DS30100 Rev. 7 - 2
1 of 2
BAT42WS / BAT43WS
BAT42WS / BAT43WS
SURFACE MOUNT SCHOTTKY BARRIER DIODE
Features
Low Forward Voltage Drop
Fast Switching
Ultra-Small Surface Mount Package
Case: SOD-323, Plastic
Case material - UL Flammability Rating
Classification 94V-0
Moisture sensitivity: Level 1 per J-STD-020A
Leads: Solderable per MIL-STD-202,
Method 208
BAT42WS Marking: S7
BAT43WS Marking: S8
Polarity: Cathode Band
Weight: 0.004 grams (approx.)
Mechanical Data
A
B
C
D
E
G
a
H
J
Characteristic
Symbol
BAT42WS / BAT43WS
Unit
Peak Repetitive Reverse Voltage
Working Peak Reverse Voltage
DC Blocking Voltage
V
RRM
V
RWM
V
R
30
V
RMS Reverse Voltage
V
R(RMS)
21
V
Forward Continuous Current
I
FM
200
mA
Average Rectified Output Current
I
O
100
mA
Repetitive Peak Forward Current
@ t < 1.0s
I
FRM
500
mA
Non-Repetitive Peak Forward Surge Current @ t < 10ms
I
FSM
4.0
A
Power Dissipation (Note 1)
P
d
200
mW
Thermal Resistance Junction to Ambient Air (Note 1)
R
qJA
625
C/W
Operating and Storage Temperature Range
T
j
, T
STG
-55 to +125
C
Maximum Ratings
@ T
A
= 25
C unless otherwise specified
Characteristic
Symbol
Min
Max
Unit
Test Condition
Reverse Breakdown Voltage (Note 2)
V
(BR)R
30
V
I
R
= 100
mA
Forward Voltage Drop (Note 2)
Both Types
BAT42WS
BAT42WS
BAT43WS
BAT43WS
V
FM
0.26
1.0
0.40
0.65
0.33
0.45
V
I
F
= 200mA
I
F
= 10mA
I
F
= 50mA
I
F
= 2.0mA
I
F
= 15mA
Peak Reverse Current (Note 2)
I
RM
500
100
nA
mA
V
R
= 25V
V
R
= 25V, T
j
= 100
C
Total Capacitance
C
T
10
pF
V
R
= 1.0, f = 1.0MHz
Reverse Recovery Time
t
rr
5.0
ns
I
F
= I
R
= 10mA,
I
rr
= 0.1 x I
R
, R
L
= 100
W
Electrical Characteristics
@ T
A
= 25
C unless otherwise specified
Notes:
1. Part mounted on FR4 PC Board with recommended pad layout, which can be found on our website
at http://www.diodes.com/datasheets/ap02001.pdf.
2. Short duration test pulse used to minimize self-heating effect.
SOD-323
Dim
Min
Max
A
2.30
2.70
B
1.60
1.80
C
1.20
1.40
D
1.05 Typical
E
0.25
0.35
G
0.20
0.40
H
0.10
0.15
J
0.05 Typical
a
0
8
All Dimensions in mm
DS30100 Rev. 7 - 2
2 of 2
BAT42WS / BAT43WS
10
0
20
30
40
I
,
INST
ANT
ANEOUS
REVERSE
CURRENT
(
A
)
R
V , INSTANTANEOUS REVERSE VOLTAGE (V)
Fig. 3 Typical Reverse Characteristics
R
T = 125C
A
T = 75C
A
T = 25C
A
100
10
1.0
0.1
0.01
1000
0.1
1.0
10
100
0
200
400
600
800
1.0
I
,
INST
ANT
ANEOUS
FOR
W
ARD
CURRENT
(mA
)
F
V , INSTANTANEOUS FORWARD VOLTAGE (V)
Fig. 2 Typical Forward Characteristics
F
T = -25C
A
T = 25C
A
T = 125C
A
T = 75C
A
0
0
20
40
25
50
75
100
125
150
I
A
VERAGE
RECTIFIED
CURRENT
(mA)
O,
T , AMBIENT TEMPERATURE ( C)
Fig. 1 Forward Current Derating Curve
A
60
80
100
T = 125 C
j
1.0
10
100
0
15
10
25
30
35
20
40
C
,
T
O
T
A
L
CAP
ACIT
ANCE
(pF)
T
V , REVERSE VOLTAGE (V)
Fig. 4 Total Capacitance vs. Reverse Voltage
R
5.0
T = 25 C
j
f = 1MHz
Notes:
2. For Packaging Details, go to our website at http://www.diodes.com/datasheets/ap02007.pdf.
Device
Packaging
Shipping
BAT42WS-7/BAT43WS-7
SOD-323
3000/Tape & Reel
Ordering Information
(Note 2)
Marking Information
XX
XX = Product Type Marking Code
See Sheet 1
PDF 
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