451/453

Surface Mount Fuse

The 451/453 is a surface mount fuse from Littelfuse Inc.. View the full 451/453 datasheet below including electrical characteristics.

Manufacturer

Littelfuse Inc.

Overview

Part: 451/453 Series Fuse — Littelfuse

Type: Very Fast-Acting Surface Mount Fuse

Description: A very small, Wire-in-Air (WIA) square shape surface mount fuse designed for secondary side circuit over-current protection applications, offering a wide current rating from 0.062A to 20A and very fast-acting performance.

Operating Conditions:

Supply voltage: Up to 125V (AC/DC)
Operating temperature: -55 to 125 °C
Current rating range: 0.062A to 20A

Absolute Maximum Ratings:

Max voltage rating: 125V
Max continuous current: 20A
Max operating temperature: 125 °C

Key Specs:

Ampere Rating range: 0.062A to 20A
Max Voltage Rating: 125V (for 0.062A-10A), 65V (for 12A-20A)
Interrupting Rating: 50A @125VAC/VDC (for 0.062A-10A), 150A @65VDC (for 12A-20A)
Opening Time (100% of Ampere Rating): 4 hours, Minimum
Opening Time (200% of Ampere Rating, 0.062-10A): 5 sec., Maximum
Nominal Cold Resistance: 0.00244 Ω to 5.5000 Ω
Nominal Melting I²t: 0.00019 A²sec to 154 A²sec
Moisture Sensitivity Level: Level 1, J-STD-020

Features:

Very fast-acting
Small size
Wide range of current rating available (0.062A to 20A)
Wide operating temperature range
RoHS compliant and Halogen Free
Low temperature rerating

Applications:

Notebook PC
LCD/PDP TV
LCD monitor
LCD/PDP panel
LCD backlight inverter
Portable DVD player
Power supply
Networking
PC server
Cooling fan system
Storage system
Telecom system
Wireless basestation
White goods
Game console
Office Automation equipment
Battery charging circuit protection
Industrial equipment

Package:

Surface mount, square shape
Available in 12mm Tape and Reel packaging

Features

Very fast-acting
Small size
Wide range of current rating available ( 0.062A to 20A)
Wide operating temperature range

Applications

Notebook PC
LCD/PDP TV
LCD monitor
LCD/PDP panel
LCD backlight inverter
Portable DVD player
Power supply
Networking
PC server
Cooling fan system
Low temperature rerating
RoHS compliant and Halogen Free
Storage system
Telecom system
Wireless basestation
White goods
Game console
Office Automation equipment
Battery charging circuit protection
Industrial equipment

Electrical Characteristics

%ofAmpere Rating	Ampere Rating	OpeningTime
100%	0.062 - 20	4 hours, Minimum
200%	0.062 - 10	5 sec., Maximum
200%	12 - 20	20 sec., Maximum

Related Variants

The following components are covered by the same datasheet.

Part Number	Manufacturer	Package
0451008.MRL	Littelfuse Inc.	2-SMD, Square End Block

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