SX5817-SX5819
Surface Mount Schottky Barrier Rectifiers
VOLTAGE RANGE: 20 --- 40 V
CURRENT: 1.0 A
Features
Metal-Semiconductor junction with guard ring
Epitaxial construction
Low forward voltage drop,low switching losses
High surge capability
For use in low voltage,high frequency inverters free
wheeling,and polarity protection applications
The plastic material carries U/L recognition 94V-0
1.9± 0.1
SOD-123FL
Cathode Band
Top View
2.8
±
0.1
1.4± 0.15
0.10-0.30
0.6
±
0.25
3.7
±
0.2
xxxx
Mechanical Data
Case:JEDEC
SOD-123FL,molded
plastic
Polarity: Color band denotes cathode
Weight: 0.0008 ounces,0.22 grams
Mounting position: Any
Dimensions in millimeters
MAXIMUM RATINGS AND ELECTRICAL CHARACTERISTICS
Ratings at 25
ambient temperature unless otherwise specified.
Single phase,half wave,60 Hz,resistive or inductive load. For capacitive load,derate by 20%.
SX5817
Device marking code
Maximum recurrent peak reverse voltage
Maximum RMS voltage
Maximum DC blocking voltage
Maximum average forw ard rectified current
9.5mm lead length,
@T
A
=75
SX5818
S3
30
21
30
1.0
SX5819
S4
40
28
40
1.0
±
0.2
UNITS
V
V
V
A
S2
V
RRM
V
RMS
V
DC
I
F(AV)
20
14
20
Peak forw ard surge current
8.3ms single half-sine-w ave
superimposed on rated load
@T
J
=70
I
FSM
0.45
0.75
25.0
A
Maximum instantaneous forw ard voltage @ 1.0A
z
(Note 1)
@ 3.0A
Maximum reverse current
at rated DC blocking voltage
Typical junction capacitance
Typical thermal resistance
@T
A
=25
@T
A
=100
(Note2)
(Note3)
V
F
I
R
C
J
R
θ
JA
T
J
T
STG
0.55
0.875
1.0
10.0
110
50
- 55 ---- + 125
- 55 ---- + 150
0.60
0.90
V
mA
pF
／Ｗ
Operating junction temperature range
Storage temperature range
NOTE: 1. Pulse test : 300
s pulse width,1% duty cy cle.
2. Measured at 1.0MH
Z
and applied rev erse v oltage of 4.0V DC.
3.Thermal resistance junction to ambient
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SX5817-SX5819
Surface Mount Schottky Barrier Rectifiers
Ratings AND Charactieristic Curves
FIG.1 -- FORWARD DERATING CURVE
AVERAGE FORWARD RECTIFIED CURRENT
PEAK FORWARD SURGE CURRENT
AMPERES
FIG.2 -- PEAK FORWARD SURGE CURRENT
1.0
30
25
20
25
10
5
0
1
10
100
T
J
=T
J
MAX
8.3ms Single Half
Sine-Wave
0.75
AMPERES
0.5
0.25
Resistive or
Inductive Load
0.375"(9.5mm)Lead
Length
0
0
25
50
75
100
125
150
LEAD TEMPERATURE,
NUMBER OF CYCLES AT 60Hz
FIG.3 -- TYPICAL INSTANTANEOUS FORWARD
X -CHARACTERISTICS
INSTANTANEOUS FORWARD CURRENT
FIG.4 -- TYPICAL JUNCTION CAPACITANCE
20
400
CAPACITANCE, pF
10
SX5
81 7
SX
5819
T
J
=25℃
f=1.0MHz
Vsig=50mVp-p
AMPERES
100
1
SX5
81 8
T
J
= 25
P ulse w id th= 300
1 % D uty C yc le
s
10
0.1
1
10
100
.1
.1
.3
.5
.7
.9
1.1 1.3
1.5 1.7 1.9
2.1
INSTANTANEOUS FORWARD VOLTAGE, VOLTS
REVERSE VOLTAGE,VOLTS
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mail:lge@luguang.cn
Embedded System
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