-etched on the die in a toggleable `Adom.LaserEtch` group (Fusion-ready); `sf-0603s040-2.step` / `sf-0603s040-2.glb` are the bare package body.
## Provenance
Data extracted from the manufacturer datasheet, not a distributor listing:
- **Datasheet:** [BOURNS datasheet](https://jlcpcb.com/api/file/downloadByFileSystemAccessId/8588939946178985984) (5 pp, sha256 `cf582ee622bd9b27`, retrieved 2026-10-21, tier: lcsc)
- **Extractor:** parts-factory `2.0.0` / `extract_pins`, primary `two-terminal convention` (convention), consensus `off` (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).
[Datasheet PDF](docs/sf-0603s040-2-datasheet.pdf)