Littelfuse 397 User Manual

Radial Lead Fuses

TE5® > Transient Tolerant Fuse > 397 Series

397 Series, TE5® Transient Tolerant Fuse

Description

The 397 Series are TE5®, time-Lag type, 125V rated fuses,
designed in accordance to UL248-14.

Features

Agency Approvals

Agency Agency File Number Ampere Range

File No.: E67006 350mA - 1.5A

File No.: E67006 350mA - 1.5A

Electrical Characteristics

% of Ampere

Rating

200% 60 Seconds, Min.

570% 80 ms. Min.; 2 Sec. Max.

1700% 200 s., Max.

Opening Time

Electrical Characteristics

• SurgeProoffortelecom

applications

• ReducedPCBspace

requirements

• Directsolderableor
plug-in versions

• Shocksafecasing

Applications

• Batterychargers

• ConsumerElectronics

Additional Information

Datasheet

Resources

• Vibrationresistant

• Halogenfree

• RoHScompliantand

Lead-free

• Availablefrom350mA
to 1.5A

• Powersupplies

• Industrialcontrollers

Samples

Surge Amplitude

N

2

s)

1

(A)

FCC

Bellcore

Specifications are subject to change without notice.

Power

Dissipation

1.0×I

max. (mW)

Voltage

Amp

Code

0350 350 mA 125 V
0500 500 mA 125 V 340 170 0.79 30 17 38 x x
0800 800 mA 125 V 300 240 2.4 60 31 50 x x

110 0 1.00 A 125 V 240 240 3.5 78 40 65 x x
112 5 1.25 A 125 V 200 250 5 10 0 50 67 x x
115 0 1.50 A 125 V 190 285 8.5 155 78 67 x x

1

FCC 47 Part 68: Minimum pulse load quantity is 2 pulses at a test generator output of 800 V and 10x560 µs waveform.
ITU-T K.20: Minimum pulse load quantity is 30 pulses at a test generator output of 1000 V, 67 A and 10x700 µs waveform.
Bellcore GR-1089: Minimum pulse load quantity is 50 pulses at a test generator output of 1000 V and 10x1000 µs.

Note: 1.00 means the number one with two decimal places. 1,000 means the number one thousand.

Rated

Current

Voltage

Rating

Breaking Capacity

50A / 125 VAC

50-60 Hz

cos ϕ = 1.0

Drop

1.0×I

N

max. (mV)

400 140 0.38 25 15 29 x x

Melting
Integral

10×I

N

min. (A

Agency

Approvals

ITU

© 2013 Littelfuse, Inc.

Revised: 12/19/13

Radial Lead Fuses

300

240

Temperature (°C) - Measured on bottom side of board

08

TE5® > Transient Tolerant Fuse > 397 Series

Temperature Rerating Curve

140

120

100

80

60

40

PERCENT OF RATING

20

0

-40-20 020406

23°C

AMBIENTTEMPERATURE (°C)

Average Time Current Curves

1.25A

0.500A

1.50A

0.800A

1.00A

1 10 100 10000.20

CURRENT IN AMPERES

100000

0

0.350A

10000

1000

100

10

TIME IN SECONDS

1

0.100

0.010

0.001

Soldering Parameters - Wave Soldering

280

260

240

220

200

180

160

140

120

100

80

60

40

20

0

0

102030405060708090

Time (Seconds)

Preheat Time

100

110

120

130

140

150

160

170

180

190

200

210

220

Dwell Time

Cooling Time

Recommended Process Parameters:

Wave Parameter Lead-Free Recommendation

Preheat:

(Depends on Flux Activation Temperature)

Temperature Minimum:
Temperature Maximum:
Preheat Time: 60-180 seconds

Solder Pot Temperature:
Solder Dwell Time: 2-5 seconds

Recommended Hand-Solder Parameters:

230

Solder Iron Temperature: 350° C +/- 5°C
Heating Time: 5 seconds max.

(Typical Industry Recommendation)

100

° C

150

° C

260

° C Maximum

Note: These devices are not recommended for IR or
Convection Reflow process.

© 2013 Littelfuse, Inc.
Specifications are subject to change without notice.
Revised: 12/19/13