SMOV25S Series - Thermally Protected Varistors

Roll Over to Zoom
Disclaimer Notice

Littelfuse products are not designed for, and shall not be used for, any purpose (including, without limitation, automotive, military, aerospace, medical, life-saving, life-sustaining or nuclear facility applications, devices intended for surgical implant into the body, or any other application in which the failure or lack of desired operation of the product may result in personal injury, death, or property damage) other than those expressly set forth in applicable Littelfuse product documentation. Warranties granted by Littelfuse shall be deemed void for products used for any purpose not expressly set forth in applicable Littelfuse documentation. Littelfuse shall not be liable for any claims or damages arising out of products used in applications not expressly intended by Littelfuse as set forth in applicable Littelfuse documentation. The sale and use of Littelfuse products is subject to Littelfuse Terms and Conditions of Sale, unless otherwise agreed by Littelfuse. "Littelfuse" includes Littelfuse, Inc., and all of its affiliate entities.

Thermally protected SMOV25S Varistor Series for overvoltage circuit protection

The SMOV25S Varistor Series offer an integrated thermal disconnect designed to open in the event of overheating due to abnormal overvoltage as outlined in UL1449 (3rd edition). These devices possess a separate micro-switch that can be used to indicate when the MOV is disconnected from the circuit.

Features:
  • Facilitates compliance with the 3rd edition of UL1449 for SPD products
  • High peak surge current handling capability and high energy absorption capability
  • Intermediate current: 50A/150A; Nominal Discharge Current Value: 10 kA (SMOV25S) and 20kA (SMOV34S),recognized by UL 1449. UL file number: E320116
  • Compact design of MOV and switch
  • Lead-free and RoHS compliant

Applications:
  • Surge protection devices
  • AC panel protection modules
  • Power transfer switches
  • AC/DC power distribution systems
  • Photovoltaic systems
  • Cell phone base stations

Access specifications, certifications, check availability and order parts below

Catalog #VMAX AC (V)VMAX DC (V)WTM (J)(ITM 1xAmps (A)ITM 2xAmps (A)VNDC
(V)
VNDC MIN
(V)
VNDC MAX (V)Vc (V)PolarityLead FormPartner ECAD ModelsStockSamplesCompare
SMOV25S111MP1151501702000015000180162198295Bi-directionalStraightSMOV25S111MPCheckOrder
SMOV25S131MP1301701902000015000205184226335Bi-directionalStraightSMOV25S131MPCheckOrder
SMOV25S151MP1502002202000015000240216264390Bi-directionalStraightSMOV25S151MPCheckOrder
SMOV25S181MP1752252502000015000270243297450Bi-directionalStraightSMOV25S181MPCheckOrder
SMOV25S251MP2503203302000015000390351429640Bi-directionalStraightSMOV25S251MPCheckOrder
SMOV25S271MP2753503502000015000430387473700Bi-directionalStraightSMOV25S271MPCheckOrder
SMOV25S301MP3003853702000015000470423517765Bi-directionalStraightSMOV25S301MPCheckOrder
SMOV25S321MP3204203902000015000510459561825Bi-directionalStraightSMOV25S321MPCheckOrder
SMOV25S421MP42056046020000150006806127481100Bi-directionalStraightSMOV25S421MPCheckOrder
SMOV25S461MP46061549020000150007506758251220Bi-directionalStraightSMOV25S461MPCheckOrder
SMOV25S511MP51067052020000150008207389021335Bi-directionalStraightSMOV25S511MPCheckOrder
SMOV25S551MP550745550200001500091081910011475Bi-directionalStraightSMOV25S551MPCheckOrder
SMOV25S621MP6208008402000015000100090011001625Bi-directionalStraightSMOV25S621MPCheckOrder
SMOV25S751MP75097067020000150001200108013201950Bi-directionalStraightSMOV25S751MPCheckOrder
Part # Part Description RoHS Pb-free RoHS (2015/ 863/EU) Certificate REACH (SVHC’s) Declaration Halogen Free REACH (SVHC’s)
SMOV25S111MP THERMALLY PROTECTED VARISTOR SMOV25S RoHS No 08/10/2011 PbFree No 08/10/2011 No
08/14/2012
SMOV25S131MP THERMALLY PROTECTED VARISTOR SMOV25S RoHS No 08/10/2011 PbFree No 08/10/2011 No
08/14/2012
SMOV25S151MP THERMALLY PROTECTED VARISTOR SMOV25S RoHS No 08/10/2011 PbFree No 08/10/2011 No
08/14/2012
SMOV25S181MP THERMALLY PROTECTED VARISTOR SMOV25S RoHS No 08/10/2011 PbFree No 08/10/2011 No
08/14/2012
SMOV25S251MP THERMALLY PROTECTED VARISTOR SMOV25S RoHS No 08/10/2011 PbFree No 08/10/2011 No
08/14/2012
SMOV25S271MP THERMALLY PROTECTED VARISTOR SMOV25S RoHS No 08/10/2011 PbFree No 08/10/2011 No
08/14/2012
SMOV25S301MP THERMALLY PROTECTED VARISTOR SMOV25S RoHS No 08/10/2011 PbFree No 08/10/2011 No
08/14/2012
SMOV25S321MP THERMALLY PROTECTED VARISTOR SMOV25S RoHS No 08/10/2011 PbFree No 08/10/2011 No
08/14/2012
SMOV25S421MP THERMALLY PROTECTED VARISTOR SMOV25S RoHS No 08/10/2011 PbFree No 08/10/2011 No
08/14/2012
SMOV25S461MP THERMALLY PROTECTED VARISTOR SMOV25S RoHS No 08/10/2011 PbFree No 08/10/2011 No
08/14/2012
SMOV25S511MP THERMALLY PROTECTED VARISTOR SMOV25S RoHS No 08/10/2011 PbFree No 08/10/2011 No
08/14/2012
SMOV25S551MP THERMALLY PROTECTED VARISTOR SMOV25S RoHS No 08/10/2011 PbFree No 08/10/2011 No
08/14/2012
SMOV25S621MP THERMALLY PROTECTED VARISTOR SMOV25S RoHS No 08/10/2011 PbFree No 08/10/2011 CoC_RoHS10_SMOV25S621MP_09-21-2021 REACH219_Declaration_SMOV25S621MP_09-21-2021 No
08/14/2012
Does not Contain
SMOV25S751MP THERMALLY PROTECTED VARISTOR SMOV25S RoHS No 08/10/2011 PbFree No 08/10/2011 No
08/14/2012
If the product environmental information that you are looking for does not appear in this tab,
please complete the Product Environmental Information Request Form.

pdficon Product Selection Guide

Electronics Circuit Protection Product Selection Guide - A guide to selecting Littelfuse circuit protection components for electronic applications...

pdficon Circuit Protection Technology Application Matrix

Littelfuse is the world leader in the design and manufacturing of fuses for the automotive industrial handheld computer and telecom markets...

pdficon Varistors SMOV25S Datasheet

pdficon Varistors Catalog

Catalog with varistors metal oxide varistors multilayer varistors MLVs surface mount varistors radial lead varistors disc varistors industrial varistors high energy varistors...