BAS521LP
Document number: DS32176 Rev. 5 - 2
2 of 4
www.diodes.com
April 2011
? Diodes Incorporated
BAS521LP
Maximum Ratings
@TA
= 25°C unless otherwise specified
Characteristic Symbol Value Unit
Repetitive Peak Reverse Voltage
VRRM
325
V
Working Peak Reverse Voltage
DC Blocking Voltage
VRWM
VR
325
V
Forward Current (Note 4)
IF
400
mA
Non-Repetitive Peak Forward Surge Current @ t = 1.0μs
IFSM
8.0 A
Repetitive Peak Forward Current @ t=8.3ms (Note 4)
IFRM
3.0 A
Thermal Characteristics
Characteristic Symbol Value Unit
Power Dissipation (Note 4)
PD
400 mW
Thermal Resistance Junction to Ambient Air (Note 4)
RθJA
312
°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 5)
V(BR)R
300
?
V
IR
= 100
μA
Forward Voltage
VF
?
1.1 V IF
= 100mA
Reverse Current (Note 5)
IR
?
?
?
50
150
100
nA
nA
μA
VR
= 5V
VR
= 250V
VR
= 250V, T
J
= 150
°C
Total Capacitance
CT
?
5 pF VR
= 0, f = 1.0MHz
Reverse Recovery Time
trr
?
50 ns IF
= I
R
= 30mA,
Irr = 0.1 x IR, RL
= 100
Ω
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 175150
300
100
200
0
T , AMBIENT TEMPERATURE ( C)A
°
Fig. 1 Power Derating Curve
P
,
P
O
WE
R
DISSI
P
A
T
I
O
N (mW)
D
25
100
50
75
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)F
Fig. 2 Typical Forward Characteristics
0.1
1
10
100
1,000
I, I
N
S
T
A
N
T
A
N
E
O
U
S
F
O
R
WA
R
D
C
U
R
R
E
N
T
(mA)
F
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