Introduction to Circuit Protection

Introduction to Circuit Protection

Transientology

50

© 2009 Littelfuse, Inc.

Specifications are subject to change without notice.

Surface Mount Fuses

448 Series

Please refer to www.littelfuse.com/series/448.html for current information.

Ampere

Rating

(A)

Amp Code

Max

Voltage

Rating

(V)

Interrupting

Rating

Nominal Cold

Resistance

(Ohms)

Nominal

Melting

Agency Approvals

PS

E

0.062

.062

125

50 amperes

300 amperes

5.50

0.00023

x

x

0.080

.080

125

4.42

0.00043

x

x

0.100

.100

125

2.90

0.00082

x

x

0.125

.125

125

2.58

0.00130

x

x

0.160

.160

125

1.76

0.00280

x

x

0.200

.200

125

1.40

0.00380

x

x

0.250

.250

125

1.05

0.01520

x

x

0.315

.315

125

0.7900

0.02650

x

x

0.375

.375

125

0.7300

0.02400

x

x

0.400

.400

125

0.4895

0.04160

x

x

0.500

.500

125

0.3800

0.10000

x

x

0.630

.630

125

0.2821

0.121

x

x

0.750

.750

125

0.2475

0.206

x

x

0.800

.800

125

0.1907

0.272

x

x

1.00

001.

125

0.08630

0.441

x

x

x

1.25

1.25

125

0.06619

0.900

x

x

x

1.50

01.5

125

0.06514

0.900

x

x

x

1.60

01.6

125

0.06261

1.122

x

x

x

2.00

002.

125

0.03529

0.812

x

x

x

2.50

02.5

125

0.02934

1.156

x

x

x

3.00

003.

125

0.02445

1.720

x

x

x

3.15

3.15

125

0.02300

1.810

x

x

x

3.50

03.5

125

0.02100

2.300

x

x

x

4.00

004.

125

0.01577

3.970

x

x

x

5.00

005.

125

0.01531

4.490

x

x

x

6.30

06.3

125

0.01044

12.10

x

x

x

7.00

007.

125

0.00900

13.92

x

x

x

8.00

008.

125

0.00780

18.33

x

x

x

10.00

010.

125

35 amperes

50 amperes

300 amperes

0.00700

28.00

x

x

x

12.00

012.

65

50 amperes

300 amperes

0.00533

47.59

x

x

15.00

015.

65

0.00394

96.10

x

x

Electrical Specifications by Item

Notes:

- Resistance is measured at 10% of rated current, 25ºC