component
045803.5DR
Public Made by Adomby adom
Littelfuse Disposable Fuses, 1206. 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
markdown045803.5DR
Littelfuse · Disposable Fuses · 1206
045803.5DR from Littelfuse, 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 | Terminal 1 of an unpolarised fuse; either orientation. |
| 2 | 2 | passive | Terminal 2 of an unpolarised fuse; either orientation. |
Key specifications
| Parameter | Value |
|---|---|
| Manufacturer | Littelfuse |
| 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 |
|---|---|---|---|---|---|---|---|
| Opening time at 100% of rated current | 4 | hours | 100% of ampere rating; opening time minimum | 1 | |||
| Opening time at 250% of rated current | 5 | seconds | 250% of ampere rating; opening time maximum | 1 | |||
| Interrupting rating | 50 | A | @ 75VDC | 1 | |||
| Max voltage rating | 75 | V | Max voltage rating printed for the 1.0 to 3.5 A block | 1 | |||
| Insulation resistance (after opening) | 10000 | Ohms | After opening; MIL-STD-202, Method 302, Test Condition A | 3 | |||
| Operating temperature | -55 | 125 | °C | With proper derating | 3 | ||
| Peak reflow temperature (TP) | 260 | °C | Pb-free reflow; do not exceed 260°C | 2 | |||
| Ramp-up rate (TS(max) to TL) | 5 | °C/second | Pb-free reflow, maximum | 2 | |||
| Ramp-down rate | 5 | °C/second | Pb-free reflow, maximum | 2 | |||
| Time 25°C to peak temperature | 8 | minutes | Time from 25°C to peak temperature (TP), maximum | 2 | |||
| Nominal cold resistance | 0.0375 | Ohms | Nominal; measured at less than 10% of rated current at 25°C (Note 2); 3.5 A row | 1 | |||
| Nominal melting I2t | 4 | A2sec | 8 msec opening time (Note 1); 3.5 A row | 1 | |||
| Ampere rating | 3.5 | A | Amp code 03.5 (this MPN, 045803.5DR) | 1 |
CAD (KiCad official)
- Symbol:
045803.5DR - Footprint:
Fuse:Fuse_1206_3216Metric - 3D model: 1206 (KiCad packages3D, STEP)
- 3D model files:
045803-5dr-etched.step/045803-5dr-etched.glbcarry the MPN laser-etched on the die in a toggleableAdom.LaserEtchgroup (Fusion-ready);045803-5dr.step/045803-5dr.glbare the bare package body.
Provenance
Data extracted from the manufacturer datasheet, not a distributor listing:
- Datasheet: Littelfuse datasheet (3 pp, sha256
4e4a9ebaffcd9cc5, retrieved 2026-10-18, 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).