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PDF ( 数据手册 , 数据表 ) PVR-14D471K

零件编号 PVR-14D471K
描述 Pan Overseas Zinc Oxide Varistors
制造商 ETC
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PVR-14D471K 数据手册, 描述, 功能
Pan Overseas Zinc Oxide Varistors
PVR - ZINC OXIDE VARISTORS
Introduction
Zinc Oxide Varistor is a non-linear resistance device, whose voltage and current relationship vary according to the
Law of Powers. When high Voltage transients or surges produced by induced lightning, switching or electrical noise,
the varistor will switch from the rest stage to the protective stage. It is extremely high resistance value will change
to very low and causes short circuit, allows large currents to go through. Thus the high voltage transients or surges
can be suppressed to a safe level. This non-linear exponent characteristic with board application range is designed
to protect various kinds of electronic devices and semiconductor elements.
Features
Low leakage current.
Excellent voltage ratio.
Fast respond to the rapidly rising surge voltage.
High performance in clamping voltage characteristics.
High performance in surge current withstanding capability.
Applications
Transistor, diode, IC, Thyristor, and triac semiconductor protection.
Surge protection in consumer electronics.
Surge protection in industrial electronics.
Surge protection in communication, measuring, and controller electronics.
Surge protection in home electronic appliances and gas/petroleum appliances.
Part Number Code
P V R - 14 D 201 K
B
Pan Overseas
Zinc Varistor
Part Diameter
5 5mm
7 7mm
10 10mm
14 14mm
20 20mm
Disc Type
Tolerance
K:±10%
L:±15%
Varistor Voltage
The first two digits are significant figures and the
third digit denotes the numbers of zeros.
Packing Form
B: Bulk
T: Taping Ammo
R: Taping Reel
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PVR-14D471K pdf, 数据表
Pan Overseas Zinc Oxide Varistors
Electrical Performance Characteristics
Characteristics
Test Method
Standard test condition
Environmental conditions under which every measuring is done
without doubt on the measuring results. Unless specified, the
temperature, and relative humidity should be 5 to 35 and 45 to
85% respectively.
Specifications
Varistor voltage
The varistor voltage is measured with an impressed current of 1mA
(exception, 5Φ:0.1mA) and serves to characterize each varistor
type.
The maximum sinusoidal RMS voltage or maximum DC voltage that
Maximum operating voltage can be applied continuously in the specified environmental
temperature range.
Maximum
clamping
voltage
Maximum clamping voltage is the maximum voltage VP
terminals with the specified standard impulse current IP
between two
(8/20µS).
Withstanding
surge
current
The
with
maximum current within the varistor voltage change of ±10%
the standard impulse current (8/20µS) applied one or two times.
To meet the
specified value
Energy
Rated power
Capacitance
The maximum energy within the varistor voltage change of±10%
when one impulse of 10/1000µs m-sec is applied.
The maximum power that can be applied within the specified
ambient temperature.
The capacitance of varistor is the typical value measured at 1 KHz,
1Vrms max, OV bias and 25±2 .
Temperature Coefficient of
varistor Voltage
(VC at 85
- VC at 25 ) / (VC at 25 ) * 1 / 60 * 100 (%/ )
-0.05%/ max.
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