M
etal
O
xide
V
aristOrs
Part Number System
Example: VZ20D241KBOCX-VPN
––
(1)
(1) Series
V
= Varistor
(2) Type
Z
= Zinc Oxide
V
––
(2)
Z
–––
(3)
20
––
(4)
E
––––
(5)
241
––
(6)
K
––
(7)
B
––
(8)
O
––
(9)
C
(10)
––
X
-
(11)
––
V
(12)
––
P
(13)
––
N
(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
E
= High Energy Type
R
= (applicable only for 34mm Types)
(5) Varistor Voltage
241 = 24 x 10
1
= 240 (DC Volts)
(6) Tolerance
J
= 5%,
K
= 10%
(7) Packing Code
B
= Bulk Pack
(For taped parts packing code, see Taping Specifications .)
Note: For sizes 32 and larger please reference
specification pages for fields beyond (6) .
(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 boards . If straight leads are required
instead of inline crimp please use code “N” in the
appropriate position as stated above .
Note: Also applicable for 32mm (KW Series)
with wire leads .
R
= Bare disk without leads (no epoxy) .
Available in 20mm & 25mm disk sizes**(RoHS Compliant) .
(9) Lead Cutting
A
= 4 .0 ± 1 .0mm ( .16” ± .04”)
(Crimped lead)
B
= 3 .0 ± 1 .0mm ( .12” ± .04”)
(Crimped lead)
C
= 4 .5 ± 1 .5mm ( .18” ± .06”)
(Crimped lead)
D
= 6 .5 ± 1 .0mm ( .26” ± .04”)
(Crimped lead)
E
= 4 .0 ± 1 .0mm ( .18” ± .04”)
(Straight lead)
F
= 5 .0 ± 1 .0mm ( .2” ± .04”)
(Crimped lead)
G
= 3 .3 ± 0 .5mm ( .13” ± .02”)
(Crimped lead)
(For lead length reference points see
Standard Lead Modifications) .
Note: Also applicable for 32mm (KW Series)
with wire leads .
(10) Lead Spacing
X
= 10mm (0 .4”) lead spacing 1mm (0 .039”) lead diameter) .
(For 18mm and 20mm disk diameter only .)
Z
= 5mm (0 .2”) leadspacing .
(For 10mm and 14mm disk diameters .)
(11) Extremely High Energy Rating
V
= 15KA for 20mm,12KA for 18mm and 7 .5KA for 14mm, “E
Series” parts only . 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 7 .5KA . (If
you have a special voltage request, please inquire) .***
(12) Coating Option
P
= Phenolic Coating with 2000VDC rating . Applicable
for UL1414 (5mm – 20mm), UL1449 3rd Edition (14mm,
18mm and 20mm “V” type only), and CSA (5mm – 20mm)
recognized parts .***
B
= Phenolic Coating with 500VDC rating . Applicable for
UL1414 (5mm – 20mm) and CSA (5mm - 20mm) recognized
parts .***
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 Coating . Applicable for UL1449 (3rd
Edition), UL1414, (5mm-20mm), CSA (5mm-25mm) and
VDE (14D, 14E, 18E and 20E only) .***
(13) RoHS Compliant*
N
= RoHS Compliant
(Available in disk sizes 5mm – 53mm)
* Compliant with Directive 2002/95/EC
L
the European Parliament and of the Council
of
of 27 January 2003 on the restriction of the use of certain hazardous substances in
Seating
electrical and electronic equipment (RoHS Directive) . Please note solderability profile
3.0mm
Plane
on page 107 .
(0.12") max
** 32mm – 53mm types are also available as bare disk with and without leads .
Reference suffix codes stated in Electrical/Dimensions section for these types in this
catalog .
***Metal Oxide Varistors may not be recognized to
UL1414 from December 25, 2013 .
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. ]
