0441003.WR

**Surface Mount Fuses** Ceramic Fuse > 441 Series 

**RoHS** ~~**Pb** [_JOHF SAL @,~~ 

## 441 Series – 0603 High I2t Fuse 

## ~~**Description** Po~~ 

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** eee,~~ 

## ~~**Features**~~ 

- Operating Temperature • Suitable for both leaded from -55ºC to 150ºC and lead-free reflow / wave soldering 

AGENCY AGENCY FILE NUMBER AMPERE RANGE W E10480 2A - 6A 29862 2A - 6A 

- 100% Lead-free, HalogenFree and RoHS compliant • Ultra high I²t values 

29862 2A - 6A Free and RoHS compliant • Ultra high I²t values G, ~~**Electrical Characteristics Applications** EE ee~~ 

- Handheld Electronics • Hard Disk Drives 

|% of Ampere<br>Rating|Ampere Rating|Opening Time at 25ºC|
|---|---|---|
|100%|2A - 6A|4 Hours Minimum|
|350%|2A - 6A|5 Seconds Maximum|



- LCD Displays 

   - SD Memory Cards 

- Battery Packs 

## ~~**Electrical Specifcations by Item**~~ 

|Ampere<br>Rating<br>(A)<br>Amp<br>Code<br>Max. Voltage<br>Rating (V)<br>2<br>002.<br>32<br>2.5<br>02.5<br>32<br>3<br>003.<br>32<br>3.5<br>03.5<br>32<br>4<br>004.<br>32<br>5<br>005.<br>32<br>6<br>006.<br>32<br>~~|~~<br>~~| |~~<br>~~| |~~<br>~~| |~~<br>~~| |~~<br>~~| |~~<br>~~Lt~~|Max. Voltage<br>Interrupting<br>Rating<br>50 A @ 32 VDC|Nominal<br>Resistance<br>(Ohms)2<br>Nominal<br>Melting I2t<br>(A2Sec.)3<br>Nominal Voltage<br>Drop At Rated<br>Current (V)4<br>Nominal Power<br>Dissipation At<br>Rated Current (W)<br>Agency Approvals<br>0.0302<br>0.3103<br>0.0551<br>0.110<br>X<br>X<br>0.0200<br>0.5520<br>0.0534<br>0.134<br>X<br>X<br>0.0158<br>0.8165<br>0.0531<br>0.159<br>X<br>X<br>0.0117<br>0.9438<br>0.0468<br>0.164<br>X<br>X<br>0.0097<br>1.2659<br>0.0475<br>0.190<br>X<br>X<br>0.0073<br>1.6287<br>0.0472<br>0.236<br>X<br>X<br>0.0056<br>2.6049<br>0.0464<br>0.278<br>X<br>X<br>po<br>~~ee~~<br>~~ee~~<br>~~es~~<br>~~a ee~~<br>~~ee~~<br>~~ee ee~~<br>~~a~~<br>~~ee~~<br>~~ee~~<br>~~ee~~<br>~~a~~<br>~~ee~~<br>~~ee~~<br>~~ee~~<br>~~a ee~~<br>~~ee~~<br>~~a~~<br>~~eeee~~<br>~~ee~~|
|---|---|---|



Notes: 

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

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

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. 

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 be mounted with marking code facing up. 

## **Additional Information** 

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© 2018 Littelfuse, Inc. Specifications are subject to change without notice.  Application testing is strongly recommendedSpecifications are subject to change without notice **.** Revised: 02/15/18 

**Surface Mount Fuses** Ceramic Fuse > 441 Series 

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Temperature Re-rating Curve<br>140<br>120<br>100<br>80<br>60<br>40<br>-65     -45      -25       -5        15       35       55       75       95      115     135    155<br>TEMPERATURE (°C)<br>PERCENT OF RATING<br>**----- End of picture text -----**<br>


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Average Time Current Curves<br>**----- End of picture text -----**<br>


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100<br>10<br>1<br>0.1<br>0.01<br>0.001<br>1  10  100<br>CURRENT IN AMPERES<br>2A 2.5A 3A 3.5A 4A 5A 6A<br>TIME IN SECONDS<br>**----- End of picture text -----**<br>


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)IRAT = (0.68)IRAT 

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||||||||||
|---|---|---|---|---|---|---|---|---|
|Soldering Parameters|
|Reflow Condition|Pb – free assembly|t|P|
|T|P|
|Critical Zone|
|- Temperature Min (Ts(min))|150°C|Ramp-up|TL to TP|
|Pre Heat|- Temperature Max (Ts(max))|200°C|T|S(max)|T|L|t|L|
|- Time (Min to Max) (ts)|60 – 180 seconds|
|Ramp-down|
|Average Ramp-up Rate (Liquidus Temp|3°C/second max.|Preheat|
|(TL) to peak)|T|S(min)|
|TS(max) to TL - Ramp-up Rate|5°C/second max.|t|S|
|Reflow|- Temperature (t- Temperature (TLL)) (Liquidus)|60 – 150 seconds217°C|25|time to peak temperature(t 25ºC to peak)|Time|
|Peak Temperature (TP)|260|[+0/-5]|°C|
|Time within 5°C of actual peak|
|10 – 30 seconds|
|Temperature (tp)|
|Ramp-down Rate|6°C/second max.|
|Time 25°C to peak Temperature (TP)|8 minutes max.|
|Do not exceed|260°C|
|Wave Soldering|260°C, 10 seconds max.|

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© 2018 Littelfuse, Inc. Specifications are subject to change without notice. Revised: 02/15/18 

**Surface Mount Fuses** Ceramic Fuse > 441 Series 

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## ~~**Product Characteristics**~~ 

|**Materials**<br>**Moisture**<br>**Sensitivity Level**|**Body:**Advanced Ceramic<br>**Terminations:**Ag / Ni / Sn (100% Lead-free)<br>**Element Cover Coating:**Lead-free Glass<br>IPC/JEDEC J-STD-020, Level 1|
|---|---|
|**Solderability**|IPC/ECA/JEDEC J-STD-002, Condition C|
|**Humidity**<br>**Resistance to**<br>**Solder Heat**|MIL-STD-202, Method 103, Conditions D<br>MIL-STD-202, Method 210, Condition B|



|**Moisture Resistance**|MIL-STD-202, Method 106|
|---|---|
|**Thermal Shock**|MIL-STD-202, Method 107,<br>Condition B|
|**Mechanical Shock**|MIL-STD-202, Method 213,<br>Condition A|
|**Vibration**|MIL-STD-202, Method 201|
|**Vibration,**|MIL-STD-202, Method 204,|
|**High Frequency**|Condition D|
|**Dissolution of**<br>**Metallization**|IPC/ECA/JEDEC J-STD-002|
|**Terminal Strength**|IEC 60127-4|



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Dimensions Part Marking System<br>Amp Code Marking Code<br>[0.021 +/- 0.006]0.530 +/- 0.150  [0.061 +/- 0.006]1.54 +/- 0.150  002. N<br>02.5 O<br>003. P<br>0.850 +/- 0.150<br>[0.033 +/- 0.006] 03.5 R<br>004. S<br>005. T<br>006. U<br>0.502 +/- 0.080<br>[0.020 +/- 0.003]<br>Part Numbering System<br>0441 005.  W   R<br>SERIES<br>PACKING CODE<br>AMP CODE R = Reel Pack<br>0.432 +/- 0.150<br>[0.017 +/- 0.006] See Amp Code in Electrical<br>Specification section<br>QUANTITY CODE<br>[0.024]0.60 [0.029]0.74 W = 3000 pcs<br>1.00 Packaging<br>[0.039]<br>Packaging  Packaging  Quantity &<br>Quantity<br>Option Specification  Packaging Code<br>1.94<br>[0.076] 8mm Tape and  EIA-481, IEC  3000 WR<br>Reel 60286, Part 3<br>**----- End of picture text -----**<br>


**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.** 

© 2018 Littelfuse, Inc. Specifications are subject to change without notice. Revised: 02/15/18