Littelfuse 449 Series Manual do Utilizador descarregar pdf

Speciﬁcations are subject to change without notice.

Revised: 01/23/14

Surface Mount Fuses

NANO

2®

> Slo-Blo

> 449 Series

449 Series Fuse

Description

The lead free NANO

Slo-Blo

fuse is RoHS compliant,

Halogen Free and 100% lead-free. This product is fully

compatible with lead-free solder alloys and higher

temperature proﬁles associated with lead-free assembly.

The Slo-Blo

design has enhanced inrush withstand

characteristics over the NANO

Fast-Acting Fuse. The unique

time delay feature of this fuse design helps solve the

problem of nuisance “opening” by accommodating inrush

currents that normally cause a fast-acting fuse to open.

Agency Approvals

AGENCY AGENCY FILE NUMBER AMPERE RANGE

E10480 375mA - 5A

NBK030205 1A - 5A

Electrical Characteristics for Series

Features

% of Ampere

Rating

Opening Time

100% 4 hours, Minimum

200% 1 sec., Min.; 60 sec., Max.

300% 0.2 sec., Min.; 3 sec., Max

800% 0.02 sec., Min.; 0.1 sec., Max.

Electrical Speciﬁcations by Item

Ampere

Rating

(A)

Amp Code

Max

Voltage

Rating

(V)

Interrupting

Rating

Nominal Cold

Resistance

(Ohms)

Nominal

Melting

t (A

sec)

Agency Approvals

0.375 .375 125

50 amperes @125 VAC/

VDC

PSE: 100 amperes

@100 VAC

1.5130 0.088 x

0.500 .500 125 0.7633 0.258

0.750 .750 125 0.4080 0.847

1. 0 0 0 01. 125 0.2516 1. 76

1.50 01. 5 125 0.1186 4.70

2.00 002. 125 0.0708 6.76

2.50 02.5 125 0.0400 13.18

3.00 003. 125 0.0352 19.55

3.50 03.5 125 0.0261 32.70

4.00 004. 125 0.0227 40.80

5.00 005. 125 0.0171 59.59 x x

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

• OfceAutomation

equipment

• Batterychargingcircuit

protection

• Industrialequipment

• Medicalequipment

•Automotive

Secondary protection for space constrained applications:

• Lead-freeandHalogen

Free

• Slo-Blo

• Smallsize

• Widerangeofcurrent

ratings available

• Wideoperating

temperature range

• Lowtemperature

de-rating

Notes: - l

t calculated at 8ms. Resistance is measured at 10% of rated current, 25ºC

Additional Information

Datasheet

Samples

Resources

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