M
ETAL
O
XIDE
V
ARISTORS
T
HERMALLY
P
ROTECTED
V
ARISTORS
WORLD PRODUCTS INC.
ELECTRONIC COMPONENT SOLUTIONS
T
HERMALLY
P
ROTECTED
V
ARISTORS
World Products Inc.
19654 Eighth Street East, Sonoma, CA 95476 | Phone (707) 996-5201 | Fax (707) 996-3380 | www.worldproducts.com
Rev. 7.1 (071306)
Protection Products Catalog |
123
T
HERMALLY
P
ROTECTED
V
ARISTORS
World Products Inc.
19654 Eighth Street East, Sonoma, CA 95476 | Phone (707) 996-5201 | Fax (707) 996-3380 | www.worldproducts.com
Rev. 7.1 (071306)
124 |
Protection Products Catalog
T
HERMALLY
P
ROTECTED
V
ARISTORS
Table of Contents
Introduction ............................................................................................................................................................. 126
Features .................................................................................................................................................................... 126
Marking ..................................................................................................................................................................... 126
Approvals ................................................................................................................................................................. 126
Applications ............................................................................................................................................................. 126
Ordering Information ............................................................................................................................................... 127
Absolute Maximum Ratings ................................................................................................................................... 127
Soldering Profile ....................................................................................................................................................... 127
Fuse Configuration Dimensions ............................................................................................................................ 128
25mm --- Standard Series, 3-Leaded, Fuse Located on Third Lead
.................................................................................... 128
14mm, 18mm ---- B Series, 2-Leaded, No Monitor Lead
................................................................................................... 129
20mm --- B Series, 2-Leaded, No Monitor Lead
............................................................................................................... 130
14mm, 18mm, 20mm --- C Series, 3-Leaded, Fuse Located on Second Lead
..................................................................... 131
34mm --- C Series, 3-Leaded, Fuse Located on Second Lead
........................................................................................... 132
Varistor Application Examples .............................................................................................................................. 133
Specifications ........................................................................................................................................................... 134
25mm --- Standard Series, 3-Leaded, Fuse Located on Third Lead --- D, Standard Energy Rating
........................................ 134
14mm --- B Series, 2-Leaded, No Monitor Lead --- E, High Energy Rating
.......................................................................... 135
18mm --- B Series, 2-Leaded, No Monitor Lead --- E, High Energy Rating
.......................................................................... 136
20mm --- B Series, 2-Leaded, No Monitor Lead --- E, High Energy Rating
.......................................................................... 137
14mm --- C Series, 3-Leaded, Fuse Located on Second Lead --- E, High Energy Rating
...................................................... 137
18mm --- C Series, 3-Leaded, Fuse Located on Second Lead --- E, High Energy Rating
...................................................... 138
20mm --- C Series, 3-Leaded, Fuse Located on Second Lead --- E, High Energy Rating
...................................................... 139
34mm --- C Series, 3-Leaded, Fuse Located on Second Lead --- E, High Energy Rating
...................................................... 140
Thermal Characteristics .......................................................................................................................................... 141
Limited Current Test
..................................................................................................................................................... 141
Peak Current Per Pulse Vs. Pulse Duration
..................................................................................................................... 141
Temperature Derating Curve Power and Energy Vs. Temperature
..................................................................................... 141
V-I Characteristics .................................................................................................................................................... 142
Taping Specifications ............................................................................................................................................. 144
World Products Inc.
19654 Eighth Street East, Sonoma, CA 95476 | Phone (707) 996-5201 | Fax (707) 996-3380 | www.worldproducts.com
Rev. 7.1 (071306)
Protection Products Catalog |
125
T
HERMALLY
P
ROTECTED
V
ARISTORS
World Products Inc. TVZ series is a two or
three-leaded Thermally Protected Metal
Oxide Varistor.
One lead of the TVZ varistor is connected to a thermal fuse which is designed to open when the
varistor is under sustained abnormal over-voltage conditions. The TVZ series is designed to meet the
abnormal over-voltage requirements of UL 1449 3rd edition, Section 37.4.
Traditional Metal Oxide Varistors withstand 150% of its rated voltage for a given duration. But Metal
Oxide Varistors may fail to a short-circuit condition or fail to open when subjected to sustained
steady-state over-voltage above its rated specifications. TVZ has a thermal fuse integrated with an
MOV disk that responds to the MOV temperature and disconnects the MOV from the line, should the
temperature or voltage exceed a certain level.
World Products Inc. three-leaded device is designed to be connected, via the monitor lead, to an
indicator (such as an LED) to provide diagnostic features indicating if the MOV is disconnected from
the circuit in the event the fuse element opens.
As a result of the integration of the thermal fuse attached to the MOV disc, Thermally Fused
Varistors provide an instant response to unexpected over-voltage situations. Lower inductance is
another benefit of the inclusion of a thermal fuse, enhancing clamping performance to sudden over-
voltage transients. World Products Inc. Thermally Protected Varistors offer protection to sensitive
downstream electric components.
SINCERA
T25D271K
611
S
T2 IN
0E CE
B2 RA
71
K
61
1
A
ER 71K
1
NC 2
61
SI 8EC
T1
Features
UL1449, UL1414 and cUL recognition or pending status.
Patented product (Patent #6636403).
Low Leakage Current under normal operating voltage.
UL1449 3rd edition abnormal over- voltage test (10A, 5A, 2.5A, 0.5A and 0.125A) recognition
pending.
Wave solderable.
High Surge Current Rating up to 40kA.
-55°C to 85°C Operating Temperature Range.
Three leaded versions available, with fuses located on either the third or second lead.
Compliance with Accelerated Aging Test Requirements per ANSI/IEEE C62.11 pending.
UL60691 recognition pending.
ISO and TS16949 certification.
Marking
SINCERA brand name.
Part Marking representing the part number:
T25D271K is TVZ25D271KBS.
Date code first digit represents the year and
second and third digits represent the week of the
year. For example 611 date code is separated as
follows: 6 = 2006 and 11 = The 11th week of the
year. This date code system was implemented
from 9/15/05.
Approvals
14mm
UL 1449
Second Edition
File # E196885
UL1449
Second Edition 37.4
File #E196885
UL and CUL1414
File # E71602 for
130VAC through
680VAC values.
UL60691
File #E196885
Complies with
accelerated aging test
requirements ANSI/
IEEE C62.11
File #E196885
Pending
18mm
Pending
20mm
Pending
25mm
34mm
Pending
Applications
Transient Voltage Surge Suppressor (TVSS)
Products
AC Panel Protection Modules
AC Line Power Supplies
Surge Protected Strip
AC Power Meters
Uninterruptable Power Supply
White Goods
Inverters
DIN Rail
AC/DC Power Supplies
Pending
Pending
Pending
Pending
Pending
Pending
Pending
Pending
Pending
Pending
Pending
Pending
Pending
Pending
Pending
Pending
Pending
Pending
World Products Inc.
19654 Eighth Street East, Sonoma, CA 95476 | Phone (707) 996-5201 | Fax (707) 996-3380 | www.worldproducts.com
Rev. 7.1 (071306)
126 |
Protection Products Catalog
T
HERMALLY
P
ROTECTED
V
ARISTORS
Ordering Information
TVZ 20
(1) (2)
E
(3)
B 241 K B S
(4) (5) (6) (7) (8)
(1)
(2)
Thermal Fuse Metal Oxide Varistor
Diameter
14:
14mm
18:
18mm
20:
20mm
25:
25mm
34:
34mm
Energy Rating
D:
25mm Standard Energy Rating
E:
High Energy Rating
R:
34mm Standard Energy Rating
Fuse Location
Blank:
3-Leaded, Fuse Located on Third Lead
(Available in 25mm)
B:
2-Leaded, No Monitor Lead
(Available in 14mm, 18mm, 20mm)
C:
3-Leaded, Fuse Located on Second Lead
(Available in 14mm, 18mm, 20mm, 34mm)
Varistor Voltage/AC Voltage
Varistor Voltage for 14, 18, 20, & 25mm,
201
= 20 x 10
1
= 200VDC
AC Voltage for 34mm,
151
= 150VAC
(6)
Tolerance
K:
±10%
Packaging
B:
Bulk
For taped and lead configuration of taped parts, see
taping specifications for suffix codes.
Lead Configuration for Bulk Parts Only
S:
Straight (For varistor voltage <681K), and inline
crimped (for varistor voltage >681K)
L:
Inline crimped (For varistor voltage <681K)
N:
Varistor voltage >681 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 this position.
(7)
(8)
(3)
(4)
3mm max.
Inline Crimp
(5)
(9)
Suffix for Custom Types
X33:
Alternative Design with 3mm Monitor Terminal (34mm
only) See Fuse Configuration & Dimensions for 34mm
for more information.
Absolute Maximum Ratings
Continuous RMS Current (Monitor Lead)
Typical Response Time
Insulation Resistance
Hi-Pot Encapsulation
Maximum Voltage-Temperature Coefficient
Operating Temperature Range
Storage Temperature Range
Isolation Capability (when thermal element is open)
100mA
<15nseconds
>1000MΩ
2500 VDC
<0.01%/°C
-55°C to 85°C
-55°C to 125°C
600VAC
Soldering Profile
300
250
Temperature (deg. C)
200
150
100
50
160°C
130°C
Typically
40 sec.
245°C
215°C
0
60
120
Time (seconds)
180
240
World Products Inc.
19654 Eighth Street East, Sonoma, CA 95476 | Phone (707) 996-5201 | Fax (707) 996-3380 | www.worldproducts.com
Rev. 7.1 (071306)
Protection Products Catalog |
127
微控制器 MCU
京公网安备 11010802033920号
Copyright © 2005-2026 EEWORLD.com.cn, Inc. All rights reserved
电子工程世界
