BAS521LP
HIGH VOLTAGE SWITCHING DIODE
Features
• Fast Switching Speed: Maximum of 50 ns
• High Reverse Breakdown Voltage: 325V
• Low Leakage Current: Maximum of 50nA when V
Maximum of 150nA when V
• Ultra Small Plastic SMD Package: 1.0mm x 0.6mm x 0.5mm
• Lead, Halogen and Antimony Free, RoHS Compliant (Note 1)
• "Green" Device (Note 2)
= 250V at Room Temperature
R
= 5V or
R
X1-DFN1006-2
Bottom View
Mechanical Data
• Case: X1-DFN1006-2
• Case Material: Molded Plastic, “Green” Molding Compound.
UL Flammability Classification Rating 94V-0
• Moisture Sensitivity: Level 1 per J-STD-020
• Terminals: Finish - NiPdAu over Copper leadframe. Solderable
per MIL-STD-202, Method 208
• Weight: 0.0009 grams (approximate)
2
1
Device Schematic
Ordering Information (Note 3)
Part Number Case Packaging
BAS521LP-7 X1-DFN1006-2 3,000/Tape & Reel
BAS521LP-7B X1-DFN1006-2 10,000/Tape & Reel
Notes: 1. No purposefully added lead. Halogen and Antimony Free.
2. Diodes Inc.'s "Green" policy can be found on our website at http://www.diodes.com.
3. For packaging details, go to our website at http://www.diodes.com.
Marking Information
BAS521LP-7 BAS521LP-7B
Top View
Dot Denotes
Cathode Side
Bar Denotes
Cathode Side
9898
Top View
98 = Product Type Marking Code
BAS521LP
Document number: DS32176 Rev. 5 - 2
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April 2011
© Diodes Incorporated
θ
(BR)
P
P
OWER
P
TIO
NSTAN
TAN
O
US F
O
R
RD C
U
R
R
N
T
Maximum Ratings @T
= 25°C unless otherwise specified
A
Characteristic Symbol Value Unit
Repetitive Peak Reverse Voltage
Working Peak Reverse Voltage
DC Blocking Voltage
Forward Current (Note 4)
Non-Repetitive Peak Forward Surge Current @ t = 1.0μs
Repetitive Peak Forward Current @ t=8.3ms (Note 4)
Thermal Characteristics
Characteristic Symbol Value Unit
Power Dissipation (Note 4)
Thermal Resistance Junction to Ambient Air (Note 4)
Operating and Storage Temperature Range
BAS521LP
V
RRM
V
RWM
V
R
I
F
I
FSM
I
FRM
P
D
R
JA
, T
T
J
STG
325 V
325 V
400 mA
8.0 A
3.0 A
400 mW
312
-65 to +150
°C/W
°C
Electrical Characteristics @T
= 25°C unless otherwise specified
A
Characteristic Symbol Min Max Unit Test Condition
Reverse Breakdown Voltage (Note 5)
Forward Voltage
Reverse Current (Note 5)
Total Capacitance
Reverse Recovery Time
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.
V
R
V
F
I
R
C
T
t
rr
400
350
Note 4
300
⎯
⎯
⎯
⎯
⎯
⎯
⎯
1.1 V
50
150
100
5 pF
50 ns
1,000
(mA)
V
nA
nA
μA
E
300
100
N (mW)
250
A
WA
200
10
DISSI
150
,
100
D
E
1
IR = 100μA
IF = 100mA
= 5V
V
R
V
= 250V
R
= 250V, TJ = 150°C
V
R
VR = 0, f = 1.0MHz
= IR = 30mA,
I
F
= 0.1 x IR, RL = 100Ω
I
rr
50
0
0
25
50 75
T , AMBIENT TEMPERATURE ( C)
A
125 175
100
150
°
Fig. 1 Power Derating Curve
0.1
F
I, I
0 0.2 0.4 0.6 0.8 1.0 1.2 1.4 1.6 1.8
V , INSTANTANE OUS FORWARD VOLTAGE (V)
F
Fig. 2 Typical Forward Characteristics
BAS521LP
Document number: DS32176 Rev. 5 - 2
2 of 4
www.diodes.com
April 2011
© Diodes Incorporated
TANT
O
US R
R
CUR
RENT
BAS521LP
100,000
(nA)
10,000
SE
EVE
ANE
R
I, INS
T = 150ºC
A
T = 125ºC
A
1,000
T = 5ºCA8
100
T = 25ºC
10
A
T = - ºCA55
1
0.1
0 50 100 150 200 250 300
V , INSTANTANEOUS REVERSE VOLTAGE (V)
R
1.2
1.0
0.8
0.6
0.4
T
C , TOTAL CAPACITANCE (pF)
0.2
0
010203040
Fig. 3 Typical Reverse Characteristics
Package Outline Dimensions
A
X1-DFN1006-2
A1
D
Dim Min Max Typ
A 0.47 0.53 0.50
A1 0 0.05 0.03
b 0.45 0.55 0.50
D 0.95 1.075 1.00
E 0.55 0.675 0.60
E
R
b
e - - 0.40
L 0.20 0.30 0.25
R 0.05 0.15 0.10
All Dimensions in mm
L
e
Suggested Pad Layout
X
Y
BAS521LP
Document number: DS32176 Rev. 5 - 2
C
Dimensions Value (in mm)
Z 1.1
G 0.3
X 0.7
Y 0.4
G
Z
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C 0.7
April 2011
© Diodes Incorporated
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DIODES INCORPORATED MAKES NO WARRANTY OF ANY KIND, EXPRESS OR IMPLIED, WITH REGARDS TO THIS DOCUMENT,
INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
(AND THEIR EQUIVALENTS UNDER THE LAWS OF ANY JURISDICTION).
Diodes Incorporated and its subsidiaries reserve the right to make modifications, enhancements, improvements, corrections or other changes
without further notice to this document and any product described herein. Diodes Incorporated does not assume any liability arising out of the
application or use of this document or any product described herein; neither does Diodes Incorporated convey any license under its patent or
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all risks of such use and will agree to hold Diodes Incorporated and all the companies whose products are represented on Diodes Incorporated
website, harmless against all damages.
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Should Customers purchase or use Diodes Incorporated products for any unintended or unauthorize d application, Customers shall indemnify and
hold Diodes Incorporated and its representatives harmless against all claims, damages, expenses, and attorney fees arising out of, directly or
indirectly, any claim of personal injury or death associated with such unintended or unauthorized application.
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LIFE SUPPORT
Diodes Incorporated products are specifically not authorized for use as critical components in life support devices or systems without the express
written approval of the Chief Executive Officer of Diodes Incorporated. As used herein:
A. Life support devices or systems are devices or systems which:
1. are intended to implant into the body, or
2. support or sustain life and whose failure to perform when properly used in accordance with instructions for use provided in the
labeling can be reasonably expected to result in significant injury to the user.
B. A critical component is any component in a life support device or system whose failure to perform can be reasonably expected to cause the
failure of the life support device or to affect its safety or effectiveness.
Customers represent that they have all necessary expertise in the safety and regulatory ramifications of their life support devices or systems, and
acknowledge and agree that they are solely responsible for all legal, regulatory and safety-related requirements concerning their products and any
use of Diodes Incorporated products in such safety-critical, life support devices or systems, notwithstanding any devices- or systems-related
information or support that may be provided by Diodes Incorporated. Further, Customers must fully indemnify Diodes Incorporated and its
representatives against any damages arising out of the use of Diodes Incorporated products in such safety-critical, life support devices or systems.
Copyright © 2011, Diodes Incorporated
www.diodes.com
BAS521LP
BAS521LP
Document number: DS32176 Rev. 5 - 2
4 of 4
www.diodes.com
April 2011
© Diodes Incorporated
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