Metal-OxideVaristors (MOVs)
Radial Lead Varistors > ZA Series
Part Numbering System
OPTION CODES
BASE PART CODES
(See notes below)
(See Ratings & Specifications tables and notes below)
P W XXXXX
V XXX ZA XXX
For “VARISTOR”
See OPTIONS CODES notes below
(V
)
NOMINAL VOLTAGE
NOM
(One, Two or Three Digits)
SERIES + PACKAGING / LEAD STYLE
DESIGNATOR
For standard parts, use the BASE PART designator only.
For parts with non-standard options (such as additional form, packaging
and lead space options), use BASE PART + OPTION CODE.
OPTION CODE items are subject to availability and minimum order
requirements. Please contact a Littelfuse products representative for
additional information or questions
(See BASE PART CODES notes below)
ZA = Bulk Pack / Straight Leads (standard)
ZC = Bulk Pack / Crimped and Trimmed Leads
ZS = Tape and Reel / Straight Leads
ZT = Tape and Reel / Crimped Leads
ZU = Tape and Reel / Under-Crimped Leads
RELATIVE ENERGY INDICATOR
(One or Two Digits)
LEAD-FREE, HALOGEN-FREE AND
RoHS COMPLIANT INDICATOR
COPPER ELECTRODE
Ordering Notes:
BASE PART CODES:
OPTION CODES:
Series + Packaging / Lead Style Designators:
X10: 10MM LEAD SPACING OPTION --
For 10 -/+1 mm (0.394-/+0.039 in) lead spacing (available
on 20mm diameter models only), append standard
Ordering examples:
model BASE PART number with "X10." Example:
Straight
Lead
Bulk Pack
(standard)
Straight
Lead
Tape &
Reel
Crimped Crimped &
Under-
Lead
Tape &
Reel
Trimmed Crimp Lead
Standard Model
Order As
Lead
Bulk Pack
Tape &
Reel
V18ZA40P
V18ZA40PX10
V18ZA3P
V18ZS3P
V18ZT3P
V18ZC3P
V18ZU3P
X2855: Nickel Barrier COATED WIRE OPTION --
Crimped lead ZA Series varistors are supplied standard in tape and
reel, denoted with "ZT."
All standard parts use tinned copper clad steel wire.
Nickel Barrier Coated wire is available as an option,
consisting of Copper wire with a flashing of Nickel
followed by a top coating ofTin. To order append standard
model BASE PART number with "X2855." Example:
"ZC" style is supplied in bulk only.
"ZU" style is supplied in tape and reel only.
For crimped leads without trimming and any varitions other than that
described above, please contact Littelfuse.
Standard Model
Order As
V18ZA40P
V18ZA40PX2855
Packaging and Quantities:
X1347: Hi-Temperature phenolic coating option --
Littelfuse ZA Series varistors are shipped standard in bulk pack
with straight leads and lead spacing outlined in the Package
Dimensions section of this data sheet. Contact your Littelfuse
sales representative to discuss non-standard options.
Phenolic Coated C-III Series devices are available with improved
maximum operating maximum temperature of 125°C.
To order, add X1347 to end of part number
(Example: V22ZA3PX1347).
Tape & Reel Quantities:
Quantity Per Reel
Device Size
Voltage
For additional information please refer to the section labeled
"Phenolic Coating Option" within this document.
"S" Reel
1000
1000
500
500
500
"T" Reel
1000
1000
500
500
500
"U" Reel
1000
1000
500
500
400
5mm
7mm
10mm
14mm
20mm
All
All
All
< 300V
< 300V
© 2018 Littelfuse, Inc.
Specifications are subject to change without notice.
Revised: 12/12/18