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VESD05A1B-02V
www.vishay.com
Vishay Semiconductors
BiAs-MODE (bidirectional asymmetrical protection mode)
With the VESD05A1B-02V one signal- or data-lines (L1) can be protected against voltage transients. With pin 1 connected to
ground and pin 2 connected to a signal- or data-line which has to be protected. As long as the voltage level on the data- or
signal-line is between 0 V (ground level) and the specified maximum reverse working voltage (V RWM ) the protection diode
between data line and ground offers a high isolation to the ground line. The protection device behaves like an open switch.
As soon as any positive transient voltage signal exceeds the break through voltage level of the protection diode, the diode
becomes conductive and shorts the transient current to ground. Now the protection device behaves like a closed switch. The
clamping voltage (V C ) is defined by the breakthrough voltage (V BR ) level plus the voltage drop at the series impedance
(resistance and inductance) of the protection device.
Any negative transient signal will be clamped accordingly. The negative transient current is flowing in the forward direction of
the protection diode. The low forward voltage (V F ) clamps the negative transient close to the ground level.
Due to the different clamping levels in forward and reverse direction the VESD05A1B-02V clamping behaviour is bidirectional
and asymmetrical (BiAs).
L1
BiAs
20280
Ground
ELECTRICAL CHARACTERISTICS
(T amb = 25 °C, unless otherwise specified)
PARAMETER
Protection paths
Reverse stand off voltage
Reverse voltage
Reverse current
Reverse breakdown voltage
Reverse clamping voltage
Forward clamping voltage
Capacitance
TEST CONDITIONS/REMARKS
Number of lines which can be protected
Max. reverse working voltage
at I R = 0.1 μA
at V R = 5 V
at I R = 1 mA
at I PP = 1 A
at I PP = I PPM = 3 A
at I PP = 0.2 A
at I PP = 1 A
at I PP = I PPM = 3 A
at V R = 0 V; f = 1 MHz
at V R = 2.5 V; f = 1 MHz
SYMBOL
N channel
V RWM
V R
I R
V BR
V C
V F
C D
MIN.
-
-
5
-
6
-
-
-
-
-
-
-
TYP.
-
-
-
0.01
6.8
8
8.9
0.95
1.3
1.9
19
12
MAX.
1
5
-
0.1
7.5
9.5
11
1.2
-
-
23
-
UNIT
lines
V
V
μA
V
V
V
V
V
V
pF
pF
Rev. 1.1, 20-Jun-12
2
Document Number: 83368
For technical questions, contact: ESDprotection@vishay.com
THIS DOCUMENT IS SUBJECT TO CHANGE WITHOUT NOTICE. THE PRODUCTS DESCRIBED HEREIN AND THIS DOCUMENT
ARE SUBJECT TO SPECIFIC DISCLAIMERS, SET FORTH AT www.vishay.com/doc?91000
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