T
hermally
P
roTecTed
V
arisTors
Table of Contents
Features. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Applications . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Approvals . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Part Marking . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Part Number System . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Absolute Maximum Ratings . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Soldering Profile . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Fuse Configuration and Dimensions . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Varistor Application Examples. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Specifications . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Thermal Characteristics . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
V-I Characteristics . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Taping Specifications . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Standard Bulk Packaging . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Applications . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
126
126
126
127
128
128
128
129
134
135
143
144
146
148
149
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 39.4.
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.
Proper design of surge protective devices (SPD’s) require that they meet new UL1449 3rd Edition requirements
for abnormal over-voltage limited current. Fuses that are meant to protect the system for large fault currents do
not address the need to protect against low fault currents. These low fault currents can result in catastrophic
failure prior to tripping the higher current fuse. TVZ series varistors can meet the needs of the SPD designer,
avoiding having to create a complicated/high cost approach.
World Products Inc.
19654 Eighth Street East, Sonoma, CA 95476 | Phone (707) 996-5201 | Fax (707) 996-3380 | www.worldproducts.com
Protection Products Catalog |
125
Rev. 9.0 (02.19.08)
T
hermally
P
roTecTed
V
arisTors
Features
•
•
•
•
•
•
•
•
•
•
•
UL1449, UL1414 and CUL recognition or pending status.
Patented product (Patent #6636403).
Low Leakage Current under normal operating voltage.
S
T2 IN
0E CE
B2 RA
71
K
61
1
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.
SINCERA
T25D271K
611
A
ER 71K
1
NC 2
61
SI 8EC
T1
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
Approvals
14mm
UL and CUL 1449
Third Edition
File # E196885
UL and CUL 1449
Second Edition
File #E196885
UL and CUL1414
File # E71602
UL60691
File #E196885
Complies with accelerated aging test
requirements ANSI/IEEE C62.11
File #E196885
VDE IEC-CECC spec
Pending
18mm
Pending
20mm
Pending
25mm
Pending
RoHS Series
Only*
34mm
Pending
RoHS Series Only
RoHS Series Only
RoHS Series Only
RoHS Series Only
√
Pending
Pending
Pending
√
Pending
Pending
Pending
√
Pending
Pending
Pending
√
Pending
Pending
Pending
√
Pending
Pending
Pending
*with exception of 750VAC rated part.
World Products Inc.
19654 Eighth Street East, Sonoma, CA 95476 | Phone (707) 996-5201 | Fax (707) 996-3380 | www.worldproducts.com
126 |
Protection Products Catalog
Rev. 9.0 (02.19.08)
T
hermally
P
roTecTed
V
arisTors
Part Marking
(1)
T 14 EB N 241 K
(2)
(3)
(4)
(5)
Standard Version
SINCERA
T14EB241K
740
(6)
(1) T = TVZ Series
(2) Disc Diameter
14 =
14mm
18 =
18mm
20 =
20mm
25 =
25mm
34 =
34mm
(3) Type
D =
25mm Disc Size (Three Leads)
EB =
14mm, 18mm & 20mm Disc Size (Two Leads)
EC =
14mm, 18mm & 20mm Disc Sizes (Three Leads)
RC =
34mm Disc Size (Three Leads)
(4) N =
RoHs Compliant Series
(5) Varistor Voltage
241
= 24 x 10
1
= 240
(6) Tolerance
K =
±10%
Date Code
RoHS Compliant Version
SINCERA
T14EBN241K
740
RoHS
Compliant “N”
Date Code
Date Code
740 =
First digit represents year (7 = 2007).
Second and third digits represent the week of the year.
NOTE:
Parts will be marked
SINCERA.
(This is the brand name.)
World Products Inc.
19654 Eighth Street East, Sonoma, CA 95476 | Phone (707) 996-5201 | Fax (707) 996-3380 | www.worldproducts.com
Protection Products Catalog |
127
Rev. 9.0 (02.19.08)
模拟电子
京公网安备 11010802033920号
Copyright © 2005-2026 EEWORLD.com.cn, Inc. All rights reserved
电子工程世界
