0469005.WR LITTELFUSE Fuse (Fuses Chip) In Stock
Littelfuse 0469005.WR is a 5A slow-blow surface-mount fuse in 1206 chip package (3.27mm × 1.63mm × 0.9mm) with a 5J nominal joule integral for surge-tolerant overcurrent protection. It provides reliable circuit protection in motor, transformer, and power supply applications where inrush currents must be tolerated. Available on tape-and-reel with worldwide distribution.
- Manufacturer
- LITTELFUSE
- Package
- Fuses Chip
- Pin Count
- 2
- Lifecycle
- OBSOLETE
- Datasheet
- 0469005.WR Datasheet PDF
- Category
- Fuse
- Temp Range
- -55.0°C to 150.0°C
- RoHS
- Compliant
- Lead Time
- 3–7 business days
- Shipping
- DHL Express · Worldwide
Key Features
- 5A slow-blow characteristic with 5J joule integral tolerating high inrush currents without nuisance tripping in motor and transformer circuits
- Compact 1206 SMD chip fuse (3.27mm × 1.63mm) enabling surface-mount automated assembly in space-constrained power protection designs
- Tape-and-reel (TR) packaging for high-volume pick-and-place SMT production lines
- Rated for electric fuse circuit protection applications covering AC/DC power supply and industrial equipment overcurrent scenarios
Applications
The 0469005.WR is used in power supply boards, battery management systems, and motor drive circuits where slow-blow protection at 5A is needed to ride through startup inrush without nuisance trips. Its 1206 SMT footprint integrates easily into compact power distribution boards in consumer electronics, industrial equipment, and telecommunications power converters. The 5J joule integral specification ensures the fuse survives the high but brief surge currents typical of transformer primaries and capacitive load charging cycles.
Specifications
| YTEOL | 0 |
| Blow Characteristic | SLOW |
| Body Breadth | 1.63mm |
| Body Height | 0.9mm |
| Body Length or Diameter | 3.27mm |
| Circuit Protection Type | ELECTRIC FUSE |
| Fuse Size | 1206 |
| Joule Integral-Nom | 5J |
| Mounting Feature | SURFACE MOUNT |
| Packing Method | TR |
| Rated Breaking Capacity | 60A |
| Rated Current | 5A |
| Rated Voltage(DC) | 32V |
| Reference Standard | CSA; CUL; UL |
| Surface Mount | YES |
| Terminal Shape | WRAPAROUND |
| Trip Time or Delay | 0.002s |
| Package | Fuses Chip |
Compliance & Regulatory
| RoHS Status | Compliant |
| Lead-Free | Yes (Pb-Free) |
| ECCN | EAR99 |
| HTS Code | 8536.10.00.40 |
Alternate & Equivalent Parts
Compatible alternatives and drop-in replacements for 0469005.WR:
suggested
suggested
suggested
Frequently Asked Questions
Why does the 0469005.WR use a slow-blow characteristic rather than a fast-blow fuse for power supply protection?
The 0469005.WR is rated slow-blow with a 5J joule integral, allowing it to survive brief overcurrent surges such as the 10× rated inrush that occurs when a 5A transformer or motor starts. A fast-blow fuse at 5A would open during normal startup, causing nuisance trips. The slow-blow characteristic holds for the short inrush duration while still opening within seconds on a sustained overload above the 5A rating.
What are the physical dimensions of the 0469005.WR 1206 chip fuse and how do they affect PCB layout?
The 0469005.WR body measures 3.27mm long × 1.63mm wide × 0.9mm tall, consistent with a standard 1206 SMT package (3.2mm × 1.6mm IPC nominal). Its 1206 footprint is widely available in PCB CAD libraries and requires standard 1206 paste stencil apertures. The 0.9mm height fits under low-clearance covers and shields without the need for a special keep-out area.
How does the 5J joule integral specification of 0469005.WR help engineers size fuse protection for capacitive loads?
The 5J joule integral (I²t) defines the maximum energy the 0469005.WR can absorb before opening. For a capacitive in-rush event where a 1000µF capacitor charges from 0V to 100V through a series resistance, the energy deposited in the fuse is approximately 0.5×C×V² = 5J, matching the fuse limit. Engineers use this value to verify the fuse will clear on a sustained fault but survive the capacitor charge transient without premature opening.
Is 0469005.WR available in tape-and-reel packaging and what production quantities are typical?
Yes, the WR suffix indicates 0469005.WR is packaged on tape-and-reel (TR) for automated SMT assembly. Typical reel quantities for 1206 chip fuses are 1000 or 4000 pieces per reel, depending on the distributor. The tape-and-reel format enables continuous-feed pick-and-place loading, reducing changeover downtime on high-volume power board assembly lines where fuse placement is a standard step.
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