component
0458004.DR
Public Made by Adomby adom
Littelfuse Disposable 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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README
markdown0458004.DR
Littelfuse · Disposable Fuses · 1206
0458004.DR 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 | Fuse terminal (gold-plated brass end cap, pad 1.185 mm wide per recommended pad layout); the 4 A rating has 0.032 ohm nominal cold resistance, 75 V max and 50A @ 75VDC interrupting rating. |
| 2 | 2 | passive | Second fuse terminal (gold-plated brass end cap, non-polarized and interchangeable with the other terminal); opens in 5 seconds maximum at 250% of rated current. |
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 |
|---|---|---|---|---|---|---|---|
| Nominal cold resistance | 0.032 | Ohms | 4 A rating (004.); cold resistance measured at less than 10% of rated current at 25°C | 1 | |||
| Nominal melting I2t | I2t | 4.832 | A2sec | 4 A rating; I2t stated for 8 msec opening time | 1 | ||
| Max voltage rating | 75 | V | 75V group in table (rows 1.0 to 6.3 A); see review_required | 1 | |||
| Interrupting rating (DC) | 50 | A | @ 75 VDC | 1 | |||
| Interrupting rating (AC) | 50 | A | @ 32 VAC | 1 | |||
| Opening time at 100% of ampere rating | 4 | hours | 100% of ampere rating | 1 | |||
| Opening time at 250% of ampere rating | 5 | seconds | 250% of ampere rating | 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) | TP | 260 | °C | Pb-free reflow profile; do not exceed 260°C | 2 |
CAD (KiCad official)
- Symbol:
0458004.DR - Footprint:
Fuse:Fuse_1206_3216Metric - 3D model: 1206 (KiCad packages3D, STEP)
- 3D model files:
0458004-dr-etched.step/0458004-dr-etched.glbcarry the MPN laser-etched on the die in a toggleableAdom.LaserEtchgroup (Fusion-ready);0458004-dr.step/0458004-dr.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 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).