Littelfuse 234 User Manual

Axial Lead & Cartridge Fuses

5×20 mm > Medium-Acting > 234 Series

234 Series, 5×20 mm, Medium-Acting Fuse

Agency Approvals

Agency Agency File Number Ampere Range

Cartridge Certificates:
NBK290502-E10480 C

PS

E

NBK280602-E10480 E
NBK280602-E10480 G
Leaded Certificates:
NBK290502-E10480 H
NBK280602-E10480 F
NBK280602-E10480 H

Certificates:
SU05001 – 3001
SU05001 – 4001
SU05001 – 2016

Listed File:
E10480
Guide:
JDYX

File:
029862
Certificate Class:
LR1422-01

1A – 3.5A

4A & 5A

6A – 10A

1A – 3.5A

4A & 5A

6A – 10A

1A – 3.15A

3.5A

4A – 10A

1A – 10A

PS

E

Description

5×20mm medium-acting glass/ceramic body cartridge fuse
designed to UL specification.

Features

• DesignedtoUL/CSA/

ANCE 248 Standard

• Availableincartridgeand

axial lead format

• Glassbodyfor1-3.5A,

Ceramic body for 4-10A

• RoHScompliantand
lead-free

Applications

Used as supplementary protection in appliance or
utilization equipment to provide individual protection for
components or internal circuits.

Additional Information

Datasheet

Resources

Samples

Electrical Characteristics for Series

% of Ampere

Rating

100%

135%

200%

Ampere

Rating

1 – 3.5 4 hours, Minimum

4 – 10 1 hour, Minimum

1 – 3.5 3 sec., Min; 1 hr. Max

4 – 10 3 sec., Min; 1 hr. Max

1 – 3.5 400ms., Min; 2.25 sec. Max

4 – 10 400ms., Min; 4 sec. Max

Opening Time

Electrical Characteristic Specification by Item

Amp Code

0 01. 1 250

1.25 1.25 250 0.1262 3.39000 x x x x x

01. 6 1.6 250 0.0884 6.14000 x x x x x

002. 2 250 0.0684 9.97000 x x x x x

02.5 2.5 250 0.0521 17.04500 x x x x x

003. 3 250 0.0431 26.2400 x x x x x

3.15 3.15 250 0.0380 29.79500 x x x x x

03.5 3.5 250 0.0322 36.27500 x x x x x

004. 4 250

005. 5 250 0.0214 20.64500 x x x x x

006. 6 250 0.0194 33.01500 x x x x x

06.3 6.3 250 0.0168 37.68500 x x x x x

008. 8 250 0.0144 80.67500 x x x x x

010. 10 250 0.0107 129.02500 x x x x x

Ampere

Rating

(A)

Voltage

Rating

(V)

Interrupting

Rating

100A @ 250 VAC

10000A @ 125 VAC

200A @ 250 VAC

10000A @ 125 VAC

Nominal Cold

Resistance

(Ohms)

0.1750 1.97500 x x x x x

0.0304 10.37000 x x x x x

Nominal

Melting

2

t (A2 sec)

I

Agency Approvals

PS

E

Specifications are subject to change without notice.

© 2013 Littelfuse, Inc.

Revised: 12/19/13

Axial Lead & Cartridge Fuses

10000

1000

100

10

1

0.1

0.01

0.001
110100 1000

CURRENT IN AMPERES

TIME IN SECONDS

1A

1.25A

1.6A2A2.5A3A3.15A

3.5A4A5A6A6.3A8A10A

300

240

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

5×20 mm > Medium-Acting > 234 Series

Average Time Current CurvesTemperature Rerating Curve

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

Dwell Time

Recommended Process Parameters:

Wave Parameter Lead-Free Recommendation

Preheat:

(Depends on Flux Activation Temperature)

Temperature Minimum:
Temperature Maximum:

(Typical Industry Recommendation)

100

° C

150

° C

Preheat Time: 60-180 seconds

Solder Pot Temperature:

260

° C Maximum

Solder Dwell Time: 2-5 seconds

Recommended Hand-Solder Parameters:

140

150

160

170

180

190

200

210

220

230

Cooling Time

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

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