component
SF-0603S300-2
Public Made by Adomby adom
BOURNS Disposable Fuses, 0603. 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
markdownSF-0603S300-2
BOURNS · Disposable Fuses · 0603
SF-0603S300-2 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 | First end-cap terminal of the 3.00 A slow-blow fuse (rated 32 VDC, 0.016 Ω typ.), non-polarized and interchangeable with the other terminal. |
| 2 | 2 | passive | Second end-cap terminal of the 3.00 A slow-blow fuse (rated 32 VDC, 0.016 Ω typ.), non-polarized and interchangeable with the other terminal. |
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 |
|---|---|---|---|---|---|---|---|
| Clearing time at 250 % of rated current (max) | 5 | seconds | 250 % of rated current, 25 °C ambient | 1 | |||
| Clearing time at 100 % of rated current (min) | 4 | hours | 100 % of rated current, 25 °C ambient | 1 | |||
| Resistance tolerance | R | -25 | 25 | % | Resistance measured with ≤10 % rated current at 25 °C ambient | 1 | |
| Resistance (typical, cold) | R | 0.016 | Ω | Measured with ≤10 % rated current at 25 °C ambient | 1 | ||
| Rated current | 3 | A | Model SF-0603S300-2 | 1 | |||
| Rated voltage (DC) | 32 | VDC | Model SF-0603S300-2 (32 VDC rated group) | 1 | |||
| Interrupting rating | 50 | A | @ 32 VDC | 1 | |||
| Typical melting I2t | I2t | 0.21 | A2s | Melting I2t calculated at 10 times rated current | 1 | ||
| Operating temperature | -20 | 105 | °C | 2 | |||
| Storage temperature | 5 | 35 | °C | Storage conditions | 2 | ||
| Storage humidity | 40 | 75 | % | Storage conditions | 2 | ||
| Shelf life | 2 | years | From manufacturing date | 2 | |||
| Temperature rise | 75 | °C | 100 % of rated current, surface temperature | 4 | |||
| Resistance change after solder heat | ΔR | -20 | 20 | % | 260 °C ±5 °C, 10 seconds ±1 second | 4 | |
| Resistance change after dry heat | ΔR | -20 | 20 | % | 105 °C ±5 °C, 1000 hours | 4 | |
| Resistance change after thermal shock | ΔR | 10 | % | -20 °C / +25 °C / +125 °C / +25 °C, 10 cycles | 4 | ||
| Residual resistance after fusing | R | 10 | k ohms | Measure DC resistance after fusing | 4 | ||
| Fusing time at 250 % rated current | 5 | seconds | 250 % of rated current | 4 | |||
| Solderability coverage | 95 | % coverage | 235 °C ±5 °C or 245 °C ±5 °C (lead free), 2 ±0.5 seconds | 4 | |||
| Reflow peak temperature | 245 | 250 | °C | Peak, 5 seconds (+0/-5 °C) | 4 | ||
| Reflow preheating temperature | 150 | 180 | °C | Pre-heating zone, 90 ± 30 seconds | 4 | ||
| Reflow soldering zone temperature | 230 | °C | Soldering zone, 30 ± 10 seconds | 4 |
CAD (KiCad official)
- Symbol:
SF-0603S300-2 - Footprint:
Fuse:Fuse_0603_1608Metric - 3D model: 0603 (KiCad packages3D, STEP)
- 3D model files:
sf-0603s300-2-etched.step/sf-0603s300-2-etched.glbcarry the MPN laser-etched on the die in a toggleableAdom.LaserEtchgroup (Fusion-ready);sf-0603s300-2.step/sf-0603s300-2.glbare the bare package body.
Provenance
Data extracted from the manufacturer datasheet, not a distributor listing:
- Datasheet: BOURNS datasheet (5 pp, sha256
afc4c96bfbc20b5b, 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).