B0520LWS / B0540WS Surface Mount Schottky Barrier Diode P b Lead(Pb)-Free Features: SCHOTTKY DIODE 500 mAMPERS 20-40 VOLTS * Low Forward Voltage Drop * Guard Ring Construction forTransient Protection * High Conductance Mechanical Data: * Case: SOD-323 * Plastic Material –UL Recognition Flammability Classification 94V-O * Leads: Solderable per MIL-STD-202, Method 208 * Polarity: Cathode Band * Weight: 0.004 grams(approx.) SOD-323 SOD-323 Outline Demensions Unit:mm Dim A B C D E H J K MILLMETERS Min Max 1.60 1.80 1.15 1.35 0.80 1.00 0.25 0.40 0.15 REF 0.00 0.10 0.089 0.177 2.30 2.70 PIN 1.CATHODE 2.ANODE WEITRON http://www.weitron.com.tw 1/3 Rev.A 23-Jun-09 B0520LWS / B0540WS Maximum Ratings ( TA=25°C Unless otherwise noted) Characteristic Symbol B0520LWS B0540WS Unit Peak Repetitive Reverse Voltage Working Peak Reverse Voltage DC Blocking Voltage VRRM VRWM VR 20 40 V RMS Reverse Voltage VR(RMS) 14 28 V IO 500 mA Peak Forward Surge Current IFSM 5.5 A Power Dissipation Pd 410 mW RθJA 244 °C/W TJ +125 °C Storage Temperature Range TSTG -65 to +125 °C Voltage Rate of Change dv/dt 1000 V/µs Average Rec Current Thermal Resistance junction to Ambient Operating Temperature Range Electrical Characteristics (TA=25˚C Unless otherwise noted) Characteristic Reverse Breakdown Voltage IR=250µA IR=130µA IR=20µA Forward Voltage IF=0.1A IF=0.5A IF=1.0A Symbol B0520LWS B0540WS Unit V(BR)R 20 - 40 V VF 0.3 0.385 - 0.510 0.62 V 75 250 - 10 20 Reverse Current VR=10V VR=15V VR=20V VR=30V VR=40V IR Capacitance between terminals VR=1.0V, f=1.0MHz CT 170 pF Reverse Recovery Time IF=IR=10mA Irr=0.1 I I IR , RL =100W trr 4.0 ns µA Device Marking Item Marking B0520LWS SD B0540WS SF WEITRON http://www.weitron.com.tw Eqivalent Circuit diagram 1 2/3 2 Rev.A 23-Jun-09 B0520LWS / B0540WS Electrical Characteristic curves(TA=25˚C) 10 IF, INSTANTANEOUS FWD CURRENT (A) IO, AVERAGE RECTIFIED CURRENT (A) 1.0 0.75 0.50 0.25 0 B0540WS 1.0 0.1 B0520LWS 0.01 0 25 50 75 100 125 150 0 0.2 0.4 0.6 0.8 1.0 VF, INSTANTANEOUS FORWARD VOLTAGE (V) Fig. 2 Typical Forward Characteristics TL, LEAD TEMPERATURE (°C) Fig. 1 Forward Current Derating Curve 1000 CT, TOTAL CAPACITANCE (pF) f = 1MHz 100 10 1.0 0 5 10 15 20 VR, REVERSE VOLTAGE (V) Fig. 3 Typ. Total Capacitance vs Reverse Voltage WEITRON http://www.weitron.com.tw 3/3 Rev.A 23-Jun-09