501 LITTELFUSE | Alldatasheet
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Technical content
Features
from -55ºC to +150ºC t %FTJHOFEUPQSPWJEF over-current protection in high current voltage regulator module (VRM)
applications
3P)4 compliant and Halogen- free t 4VJUBCMFGPSCPUIMFBEFE and lead-free reflow / wave soldering Electrical Characteristics for Series % of Ampere Rating Ampere Rating Opening Time at 25ºC 100% 10A – 20A 4 Hours, Minimum 350% 10A – 20A 5 Seconds, Maximum Module (VRM) Equipment t /PUFCPPL1$ t %$%$$POWFSUFS Ampere Rating (A) Amp Code Max. Voltage Rating (V) Interrupting Rating (DC)1 Nominal Resistance (Ohms)2 Nominal Melting I2T (A2Sec.)3 Nominal Voltage Drop At Rated Current (V)4 Nominal Power Dissipation At Rated Current (W) Agency Approvals 10 010. 24 "!7%$ 0.00427 10.385 0.05679 0.5679 x x Electrical Specifications by Item /PUFT %$*OUFSSVQUJOH3BUJOHUFTUFEBUSBUFEWPMUBHFXJUIUJNFDPOTUBOU NTFD /PNJOBM3FTJTUBODFNFBTVSFEXJUI SBUFEDVSSFOU /PNJOBM.FMUJOH* 2t measured at 1 msec. opening time. For other I2t data refer to chart. /PNJOBM7PMUBHF%SPQNFBTVSFEBUSBUFEDVSSFOUBGUFSUFNQFSBUVSFIBTTUBCJMJ[FEBOE XJUIGVTFNPVOUFEPOCPBSEXJUIP[$VUSBDF %FWJDFTEFTJHOFEUPDBSSZSBUFEDVSSFOUGPSIPVSTNJOJNVN*UJTSFDPNNFOEFEUIBU devices be operated continuously at no more than 80% rated current. See “Temperature Rerating Curve”for additional rerating information. %FWJDFTEFTJHOFEUPCFNPVOUFEXJUINBSLJOHDPEFGBDJOHVQ Revised: August 25, 2009
Introduction to Circuit ProtectionIntroduction to Circuit Protection Transientology 26 © 2009 Littelfuse, Inc. Specifications are subject to change without notice. Surface Mount Fuses
501 Series
Ceramic Fuse > 501 Series Please refer to www.littelfuse.com/series/501.html for current information. Average Time Current Curves Reflow Condition 1CoGSFFBTTFNCMZ Pre Heat - Temperature Min (Ts(min)) 150°C - Temperature Max (Ts(max)) 200°C - Time (Min to Max) (ts) 60 – 180 seconds 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) 60 – 150 seconds Peak Temperature (TP) 260+0/-5 °C Time within 5°C of actual peak Temperature (tp) 10 – 30 seconds Ramp-down Rate 6°C/second max. Time 25°C to peak Temperature (TP) 8 minutes max. Do not exceed 260°C Soldering Parameters T emperature Rerating Curve 100 120 140 -65 -45 -25 -5 15 35 55 75 95 115 135 155 TEMPERATURE (°C) PERCENT OF RATING Wave Soldering 260°C, 10 seconds max. &YBNQMF 'PSDPOUJOVPVTPQFSBUJPOBUEFHSFFTDFMTJVT UIFGVTFTIPVMECFSFSBUFEBTGPMMPXT I = (0.80)(0.85)I RAT = (0.68)IRAT /PUF 1 . Rerating depicted in this curve is in addition to the standard rerating of 20% for continuous operation. Time Temperature TP TL TS(max) TS(min) tP tL tS time to peak temperature (t 25ºC to peak) Ramp-down Ramp-up Preheat Critical Zone TL to TP
27© 2009 Littelfuse, Inc. Specifications are subject to change without notice. Surface Mount Fuses Ceramic Fuse > 501 Series Please refer to www.littelfuse.com/series/501.html for current information. Body: Advanced Ceramic T erminations: "H/J4O -FBEGSFF Element Cover Coating: Lead-free Glass Moisture Sensitivity Level *1$+&%&$+45%$ -FWFM $POEJUJPO# Humidity T est .*-45% .FUIPE# $POEJUJPOT% ESD Immunity *&$ L7%JSFDU Resistance to Solvents .*-45% .FUIPE' $POEJUJPO# Product Characteristics Moisture Resistance .*-45% .FUIPE( Thermal Shock .*-45% .FUIPE( $POEJUJPO# Mechanical Shock .*-45% .FUIPE# Condition A Vibration .*-45% .FUIPE" Vibration, High Frequency .*-45% .FUIPE% $POEJUJPO% Dissolution of Metallization $POEJUJPO% T erminal Strength IEC 60127-4 Dimensions Packaging Part Marking System Packaging Option Packaging Specification Quantity Quantity & Packaging Code 8mm Tape and Reel EIA-481-1 (IEC 286, part 3) 3000 WR Part Numbering System 0501 020. W R SERIES AMP CODE QUANTITY CODE PACKING CODE W = 3000 pcs 3FFM1BDL 1.000 [.039] 1.63 +.10/-.20 [.064 +.004/-.008] 3.200 ± .1778 [.126 ± .007] .8179 +.046/-.076 TERMINATION .520 ± .200 [.020 ± .008] 1.500 [.059] 1.800 [.071] 3.500 [.138] 1.000 [.039] Amp Code Marking Code 010. 10 012. 12 015. 15 020. 20
Introduction to Circuit ProtectionIntroduction to Circuit Protection Transientology 28 © 2009 Littelfuse, Inc. Specifications are subject to change without notice.