Surface Mount Fuses Ceramic Fuse > 441 Series 441 Series – 0603 High I2t Fuse Description 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. This high I²t fuse series is designed to have ultra high inrush current withstand capability to avoid nuisance fuse open. Features Agency Approvals AGENCY AGENCY FILE NUMBER AMPERE RANGE E10480 2A - 6A LR29862 2A - 6A t 0QFSBUJOH5FNQFSBUVSF from -55ºC to 150ºC t -FBEGSFFBOE RoHS compliant Electrical Characteristics t 4VJUBCMFGPSCPUIMFBEFE and lead-free reflow / wave soldering t 6MUSBIJHI*¤UWBMVFT Applications % of Ampere Rating Ampere Rating Opening Time at 25ºC 100% 2A - 6A 4 Hours Minimum 350% 2A - 6A 5 Seconds Maximum t )BOEIFME&MFDUSPOJDT t )BSE%JTL%SJWFT t -$%%JTQMBZT t 4%.FNPSZ$BSET t #BUUFSZ1BDLT t "VUPNPUJWF&MFDUSPOJDT Electrical Specifications by Item Ampere Rating (A) Amp Max. Voltage Code Rating (V) Interrupting Rating Nominal Nominal Resistance Melting I2t (A2Sec.)3 (Ohms)2 Nominal Voltage Drop At Rated Current (V)4 Nominal Power Agency Approvals Dissipation At Rated Current (W) 2 002. 32 0.0302 0.3103 0.0551 0.110 X X 2.5 02.5 32 0.0200 0.5520 0.0534 0.134 X X 3 003. 32 0.0158 0.8165 0.0531 0.159 X X 3.5 03.5 32 0.0117 0.9438 0.0468 0.164 X X 4 004. 32 0.0097 1.2659 0.0475 0.190 X X 5 005. 32 0.0073 1.6287 0.0472 0.236 X X 6 006. 32 0.0056 2.6049 0.0464 0.278 X X 50 A @ 32 VDC Notes: 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 Rerating Curve”for additional rerating information. 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. Devices designed to be mounted with marking code facing up. 4. Nominal Voltage Drop measured at rated current after temperature has stabilized. © 2009 Littelfuse, Inc. Specifications are subject to change without notice. Please refer to www.littelfuse.com/series/441.html for current information. 1 Revised: June 15, 2010 441 Series 441 Series The general design ensures excellent temperature stability and performance reliability. Mount Fuses IntroductionSurface to Circuit Protection Ceramic FuseTransientology > 441 Series 100 140 120 10 100 80 60 40 -65 -45 -25 -5 15 35 55 75 95 115 135 1 TIME IN SECONDS PERCENT OF RATING 2.5A 3A 3.5A 4A 5A 6A Average Time Current Curves 2A Temperature Rerating Curve 155 TEMPERATURE (°C) 0.1 Note: 1. Rerating depicted in this curve is in addition to the standard rerating of 20% for continuous operation. 0.01 For continuous operation at 75 degrees celsius, the fuse should be rerated as follows: I = (0.80)(0.85)IRAT = (0.68)IRAT 0.001 1 10 100 CURRENT IN AMPERES Soldering Parameters Reflow Condition - Temperature Min (Ts(min)) 150°C - Temperature Max (Ts(max)) 200°C - Time (Min to Max) (ts) oTFDPOET Average Ramp-up Rate (Liquidus Temp (TL) to peak) 3°C/second max. TS(max) to TL - Ramp-up Rate 5°C/second max. Reflow - Temperature (TL) (Liquidus) 217°C - Temperature (tL) oTFDPOET Peak Temperature (TP) 260+0/-5 °C Time within 5°C of actual peak Temperature (tp) oTFDPOET Ramp-down Rate 6°C/second max. Time 25°C to peak Temperature (TP) 8 minutes max. Do not exceed 260°C Wave Soldering 441 Series tP TP Critical Zone TL to TP Ramp-up TL TS(max) Temperature Pre Heat 1CoGSFFBTTFNCMZ tL Ramp-down TS(min) Preheat tS 25 time to peak temperature (t 25ºC to peak) Time 260°C, 10 seconds max. 2 © 2009 Littelfuse, Inc. Specifications are subject to change without notice. Please refer to www.littelfuse.com/series/441.html for current information. 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 Materials Moisture *1$+&%&$+45%$-FWFM Sensitivity Level Moisture Resistance MIL-STD-202, Method 106G Thermal Shock MIL-STD-202, Method 107G, $POEJUJPO# Mechanical Shock .*-45%.FUIPE# Condition A Vibration MIL-STD-202, Method 201A Vibration, High Frequency MIL-STD-202, Method 204D, Condition D *1$&$"+&%&$+45%$$POEJUJPO$ Humidity .*-45%.FUIPE#$POEJUJPOT% ESD Immunity *&$L7%JSFDU *1$&$"+&%&$+45%$ Condition D Resistance to Solder Heat Dissolution of Metallization .*-45%.FUIPE'$POEJUJPO# Terminal Strength *&$ Dimensions 441 Series Solderability Part Marking System 0.530 +/- 0.150 [0.021 +/- 0.006] Amp Code Marking Code 002. N 1.54 +/- 0.150 [0.061 +/- 0.006] 0.850 +/- 0.150 [0.033 +/- 0.006] 02.5 O 003. P 03.5 R 004. S 005. T 006. U 0.502 +/- 0.080 [0.020 +/- 0.003] Part Numbering System 0441 005. W R SERIES PACKING CODE 33FFM1BDL AMP CODE 0.432 +/- 0.150 [0.017 +/- 0.006] QUANTITY CODE 0.60 [0.024] W = 3000 pcs 0.74 [0.029] 1.00 [0.039] 1.94 [0.076] Packaging Packaging Option Packaging Specification Quantity Quantity & Packaging Code 8mm Tape and Reel &*"*&$QBSU 3000 WR © 2009 Littelfuse, Inc. Specifications are subject to change without notice. Please refer to www.littelfuse.com/series/441.html for current information. 3 441 Series Introduction to Circuit Protection Transientology 4 © 2009 Littelfuse, Inc. Specifications are subject to change without notice.