BAS21TW
Document number: DS35389 Rev. 3 - 2
2 of 4
www.diodes.com
April 2013
? Diodes Incorporated
BAS21TW
NEW PRODUCT
Maximum Ratings
(@TA
= +25°C, unless otherwise specified.)
Characteristic Symbol Value Unit
Non-Repetitive Peak Reverse Voltage
VRM
250 V
Peak Repetitive Reverse Voltage
Working Peak Reverse Voltage
DC Blocking Voltage
VRRM
VRWM
VR
250 V
RMS Reverse Voltage
VR(RMS)
177 V
Forward Continuous Current (Note 5)
IFM
200 mA
Non-Repetitive Peak Forward Surge Current @ t = 50μs
@ t = 100μs
@ t = 10ms
IFSM
10
8
2
A
Thermal Characteristics
Characteristic Symbol Value Unit
Power Dissipation (Note 5)
PD
300 mW
Thermal Resistance Junction to Ambient Air (Note 5)
RθJA
417 °C/W
Operating and Storage Temperature Range
TJ, TSTG
-65 to +150 °C
Electrical Characteristics
(@TA
= +25°C, unless otherwise specified.)
Characteristic Symbol Min Max Unit Test Condition
Reverse Breakdown Voltage (Note 6)
V(BR)R
250
?
V
IR
= 100μA
Forward Voltage
VF
??
?
1.05?
1.25
V
IF
= 100mA
IF
= 200mA
Reverse Current (Note 6)
IR
?
100
100
nA
μA
VR
= 200V
VR
= 200V, T
J
= +150°C
Total Capacitance
CT
?
5 pF VR
= 6, f = 1.0MHz
Reverse Recovery Time
trr
?
50 ns VR
= 6V, I
F = 5mA
Notes: 5. Part mounted on FR-4 board with recommended pad layout, which can be found on our website at http://www.diodes.com/datasheets/ap02001.pdf.
6. Short duration pulse test used to minimize self-heating effect.
0
125 175150
300
100
200
0
T , AMBIENT TEMPERATURE ( C)A
°
Figure 1 Power Derating Curve, Total Package
P
,
P
O
WE
R
DISSI
P
A
T
I
O
N (mW)
D
25
100
50
75
50
150
250
Note 5
0 0.2 0.4 0.6 0.8 1.0 1.2 1.4 1.6 1.8
V , INSTANTANEOUS FORWARD VOLTAGE (V)F
Figure 2 Typical Forward Characteristics, Per Element
0.1
1
10
100
1,000
I , INS
T
AN
T
ANE
O
U
S
F
O
R
WA
R
D
C
U
R
R
EN
T
(mA)
F
T = 150°CA
T = -55°CA
T = 25°CA
T = 85°CA
T = 125°CA
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