Varistors Datasheet
C-III Series
Radial Leaded Varistors
RoHS
Description
The C-III Varistor Series of Metal-Oxide Varistors (MOVs) are
specifically designed for applications requiring high surge energy
absorption ratings and superior multiple pulse absorption rating.
This is achieved through a special dielectric material formulation
which also results in higher repetitive surge ratings than other
MOV types.
The C-III Varistor Series is primarily intended for use in AC line
Surge Protection Device (SPD) product and other similar
applications requiring high transient energy and peak current
capability in a relatively small package size.
Features & Benefits
■ Lead–free, Halogen-Free
and RoHS compliant
Additional Information
■ High energy absorption
capability WTM 40J
to 530J (2ms)
■ High pulse life rating
■ High peak pulse
current capability
Resources
Accessories
Samples
■ ITM 3500A to
10,000A (8/20µs)
Agency Approval
Agency File
Number
UL1449
E320116
CECC 42201-006
IEC 61051-1
IEC 61051-2
IEC 60950-1 (Annex Q) for 14mm
and 20mm only
CECC 42201-006
IEC 61051-1
IEC 61051-2
IEC 60950-1 (Annex Q) for 14mm
and 20mm only
■ No derating up to
85ºC ambient
■ The C-III Series is supplied
in 10mm, 14mm and
20mm disc versions with
various lead options
■ Wide operating voltage
range VM(AC)RMS
130V to 1000V
Agency Approvals
Agency
■ Available in tape and reel
for automatic insertion; Also
available with crimped and/
or trimmed lead styles
116895
E1273/F
Absolute Maximum Ratings
For ratings of individual members of a series, see Device Ratings and Specifications chart
Continuous
C-III Series
Units
130 to 1000
V
3500 to 10,000
A
Steady State Applied Voltage
AC Voltage Range (VM(AC)RMS)
Transients
Single-Pulse Peak Current (ITM) 8/20µs Wave
(See Peak Pulse Current Test Waveform)
Single-Pulse Energy Range (WTM) 2ms Rectangular Wave
40 to 530
J
Operating Ambient Temperature Range (TA)
-55 to +85
ºC
Storage Temperature Range (TSTG)
-55 to +125
ºC
Temperature Coefficient (a ) of Clamping Voltage (VC) at Specified Test Current
680
4.5 (0.177)
9.5 (0.374)
4.5 (0.177)
9.5 (0.374)
4.5 (0.177)
9.5 (0.374)
-
11.0 (0.433)
-
11.0 (0.433)
-
11.0 (0.433)
0.76 (0.030)
0.86 (0.034)
0.95 (0.037)
1.05 (0.041)
130 - 320
E
385 - 680
7.3 (0.287)
> 680
Øb
130 - 625
>625
7.3 (0.287)
14.0 (0.551)
7.3 (0.287)
14.0 (0.551)
0.76 (0.030)
0.86 (0.034)
0.76 (0.030)
0.86 (0.034)
14.0 (0.551)
ATRIM
All
–
19.5 (0.768)
–
23.5 (0.925)
–
30.0 (1.18)
LTRIM
All
2.41 (0.095)
4.69 (0.185)
2.41 (0.095)
4.69 (0.185)
2.41 (0.095)
4.69 (0.185)
Dimensions are in millimeters (inches)
1. 10mm lead spacing also available. See additional lead style options.
2. 7mm and 12mm devices also available upon request. Contact factory for details.
3. 1000V parts supplied with lead wire of diameter 1.00 -/+ 0.05 (0.039 -/+ 0.002).
8
© 2021 Littelfuse, Inc.
Specifications are subject to change without notice.
Revised: GD. 07/16/21
Varistors Datasheet
C-III Series
Radial Leaded Varistors
Tape and Reel Specifications
• (available for voltage ratings up to 550V only)
CRIMPED LEADS "LT"
P
P2
P2
SEATING
PLANE
H1
SEATING
PLANE
H0
DP
DP
DH
DH
DH
DH
E
DH
DH
b
C
b
H0
D0
W0 W2
W1
W0 W2
W1
W0 W2
W1 W
b
W
P1
F
t
P1P0
F
t
F
t
D0
Crimped Leads "LT"
Crimped Leads "LT"
DP
C
SEATING
PLANE
D0
DP
E
C
H0
H1
DP
P
P2
H1
E
PDP
W
P0
P1
P0
STRAIGHT LEADS "LS"
Crimped Leads "LT"
P
P2
P2
PDP
DP
DP
DP
DP
DP
P
P2
E
E
DH
DH
DH
DH
E
DH
DH
Symbol
Description
P
Pitch of Component
Model Size
10mm
14mm
20mm
25.4 -/+1.0
P0
Feed Hole Pitch
12.7 -/+ 0.2
P1
Feed Hole Center to Pitch
8.85 -/+ 0.8
P2
Hole Center to
Component Center
12.7 -/+ 0.7
F
Lead to Lead Distance
7.50 -/+ 0.8
h
Component Alignment
2.00 Max
W
Tape Width
18.25 -/+ 0.75
W0
Hold Down Tape Width
12.0 -/+ 0.3
W1
Hole Position
9.125 -/+ 0.625
W2
Hold Down Tape Position
0.5 Max
H
Height From Tape Center
To Component Base
19.0 -/+1.0
H0
Seating Plane Height
16.0 -/+ 0.5
H1
Component Height
D0
Feed Hole Diameter
4.0 -/+ 0.2
t
Total Tape Thickness
0.7 -/+ 0.2
p
Component Alignment
3° Max
U
Under crimp Width
8.0 Max
36 Max 40 Max
46.5 Max
H1
H1
H
b
H
H1
Straight Leads "LS"
Straight Leads "LS"
Straight Leads "LS"
W0 W2
W1 W
W
P1
F
t
P1
P0
F
t
F
t
P0
P1
W
P0
P
P2
E
PDP
DP
DP
DP
E
UNDER-CRIMPED LEADS
DH "LU"
P2
P
P2
DP
DP
DH
DH
DH
E
DH
DH
H1
U
H1
U
Ho
H1
W1
b
D0
D0
W1
W0 W2
b
H
D0
W0 W2
b
Ho
b
Ho
D0
D0
W1
W1
W0 W2
W1 W
U
b
D0
W0 W2
W0 W2
W
P1
F
t
P1P0
F
t
F
t
W
P0
P1
Under-crimped Leads "LU"
Under-crimped Leads "LU"
P0
Under-crimped Leads "LU"
9
© 2021 Littelfuse, Inc.
Specifications are subject to change without notice.
Revised: GD. 07/16/21
Varistors Datasheet
C-III Series
Radial Leaded Varistors
Part Numbering System
OPTION CODES
BASE PART CODES
(See notes below)
(See Ratings & Specifications tables and notes below)
V XXXX LA XX C P
XXXXX
See OPTIONS CODES notes below
For “VARISTOR”
V M(AC)
(Three or four digits -- 130V to 1,000V)
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
SERIES + PACKAGING / LEAD STYLE
DESIGNATOR
(See BASE PART CODES notes below)
LA = Bulk Pack / Straight Leads (standard)
LC = Bulk Pack / Crimped and Trimmed Leads
LS = Tape and Reel / Straight Leads
LT = Tape and Reel / Crimped Leads
LU = Tape and Reel / Under-Crimped Leads
RELATIVE ENERGY INDICATOR
(One or Two Digits)
C-III SERIES DESIGNATOR
LEAD-FREE, HALOGEN-FREE AND
RoHS COMPLIANT INDICATOR
Ordering Notes:
BASE PART CODES:
OPTION CODES:
Series + Packaging / Lead Style Designators:
Ordering examples:
X10: 10MM LEAD SPACING OPTION --
Straight Lead
Bulk Pack
(standard)
V130LA20CP
Straight Lead
Tape & Reel
Crimped &
Trimmed Lead
Bulk Pack
Under-Crimp
Lead
Tape & Reel
V130LS20CP
V130LC20CP
V130LU20CP
For 10 (-/+1)mm lead spacing (available on 20mm diameter models
only), append standard model BASE PART number with "X10."
Example:
Crimped leads are standard on LA Series varistors supplied in tape
and reel, denoted with "LT."
"LC" style is supplied in bulk only.
"LU" style is supplied in tape & reel only.
For crimped leads without trimming and any varitions other than
that described above, please contact Littelfuse.
Tape & Reel Quantities:
10mm
14mm
20mm
V130LA20CP
V130LA20CPX10
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 of Tin. To order
append standard model BASE PART number with "X2855."
Example:
Littelfuse C-III Series varistors are shipped standard in bulk pack
with straight leads and lead spacing outlined in the Package
Dimensions section of this data sheet.
Voltage
Order As
X2855: Nickel Barrier COATED WIRE OPTION --
Packaging and Quantities:
Device Size
Standard Model
Standard Model
Order As
V130LA20CP
V130LA20CPX2855
X1347: Hi-Temperature phenolic coating option --
Quantity Per Reel
"T" Reel
"S" Reel
"U"Reel
ALL
500
500
500
≤ 275V
500
500
500
≥ 275V
400
400
400
≤ 275V
500
500
500
≥ 275V
400
400
400
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: V230LA40CPX1347).
For additional information please refer to the section labeled
"Phenolic Coating Option" on the third page of this document under
the "Electrical Characteristics" table.
Disclaimer Notice - Information furnished is believed to be accurate and reliable. However, users should independently evaluate the suitability of and test each product selected for their own
applications. Littelfuse products are not designed for, and may not be used in, all applications. Read complete Disclaimer Notice at www.littelfuse.com/disclaimer-electronics.
10
© 2021 Littelfuse, Inc.
Specifications are subject to change without notice.
Revised: GD. 07/16/21
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