0278.400V Board mount fuse rated 400mA at 125VAC/VDC. Very fast-acting with 10kA interrupting rating.
Mfr Part #:

0278.400V

Available from 1 distributors
Mfr Name: Littelfuse Inc.
Littelfuse Inc.
Board mount fuse rated 400mA at 125VAC/VDC. Very fast-acting with 10kA interrupting rating.
Total Stock: 50 pcs

0278.400V Available from 1 distributor

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0278.400V 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)
Failure Rate
Fuse Type
Lead Style
Melting I²t
Military Grade
Mounting Type
Operating Temperature
Package / Case
Response Time
Size
Size / Dimension
Tape & Reel
Voltage Rating
Voltage Rating Type

0278.400V Description

Short technical summary and product information.

The Littelfuse 0278.400V is a board mount fuse from the MICRO series, designed for through-hole mounting in a radial can package. It is rated for 400mA at 125VAC/VDC and features a very fast-acting response time. With a breaking capacity of 10kA at rated voltage, it provides reliable overcurrent protection. The fuse has a cold resistance of 0.227 ohms and a melting I²t of 0.0251 A²s. It operates over a temperature range of -55°C to 125°C. This fuse is suitable for applications requiring compact, high-reliability circuit protection, originally developed for the U.S. Space Program. It is available in plug-in or radial lead styles.

0278.400V Quick Information

Product Type: Fuse
Series: 272/273/274/278/279 Series
Canonical Name: Littelfuse 0278.400V MICRO Very Fast-Acting Fuse, 400mA, 125VAC/VDC, Board Mount
Subcategory: Very Fast-Acting Fuse

0278.400V Compliance

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

0278.400V Features

  • Rated 400mA at 125VAC/VDC.
  • Very fast-acting response time.
  • 10kA breaking capacity at rated voltage.
  • Through-hole radial can package.
  • Operating temperature range -55°C to 125°C.

0278.400V Applications

  • Ideal for board-level overcurrent protection.
  • Used in power supply and control circuits.
  • Suitable for high-reliability military and aerospace applications.
  • Compact design for space-constrained PCBs.

0278.400V FAQs

7 frequently asked questions generated from this part’s specifications.
What is the current rating of the 0278.400V fuse?

0.4 A (400 mA).

What is the voltage rating?

125 V AC/DC.

What is the breaking capacity?

10 kA at 125 VAC/VDC.

What is the response time?

Very fast-acting (fast blow).

What is the package type?

Radial, Can, Vertical (through hole).

What is the operating temperature range?

-55°C to 125°C.

What is the cold resistance?

0.227 ohms.

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