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Varistors(SMD)
Conformity to RoHS Directive
Countermeasure for Surge Voltage and Static Electricity
AVR Series AVR-M, AVRL Types
Varistors are voltage dependent nonlinear resistive elements with
a resistance that decreases rapidly when the voltage is over the
constant value.
Varistor is equivalent with Zener diode of two series connection.
Therefore, do not have polarity.
CURRENT vs. VOLTAGE CHARACTERISTICS
EQUIVALENT CIRCUIT
2 Zener Diodes
10 –1
10 –2 Zener diode
/Vz:6.8V
Positive direction
10 –3
10 –4
Chip varistor
/V 1mA :12V
A capacitance content
10 –5
– 18 – 14
– 10
– 6
– 2
2
6
10
14
18
–10 –5
–10 –4
–10 –3
Negative direction
–10 –2
–10 –1
Voltage(V)
THE EFFECT OF THE VARISTOR
WITHOUT VARISTOR
A malfunction and failure of electronic equipment
ESD, Surge voltage
WITH VARISTOR
Suppress abnormal voltage by inserting varistor in a circuit
ESD, Surge voltage
Power line
Signal line
IC
Power line
Signal line
IC
Insert a varistor between
a line and ground
: Chip varistor
? All specifications are subject to change without notice.
002-01 / 20130927 / e9c11_avr.fm
相关PDF资料
AYF218135 CONN FPC 02MM 81POS SMD R/A
AYF311515 CONN SOCKET FPC 0.3MM 15POS SMD
AYF321715 CONN FPC 17POS .3MM SMD
AYF332735 CONN FPC 27POS .3MM SMD
AYF338165 CONN FPC 81POS SMD Y3BW
AYF512415 CONN SOCKET FPC 0.5MM 24POS SMD
AYF522615 CONN SOCKET FPC 0.5MM 26POS SMD
AYF535065 CONN SOCKET FPC 0.5MM 50POS SMD
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