WSD520S/521S Surface Mount Schottky Barrier Diodes SMALL SIGNAL SCHOTTKY DIODES 200m AMPERES 30 VOLTS P b Lead(Pb)-Free Feature: *Extrmely High Switching Speed. *Low Forward Voltage and Low Reverse Current. *High Reliability. *Schottky Barrier Diodes Encapsulated in a SOD-523 Package 1 2 Description: These schottky barrier diodes are designed for high speed switching applications circuit protection, and voltage clamping, Extremely low forward voltage reduces conduction loss, Miniature surface mount package is excellent for hand held and portable applications where space is limited. SOD-523 SOD-523 Outline Dimensions Unit:mm A C HE V M A D 0 A 0.5 1mm scale E b p DIMENSIONS (mm are the original dimensions) UNIT mm max min A bp c D E HE V 0.7 0.5 0.35 0.25 0.2 0.1 1.3 1.1 0.9 0.7 1.7 1.5 0.15 Note1. The marking bar indicates the cathode. OUTLINE VERSION SOD-523 WEITRON http://www.weitron.com.tw REFERENCES IEC JEDEC EIAJ SC-79 1/4 EUROPEAN PROJECTION ISSUE DATE 98-11-25 Rev.C 15-Jan-07 WSD520S/521S Maximum Ratings (TA=25°C Unless otherwise noted) Characteristic Symbol Value Unit VR 30 V Average Rectifier Forward Current IF(AV) 200 mA Peak Forward Surge Current (1) IFSM 1.0 A TJ 125 °C Tstg -40 to +125 °C Reverse Voltage Operating Junction Temperature Range Storage Temperature Range Electrical Characteristics (TA=25°C Unless otherwise noted) Characteristic Symbol Min Max Unit V(BR)R 30 - V WSD520S WSD521S VF - 0.60 0.50 V WSD520S WSD521S IR - 1.0 30 µA Reverse Breakdown Voltage IR = 100µA Forward Voltage IF = 200mA Reverse Leakage VR = 10V NOTE: 1. 60HZ for 1 Device Marking Item Marking WSD520S B WSD521S C WEITRON http://www.weitron.com.tw Eqivalent Circuitdiagram 1 2/4 2 Rev.D 01-Oct-08 WSD520S/521S Electrical characteristic curves(Ta=25ºC) WSD520S 1 REVERSE CURRENT : I (A) R -25 o C o 5C 75 o C 25 o C Ta =1 2 FORWARD CURRENT:IF(A) 10m 10 75oC 1 25oC 100n 100 10 1 Ta=125oC 100 100m 1m WSD520S 1m 0 0.1 0.2 0.3 0.4 0.5 0.6 -25oC 10n 1n 0.7 0 10 Fig. 1 Forward characteristics Fig. 2 Reverse characteristics WSD520S WSD520S f=1MHz 100 Io CURRENT (%) CAPACITANCE BETWEEN TERMINALS : CT(pF) 30 REVERSE VOLTAGE: VR(V) FORWARD VOLTAGE : VF(V) 100 20 10 80 60 40 20 1 0 10 20 0 0 30 WEITRON 50 75 100 125 AMBIENT TEMPERATURE : Ta ( C) Fig. 3 Capacitance between terminals characteristics http://www.weitron.com.tw 25 o REVERSE VOLTAGE : VR(V) 3/4 Fig 4. Derating curve (mounting on glass epoxy PCBs) Rev.C 15-Jan-07 WSD520S/521S Electrical characteristic curves(Ta=25ºC) WSD521S 1 WSD521S 10m Ta=125oC REVERSE CURRENT : I R (A) 10m -25 o C 1m 100 75oC 25oC 10 1 -25 oC 100n 10 1 1m 100 Ta =1 25 o C 75 o C 25 o C FORWARD CURRENT : I F (A) 100m 0 0.1 0.2 0.3 0.4 0.5 10n 0.6 0 FORWARD VOLTAGE:VF(V) WSD521S 100 20 Fig. 2 Reverse characteristics Fig. 1 Forward characteristics WSD521S oC Ta=25 f=1MHz 50 100 Io CURRENT (%) CAPACITANCE BETWEEN TERMINALS : CT(pF) 10 REVERSE VOLTAGE:VR(V) 20 10 5 80 60 40 20 2 1 0 2 4 6 8 10 12 0 0 14 REVERSE VOLTAGE : VR(V) http://www.weitron.com.tw 50 75 100 125 AMBIENT TEMPERATURE : Ta(oC) Fig. 3 Capacitance between terminals characteristics WEITRON 25 Fig. 4 Derating curve (mounting on glass epoxy PCBs) 4/4 Rev.C 15-Jan-07