Littelfuse 233 User Manual

Axial Lead & Cartridge Fuses

5×20 mm > Medium-Acting > 233 Series

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

PS

E

Description

5×20mm medium–acting glass body fuse designed to UL
specification.

Features

Agency Approvals

Agency Agency File Number Ampere Range

Cartridge Certificates:
NBK190609-JP1021A

PS

E

NBK030609-JP1021B
Leaded Certificates:

NBK190609-JP1021B
NBK030609-JP1021D

Certificates:
SU05001 – 2010

Listed File:
E10480
Guide:
JDYX

Fle:
029862
Acc. Class:
LR1422-01

1A – 10A

1A – 5A

6A – 10A

1A – 5A

6A – 10A

1A – 6.5A

1A – 10A

1A – 6A

8A – 10A

• DesingedtoUL/CSA/

ANCE 248 Standard

• RoHScompliantand
lead-free

• Availableincartridgeand

axial lead format

Applications

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

Electrical Characteristics for Series

% of Ampere

Rating

100%

135%

200%

Ampere

Rating

1A – 3.5A 4 hours, Minimum

4A – 7A 1 hour, Minimum

8A – 10A 1 hour, Minimum

1A – 3.5A 15 sec., Min; 1500 sec., Max.

4A – 7A 15 sec., Min; 1500 sec., Max.

8A – 10A 3 sec., Min; 3600 sec., Max.

1A – 3.5A .60 sec., Min; 3 sec., Max.

4A – 7A .60 sec., Min; 3 sec., Max.

8A – 10A 0.4 sec., Min; 2.25 sec., Max.

Opening Time

Electrical Characteristic Specifications by Item

Amp Code

0 01. 1 125

1.25 1.25 125 0.1263 3.39000 x x x x x

01. 6 1. 6 125 0.0880 6.14000 x x x x x

002. 2 125 0.0684 9.97000 x x x x x

02.5 2.5 125 0.0521 17.04500 x x x x x

003. 3 125 0.0431 26.24000 x x x x x

3.15 3.15 125 0.0380 29.79500 x x x x x

03.5 3.5 125 0.0322 36.27500 x x x x x

004. 4 125 0.0293 51.61000 x x x x x

005. 5 125 0.0217 89.97500 x x x x x

006. 6 125 0.0179 131.45500 x x x x x

06.3 6.3 125 0.0166 151.90500 x x x x x

007. 7 125 0.0137 157.31000 x x x

008. 8 125 0.0084 169.43500 x x x x

010. 10 125 0.0066 274.11500 x x x x

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

Amp

Rating

(A)

Voltage

Rating

(V)

Interrupting

Rating

10,000A @ 125 VAC

Nominal Cold

Resistance

(Ohms)

0.1750 1.97500 x x x x x

Nominal Melting

2

t

I

(A2 sec)

Agency Approvals

PS

E

Axial Lead & Cartridge Fuses

300

240

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

5×20 mm > Medium-Acting > 233 Series

Average Time Current CurvesTemperature Rerating Curve

1A

1.25A

1.6A2A2.5A3A3.15A

10000

1000

100

TIME IN SECONDS

3.5A4A5A6A6.3A7A8A

10A

0.1

0.01

0.001
110100 1000

CURRENT IN AMPERES

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.

Specifications are subject to change without notice.

© 2013 Littelfuse, Inc.

Revised: 12/19/13