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M
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O
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Table of Contents
Features . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Definition of Terms (according to IEEE specifications C62 .33) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Power Dissipation Ratings . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
General Characteristics . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Part Marking . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Approvals . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Part Number System . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Standard Dimensions and Lead Modification Options . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
D Series — Electrical Characteristics (5, 7, 10, 14, 20, 25 mm) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
High Energy E Series — Electrical Characteristics (5, 7, 10, 14, 20, 25 mm) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
VZ25R Series - Electrical Characteristics . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
VZ32 KW (Wire Lead) Series — Electrical Characteristics . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
VZ32 Series — Electrical Characteristics & Dimensions . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
VZ34 Single Series — Electrical Characteristics & Dimensions . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
VZ34 Dual Series — Electrical Characteristics & Dimensions . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
VZ40 Series — Electrical Characteristics & Dimensions . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
VZ53 Series — Electrical Characteristics & Dimensions . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Peak Pulse and Derating Curves . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
V-I Characteristics . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Soldering Profile . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
5mm / 7mm Taping Specifications . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
10mm Taping Specifications . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
14mm Taping Specifications . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
18mm / 20mm Taping Specifications . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Standard Bulk Packaging . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Applications . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Circuit Examples . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
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WORLD PRODUCTS INC.
19654 Eighth Street East, Sonoma, CA 95476 | Phone (707) 996-5201 | Fax (707) 996-3380 | www.worldproducts.com
Metal Oxide Varistors | 1
Rev. 9.9
M
etal
O
xide
V
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Features
OM
•
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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 .
Y
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SO
ISO
9002
R
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ERED
C
REGISTR
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IST
ÉE
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
M
etal
O
xide
V
aristOrs
General Characteristics
Storage Temperature
Operating Surface Temperature
Operating Ambient Temperature
Maximum Voltage-Temperature
Coefficient
Insulation Resistance
Hi POT (Leads to Case, 1 min.)
Typical Response Time
Epoxy Rating
Current/Energy Derating (>85°C)
DC Leakage Current
Solderability
Failure Criteria
- 55° C to + 125° C
125° C
- 55° C to + 85° C (without derating)
< -0 .01 % / °C
1000 Megohm min .
2500 VDC (Phenolic coating 500 VDC and 2000 VDC ratings)
< 15 nsec .
94 V-0
- 2 .5 % / °C
200µA Max (at rated DC working voltage)
MIL STD 202G, Method 208H
Voltage change ± 10% from initially measured Varistor Voltage . When
determining if varistor is within aforementioned criteria the same temperature
must be observed as was used for initial Varistor Voltage measurements .
Part Marking
Example: 20E241K-VB
–– –– ––– ––
(1)
(2)
(3)
(4)
(1) Disk Diameter
5
= 5mm,
7
= 7mm,
10
= 10mm,
14
= 14mm,
18
= 18mm,
20
= 20mm,
25
= 25mm,
32
= 32mm,
34
= 34mm,
40
= 40mm,
53
= 53mm
(2) Type
D
= Standard
E
= High Energy
R
= (applicable only for 34mm Types)
(3) Varistor Voltage
241
= 24 x 10
1
= 240
(4) Tolerance
J
= ±5%,
K
= ±10%,
M
= ±20%
J=5%, K=10%
20
E
241
K - N
–– ––
(5)
(6)
32mm – 53mm
B
5mm – 32mm (Wire Lead)
Factory Identifier
depicted with black
dot(s) in this position.
SINCERA
RoHS
Compliant -N
(as of October 2007)
SINCERA
40D511K-N
037
SINCERA
40D511K-N
037
20E241K-NB
C 037
Phenolic Coating
Rated at 500 VDC
Date Code
C=Halogen Free Coating
J=5%, K=10%
There are two options for placement
of date code for 32mm - 53mm.
(5) N
= RoHs Compliant Series (as of October 2007 forward, per Date Code)
(6) B
= Phenolic coating rated at 500 VDC . Phenolic coating rated at 2000 VDC requires no marking .
Date Code
037 = First digit represents year (0 = 2010) . Second and third digits represent the week of the year .
This new date code system was implemented from 9/15/05 .
NOTE:
Parts will be marked
SINCERA .
(This is the brand name .)
WORLD PRODUCTS INC.
19654 Eighth Street East, Sonoma, CA 95476 | Phone (707) 996-5201 | Fax (707) 996-3380 | www.worldproducts.com
Metal Oxide Varistors | 3
Rev. 9.9
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