Revised: May 6, 2009

Introduction to Circuit Protection

Introduction to Circuit Protection

Transientology

152

© 2009 Littelfuse, Inc.

Specifications are subject to change without notice.

Radial Lead Fuses

374 Series

Please refer to www.littelfuse.com/series/374.html for current information.

Average Time Current Curves

Temperature De-Rating Curve

Electrical Characteristics

Amp

Code

Rated

Current

Voltage

Rating

Breaking Capacity

Voltage

Drop

1.0 x I

N

max. (mV)

Power

Dissipation

1.0 x I

N

max. (mW)

Melting

Integral

10 x I

N

Agency Approvals

®

0050

50mA

ϕ = 1.0

900

45

0.0056

x

x

0063

63mA

800

50

0.009

x

x

0080

80mA

700

55

0.014

x

x

0100

100mA

600

60

0.025

x

x

0125

125mA

550

70

0.044

x

x

0160

160mA

480

80

0.058

x

x

0200

200mA

390

80

0.1

x

x

0250

250mA

350

90

0.17

x

x

0315

315mA

300

95

0.26

x

x

0400

400mA

250

100

0.32

x

x

0500

500mA

220

110

0.6

x

x

0630

630mA

210

135

0.75

x

x

0800

800mA

160

130

0.98

x

x

1100

1.00A

155

155

2.1

x

x

1125

1.25A

145

185

3.2

x

x

1160

1.60A

130

210

4.5

x

x

1200

2.00A

125

250

7.5

x

x

1250

2.50A

120

300

14

x

x

1315

3.15A

110

350

22

x

x

1400

4.00A

100

400

36

x

x

1500

5.00A

95

475

59

x

x

1630

6.30A

90

570

110

x

x

1800

80

1000

150

x

2100

90

1250

280

x

CURRENT IN AMPERES

0.001

0.010

0.100

1

10

100

1000

10000

100000

0.100

1

10

100

0.02