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 sur face 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=25°C 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=25°C IF=3A Tj=25°C Reverse Current Note(2) VR=20V, Tj=25°C VR=40V, Tj=25°C
( 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 = 300µs, 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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