Owner manual

© 2014 Littelfuse, Inc.
150
Revised: February 13, 2014
Varistor Products
ZA Varistor Series
Radial Lead Varistors > ZA Series
Specifications are subject to change without notice.
Please refer to www.littelfuse.com/series/za.html for current information.
Part Numbering System
For “VARISTOR”
NOMINAL VOLTAGE
(V
NOM
)
(One, T
wo or Three Digits)
V XXX ZA XXXX
RELATIVE ENERGY INDICATOR
(One or Two Digits)
LEAD-FREE,
HALOGEN-FREE AND
RoHS COMPLIANT INDICATOR
P
See OPTIONS CODES notes below
XXXXX
OPTION CODES
(See notes below)
BASE PART CODES
(See Ratings & Specifications tables and notes below)
SERIES +
PACKAGING / LEAD STYLE
DESIGNA
TOR
(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 = Ta pe and Reel / Under-Crimped Leads
Ordering Notes:
Series + Packaging / Lead Style Designators:
Ordering examples:
Straight
Lead
Bulk Pack
(standard)
Straight
Lead
Tape &
Reel
Crimped
Lead
Tape &
Reel
Crimped &
Trimmed
Lead
Bulk Pack
Under-
Crimp Lead
Tape &
Reel
V18ZA3P V18ZS3P V18ZT3P V18ZC3P V18ZU3P
Standard Model Order As
V18ZA40P V18ZA40PX10
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.
Tape & Reel Quantities:
Crimped lead ZA Series varistors are supplied standard in tape and
reel, denoted with "ZT."
"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.
Packaging and Quantities:
Device Size Voltage
Quantity Per Reel
"S" Reel "T" Reel "U" Reel
5mm All 1000 1000 1000
7mm All 1000 1000 1000
10mm All 500 500 500
14mm < 300V 500 500 500
20mm < 300V 500 500 400
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
BASE PART CODES: OPTION CODES:
Standard Model Order As
V18ZA40P V18ZA40PX2855
X10: 10MM LEAD SPACING OPTION --
For 10 -/+1 mm (0.394-/+0.039 in) lead spacing (available
on 20mm diameter models only), append standard
model BASE PART number with "X10." Example:
X2855: Nickel Barrier COATED WIRE OPTION --
All standard parts use tinned copper clad steel wire.
Nickel Barrier Coated wire is available as an option,
consisting of Copper wire with a ashing of Nickel
followed by a top coating of Tin. To order append standard
model BASE PART number with "X2855." Example:
X1347: Hi-Temperature phenolic coating option --
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).
For additional information please refer to the section labeled
"Phenolic Coating Option" within this document.