Metal Oxide VaristOrs
Part Number System
Example: VZ20D241KBOCX-VPN
V
Z
20
E
241
K
B
O
C
X
-
V
P
N
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–– –––– ––
––
––
––
––
––
––
––
(1)
(2)
(3)
(4)
(5)
(6)
(7)
(8)
(9)
(10)
(11)
(12)
(13)
(1) Series
V = Varistor
(9) Lead Cutting
A = 4ꢀ0 1ꢀ0mm (ꢀ16” ꢀ04”)
(Crimped lead)
(2) Type
Z = Zinc Oxide
B = 3ꢀ0 1ꢀ0mm (ꢀ12” ꢀ04”)
(Crimped lead)
C = 4ꢀ5 1ꢀ5mm (ꢀ18” ꢀ06”)
(Crimped lead)
D = 6ꢀ5 1ꢀ0mm (ꢀ26” ꢀ04”)
(Crimped lead)
E = 4ꢀ0 1ꢀ0mm (ꢀ18” ꢀ04”)
(Straight lead)
(3) Disk Diameter
05 = 5mm, 07 = 7mm, 10 = 10mm, 14 = 14mm,
18 = 18mm, 20 = 20mm, 25 = 25mm, 32 = 32mm,
34 = 34mm, 40 = 40mm, 53 = 53mm
(4) Type
D = Standard
F = 5ꢀ0 1ꢀ0mm (ꢀ2” ꢀ04”)
(Crimped lead)
E = High Energy Type
R = (applicable only for 34mm Types)
G = 3ꢀ3 0ꢀ5mm (ꢀ13” ꢀ02”)
(Crimped lead)
(For lead length reference points see
Standard Lead Modifications)ꢀ
Note: Also applicable for 32mm (KW Series)
with wire leadsꢀ
(5) Varistor Voltage
241 = 24 x 101 = 240 (DC Volts)
(6) Tolerance
J = 5%, K = 10%
(10) Lead Spacing
X = 10mm (0ꢀ4”) lead spacing 1mm (0ꢀ039”) lead diameter)ꢀ
(For 18mm and 20mm disk diameter onlyꢀ)
Z = 5mm (0ꢀ2”) leadspacingꢀ
(7) Packing Code
B = Bulk Pack
(For taped parts packing code, see Taping Specificationsꢀ)
Note: For sizes 32 and larger please reference
specification pages for fields beyond (6)ꢀ
(For 10mm and 14mm disk diametersꢀ)
(11) Extremely High Energy Rating
V = 15KA for 20mm,12KA for 18mm and 7ꢀ5KA for 14mm, “E
Series” parts onlyꢀ Available in varistor voltages 14mm and
20mm (181-112), 18mm (181-781) (UL1414 and UL1449 3rd
Edition recognized parts)ꢀ CSA recognized for 14, 18 & 20mm
“E Series” parts all values ≥ 201 with the exception of 14E
(911, 102 & 112)ꢀ 14E “V” series parts are rated at 7ꢀ5KAꢀ (If
you have a special voltage request, please inquire)ꢀ***
(8) Lead Configuration (For Bulk Parts)
S = Straight
O = Outward Crimp
I = Inward Crimp
L = Inline Crimp
N = Bulk parts for 320VAC and larger come standard
with inline crimp (see illustration below) for straight disk
seating on PC boardsꢀ If straight leads are required
instead of inline crimp please use code “N” in the
appropriate position as stated aboveꢀ
Note: Also applicable for 32mm (KW Series)
with wire leadsꢀ
(12) Coating Option
P = Phenolic Coating with 2000VDC ratingꢀ Applicable
for UL1414 (5mm – 20mm), UL1449 3rd Edition (14mm,
18mm and 20mm “V” type only), and CSA (5mm – 20mm)
recognized partsꢀ***
B = Phenolic Coating with 500VDC ratingꢀ Applicable for
UL1414 (5mm – 20mm) and CSA (5mm - 20mm) recognized
partsꢀ***
R = Bare disk without leads (no epoxy)ꢀ
Available in 20mm & 25mm disk sizes**(RoHS Compliant)ꢀ
Y= Bare disk with leads (no epoxy)ꢀ
Available in 20mm & 25mm disk size** (RoHS Compliant
20E suffix “V” 181K - 471K CSA c/us certified File
#154862)ꢀ
C= Halogen Free Coatingꢀ Applicable for UL1449 (3rd
Edition), UL1414, (5mm-20mm), CSA (5mm-25mm) and
VDE (14D, 14E, 18E and 20E only)ꢀ***
* Compliant with 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 (RoHS Directive)ꢀ Please note solderability profile
on page 107ꢀ
** 32mm – 53mm types are also available as bare disk with and without leadsꢀ
Reference suffix codes stated in Electrical/Dimensions section for these types in this
catalogꢀ
(13) RoHS Compliant*
N = RoHS Compliant
(Available in disk sizes 5mm – 53mm)
***Metal Oxide Varistors may not be recognized to
UL1414 from December 25, 2013ꢀ
WORLD PRODUCTS INC. 19654 Eighth Street East, Sonoma, CA 95476 | Phone (707) 996-5201 | Fax (707) 996-3380 | www.worldproducts.com
Rev. 9.9
6 | Metal Oxide Varistors
WPI [ World Produts Inc. ]
