Low VF Surface Mount
Schottky Barrier Rectifiers
*Low Surface Mounted Applications
*Metal-Semiconductor Junction with Guardring
*Epitaxial Construction
*Very Low Forward Voltage Drop
*High Current Capability
*Plastic Material Has UL Flammability Classification 94V-0
*For Use in Low Voltage, High Frequency Inverters,
Free Wheeling, and Polarity Protection Applications
*Case : Molded Plastic
*Polarity :Indicated By Cathode Band
*Weight : 0.002 ounces, 0.064 grams
Features:
B140L
Mechanical Data
REVERSE VOLTAGE
40Volts
FORWARD CURRENT
1.0 Ampere
WEITRON
http://www.weitron.com.tw
SMA-1
SMA-1 Outline Dimension
unit:mm
A
C
B
E
H
J
H
4.40
4.80
2.40
2.80
0.30
0.30
E
3.80
4.20
H
1.00
1.00
J
1.50
1.70
A
B
C
SMA-1
Dim
Min
Max
Dimensions in inches
B140L
WE IT R ON
Maximum Ratings and Electrical Characteristics
Characteristics
B140L
Symbol
Unit
Maximum Recurrent Peak Reverse Voltage
Maximum RMS Voltage
Maximum DC Blocking Voltage
Maximum Average Forward
Rectified Current @T
C
=105 C
Peak Forward Surge Current,
8.3 ms Single Half Sine-Wave
Superimposed on Rated Load (JEDEC Method)
Maximum Instantaneous
Forward Voltage @
IF
=1.0A
Maximum DC Reverse Current @Tj=25 C
At Rated DC Blocking Voltage @Tj=100 C
Typical Junction Capacitance (Note 1)
Typical Thermal Resistance (Note 2)
Operating Temperature Range
Storage Temperature Range
V
V
V
A
A
V
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%.
@ T j=25 C
@ T j=100 C
V
RRM
V
RMS
V
DC
I
(AV)
I
FSM
V
F
I
R
C
J
R
AJC
T
J
T
STG
40
28
40
1.0
25
0.38
0.35
1.0
25
100
35
-55 to+125
-55 to+150
P
F
C/W
NOTES:1.Measured at 1.0MHz applied reverse voltage of 4.0V DC.
2.Thermal Resistance Junction to case.
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h t t p :
//
w w w . w e i t r o n . c o m . t w
F
B140L
WE IT R ON
PERCENT OF RATED PEAK REVERSE VOLTAGE, (%)
I
N
S
T
A
N
T
A
N
E
O
U
S
R
E
V
E
R
S
E
C
U
R
R
E
N
T
.
(
m
A
)
0
20
40
60
80
100
120
140
T
J
=25 C
T
J
=125 C
100
10
1.0
0.1
0.01
0.001
T
J
=100 C
FIG5.-TYPICAL REVERSE CHARACTERISTICS
FIG.3-TYPICAL FORWARD CHARACTERISTICS
INSTANTANEOUS FORWARD VOLTAGE, (VOLTS)
I
N
S
T
A
N
T
A
N
E
O
U
S
F
O
R
W
A
R
D
C
U
R
R
E
N
T
,
(
A
)
0
0.2
0.4
0.6
0.8
1.0
T
J
=25 C
PLUSEWIDTH 300us
10
1.0
0.1
REVERSE VOLTAGE, (VOLTS)
C
A
P
A
C
I
T
A
N
C
E
,
(
P
F
)
0.1
1.0
4.0
10.0
100
T
J
=25 C F=1MH
Z
1000
100
10
FIG4.-TYPICAL JUNCTION CAPACITANCE
FIG.2-MAXIMUM NON-REPETITIVE SURGE CURRENT
NUMBER OF CYCLES AT 60H
Z
1
2
5
10
20
50
100
25
20
15
10
5
0
P
E
A
K
F
O
R
W
A
R
D
S
U
R
G
E
C
U
R
R
E
N
T
,
A
M
P
E
R
E
S
Pulse Width 8.3ms
Single Half-Sine-Wave
(JEDEC METHOD)
FIG1.-FORWARD CURRENT DERATION CURVE
CASE TEMPERATURE C
20
40
60
80
100
120
140
A
V
E
R
A
G
E
F
O
R
W
A
R
D
C
U
R
R
E
N
T
A
M
P
E
R
E
S
1.25
1.00
0.75
0.50
0.25
0
SINGLE PHASE HALF WAVE 60Hz
RESISTIVE OR INDUCTIVE LOAD
WEITRON
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