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.
WEITRON
http://www.weitron.com.tw
B5817WS/B5819WS
SMALL SIGNAL
SCHOTTKY DIODES
1.0 AMPERES
20-40 VOLTS
1/3 03-Jun-05
SOD-323
1
2
1. CATHODE
2. ANODE
Maximum Ratings ( TA=25°C Unless otherwise noted)
Characteristic
Reverse Voltage
Peak Repetitive
Working Peak Reverse Voltage
DC Blocking Voltage
Typical thermal Resistance junction to
Ambient Note (1)
Symbol
VRRM
VRWM
VR
VR(RMS)
IFSM
PD
B5817WS B5819WS Unit
20 40 V
V
A
mW
A
Operating & Storage Temperature Range TJTSTG -55 to +150
Electrical Characteristics ( TA=25 °C Unless otherwise noted)
Characteristic Symbol
V(BR)R
B5817W B5819W Unit
40 V
Junction Capacitance f=1MHZ, VR=4VDC
Device Marking
Item Marking Eqivalent Circuit diagram
2
1
B5817WS
B5819WS
SJ
SL
625
200
Non-Repetitive Peak Forward Surge Current
8.3ms single half sine-wave superimpose on
rated load (JEDEC Method)
RMS Reverse Voltage
Power Dissipation
14 28
4.0
20
Reverse Current Note(2)
IRmA
IF=1A Tj=25°C
IF=3A Tj=25°C
VF0.45
0.75
0.60
0.90
V
2
1
Average Rectified Output Current
IFAV 1.0
°C/W
°C
Forward Voltage Note(2)
VR=20V, Tj=25°C
VR=40V, Tj=25°C
Cj 120 PF
Note: 1. Valid provited that leads are kept at ambient tememperature.
2. Pulse Test : Pulse width = 300µs, Duty Cycle ≤ 2%
WEITRON
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(2)
Minimum Reverse Breakdown Voltage
(IR=1mA)
R JA
1.0 -
-1.0
B5817WS/B5819WS
2/3 03-Jun-05
WEITRON
http://www.weitron.com.tw
0 25 50 75 100 125 150
TL, LEAD TEMPERATURE ( C)
FIG, 1 Forward Current Derating Curve
IO, AVERAGE RECITIFIED CURRENT (A)
VR.REVERSE VOLTAGE (V)
Fig, 3 Typ, Junction Capacitance vs. Reverse Voltage
0 5 10 15 20
1000
100
10
1.0
Cj , CAPACITANCE (pF)
VF, INSTANTANEOUS FORWARD VOLTAGE (V)
Fig, 2 Typical Forward Characterictics
B5819WS
B5817WS
0 0.2 0.4 0.6 0.8 1.0
10
1.0
0.1
0.01
IF, INSTANTNEOUS FWD CURRENT (A)
0
0.2
0.4
0.6
0.8
1.0
1.2
1.4
1.8
B5817WS/B5819WS
3/3 03-Jun-05
