ELECTRONIC COMPONENT SOLUTIONS
WORLD PRODUCTS INC.
TVZ: T
HERMO
-F
USE
V
ARISTORS
TVZ: T
HERMO-
F
USE
V
ARISTORS
World Products Inc.
19654 Eighth Street East, Sonoma, CA 95476 | Phone (707) 996-5201 | Fax (707) 996-3380 | www.worldproducts.com
Rev. 2.2 (5-31-06)
Protection Products Catalog |
123
TVZ: T
HERMO
-F
USE
V
ARISTORS
World Products Inc.
19654 Eighth Street East, Sonoma, CA 95476 | Phone (707) 996-5201 | Fax (707) 996-3380 | www.worldproducts.com
Rev. 2.2 (5-31-06)
124
| Protection Products Catalog
TVZ: T
HERMO
-F
USE
V
ARISTORS
Table Of Contents
Description
Features
Part Number Codes
Rating
Dimensions
Specifications
Thermo Characteristic
Soldering Profile
Application
Peak Current Per Pulse Versus Pulse Duration
Temperature Derating Curve Power and Energy Rating vs. Temperature
V-I Characteristics
Taping Specifications
Dimensions of Ammo Box and Reel
125
125
126
126
127
130
133
133
133
134
134
135
137
138
Description
The Thermo-Fuse Varistor (TVZ) is a family of Transient Voltage Surge Suppression products. TVZ is a three-
lead Thermally Protected Metal Oxide Varistor. One lead of the TVZ varistor is connected to a thermal fuse,
which may open when the varistor is subjected to prolonged abnormal over-voltage conditions.
The TVZ has a monitor lead (#2) for the purposes of indicating that the Metal Oxide Varistor has been
disconnected in the circuit (thereby offering the feature of a monitoring circuit).
Features
•
•
•
UL1449, UL1414 and cUL recognized.
All TVZ18, TVZ20 and TVZ25 Series Types comply with Accelerated Aging Test
Requirements per ANSI/IEEE C62.11, UL File# E172311.
Low Leakage Current under normal operating voltage and high surge current ratings.
World Products Inc.
19654 Eighth Street East, Sonoma, CA 95476 | Phone (707) 996-5201 | Fax (707) 996-3380 | www.worldproducts.com
Rev. 2.2 (5-31-06)
Protection Products Catalog |
125
TVZ: T
HERMO
-F
USE
V
ARISTORS
Part Number Codes
*Marking: (a) SINCERA. which is the brand name.
(b) Part marking, for example: T20E241K
(c) Date code
First digit represents the year and second and third digits represent the week of the year.
For example 552 date code is separated as follows: 5 = 2005 and 52 = The 52nd week
of the year. This date code system was implemented from 9/15/05.
TVZ
Thermo- Fuse
ZnO Varistor
DIAMETER
18: 18mm
20: 20mm
25: 25mm
20
E
241
K
B
S
R
R: 1mm lead diameter for 18mm size
FL: For 25mm minimum fuse lead
(lead #3)
TYPE
D: Standard Disk series
E: High energy series
VARISTOR VOLTAGE
241—24x10
1
— 240 ( DC Volt)
K: Voltage tolerance+/-10%
S: Straight lead (For bulk parts)
N: Bulk parts for 320VAC and larger come
standard with inline crimp (see illustration
below) for straight disc seating on PC boards.
If straight leads are required instead of inline
crimp please use code "N" in the appropriate
position as stated above. (For bulk parts)
3mm max
B: Bulk package
For taped parts see taping specifications
for suffix codes.
Rating
• -55°C to 85°C Operating Temperature Range
• -55°C to 125°C Storage Temperature Range
• Maximum Voltage-Temperature Coefficient:
• Hi-Pot Encapsulation:
• Insulation Resistance:
• Continuous RMS Current (For Lead - 2, Monitor Lead):
• Isolation Capability (When thermal element is open):
< 0.01
2500
>1000
100
600
%/°C
Vdc
Mohm
mA
Vac
World Products Inc.
19654 Eighth Street East, Sonoma, CA 95476 | Phone (707) 996-5201 | Fax (707) 996-3380 | www.worldproducts.com
Rev. 2.2 (5-31-06)
126
| Protection Products Catalog
TVZ: T
HERMO
-F
USE
V
ARISTORS
Dimensions
TVZ Series
Dmax
Hmax
dø (NOM.)
a
b
TVZ18
TVZ20
TVZ25
21.0 (0.83)
23.0 (0.90)
28.5 (1.12)
24.0 (0.94)
28.0 (1.10)
33.0 (1.30)
*0.8 (0.031)
1.0 (0.039)
1.0 (0.039)
7.5 (0.30)
10.0 (0.39)
12.7 (0.50)
6.5 (0.26)
6.5 (0.26)
6.5 (0.26)
(1) Unit: mm (inch)
(2) a ± 1.0 (0.039), b ± 1.2 (0.047)
* May be offered with 1.0mm (0.039 inch) lead diameter using suffix “R”. See “Part Number Code.”
Dmax.
Tmax.
3 (Fuse Lead)
Hmax.
TF
2 (Monitor Lead)
25 min.
(0.98)
12.5(0.49) min.
3
1 2
a b
dø
MOV
W2
W1
1
World Products Inc.
19654 Eighth Street East, Sonoma, CA 95476 | Phone (707) 996-5201 | Fax (707) 996-3380 | www.worldproducts.com
Rev. 2.2 (5-31-06)
Protection Products Catalog |
127
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