SMOV25S511NP Datasheet, PDF (1/6 Pages) Littelfuse – SMOV25S Varistor Series

Varistor Products
Thermally Protected Varistors > SMOV25S Series
SMOV25S Varistor Series
RoHS
Agency Approvals
Agency
Agency File Number
E320116
Description
The Littelfuse SMOV thermally protected varistor is a self-
protected device. It consists of a 25mm square varistor with an
integral thermal disconnect designed to open in the event of
overheating due to abnormal overvoltage as outlined in UL1449
3rd edition. The SMOV helps facilitate SPD module compliance
to UL1449 and offers quick thermal response due to the close
proximity of the integrated thermal element to the MOV body.
This configuration also offers lower inductance than most discreet
solutions resulting in improved clamping performance to fast over
voltage transients.
The device has a separate micro-switch, which can be used to
indicate that the MOV has been disconnected from the circuit. This
separate switch makes the monitoring circuitry completely isolated
from the main power which ensures indicator circuit safety and
simplifies the customers circuit design.
Features
• Maximum single
surge capability 20 kA,
8/20 waveshape.
• Nominal Discharge
Current Value: 10kA.
• Intermediate current
rating: 50A/150A.
• -45°C to +75°C operating
temperature.
Applications
• SPD applications
• AC/DC distribution
• IT/Data center
• Power supplier
• Telecommunication
• Recognized to UL
1449 3rd edition.
• Lead-Free and RoHS
compliant.
• Integrated micro-switch for
indication circuitry/design.
Absolute Maximum Ratings
• For ratings of individual members of a series, see Device Ratings and Specifications chart.
Continous:
Steady State Applied Voltage:
DC Voltage Range (VM(DC))
Transient:
AC Voltage Range (V_M(AC)RMS)
Non-Repetitive Surge Current, 8/20µs Waveform (I_TM)
Non-Repetitive Energy Capability, 2ms Waveform (W_TM)
Operating Ambient Temperature Range (T_A)
Storage Temperature Range (T_STG)
Hi-Pot Encapsulation (Isolation Voltage Capability)
SMOV25S Series
150 to 970
115 to 750
20,000
170 to 670
-45 to +75
-45 to +85
2500
Units
V
V
A
J
°C
°C
V
Isolation Voltage Capability (when the thermal disconnect opens)
Housing Insulation Resistance
1500
V
>1,000
MΩ
CAUTION: Stresses above those listed in “Absolute Maximum Ratings” may cause permanent damage to the device. This is a stress only rating and operation
of the device at these or any other conditions above those indicated in the operational sections of this specification is not implied.
© 2014 Littelfuse, Inc.
Specifications are subject to change without notice.
Revised: 05/23/14