20E241K-NB Datasheet, PDF (4/65 Pages) World Produts Inc. – Metal Oxide Varistors

Metal Oxide Varistors
Features
• Our Metal Oxide Varistors have UL, CSA and VDE approvals. VDE approvals are in conjunction
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.
PANY ^{• SOCIÉT}
ISO
9002
Solderability to MIL STD. Epoxy flammability rating of 94V0.
• RoHS Compliance - Metal Oxide Varistors utilizing suffix (-N) denoting RoHS compliant types for
SGS
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.
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 [phone] | Fax [phone] | www.worldproducts.com
2 | Metal Oxide Varistors
Rev. 9.9