
BAS521LP
Document number: DS32176 Rev. 5 - 2
2 of 4
www.diodes.com
April 2011
© Diodes Incorporated
BAS521LP
Maximum Ratings @T
A
= 25°C unless otherwise specified
Characteristic Symbol Value Unit
Repetitive Peak Reverse Voltage
V
RRM
325 V
Working Peak Reverse Voltage
DC Blocking Voltage
V
RWM
V
R
325 V
Forward Current (Note 4)
I
F
400 mA
Non-Repetitive Peak Forward Surge Current @ t = 1.0μs
I
FSM
8.0 A
Repetitive Peak Forward Current @ t=8.3ms (Note 4)
I
FRM
3.0 A
Thermal Characteristics
Characteristic Symbol Value Unit
Power Dissipation (Note 4)
P
D
400 mW
Thermal Resistance Junction to Ambient Air (Note 4)
R
JA
312
°C/W
Operating and Storage Temperature Range
T
J
, T
STG
-65 to +150
°C
Electrical Characteristics @T
A
= 25°C unless otherwise specified
Characteristic Symbol Min Max Unit Test Condition
Reverse Breakdown Voltage (Note 5)
V
BR
R
300
⎯
V
I
R
= 100μA
Forward Voltage
V
F
⎯
1.1 V
I
F
= 100mA
Reverse Current (Note 5)
I
R
⎯
⎯
⎯
50
150
100
nA
nA
μA
V
R
= 5V
V
R
= 250V
V
R
= 250V, T
J
= 150°C
Total Capacitance
C
T
⎯
5 pF
V
R
= 0, f = 1.0MHz
Reverse Recovery Time
t
rr
⎯
50 ns
I
F
= I
R
= 30mA,
I
rr
= 0.1 x I
R
, R
L
= 100Ω
Notes: 4. Part mounted on FR-4 board with recommended pad layout, which can be found on our website at http://www.diodes.com.
5. Short duration pulse test used to minimize self-heating effect.
0
125 175
300
100
200
0
T , AMBIENT TEMPERATURE ( C)
Fig. 1 Power Derating Curve
A
°
,
WE
DISSI
A
I
N (mW)
D
25
100
50 75
150
50
150
250
400
350
Note 4
0 0.2 0.4 0.6 0.8 1.0 1.2 1.4 1.6 1.8
V , INSTANTANEOUS FORWARD VOLTAGE (V)
Fig. 2 Typical Forward Characteristics
F
0.1
1
10
100
1,000
I, I
S
A
A
E
S
WA
D
E
(mA)
F
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