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Surface Mount Fuses

Ceramic Fuse > 441 Series

441 Series – 0603 High I

t Fuse

Description

RoHS

This 100% Lead-free, RoHS compliant and Halogen-free

fuse series has been designed specifically to provide over

current protection to circuits that see high working ambient

temperatures (up to 150ºC) and high inrush currents.

The fuse design ensures excellent temperature stability and

performance reliability.

This high I²t fuse series is designed to have ultra high inrush

current withstand capability to avoid nuisance fuse open.

Agency Approvals

AGENCY

AGENCY FILE NUMBER

E10480

29862

AMPERE RANGE

2A - 6A

Features

• Suitable for both leaded

and lead-free reflow /

wave soldering

• 100% Lead-free, Halogen-

Free and RoHS compliant • Ultra high I²t values

• Operating Temperature

from -55ºC to 150ºC

Electrical Characteristics

% of Ampere

Rating

100%

350%

Ampere Rating

2A - 6A

Opening Time at 25ºC

4 Hours Minimum

5 Seconds Maximum

Applications

• Handheld Electronics

• LCD Displays

• Battery Packs

• Hard Disk Drives

• SD Memory Cards

Electrical Specifications by Item

Ampere

Rating

(A)

2.5

3.5

Notes:

1. DC Interrupting Rating tested at rated voltage with time constant < 0.8 msecs.

2. Nominal Resistance measured with < 10% rated current.

3. Nominal Melting I²t measured at 1 msec. opening time.

4. Nominal Voltage Drop measured at rated current after temperature has stabilized.

Devices designed to carry out rated current for 4 hours minimum. It is recommended that

devices be operated continuously at no more than 80% rated current. See “Temperature

Re-rating Curve”for additional re-rating information.

Devices designed to be mounted with marking code facing up.

Amp Max. Voltage

Code

Rating (V)

002.

02.5

003.

03.5

004.

005.

006.

Interrupting

Rating

Nominal

Resistance Melting I

Sec.)

(Ohms)

0.0302

0.0200

0.0158

0.3103

0.5520

0.8165

0.9438

1.2659

1.6287

2.6049

Nominal Voltage

Drop At Rated

Current (V)

0.0551

0.0534

0.0531

0.0468

0.0475

0.0472

0.0464

Nominal Power Agency Approvals

Dissipation At

Rated Current (W)

0.110

0.134

0.159

0.164

0.190

0.236

0.278

50 A @ 32 VDC

0.0117

0.0097

0.0073

0.0056

Additional Information

Datasheet

Resources

Samples

Specifications are testing to change without notice.

Specifications are subject to change without notice. Application subject is strongly recommended.

Revised: 02/15/18

Surface Mount Fuses

Ceramic Fuse > 441 Series

Temperature Re-rating Curve

Average Time Current Curves

2.5A

3.5A

CURRENT IN AMPERES

140

100

PERCENT OF RATING

120

100

TIME IN SECONDS

-65

-45

-25

-5

115

135

155

TEMPERATURE (°C)

0.1

Note:

1. Re-rating depicted in this curve is in addition to the standard re-rating of 20% for

continuous operation.

For continuous operation at 75 degrees celsius, the fuse should be rerated as follows:

I = (0.80)(0.85)I

RAT

= (0.68)I

RAT

0.001

0.01

100

Soldering Parameters

Reflow Condition

- Temperature Min (T

s(min)

)

Pre Heat

- Temperature Max (T

s(max)

)

- Time (Min to Max) (t

)

Average Ramp-up Rate (Liquidus Temp

) to peak)

S(max)

to T

- Ramp-up Rate

Reflow

- Temperature (T

) (Liquidus)

- Temperature (t

)

Pb – free assembly

150°C

60 – 180 seconds

3°C/second max.

5°C/second max.

217°C

60 – 150 seconds

260

+0/-5

°C

10 – 30 seconds

6°C/second max.

8 minutes max.

260°C

Temperature

Ramp-up

Critical Zone

to T

200°C

S(max)

S(min)

Preheat

Ramp-down

time to peak temperature

(t 25ºC to peak)

Time

Peak Temperature (T

)

Time within 5°C of actual peak

Temperature (t

)

Ramp-down Rate

Time 25°C to peak Temperature (T

)

Do not exceed

Wave Soldering

260°C, 10 seconds max.

Specifications are subject to change without notice.

Revised: 02/15/18

Surface Mount Fuses

Ceramic Fuse > 441 Series

Product Characteristics

Body:

Advanced Ceramic

Terminations:

Ag / Ni / Sn (100% Lead-free)

Element Cover Coating:

Lead-free Glass

Moisture Resistance

Thermal Shock

Mechanical Shock

Vibration

Vibration,

High Frequency

Dissolution of

Metallization

Terminal Strength

MIL

-STD-202, Method 106

MIL

-STD-202, Method 107

Condition B

MIL

-STD-202, Method 213,

Condition A

MIL

-STD-202, Method 201

MIL

-STD-202, Method 204,

Condition D

IPC/ECA/JEDEC J-STD-002

IEC 60127-4

Materials

Moisture

IPC/JEDEC J-STD-020, Level 1

Sensitivity Level

Solderability

Humidity

Resistance to

Solder Heat

IPC/ECA/JEDEC J-STD-002, Condition C

MIL-STD-202, Method 103, Conditions D

MIL-STD-202, Method 210, Condition B

Dimensions

Part Marking System

Amp Code

Marking Code

0.530 +/- 0.150

[0.021 +/- 0.006]

1.54 +/- 0.150

[0.061 +/- 0.006]

002.

02.5

003.

03.5

004.

005.

006.

0.850 +/- 0.150

[0.033 +/- 0.006]

0.502 +/- 0.080

[0.020 +/- 0.003]

Part Numbering System

0441 005. W R

SERIES

PACKING CODE

0.432 +/- 0.150

[0.017 +/- 0.006]

AMP CODE

R = Reel Pack

See Amp Code in Electrical

Specification section

0.60

[0.024]

0.74

[0.029]

QUANTITY CODE

W = 3000 pcs

1.00

[0.039]

Packaging

Option

1.94

[0.076]

Packaging

Specification

EIA-481, IEC

60286, Part 3

Quantity

3000

Quantity &

Packaging Code

8mm Tape and

Reel

Disclaimer Notice - Littelfuse products are not designed for, and shall not be used for, any purpose (including, without limitation, automotive, military,

aerospace, medical, life-saving, life-sustaining or nuclear facility applications, devices intended for surgical implant into the body, or any other

application in which the failure or lack of desired operation of the product may result in personal injury, death, or property damage) other than those

expressly set forth in applicable Littelfuse product documentation. Warranties granted by Littelfuse shall be deemed void for products used for any

purpose not expressly set forth in applicable Littelfuse documentation. Littelfuse shall not be liable for any claims or damages arising out of products

used in applications not expressly intended by Littelfuse as set forth in applicable Littelfuse documentation. The sale and use of Littelfuse products is

subject to Littelfuse Terms and Conditions of Sale, unless otherwise agreed by Littelfuse. Information furnished is believed to be accurate and reliable.

However, users should independently evaluate the suitability of and test each product selected for their own applications. Littelfuse products are not

designed for, and may not be used in, all applications. Read complete Disclaimer Notice at

www.littelfuse.com/disclaimer-electronics.

Specifications are subject to change without notice.

Revised: 02/15/18