WSD520S_07

WSD520S/521S Surface Mount Schottky Barrier Diodes 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 SMALL SIGNAL SCHOTTKY DIODES 200m AMPERES 30 VOLTS 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 A C HE VM A Unit:mm D A 0 0.5 scale 1mm Eb p DIMENSIONS (mm are the original dimensions) UNIT mm max min A 0.7 0.5 bp 0.35 0.25 c 0.2 0.1 D 1.3 1.1 E 0.9 0.7 HE 1.7 1.5 V 0.15 Note1. The marking bar indicates the cathode. OUTLINE VERSION SOD-523 REFERENCES IEC JEDEC EI A J SC- 7 9 EUROPEAN PROJECTION ISSUE DATE 98 - 11- 2 5 WEITRON http://www.weitron.com.tw 1/4 Rev.C 15-Jan-07 WSD520S/521S Maximum Ratings (TA=25°C Unless otherwise noted) Characteristic Reverse Voltage Average Rectifier Forward Current Peak Forward Surge Current (1) Operating Junction Temperature Range Storage Temperature Range Symbol VR IF(AV) IFSM TJ Tstg Value 30 200 1.0 125 -40 to +125 Unit V mA A °C °C Electrical Characteristics (TA=25°C Unless otherwise noted) Characteristic Reverse Breakdown Voltage IR = 100µA Forward Voltage IF = 200mA Reverse Leakage VR = 10V NOTE: 1. 60HZ for 1 WSD520S WSD521S WSD520S WSD521S Symbol V(BR)R Min 30 Max 0.60 0.50 1.0 30 Unit V VF - V IR - µA Device Marking Item WSD520S WSD521S Marking B C Eqivalent Circuitdiagram 1 2 WEITRON http://www.weitron.com.tw 2/4 Rev.D 01-Oct-08 WSD520S/521S Electrical characteristic curves(Ta=25ºC) WSD520S WSD520S Ta=125oC 1 100m FORWARD CURRENT:IF(A) 1m 100 REVERSE CURRENT : I (A) R 10m 10 1 75oC Ta =1 2 -25 o C 1m 100 10 1 5C 75 o C 25 o C o 25oC -25oC 10n 1n 100n 0 0.1 0.2 0.3 0.4 0.5 0.6 0.7 0 10 20 30 FORWARD VOLTAGE : VF(V) REVERSE VOLTAGE: VR(V) Fig. 1 Forward characteristics Fig. 2 Reverse characteristics 100 CAPACITANCE BETWEEN TERMINALS : CT(pF) WSD520S f=1MHz 100 80 60 40 20 WSD520S 10 1 0 Io CURRENT (%) 10 20 30 0 0 25 50 75 100 o 125 REVERSE VOLTAGE : VR(V) AMBIENT TEMPERATURE : Ta ( C) Fig. 3 Capacitance between terminals characteristics Fig 4. Derating curve (mounting on glass epoxy PCBs) WEITRON http://www.weitron.com.tw 3/4 Rev.C 15-Jan-07 WSD520S/521S Electrical characteristic curves(Ta=25ºC) 1 100m FORWARD CURRENT : I F (A) WSD521S REVERSE CURRENT : I R (A) 10m 1m WSD521S Ta=125oC 75oC Ta =1 25 o C 75 o C 25 o C 10m 1m 100 10 1 -25 oC 25oC 100 10 1 -25 o C 100n 10n 0 0.1 0.2 0.3 0.4 0.5 0.6 0 10 20 Fig. 1 Forward characteristics FORWARD VOLTAGE:VF(V) REVERSE VOLTAGE:VR(V) Fig. 2 Reverse characteristics 100 CAPACITANCE BETWEEN TERMINALS : CT(pF) WSD521S Ta=25 f=1MHz oC WSD521S 100 Io CURRENT (%) 50 20 10 5 80 60 40 20 0 0 2 1 0 2 4 6 8 10 12 14 25 50 75 100 125 Fig. 3 Capacitance between terminals characteristics REVERSE VOLTAGE : VR(V) AMBIENT TEMPERATURE : Ta(oC) Fig. 4 Derating curve (mounting on glass epoxy PCBs) WEITRON http://www.weitron.com.tw 4/4 Rev.C 15-Jan-07