Surface Mount Schottky Barrier Diode
*Low Turn-on Voltage
*Fast Switching
*PN Junction Guard Ring for Transient and ESD Protection
*Case : SOT-346, Molded Plastic
*Terminals : Solderable per MIL-STD-202,Method 208
*Polarity : See Diagrams Below
*Weight : 0.008 grams (approx.)
*Mounting Position : Any
Features:
WSD400-WSD411
MECHANICAL DATA
SCHOTTKY BARRIER
RECTIFIERS
0.5AMPERES
20-40VOLTS
J
K
G
D
C
H
S
A
L
B
3
2
1
Top View
1
2
3
SC-59
A
B
C
D
G
H
J
K
L
S
2.70
1.30
1.00
0.35
1.70
0.00
0.10
0.20
1.25
2.25
3.10
1.70
1.30
0.50
2.30
0.10
0.26
0.60
1.65
3.00
Dim Min
Max
All Dimension in mm
SC-59
SC-59 Outline Dimension
WEITRON
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WSD400-WSD411
WE IT R ON
Item
Marking
Eqivalent Circuitdiagram
WSD411
05T
WSD400
05F
2
3
CATHODE
ANODE
2
3
CATHODE
ANODE
Device Marking
Maximum Ratings and Electrical Characteristics
Type Number
WSD411
WSD400
Unit
Maximum Recurrent Peak Reverse Voltage
Maximum RMS Voltage
Maximum DC Blocking Voltage
Maximum Average Forward Rectified Current
Peak Forward Surge Current, 8.3 ms Single Half
Sine-Wave Superimposed on Rated Load (JEDEC Method)
Maximum Instantaneous Forward Voltage at 0.5A
Maximum DC Reverse Current Ta=25 C
At Rated DC Blocking Voltage Ta=100 C
Operating Temperature Range Tj
Storage Temperature Range TSTG
20
14
20
40
28
40
V
V
V
0.5
3.00
0.45
0.53
0.1
4.0
-25.....+ 125
-50.....+ 125
A
A
V
mA
mA
C
C
Rating 25 C Ambient Temperature Unless Otherwise Specified.
Single Phase Half Wave, 60Hz , Resistive or Inductive Load.
For Capacitive Load, Derate Current by 20%.
WEITRON
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WSD400-WSD411
WE IT R ON
175
150
125
100
75
50
25
0 .01
.05
.1
.5
1
50
10
100
5
REVERSE VOLTAGE (V)
J
U
N
C
T
I
O
N
C
A
P
A
C
I
T
A
N
C
E
(
p
F
)
FIG .4 -TYPICAL JUNCTION CAPACITANCE
T=25 C
Pulse Width 300us
1% Duty Cycle
10
1.0
0.5
0.1
0.01
.001
.1
.2
.3
.4
.5
.6
.7
.8
FORWARE VOLTAGE.(V)
I
N
S
T
A
N
T
A
N
E
O
U
S
F
O
R
W
A
R
E
C
U
R
R
E
N
T
(
A
)
FIG.1-TYPICAL FORWARD
CHARACTERISTICS
W
SD
41
1
W
SD
40
0
0
20
40
60
80
100 120 140
PERCENTAGE RATED PEAK REVERSE VOLTAGE
R
E
V
E
R
S
E
L
E
A
K
A
G
E
C
U
R
R
E
N
T
(
m
A
)
100
10
1.0
.1
.01
Tj=75 C
Tj=25 C
FIG.3-TYPICAL REVERSE
CHARACTERISTICS
0.6
0.5
0.4
0.3
0.2
0.1
0
0
20
40
60
80
100
120
140
160
180
200
AMBIENT TEMPERATURE ( C)
A
V
E
R
A
G
E
F
O
R
W
A
R
D
C
U
R
R
E
N
T
(
A
)
Single Phase
Half Wave 60Hz
Resistive Or Inductive Load
FIG.2-TYPICAL FORWARD CURRENT DERATING CURVE
WEITRON
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