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Surface Mount Schottky Barrier Diodes
Features:
*Low Forward Voltage
*Very Small Conduction Losses
*Schottky Barrier Diodes Encapsulated in a SOD-323 Package
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.
B5817WS/B5819WS
SMALL SIGNAL
SCHOTTKY DIODES
1.0 AMPERES
20-40 VOLTS
1. CATHODE
2. ANODE
1
2
SOD-323
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03-Jun-05

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B5817WS/B5819WS
Maximum Ratings ( TA=25°C Unless otherwise noted)
Characteristic
Peak Repetitive Reverse Voltage
Working Peak Reverse Voltage
DC Blocking Voltage
Average Rectified Output Current
RMS Reverse Voltage
Symbol
VRRM
VRWM
VR
VR(RMS)
IFAV
B5817WS
20
14
Non-Repetitive Peak Forward Surge Current
8.3ms single half sine-wave superimpose on
rated load (JEDEC Method)
IFSM
B5819WS
40
28
1.0
4.0
Power Dissipation
PD 200
Typical thermal Resistance junction to
Ambient Note (1)
Operating & Storage Temperature Range
R JA
TJ TSTG
625
-55 to +150
Unit
V
V
A
A
mW
°C/W
°C
Electrical Characteristics ( TA=25 °C Unless otherwise noted)
Characteristic
Minimum Reverse Breakdown Voltage(2)
(IR=1mA)
Symbol
V(BR)R
B5817W
20
Forward Voltage Note(2)
IF=1A Tj=25°C
IF=3A Tj=25°C
VF 0.45
0.75
Reverse Current Note(2)
VR=20V, Tj=25°C
VR=40V, Tj=25°C
IR
1.0
-
B5819W
40
0.60
0.90
-
1.0
Junction Capacitance f=1MHZ, VR=4VDC
Cj
120
Unit
V
V
mA
PF
Device Marking
Item
B5817WS
Marking
SJ
Eqivalent Circuit diagram
12
B5819WS
SL
Note: 1. Valid provited that leads are kept at ambient tememperature.
2. Pulse Test : Pulse width = 300µs, Duty Cycle 2%
1
2
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B5817WS/B5819WS
1.8
1.4
1.2
1.0
0.8
0.6
0.4
0.2
0
0
25 50 75 100 125
TL, LEAD TEMPERATURE ( C)
FIG, 1 Forward Current Derating Curve
150
10
B5817WS
1.0
B5819WS
0.1
0.01
0
0.2 0.4 0.6 0.8 1.0
VF, INSTANTANEOUS FORWARD VOLTAGE (V)
Fig, 2 Typical Forward Characterictics
1000
100
10
1.0
0
5 10
15 20
VR.REVERSE VOLTAGE (V)
Fig, 3 Typ, Junction Capacitance vs. Reverse Voltage
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