Littelfuse 279 Series Manual do Utilizador descarregar pdf (Página 1)

Speciﬁcations are subject to change without notice.

Revised: 12/19/13

Radial Lead Fuses

MICRO™ > Very Fast-Acting > 272/273/274/278/279 Series

272/273/274/278/279 Series, MICRO™ Very Fast-Acting Fuse

Description

Developed originally for the U.S. Space Program,

MICRO™ fuse provides reliability in a compact design.

The MICRO™ fuse is available in plug–in or radial lead

styles and a complete range of ampere ratings from

1/500 to 5A to suit a wide variety of design needs.

Agency Approvals

Agency Agency File Number Ampere Range

E10480 2mA - 5A

LR 29862 2mA - 5A

QPL

FM02 2mA - 5A

Features

Electrical Characteristics

Applications

QPL

% of Ampere

Rating

Ampere Rating Opening Time

100% 1/500–5 4 Hours, Min.

200%

1/500–3/10 5 Seconds, Max.

4/10-5 2 Seconds, Max.

Ampere

Rating

(A)

Amp Code

(for all

above

series)

Max

Voltage

Rating

(V)

Interrupting

Rating

Nominal

Cold

Resistance

(Ohms)

Nominal

Melting

t (A

sec)

Agency Approvals

QPL

.002 .002 125

10,000 amperes at

125 VAC/VDC.

2200 0.00000000845

X X X

.005 .005 125 280 0.00000000810

X X X

.010 .010 125 80.0 0.000000462

X X X

.015 .015 125 44.0 0.00000123

X X X

.031 .031 125 16.0 0.00000810

X X X

.050 .050 125 3.20 0.0000666

X X X

.062 .062 125 2.32 0.000115

X X X

.100 .100 125 1.25 0.000385

X X X

.125 .125 125 1. 0 0.000691

X X X

.200 .200 125 2.30 0.00409

X X X

.250 .250 125 1.75 0.00640

X X X

.300 .300 125 1.25 0.00945

X X X

.400 .400 125 0.227 0.0251

X X X

.500 .500 125 0.167 0.0716

X X X

.600 .600 125 0.430 0.0411

X X X

.700 .700 125 0.324 0.0710

X X X

.750 .750 125 0.293 0.0900

X X X

.800 .800 125 0.271 0.113

X X X

1. 0 0 0 01. 125 0.0880 0.0648

X X X

01. 5 01. 5 125 0.0578 0.160

X X X

2.00 002. 125 0.0425 0.300

X X X

3.00 003. 125 0.0275 0.759

X X X

4.00 004. 125 0.0202 1.38

X X X

5.00 005. 125 0.0156 2.21

X X X

Electrical Characteristics

• Military grade available

• High breaking capacity

• Clear cover option to view

fuse element status

• Available from very low

ampere of 2mA to 5A

• Plug-in with short or long

leads option

• Printed circuit boards

and similar equipment

• Electronic components

1 2 3

Radial Lead Fuses 1
0273 xxxx V 3

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