Jan-30-2003
1
BAS21...
Silicon Switching Diode
For high-speed switching applications
High breakdown voltage
BAS21U
BAS21-03W
BAS21
3
1
2
1
D 1
2
3
4
5
6
D 2
D 3
1
2
Type
Package
Configuration
Marking
BAS21
BAS21U
BAS21-03W
SOT23
SC74
SOD323
single
parallel triple
single
JSs
JSs
D
Maximum Ratings at T
A
= 25C, unless otherwise specified
Parameter
Symbol
Value
Unit
Diode reverse voltage
V
R
200
V
Peak reverse voltage
V
RM
250
Forward current
I
F
250
mA
Peak forward current
I
FM
625
Surge forward current, t = 10 s
I
FS
4
A
Total power dissipation
BAS21, T
S
70C
BAS21-03W, T
S
124C
BAS21U, T
S
122C
P
tot
350
250
250
mW
Junction temperature
T
j
150
C
Storage temperature
T
stg
-65 ... 150
Jan-30-2003
2
BAS21...
Thermal Resistance
Parameter
Symbol
Value
Unit
Junction - soldering point
1)
BAS21
BAS21-03W
BAS21U
R
thJS
230
105
110
K/W
Electrical Characteristics at T
A
= 25C, unless otherwise specified
Parameter
Symbol
Values
Unit
min.
typ.
max.
DC Characteristics
Breakdown voltage
I
(BR)
= 100 A
V
(BR)
250
-
-
V
Reverse current
V
R
= 200 V
V
R
= 200 V, T
A
= 150 C
I
R
-
-
-
-
0.1
100
A
Forward voltage
I
F
= 100 mA
I
F
= 200 mA
V
F
-
-
-
-
1
1.25
V
AC Characteristics
Diode capacitance
V
R
= 0 V, f = 1 MHz
C
T
-
-
5
pF
Reverse recovery time
I
F
= 30 mA, I
R
= 30 mA, measured at I
R
= 3mA,
R
L
= 100
t
rr
-
-
50
ns
Test circuit for reverse recovery time
EHN00018
Oscillograph
F
D.U.T.
Puls generator: t
p
= 1s, D = 0.05
t
r
= 0.6ns, R
i
= 50
Oscillograph: R = 50
, t
r
= 0.35ns, C
1pF
1
For calculation of
R
thJA
please refer to Application Note Thermal Resistance
Jan-30-2003
3
BAS21...
Reverse current I
R
=
(T
A
)
V
R
= 200V
10
0
50
100
150
BAS 19...21
EHB00027
T
A
R
C
0
-2
5
5
5
max
typ.
A
10
-1
10
10
1
10
2
Forward Voltage V
F
=
(T
A
)
I
F
= Parameter
0.0
0
BAS 19...21
EHB00029
T
A
V
F
C
0.5
1.0
V
1.5
50
100
150
F
= 625 mA
mA
250
100 mA
10 mA
Forward current I
F
=
(V
F
)
0.0
0
EHB00028
BAS 19...21
V
F
F
100
200
300
400
500
600
700
mA
800
0.5
1.0
V
1.5
Forward current I
F
=
(T
S
)
BAS21-03W
0
15
30
45
60
75
90 105 120 C
150
T
S
0
50
100
150
200
mA
300
I
F
Jan-30-2003
4
BAS21...
Forward current I
F
=
(T
S
)
BAS21U
0
15
30
45
60
75
90 105 120 C
150
T
S
0
50
100
150
mA
250
I
F
Permissible Puls Load R
thJS
=
(t
p
)
BAS21
10
-6
10
-5
10
-4
10
-3
10
-2
10
0
s
t
P
-1
10
0
10
1
10
2
10
3
10
R
thJS
D = 0.5
0.2
0.1
0.05
0.02
0.01
0.005
0
Permissible Pulse Load
I
Fmax
/ I
FDC
=
(t
p
)
BAS21
10
-6
10
-5
10
-4
10
-3
10
-2
10
0
s
t
P
0
10
1
10
2
10
I
Fmax
/
I
FDC
D = 0
0.005
0.01
0.02
0.05
0.1
0.2
0.5
Permissible Puls Load R
thJS
=
(t
p
)
BAS21-03W
10
-6
10
-5
10
-4
10
-3
10
-2
10
0
s
t
P
-1
10
0
10
1
10
2
10
3
10
K/W
I
Fmax
/
I
FDC
D=0.5
0.2
0.1
0.05
0.02
0.01
0.005
0
Jan-30-2003
5
BAS21...
Permissible Pulse Load
I
Fmax
/ I
FDC
=
(t
p
)
BAS21-03W
10
-6
10
-5
10
-4
10
-3
10
-2
10
0
s
t
P
0
10
1
10
2
10
I
Fmax
/
I
FDC
D=0
0.005
0.01
0.02
0.05
0.1
0.2
0.5
Permissible Pulse Load
I
Fmax
/ I
FDC
=
(t
p
)
BAS21U
10
-6
10
-5
10
-4
10
-3
10
-2
10
0
s
t
P
0
10
1
10
2
10
I
Fmax
/
I
FDC
D=0
0.005
0.01
0.02
0.05
0.1
0.2
0.5
Permissible Puls Load R
thJS
=
(t
p
)
BAS21U
10
-6
10
-5
10
-4
10
-3
10
-2
10
0
s
t
P
-1
10
0
10
1
10
2
10
3
10
K/W
R
thJS
D=0.5
0.2
0.1
0.05
0.02
0.01
0.005
0
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