LESHAN RADIO COMPANY, LTD. SCHOTTKY BARRIER DIODE LRB491T1 FEATURE ƽSilicon epitaxial planar. 3 ƽSmall plastic SMD package. ƽHigh current capacity(IF=1.0A). 1 ƽUltra low VF. (VF=0.40V Typ. at 1A) 2 ƽFor switching power supply Applications. ƽPb-Free Package is available. SC-59 DEVICE MARKING AND ORDERING INFORMATION Device Marking Shipping LRB491T1 10T 3000/Tape&Reel 10T (Pb-Free) 3000/Tape&Reel LRB491T1G 3 CATHODE 1 ANODE MAXIMUM RATINGS(Ta=25°C) Symbol Limits Unit Peak reverse voltage Parameter VRM 25 V DC reverse voltage VR 20 V DC forward current IF 1.0 A IFSM 3 A 125 ˚C Peak forward surge current ∗ Junction temperature Tj Storage temperature Tstg −40∼+125 ˚C ∗ 60Hz for 1 ELECTRICAL CHARACTERISTICS(Ta=25°C) Symbol Min. Typ. Max. Forward voltage VF − − 0.45 V IF=1.0A Reverse current IR − − 200 µA VR=20V Parameter Unit Conditions Note) ESD sensitive product handling required. LRB491T1-1/3 LESHAN RADIO COMPANY, LTD. LRB491T1 ELECTRICAL CHARACTERISTIC CURVES(Ta=25°C) 1000 REVERSE CURRENT : IR (mA) 10m −25 100m ˚C 1 Ta= 12 5˚ C 75 ˚C 25 ˚C FORWARD CURRENT : IF (A) 10 1m 0.1m 0 0.1 0.2 0.3 0.4 0.5 25˚C 100µ 10µ −25˚C 1µ 10 20 30 40 50 60 70 REVERSE VOLTAGE : VR (V) Fig.1 Forward characteristics Fig.2 Reversecharacteristics FORWARD POWER DISSIPATION : PF (W) TERMINAL CAPACITANCE : CT (pF) 75˚C 1 FORWARD VOLTAGE : VF (V) f=1MHz 1000 100 10 1 0 5 10 15 20 25 30 35 40 Fig.3 Capacitance between terminals characteristics 1.5 0.7 DC D=0.8 0.6 D=0.5 sine D=0.3 0.5 D=0.2 D=0.1 0.4 D=0.05 0.3 IF 0.2 IO Tp T D=Tp/T Tj=Tj Max. 0.1 0 0 0.2 0.4 0.6 0.8 1.0 1.2 1.4 1.6 AVERAGE RECTIFIED FORWARD CURRENT : IO (A) REVERSE VOLTAGE : VR (V) AVERAGE RECTIFIED FORWARD CURRENT : IO (A) Ta=125˚C 10 0.1µ 0 0.6 10000 Fig.4 Forward power dissipation characteristics IF IO DC D=0.8 Tp T D=Tp/T VR=VRM /2 sine 1.0 100 D=0.5 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 J C K H A L 3 S 2 B 1 D G DIN A B C D G H J K L S MILLIMETERS INCHES MIN MAX MIN MAX 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