varistors - 2008/2009
40Pages

Terminology Term Maximum continuous sinusoidal AC voltage (< 5% total harmonic distortion) which may be applied to the component under continuous operating conditions at 25 °C Supply Voltage The voltage by which the system is designated and to which certain operating characteristics of the system are referred; Vrms = 1,1 x V Leakage Current The current passing through the varistor at Vdc and at 25 °C or at any other specified temperature Varistor Voltage Voltage across the varistor measured at a given reference current In Reference Current Clamping Voltage Protection Level The peak voltage...

Contents: Page Ordering information and Marking 4 ZV Series - Low Voltage Varistors 5 Device Ratings and Characteristics 6 AV Series - Automotive Varistors 7 Device Ratings and Characteristics 8 CV Series - Medium Voltage Disc Varistors 9 Device Ratings and Characteristics 10 CV+ Series - Extended Medium Voltage Disc Varistors 12 Device Ratings and Characteristics 13 SV Series - Special medium Voltage Varistors 15 Device Ratings and Characteristics 16 Full Custom Parameter Design Varistors 18 Protection Level and Pulse Rating Characteristics 19 Protection Level and Pulse Rating Curves for...

Series Name Series Name Series Name Series Name 20 - Vrms A - the first letter of Series Name AV 003 - WLD Code : 003 Varistor Marking Packaging : R = Reel, A = Ammo Pack, B = Bulk Lead Style : 1 = straight, 5 = crimped Special requirements WLD - Load Dump Energy Code : 006 = 6 J Size - 60, 80, 90, 110 : 80 = 8 mm Lead spacing Code : 2 = 5 mm, 3 = 7,5 mm Maximum Continuous Working Voltage - Vrms Series Name Packaging : R = Reel, A = Ammo Pack, B = Bulk Lead Style : 1 = straight, 5 = crimped Special requirements Series Name Maximum Continuous Working Voltage - Vrms Ordering information 14 -...

LOW VOLTAGE LEADED STYLE VARISTORS ZV Series of low voltage varistors is designed to protect sensitive electronics devices against high voltage and current surges in the low voltage region. They offer excellent transient energy absorption due to improved energy volume distribution and power dissipation. Low voltage varistors cover wide DC operating voltage range • Broad range of current and energy handling • + 85 °C continuous operating temperature • Dimensional and weight savings on the board. • Available in tape and reel for automatic insertion. • Lead free components. • Suppression of...

Device Ratings and Characteristics

AUTOMOTIVE VARISTORS Almost all electronic systems in an automobile, e.g. anti-block brake system, direct ignition system, airbag control system, wiper motors, etc. are susceptible to damage from destructive voltage transients. AV Series of leaded automotive varistors includes both multilayer-varistor and single layer disc components upon request. Automotive Varistors are intended for WLD applications typically requiring up to 50J of energy, and disc automotive varistors for WLD applications requiring higher than 50 J of energy. Automotive varistors offer excellent transient energy...

MEDIUM VOLTAGE DISC VARISTORS CV Series of transient surge suppressors are disc shaped varistors that can be operated continuously in low and medium voltage circuits of electronic systems as well as across AC power lines. Due to their radial lead construction these components require very little mounting space. They are available in five model sizes : 5 mm, 7 mm, 10 mm, 14 mm and 20 mm and feature a wide AC operating voltage ranging • + 85 °C continuous operating temperature. • Available in tape and reel for automatic pick and place. . UL1414 & CSA C22.2 File El63318, Across-The-Line...

VARICON Device Ratings and Characteristics

VARICON Device Ratings and Characteristics

VARICON Extended MEDIUM VOLTAGE DISC VARISTORS CV Series of transient surge suppressors is the extended version of CV Series of disc shaped + varistors. CV Series consist of 7mm, 10 mm, 14 mm, 20 mm and 23 mm sized varistors of extremely high current and energy capabilities. They provide increased level of protection necessary for the transients expected in telecommunication and AC power networks. AC operating voltage of these varistors ranges from 60 V to 550 V. Absolute Maximum Ratings Continuous : Steady State Applied Voltage : DC Voltage Range (Vdc) AC Volt age Range (Vrms) Transient :...

Device Ratings and Characteristics

Device Ratings and Characteristics

SPECIAL MEDIUM VOLTAGE VARISTORS SV SERIES Description SV Series is a series of lead style epoxy coated square or rectangular shaped varistors with AC operating voltage ranging from 60 V to 550 V. There are two branches of these varistors. The first consists of square shaped varistors with extremely high current and energy capabilities and low clamping voltage, providing increased level of protection necessary for the transients expected in telecommunication and AC power networks. Compared to electrically equivalent disc varistors, SV varistors are realised on smaller nominal dimensions....

VARICON Device Ratings and Characteristics

VARICON Device Ratings and Characteristics

VARICON Full Custom Parameter Design Varistors t The customer can specify varistor electrical properties and set the limits of size parameters following General Technical Data given below. The customer can also choose to have standard electrical parameters in nonstandard varistor shape and size to fit the available housing. The customer will have our full engineering support in realising his specific protection requirement. SV Series branch of full custom parameter designed varistors consists of square or rectangular shaped varistors, available either as epoxy coated lead style components...

Protection Level with the worst-case condition in the tolerance region Pulse Rating Curves Model Size 5 ZV 2...40

Pulse Rating Curves Protection Level with the worst-case condition in the tolerance region

Protection Level with the worst-case condition in the tolerance region Pulse Rating Curves Model Size 20 ZV 4...40