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Features
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Our Metal Oxide Varistors have UL, CSA and VDE approvals . VDE approvals are in conjunction
PA
with IEC61051-2 . Plus specific types comply with Accelerated Aging Test Requirements per ANSI/
IEEE C62 .11 . The factory is ISO and TS16949 certified . Taped Parts conform to EIA standards . All
electrical specifications are to industry standards with definitions conforming to IEEE specifications .
Solderability to MIL STD . Epoxy flammability rating of 94V0 .
SGS
RoHS Compliance - Metal Oxide Varistors utilizing suffix (-N) denoting RoHS compliant types for
disk sizes 05, 07, 10,14, 18, 20, 25, 32, 34, 40, and 53 purchased from World Products, LLC comply with RoHS
Directive 2002/95/EC of the European Parliament and of the Council of 27 January 2003 on the restriction of the
use of certain hazardous substances in electrical and electronic equipment . Our metal oxide varistors contain a
maximum concentration value of 0 .1% by weight in homogeneous materials for lead, mercury, hexavalent chromium,
polybrominated biphenyls (PBB) and polybrominated diphenyl ethers (PBDE) and of 0 .01% weight in homogeneous
materials for cadmium . See Part Number System for more details .
Product consistency is maintained through extremely stringent quality and statistical control . On-line automatic test
equipment provides 100% inspection .
Extensive selection of equivalents to essentially all metal oxide varistor types . All specifications available for proper
accurate design-in purposes .
Extremely low leakage current levels achieved and exceptional surge handling capability through proprietary
formulations .
Epoxy conformity and control providing for consistent physical dimensions and improved solderability .
Varistor product design flexibility and quick design cycles in order to assist our customers with their most stringent
varistor applications .
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Definition of Terms (according to IEEE specifications C62.33)
Average Power Dissipation:
Tested using two consecutive pulses at rated peak current using a 10/1000µs test
waveform with a minimum pulse period of 60 seconds between pulses (IEC 61000-4-5) .
Rated RMS Voltage, Rated DC Voltage:
The maximum designated values of power system voltage that may be applied
continuously between the terminals of a device .
Varistor Voltage:
Test characteristic that is used to classify varistors by type . A test current of 1mA DC is typically
used to determine varistor voltage classification type . Varistor voltage clamping characteristics can be defined
at various test levels .
Rated Peak Single Pulse Transient Current:
Maximum surge current, 8/20μs waveform which a varistor is rated to
withstand for a single surge .
Rated Single Pulse Transient Energy:
Maximum allowable energy for a single impulse (see specified waveforms) .
Maximum Clamping Voltage:
Measured peak voltage across the device terminals when a current impulse of specified
amplitude and waveform is conducted through the varistor .
Typical Capacitance:
Typical capacitance values are measured at a test frequency of 1KHZ .
Power Dissipation Ratings
Disk Size
5mm ( < 50 VAC )
5mm ( ≥ 50 VAC )
7mm ( < 50 VAC )
7mm ( ≥ 50 VAC )
10mm ( < 50 VAC )
10mm ( ≥ 50 VAC )
14mm ( < 50 VAC )
14mm ( ≥ 50 VAC )
Pm-watts
0 .01
0 .20
0 .02
0 .25
0 .05
0 .40
0 .10
0 .60
Disk Size
20mm ( < 50 VAC )
20mm ( ≥ 50 VAC )
25mm
32mm
34mm (Single)
34mm (Dual)
40mm
53mm
Pm-watts
0 .20
1 .00
1 .20
1 .60
2 .10
2 .73
2 .10
2 .50
WORLD PRODUCTS INC.
19654 Eighth Street East, Sonoma, CA 95476 | Phone (707) 996-5201 | Fax (707) 996-3380 | www.worldproducts.com
2 | Metal Oxide Varistors
Rev. 9.9
WPI [ World Produts Inc. ]
