Zowie Technology Corporation Schottky Barrier Diode Lead free product Halogen-free type 3 1 RB491DGH ANODE CATHODE 1 3 2 SOT-23 Features Small surface mounting type. Ultra low V F . (V F =0.40V Typ. at 1A) IF=1.0A guaranteed despite the size. z We declare that the material of product compliance with RoHS requirements. z We declare that the material of product is Halogen Free (Green Epoxy Compound). APPLICATIONS Low-power rectification For switching power supply !Absolute 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 Peak forward surge current ∗ IFSM 3 A Junction temperature Tj 125 ˚C Storage temperature Tstg −40∼+125 ˚C ∗ 60Hz for 1 !Electrical characteristics (Ta=25°C) Symbol Min. Typ. Max. Unit Forward voltage VF − − 0.45 V IF=1.0A Reverse current IR − − 200 µA VR=20V Parameter Conditions Note) ESD sensitive product handling required. REV. 0 Zowie Technology Corporation Zowie Technology Corporation RB491DGH !Electrical characteristic curves (Ta=25°C) Fig.2 Reversecharacteristics Fig.1 Forward characteristics 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 0.5 100 Ta=125˚C 10 75˚C 1 25˚C 100µ 10µ −25˚C 1µ 0.1µ 0 0.6 10 FORWARD VOLTAGE : VF (V) Fig.3 Capacitance between terminals characteristics FORWARD POWER DISSIPATION : PF (W) TERMINAL CAPACITANCE : CT (pF) f=1MHz 1000 100 10 5 10 15 20 25 30 30 40 50 60 70 Fig.4 Forward power dissipation characteristics 10000 1 0 20 REVERSE VOLTAGE : VR (V) 35 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 40 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) Fig.5 Derating curve (IO - Ta) 1.5 IF IO DC D=0.8 Tp T D=Tp/T VR=VRM /2 sine 1.0 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) REV. 0 Zowie Technology Corporation