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0454012.MR Surface mount fuse rated 12A at 72VAC/60VDC with slow blow response time. 50A interrupting capacity in a compact 2-SMD package.
Mfr Part #:

0454012.MR

Available from 1 distributors
Mfr Name: Littelfuse Inc.
Littelfuse Inc.
Surface mount fuse rated 12A at 72VAC/60VDC with slow blow response time. 50A interrupting capacity in a compact 2-SMD package.
Total Stock: 46 pcs

0454012.MR 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
46 pcs
46 pcs On Request 1 On Request On Request 2026-02-25 06:16:38 On Request On Request

0454012.MR Specifications Quick View

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

0454012.MR Description

Short technical summary and product information.

The 0454012.MR is a surface mount fuse from Littelfuse, part of the 452/454 NANO2 Slo-Blo series. It is rated for 12A continuous current at 72VAC and 60VDC, with a breaking capacity of 50A. The slow blow (time delay) characteristic allows it to withstand inrush currents without nuisance opening, making it suitable for applications with capacitive or inductive loads. The fuse is housed in a 2-SMD, square end block package measuring 6.10mm x 2.69mm x 2.69mm. It operates over a temperature range of -55°C to 125°C. The melting I²t is 260.46 A²s. The fuse is RoHS compliant and halogen free, with approvals from CSA and UL. It is designed for use in notebook PCs, LCD displays, power supplies, networking equipment, and other electronic systems requiring reliable overcurrent protection.

0454012.MR Quick Information

Product Type: Surface Mount Fuse
Series: 452/454 Series
Canonical Name: Littelfuse 0454012.MR — 12A 72V Slo-Blo Surface Mount Fuse
Subcategory: Slo-Blo Fuse

0454012.MR Compliance

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

0454012.MR Features

  • Rated for 12A continuous current.
  • Slow blow time delay response.
  • Surface mount 2-SMD package.
  • 50A interrupting capacity.
  • CSA and UL approved.

0454012.MR Applications

  • Used in notebook PC power circuits.
  • Protects LCD display power supplies.
  • Suitable for networking equipment.
  • Ideal for battery charging circuits.
  • Used in industrial control systems.

0454012.MR FAQs

7 frequently asked questions generated from this part’s specifications.
What is the current rating of the 0454012.MR?

12 A

What is the voltage rating?

72 VAC / 60 VDC

What is the breaking capacity?

50 A at rated voltage

What is the response time?

Slow Blow (time delay)

What is the package type?

2-SMD, Square End Block

What is the melting I²t?

260.46 A²s

What is the operating temperature range?

-55°C to 125°C

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