Three Terminals
SMD Switching Diodes
BAS21A/C/S
Three Terminals SMD Switching Diodes
Features
•
•
•
•
•
•
High reverse breakdown voltage
Fast switching speed
Low reverse leakage current
Surface mount package ideally suited for automatic insertion
Galvanically isolated dual configurations to save board space
RoHS compliant
SOT-23
Mechanical Data
Case:
Terminals:
Weight:
SOT-23, Plastic Case
Solderable per MIL-STD-750, Method 2026
Approx. 0.008 gram
Maximum Ratings
(T
Ambient
=25ºC unless noted otherwise)
Symbol
Description
Pinout Figure
Marking Code
BAS21A
5
21A
BAS21C
4
21C
250
250
0.2
4
250
357
-55 to +150
BAS21S
3
21S
V
V
A
A
mW
° C/W
°C
T
A
=25° C
t=1.0µs
Unit
Conditions
V
R
V
RRM
I
F(AV)
I
FSM
P
D
R
thJA
T
J,
T
STG
Reverse Voltage
Peak Reverse Voltage
Average Forward Rectified
Current
Non-repetitive Peak Forward
Surge Current
Power Dissipation
Thermal Resistance from
Junction to Ambient Air
Operating Junction and Storage
Temperature Range
TAITRON COMPONENTS INCORPORATED
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Tel: (800)-TAITRON
Fax: (800)-TAITFAX
(800)-824-8766
(800)-824-8329
(661)-257-6060
(661)-257-6415
Rev. A/AH
Page 1 of 6
Three Terminals SMD Switching
BAS21A/C/S
Electrical Characteristics
(T
Ambient
=25ºC unless noted otherwise)
Symbol
Description
Reverse Breakdown Voltage
Forward Voltage
Reverse Current
Total Capacitance
Reverse Recovery Time
Min.
-
-
-
-
-
Typ.
-
-
-
-
-
Max.
250
0.7
1.0
0.1
100
5.0
50
Unit
V
V
µA
µA
pF
nS
Conditions
I
R
=100µA
I
F
=1.0mA
I
F
=100mA
V
R
=200V
V
R
=200V, T
J
=150° C
V
R
=0V, f=1.0MHz
I
F
=I
R
=30mA,
R
L
=100Ω
V
(BR)
V
F
I
R
C
T
T
rr
Typical Characteristics Curves
Fig.1- Power Derating Curve
Fig.2- Typical Forward Characteristics
Power Dissipation (mW)
Ambient Temperature (°C)
Forward Current (mA)
Forward Voltage (V)
Rev. A/AH
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Page 2 of 6
Three Terminals SMD Switching
BAS21A/C/S
Fig.3-Leakage Current vs. Junction Temperature
Fig.4- Typical Junction Capacitance
Junction Temperature (°C)
Junction Capacitance (pF)
Leakage Current (µA)
Reverse Voltage (V)
Marking Information:
Rev. A/AH
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Page 3 of 6
Three Terminals SMD Switching
BAS21A/C/S
Dimensions in mm (inch)
SOT-23
Mounting Pad Layout in mm (inch)
Rev. A/AH
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Page 4 of 6
Three Terminals SMD Switching
BAS21A/C/S
Packing Information:
Carrier Tape Dimensions (in mm)
Product Type
SOT-23
A0
B0
See Note
K0
D
1.55±0.5
P0
4.0±0.1
F
3.5±0.5
P
4.0±0.1
P2
2.0±0.05
W
8.0+0.3/-0.1
E
1.75±0.1
T
0.38±0.1
D1
1.0±0.05
Note:
Symbol A0, B0, K0 are determined by the maximum dimensions of the component size.
The clearance between the component and the cavity must be within
0.05 mm (0.002’’) min. to 0.50 mm (0.02’’) max. for 8 mm tape.
Reel Dimensions (in mm)
A
178.0±2.0
C
13.0±0.5
G
8.4±2.0
T
14.4 max.
Rev. A/AH
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Page 5 of 6
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