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| LESHAN RADIO COMPANY, LTD. SCHOTTKY BARRIER DIODE LRB491T1 FEATURE Silicon epitaxial planar. Small plastic SMD package. High current capacity(IF=1.0A). Ultra low VF. (VF=0.40V Typ. at 1A) For switching power supply Applications. Pb-Free Package is available. SC-59 3 1 2 DEVICE MARKING AND ORDERING INFORMATION Device LRB491T1 LRB491T1G Marking 10T 10T (Pb-Free) Shipping 3000/Tape&Reel 3000/Tape&Reel 3 CATHODE 1 ANODE MAXIMUM RATINGS(Ta=25C) Parameter Symbol Limits Unit Peak reverse voltage DC reverse voltage DC forward current Peak forward surge current Junction temperature Storage temperature 60Hz for 1 VRM VR IF IFSM Tj Tstg 25 20 1.0 3 125 -40+125 V V A A C C ELECTRICAL CHARACTERISTICS(Ta=25C) Parameter Symbol Min. Typ. Max. Unit Conditions Forward voltage Reverse current VF IR - - - - 0.45 200 V A IF=1.0A VR=20V Note) ESD sensitive product handling required. LRB491T1-1/3 LESHAN RADIO COMPANY, LTD. LRB491T1 ELECTRICAL CHARACTERISTIC CURVES(Ta=25C) 10 REVERSE CURRENT : IR (mA) 1000 100 10 75C 1 100 10 1 0.1 0 25C FORWARD CURRENT : IF (A) 1 Ta=125C Ta= 12 5 C 75 C 25 C 100m 10m -25 C 1m -25C 0.1m 0 0.1 0.2 0.3 0.4 0.5 0.6 10 20 30 40 50 60 70 FORWARD VOLTAGE : VF (V) REVERSE VOLTAGE : VR (V) Fig.1 Forward characteristics 10000 f=1MHz TERMINAL CAPACITANCE : CT (pF) Fig.2 Reversecharacteristics 0.7 D=0.8 FORWARD POWER DISSIPATION : PF (W) DC 0.6 sine D=0.5 D=0.3 D=0.2 1000 0.5 0.4 D=0.05 D=0.1 100 0.3 IF 10 0.2 Tp IO T D=Tp/T Tj=Tj Max. 0.1 0 0 1 0 5 10 15 20 25 30 35 40 0.2 0.4 0.6 0.8 1.0 1.2 1.4 1.6 REVERSE VOLTAGE : VR (V) AVERAGE RECTIFIED FORWARD CURRENT : IO (A) Fig.3 Capacitance between terminals characteristics AVERAGE RECTIFIED FORWARD CURRENT : IO (A) 1.5 DC D=0.8 sine D=0.5 Tp Fig.4 Forward power dissipation characteristics IF IO 1.0 T D=Tp/T VR=VRM /2 D=0.3 D=0.2 0.5 D=0.1 D=0.05 0 0 25 50 75 100 125 AMBIENT TEMPERATURE : Ta (C) Fig.5 Derating curve (IO - Ta) LRB491T1-2/3 LESHAN RADIO COMPANY, LTD. LRB491T1 SC-59 C H K J A L S 3 2 1 D B G DIN MILLIMETERS MIN MAX MIN INCHES MAX A B C D G H J K L S 2.70 1.3 1.00 0.35 1.70 0.0130 0.1 0.20 1.25 2.50 3.10 1.70 1.30 0.50 2.10 0.100 0.26 0.60 1.65 3.00 0.1063 0.0512 0.0394 0.0138 0.0670 0.0005 0.0040 0.0079 0.0493 0.0985 0.1220 0.0669 0.0511 0.0196 0.0826 0.00040 0.0102 0.0236 0.0649 0.1181 LRB491T1-3/3 |
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