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| B5817WS/B5819WS Surface Mount Schottky Barrier Diodes SMALL SIGNAL SCHOTTKY DIODES 1.0 AMPERES 20-40 VOLTS Features: *Low Forward Voltage *Very Small Conduction Losses *Schottky Barrier Diodes Encapsulated in a SOD-323 Package 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. Description: 1. CATHODE 2. ANODE 1 2 SOD-323 WEITRON http://www.weitron.com.tw 1/3 03-Jun-05 B5817WS/B5819WS Maximum Ratings ( Characteristic Peak Repetitive Reverse Voltage Working Peak Reverse Voltage DC Blocking Voltage Average Rectified Output Current RMS Reverse Voltage Non-Repetitive Peak Forward Surge Current 8.3ms single half sine-wave superimpose on rated load (JEDEC Method) Power Dissipation Typical thermal Resistance junction to Ambient Note (1) Operating & Storage Temperature Range TA=25C Unless otherwise noted) Symbol VRRM VRWM VR VR(RMS) IFAV IFSM PD R JA TJ TSTG B5817WS 20 14 1.0 4.0 200 625 B5819WS 40 28 Unit V V A A mW C/W C -55 to +150 Electrical Characteristics Characteristic Minimum Reverse Breakdown Voltage (IR=1mA) Forward Voltage Note(2) IF=1A Tj=25C IF=3A Tj=25C Reverse Current Note(2) VR=20V, Tj=25C VR=40V, Tj=25C ( TA=25 C Unless otherwise noted) Symbol (2) B5817W 20 B5819W 40 Unit V V(BR)R VF 0.45 0.75 0.60 0.90 V IR Cj 1.0 120 1.0 mA PF Junction Capacitance f=1MHZ, VR=4VDC Device Marking Item B5817WS B5819WS Marking SJ SL Eqivalent Circuit diagram 1 1 2 2 Note: 1. Valid provited that leads are kept at ambient tememperature. 2. Pulse Test : Pulse width = 300s, Duty Cycle 2% WEITRON http://www.weitron.com.tw 2/3 03-Jun-05 B5817WS/B5819WS 1.8 IO, AVERAGE RECITIFIED CURRENT (A) IF, INSTANTNEOUS FWD CURRENT (A) 10 B5817WS 1.4 1.2 1.0 0.8 0.6 0.4 0.2 0 0 25 50 75 100 125 150 B5819WS 1.0 0.1 0.01 0 0.2 0.4 0.6 0.8 1.0 TL, LEAD TEMPERATURE ( C) FIG, 1 Forward Current Derating Curve VF, INSTANTANEOUS FORWARD VOLTAGE (V) Fig, 2 Typical Forward Characterictics 1000 Cj , CAPACITANCE (pF) 100 10 1.0 0 5 10 15 20 VR.REVERSE VOLTAGE (V) Fig, 3 Typ, Junction Capacitance vs. Reverse Voltage WEITRON http://www.weitron.com.tw 3/3 03-Jun-05 |
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