Maida Development Company -
sales@maida.com
- (757) 723-0785
STANDARD MARKING
Minimum marking shall consist of an
abbreviated style designation and, when
space is available, the manufacturer’s
initials or company logo.
Example
MDC
Z131
210UL
Where:
MDC - Company Initials
Z -
Zinc Oxide Varistor
131 -
AC Voltage rating (130VAC)
210 -
Rating code
UL -
UL recognition, if applicable
A manufacturing date code and/or
special markings are available upon
request.
Other safety agency designations are
included where applicable.
D MAX.
T MAX.
H MAX.
X NOM.
Y NOM.
d NOM.
Y NOM.
D MAX.
T MAX.
H MAX.
X NOM.
d NOM.
HIGH ENERGY
SERIES
INTRODUCTION
D 78 80 ZOV 131 RA 210
1. Coating
Designation
D – Standard Epoxy Coating
P – Phenolic Coating
S – Square Disc Epoxy Coating
PS – Square Disc Phenolic
Coating
Neither – Denote no conformal
coating.
2. Nominal Disk Diameter
S66 – 25mm Square
78 – 32mm
S75 – 34mm Square
75 – 40mm
77 – 53mm
3. Lead
Configuration
(Refer to lead codes)
4. Material
Identifier
Zinc Oxide Varistor
5. AC Voltage Rating
Two significant figures plus number
of zeroes that follow, i.e. 131 is 130 VAC
6. Special
Instructions,
RA is standard
7. Rating
Code,
up to four numbers
The High Energy Series is our large tab-leaded and
wire-leaded varistors. They are available in round and
square shapes. These varistors are available in
25mm, 32mm, 34mm, 40mm, and 53mm
configurations including single and dual discs. They
are available with maximum continuous operating
voltages (MCOV) ranging from 130VAC to 1000VAC
(up to 1500VAC upon request).
The High Energy Series is designed for pulse
repetition and/or very large surge current
environments. Numerous tab forms are available for
all sizes.
STYLE DESIGNATION
The Maida Style Number is the typical means to
identify our components when ordered. The style
number identifies several parameters that are
important for the characteristics of the device. An
alternative ordering method, if known, is by our Item
Number.
The following example is the standard part
numbering system when ordering our High Energy
Series components by the Maida Style Number:
55