Document
Metal-Oxide Varistors (MOVs)
Radial Lead Varistors > TMOV® and iTMOV® Varistor Series
TMOV® and iTMOV® Varistor Series
RoHS
Agency Approvals
Agency
Agency Approval
UL1449
QC 42201-C001, QC 42201-A001, IEC 60950-1 (Annex Q)
IEC 61051-1, IEC 61051-2, IEC 60950-1 (Annex Q)
Agency File Number E320116
IECQ-C BSI 15.0009
40021525
Additional Information
Datasheet iTMOV
Resources iTMOV
Datasheet TMOV
Resources TMOV
Samples iTMOV
Samples TMOV
Description
The Littelfuse TMOV® and iTMOV® thermally protected varistors represent a new development in integrated circuit protection. Both versions are comprised of radial leaded Metal Oxide Varistors (MOVs) with an integrated thermally activated element designed to open in the event of overheating due to the abnormal overvoltage, limited current, conditions outlined in UL1449. The TMOV® and iTMOV® varistor’s integrated thermal element, in conjunction with appropriate enclosure design, helps facilitate SPD module compliance to UL1449 for both cord connected and permanently connected applications.
The TMOV® and iTMOV® varistors offer quick thermal response due to the close proximity of the integrated thermal element to the MOV body. The integrated configuration also offers lower inductance than most discrete solutions resulting in improved clamping performance to fast overvoltage transients.
The iTMOV® varistor differs from the TMOV® varistor by the inclusion of a third lead for the purpose of indicating that the MOV has been disconnected from the circuit. This lead facilitates connection to monitoring circuitry.
Additionally TMOV® and iTMOV® varistors are wave solderable, thus simplifying end product assembly by reducing the the expense and rework associated with hand soldering operations.
Features
• RoHS compliant Halogen-Free and Lead–free available
• Designed to facilitate compliance to UL1449 for SPD products
• High peak surge current rating up to 10kA
• Wave solderable • Standard lead form
and spacing option
Applications
• SPD Products • AC Panel Protection
Modules • AC Line Power Supplies • Surge Protected
Strip Connectors • AC Power Meters • Relocatable AC
Power Taps
• -55°C to +85°C operating temp range
• Three-lead version available for indication purposes
• GFCI (Ground Fault Current Interupter)
• UPS (Uninterruptable Power Supply)
• White Goods • Plug-in SPD • Inverters • AC/DC Power Supplies
© 2019 Littelfuse, Inc. Specifications are subject to change without notice.
Revised: 10/01/19
Metal-Oxide Varistors (MOVs)
Radial Lead Varistors > TMOV® and iTMOV® Varistor Series
Absolute Maximum Ratings
• For ratings of individual members of a series, see Device Ratings and Specifications chart
Continuous
TMOV® and iTMOV® Varistor Series
Steady State Applied Voltage
AC Voltage Range (VM(AC)RMS) Transient
115 to 750
Peak Pulse Current (ITM) - For 8x20µs Current Wave, single pulse Single-Pulse Energy Capability - For 2ms Current Wave
6,000 to 10,000 35 to 480
Operating Ambient Temperature.