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0443003.DR Fuse, board mount, 3A, 250VAC, 2-SMD package, slow blow response time. Surface mount square end block fuse from Littelfuse 443 series.
Mfr Part #:

0443003.DR

Available from 2 distributors
Mfr Name: Littelfuse Inc.
Littelfuse Inc.
Fuse, board mount, 3A, 250VAC, 2-SMD package, slow blow response time. Surface mount square end block fuse from Littelfuse 443 series.
Total Stock: 920 pcs

0443003.DR Available from 2 distributors

Authorised
Non-Authorised
Distributor Stock Pricing MOQ PKG Lead Time Date Code On Order Quantity On Order Delivery
Non-Authorised Inventory information
463 pcs
463 pcs On Request 1 On Request On Request On Request On Request On Request
Non-Authorised Inventory information
457 pcs
457 pcs On Request 1 On Request On Request On Request On Request On Request

0443003.DR 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
Halogen Free
Height
Lead Spacing
Lead Style
Length
Medical Grade
Melting I²t
Military Grade
Mounting Type
Operating Temperature
Response Time
SVHC Present
Storage Temperature
Tape & Reel
Voltage Drop
Voltage Rating
Width

0443003.DR Description

Short technical summary and product information.

The Littelfuse 0443003.DR is a 3A, 250VAC slow blow surface mount fuse from the 443 series. It features a 50A interrupting rating at 250VAC and is designed for board mount applications in a compact 2-SMD square end block package.

 

Electrical characteristics include a nominal cold resistance of 0.028 Ω, a typical voltage drop of 113 mV, and a melting I²t of 51.44 A²s. The fuse operates over -55°C to 125°C and is halogen-free and RoHS compliant.

 

The 443 series Slo-Blo fuses are suitable for applications requiring inrush current tolerance, such as AC/DC power adapters, telecom equipment, and portable system power supplies. The surface mount package is compatible with lead-free soldering processes.

0443003.DR Quick Information

Product Type: Surface Mount Fuse
Series: 443 Series
Canonical Name: Littelfuse 0443003.DR Slo-Blo Surface Mount Fuse, 3A, 250VAC, 50A Breaking Capacity
Subcategory: Board Mount Fuse

0443003.DR Compliance

RoHS Status: RoHS Compliant
Moisture Sensitivity Level (MSL): 1 Unlimited
REACH Status: REACH Unaffected
Lead Free: No

0443003.DR Features

  • Rated 3A at 250VAC.
  • Slow blow response time.
  • 50A interrupting rating at 250VAC.
  • Surface mount 2-SMD package.
  • RoHS compliant and halogen-free.

0443003.DR Applications

  • Used in AC/DC power adapters.
  • Supports telecom equipment power systems.
  • Ideal for portable system built-in power.
  • Protects circuits with high inrush currents.

0443003.DR FAQs

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

3A.

What is the voltage rating?

250VAC.

What is the breaking capacity?

50A at 250VAC.

What is the response time?

Slow blow.

What is the package type?

2-SMD, square end block.

What is the operating temperature range?

-55°C to 125°C.

What approvals does the fuse have?

cULus recognized, also approved to PSE, KTL, CCC, VDE, SEMKO.

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