Datasheet > 04492.50MR

04492.50MR

更新时间： 2023-02-26 15:47:49

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力特 - LITTELFUSE		/
页数	文件大小	规格书
3页	154K
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Electric Fuse

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04492.50MR 数据手册

Surface Mount Fuses

NANO^2®> Slo-Blo^®> 449 Series

449 Series Fuse

Description

The lead free NANO²Slo-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 NANO²Fast-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.

Features

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Agency Approvals

Free

temperature range

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AGENCY

AGENCY FILE NUMBER

E10480

AMPERE RANGE

375mA - 5A

de-rating

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ratings available

NBK030205

1A - 5A

Applications

Secondary protection for space constrained applications:

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Electrical Characteristics for Series

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% of Ampere

OpeningTime

4 hours, Minimum

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Rating

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100%

equipment

200%

300%

800%

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

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

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

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protection

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Electrical Speciﬁcations by Item

Max

Agency Approvals

Ampere

Rating

(A)

Nominal Cold

Resistance

(Ohms)

Nominal

Melting

Voltage

Interrupting

Rating

Amp Code

Rating

(V)

I²t (A²sec)

0.375

0.500

0.750

1.00

.375

.500

.750

001.

01.5

125

1.5130

0.7633

0.4080

0.2516

0.1186

0.0708

0.0400

0.0352

0.0261

0.0227

0.0171

0.088

0.258

0.847

1.76

50 amperes @125 VAC/

VDC

1.50

4.70

2.00

2.50

3.00

3.50

4.00

5.00

002.

02.5

003.

03.5

004.

005.

6.76

PSE: 100 amperes

@100 VAC

13.18

19.55

32.70

40.80

59.59

Notes: - l²t calculated at 8ms. Resistance is measured at 10% of rated current, 25ºC

449 Series

Speciﬁcations are subject to change without notice.

Please refer to www.littelfuse.com/series/449.html for current information.

Revised: June 3, 2012

12 3

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