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0459004.UR Surface mount fuse rated 4A at 125V AC/DC with fast blow response. Features 50A AC/300A DC interrupting rating and compact 2-SMD J-Lead package.
Mfr Part #:

0459004.UR

Available from 3 distributors
Mfr Name: Littelfuse Inc.
Littelfuse Inc.
Surface mount fuse rated 4A at 125V AC/DC with fast blow response. Features 50A AC/300A DC interrupting rating and compact 2-SMD J-Lead package.
Total Stock: 1,970 pcs

0459004.UR Available from 3 distributors

Authorised
Non-Authorised
Distributor Stock Pricing MOQ PKG Lead Time Date Code On Order Quantity On Order Delivery
Non-Authorised Inventory information
1,000 pcs
1000 pcs On Request 1 On Request On Request On Request On Request On Request
Non-Authorised Inventory information
700 pcs
700 pcs On Request 1 On Request On Request On Request On Request On Request
Non-Authorised Inventory information
270 pcs
270 pcs On Request 1 On Request On Request N/A On Request On Request

0459004.UR Specifications Quick View

Most important parameters for selection – full specs in datasheet.
Category
Manufacturer Name
Approval Agency
Breaking Capacity
Breaking Capacity @ Rated Voltage
Cold Resistance
Current Rating
Current Rating (Amps)
Fuse Type
Height
Lead Style
Length
Melting I²t
Mounting Type
Operating Temperature
Packaging Type
Response Time
Standard Package Quantity
Termination Material
Termination Style
Voltage Rating
Width

0459004.UR Description

Short technical summary and product information.

The Littelfuse 0459004.UR is a 4A, 125V fast-acting surface mount fuse from the 459 Series PICO SMF family. It offers a breaking capacity of 50A AC and 300A DC, with a nominal cold resistance of 0.0197 ohms and melting I²t of 2.35 A²sec. Designed for overcurrent protection in space-constrained applications, this fuse operates over a wide temperature range of -55°C to 125°C. The 2-SMD J-Lead package measures 7.24mm x 4.32mm x 3.05mm and is supplied in tape and reel packaging with 500 pieces per reel. Terminations are tin-plated copper for reliable solderability. The fuse is RoHS compliant and carries CSA and UL agency approvals.

0459004.UR Quick Information

Product Type: Surface Mount Fuse
Series: 459 Series
Canonical Name: Littelfuse 0459004.UR PICO SMF 4A 125V Fast-Acting Surface Mount Fuse
Subcategory: Board Mount Fuse

0459004.UR Compliance

RoHS Status: RoHS Compliant
Moisture Sensitivity Level (MSL): 1 (Unlimited)
REACH Status: REACH Unaffected

0459004.UR Features

  • Fast-acting response time for sensitive circuits.
  • Rated for 4A at 125V AC/DC operation.
  • 50A AC and 300A DC interrupting capacity.
  • Compact 2-SMD J-Lead surface mount package.
  • RoHS compliant with CSA and UL approvals.

0459004.UR Applications

  • Used in wireless base station power protection.
  • Ideal for network equipment overcurrent protection.
  • Suitable for telecom infrastructure applications.
  • Protects sensitive electronics in industrial control systems.

0459004.UR FAQs

7 frequently asked questions generated from this part’s specifications.
What is the current rating of the 0459004.UR fuse?

The current rating is 4A.

What is the voltage rating?

The voltage rating is 125V AC/DC.

What is the breaking capacity?

The breaking capacity is 50A AC and 300A DC.

What is the response time of this fuse?

It is a fast blow (fast-acting) fuse.

What package is the 0459004.UR available in?

It comes in a 2-SMD, J-Lead package.

What is the operating temperature range?

The operating temperature range is -55°C to 125°C.

Is the 0459004.UR RoHS compliant?

Yes, it is RoHS3 compliant.

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