various types of capacitor

jb JVA Series-- Zinc Oxide Varistors

0 comments 2022-1-25 13:19:27 views

jb offers different type of passive component including capacitor and varistor. Not only capacitors, we can provide high quality for Varistor.
It is Zinc Oxide Varistors JVA Series, A varistor is an electronic component with an electrical resistance that varies with the applied voltage.

Its features are on below:
* Round Varistor element, leaded.
* Low leakage current.
* Excellent Voltage ratio, Wide Voltage & energy ratio.
* High performance in clamping voltage characteristics.
* Low standby power and no follow on current.

It can be used on Multi Meter, LED Driver, application in protecting power and signal level electrical circuits against dangerous voltage surges. If you have more questions, please contact jb sales directly.

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jb JVA - Zinc Oxide Varistors

0 comments 2022-1-7 10:10:5 views

We design and manufacture high quality Zinc Oxide Varistors Series. A varistor is an electronic component with an electrical resistance that varies with the applied voltage.
Varistors currently have widespread application in protecting power and signal level electrical circuits against dangerous voltage surges.
Zinc oxide varistors are electronic ceramic materials whose electrical behavior is dominated by grain-boundary interface states.

They exhibit a highly nonlinear current-voltage relation with a 5% change in voltage serving to increase the current flow an order of magnitude or more.

If you need this products, please mail us freely. We will be glad to offer you the price information and the most suitable products for you.

jb JVA - Zinc Oxide Varistors

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jb Summary of Capacitor Types

0 comments 2010-11-22 14:56:55 views

The table below gives and overview of the main characteristics of the various types of capacitor.

Capacitor types	Capacitance range	Accuracy	Temperature stability	Leakage	Comments
Electrolytic	0.1 µF - ~1 F	V poor	V poor	Poor	Polarised capacitor - widely used in power supplies for smoothing, and bypass where accuracy, etc is not required.
Ceramic	10 pF - 1 µF	Variable	Variable	Average	Exact performanceof capacitor depends to a large extent on the ceramic used.
Tantalum	0.1 µF - 500 µF	Poor	Poor	Poor	Polarised capacitor - very high capacitance density.
Silver mica	1 pF - 3000 pF	Good	Good	Good	Rather expensive and large - not widely used these days except when small value accurate capacitors are needed.
Polyester (Mylar)	0.001 µF - 50 µF	Good	Poor	Good	Inexpensive, and popular for non-demanding applications.
Polystyrene	10 pF - 1 µF	V good	Good	V good	High quality, often used in filters and the like where accuracy is needed.
Polycarbonate	100 pF - 20 µF	V good	V good	Good	Used in many high tolerance and hash environmental conditions. Supply now restricted.
Polypropylene	100pF - 50 µF	V good	Good	V good	High performance and low dielectric absorption.
Teflon	100 pF - 1 µF	V good	V v good	V v good	High performance - lowest dielectric absorption.
Glass	10 pF - 1000 pF	Good	Good	V good	Excellent for very harsh environments while offering good stability. Very expensive.
Porcelain	100 pF - 0.1 µF	Good	Good	Good	Good long term stability
Vacuum and air	1 pF - 10 000 pF				Often used as variable capacitors in transmitters as a result of their very high voltage capability.