044803.5MR Surface mount fuse from Littelfuse, rated 3.5A at 125VAC/VDC with 50A breaking capacity. It features a fast-blow response and is housed in a 2-SMD square end block package.
Mfr Part #:

044803.5MR

Available from 1 distributors
Mfr Name: Littelfuse Inc.
Littelfuse Inc.
Surface mount fuse from Littelfuse, rated 3.5A at 125VAC/VDC with 50A breaking capacity. It features a fast-blow response and is housed in a 2-SMD square end block package.
Total Stock: 1,000 pcs
$ Price Range: $0.89 - $2.15

044803.5MR Available from 1 distributor

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 24+ On Request On Request

044803.5MR Specifications Quick View

Most important parameters for selection – full specs in datasheet.
Category
Manufacturer Name
AEC Qualified
Approval Agency
Automotive Grade
Breaking Capacity @ Rated Voltage
Current Rating (Amps)
Fuse Type
Halogen Free
Height
Industrial Grade
Length
Medical Grade
Melting I²t
Military Grade
Mounting Type
Operating Temperature
Response Time
Tape & Reel
Voltage Rating
Width

044803.5MR Description

Short technical summary and product information.

The Littelfuse 044803.5MR is a surface mount fuse designed for overcurrent protection in a variety of electronic circuits. It is rated for a continuous current of 3.5A and can withstand up to 125VAC or VDC, making it suitable for both AC and DC applications. The fuse offers a breaking capacity of 50A at the rated voltage, ensuring reliable interruption of fault currents. The fast-blow response time provides rapid protection against short circuits and overcurrent conditions.

 

The fuse is housed in a compact 2-SMD square end block package with dimensions of 6.10mm x 2.69mm x 2.69mm, allowing for space-efficient board-level mounting. It operates over a wide temperature range of -55°C to 125°C, suitable for harsh environments. The device is approved by CSA, UL, and PSE, confirming its compliance with international safety standards.

 

This fuse is ideal for use in power supplies, industrial controls, and automotive electronics where reliable overcurrent protection is required. Its surface mount design facilitates automated assembly and reduces manufacturing costs.

044803.5MR Quick Information

Series: 448
Subcategory: Surface Mount Fuse

044803.5MR Compliance

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

044803.5MR Estimated Pricing

Qty Low High
1+ $2.15 $2.15
5+ $1.96 $1.96
10+ $1.86 $1.86
50+ $1.50 $1.50
100+ $1.27 $1.27
250+ $1.24 $1.24
500+ $1.05 $1.05
1,000+ $0.89 $0.89

Estimated market price range - modelled values for guidance only, not live distributor offers.

044803.5MR Features

  • Rated 3.5A at 125VAC/VDC.
  • Breaking capacity of 50A at rated voltage.
  • Fast-blow response time.
  • Surface mount in 2-SMD package.
  • Operating temperature range -55°C to 125°C.

044803.5MR Applications

  • Used in circuit protection for power supplies.
  • Ideal for board-level overcurrent protection.
  • Suitable for automotive and industrial electronics.
  • Applicable in telecom and networking equipment.

044803.5MR FAQs

7 frequently asked questions generated from this part’s specifications.
What is the current rating of the Littelfuse 044803.5MR?

3.5A.

What is the voltage rating of this fuse?

125VAC/VDC.

What is the breaking capacity of the 044803.5MR?

50A at the rated voltage.

What is the response time of this fuse?

Listed as 'Fast Blow' in the database, but the datasheet indicates 'Very Fast-Acting'. This discrepancy should be resolved with the manufacturer.

What is the operating temperature range?

-55°C to 125°C.

What package type does the 044803.5MR come in?

2-SMD, Square End Block.

What safety approvals does this fuse have?

CSA, UL, and PSE.

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