WILLAS SFM21L THRU SFM28L 2.0A SURFACE MOUNT SUPER FAST RECTIFIERS -50V- 600V SMA-LS PACKAGE FEATURES * Batch process design,excellent power dissipation offers better reverse leakage current and thermal resistance. * Low profile surface mounted application in order to .196(4.90) .180(4.50) optimize board space. * High current capability, low forward voltage drop. * High surge capability. * Superfast recovery tim for switching mode application. .012(0.30)Typ. .106(2.70) .091(2.30) * Glass passivated chip junction. * RoHS product for packing code suffix "G" Halogen free product for packing code suffix "H" MECHANICAL DATA .068(1.70) .060(1.50) Case: Molded plastic, DO-214AC / SMA-LS Epoxy: UL 94V-O rate flame retardant Terminals: Solder plated, solderable per MIL-STD-750, Method 2026. .040(1.00) Typ. Mounting position: Any Weight: Approximated 0.05 gram. .040(1.00) Typ. Dimensions in inches and (millimeters) MAXIMUM RATINGS AND ELECTRICAL CHARACTERISTICS Ratings at 25℃ ambient temperature unless otherwise specified. Single phase half wave, 60Hz, resistive of inductive load. For capacitive load, derate current by 20% SYMBOL SFM21L SFM22L SFM23L SFM24L SFM25L SFM26L SFM27L R A T IN G S Marking Code SFM28L S21 S22 S23 S24 S25 S26 S27 S28 UNIT Maximum Recurrent Peak Reverse Voltage VRRM 50 100 150 200 300 400 500 600 Volts Maximum RMS Voltage VRMS 35 70 105 140 210 280 350 420 Volts VDC 50 100 150 200 300 400 500 600 Volts Maximum DC Blocking Voltage IO 2.0 Amps IFSM 50 Amps 35 25 ℃/W Operating Temperature Range RΘJC CJ TJ Storage Temperature Range TSTG -55 to +150 -55 to +150 ℃ ℃ Maximum Average Forward Rectified Current Peak Forward Surge Current 8.3 ms single half sine-wave superimposed on rated load (JEDEC method) Typical Thermal Resistance (Note 2) Typical Junction Capacitance (Note 1) PF SYMBOL SFM21L SFM22L SFM23L SFM24L SFM25L SFM26L SFM27L CHARACTERISTICS VF Maximum Forward Voltage at 2.0A DC Maximum Average Reverse Current at @T J=25℃ Rated DC Blocking Voltage @T J=100℃ Maximum Reverse Recovery Time (Note 3) IR Trr 0.95 5 100 35 1.25 SFM28L 1.70 UNIT Volts uAmps nS NOTES: 1- Measured at 1 MHZ and applied reverse voltage of 4.0 VDC. 2- Thermal Resistance From Junction to case mounted on FR-4 PCB. 3- Reverse recovery time test condition, I=0.5A, I=1.0A, I=0.25A 2012-12 WILLAS ELECTRONIC CORP. WILLAS SFM21L THRU SFM28L 2.0A SURFACE MOUNT SUPER FAST RECTIFIERS -50V- 600V SMA-LS PACKAGE Pb Free Product RATING AND CHARACTERISTIC CURVES FIG.2-TYPICAL FORWARD CURRENT DERATING CURVE FIG.1-TYPICAL FORWARD 26 SF M L~ L 25 SF M 27 L~ SF M 28 SF M SF L M2 1L ~S FM 24 L INSTANTANEOUS FORWARD CURRENT,(A) 1.0 AVERAGE FORWARD CURRENT,(A) CHARACTERISTICS 10 .1 2.4 2.0 1.6 Single Phase 1.2 Half Wave 60Hz Resistive Or Inductive Load 0.8 0.4 0 0 25 50 75 100 125 150 175 AMBIENT TEMPERATURE ( C) TJ=25 C Pulse Width 300us 1% Duty Cycle .01 .6 .8 1.0 1.2 1.4 1.6 1.8 FORWARD VOLTAGE,(V) FIG.3- TEST CIRCUIT DIAGRAM AND REVERSE RECOVERY TIME CHARACTERISTICS 50 NONINDUCTIVE 10 NONINDUCTIVE ( ) (+) D.U.T. 25Vdc (approx.) PULSE GENERATOR (NOTE 2) ( ) 1 NONINDUCTIVE OSCILLISCOPE (NOTE 1) PEAK FORWARD SURGE CURRENT,(A) .001 .4 FIG.4-MAXIMUM NON-REPETITIVE FORWARD SURGE CURRENT 50 40 30 8.3ms Single Half TJ=25 C Sine Wave 20 JEDEC method 10 0 1 5 (+) 50 10 100 NUMBER OF CYCLES AT 60Hz NOTES: 1. Rise Time= 7ns max., Input Impedance= 1 megohm.22pF. 2. Rise Time= 10ns max., Source Impedance= 50 ohms. FIG.5-TYPICAL JUNCTION CAPACITANCE 70 JUNCTION CAPACITANCE,(pF) trr | | | | | | | | +0.5A 0 -0.25A -1.0A 60 50 40 30 20 10 1cm SET TIME BASE FOR 50 / 10ns / cm 0 .01 .05 .1 .5 1 5 10 50 100 REVERSE VOLTAGE,(V) 2012-12 WILLAS ELECTRONIC CORP.