TMOV20R175M Equivalent & Substitute Parts

Part Overview

The TMOV20R175M is a 270V 10kA varistor manufactured by Littelfuse, designed for transient voltage suppression applications. This component features a through-hole disc mounting configuration with thermally protected operation across -55°C to 85°C. The part is currently classified as obsolete, which necessitates identification of functionally equivalent alternatives for ongoing system support and new designs.

Substiute Parts

TMOV20R175M

LittelfuseIn Stock: 879TMOV20R175M Datasheet

Current PartRFQ

TMOV20RP175M

Littelfuse Inc.In Stock: 3398TMOV20RP175M Datasheet

DirectRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution of the TMOV20R175M is determined by electrical and mechanical parameter equivalence within the iTMOV® series. The substitute part must maintain identical specifications across the following critical parameters:

• Varistor voltage rating (243V minimum, 270V typical, 297V maximum)
• Surge current capacity (10 kA)
• Energy absorption (135 J)
• Mounting configuration (through-hole disc 20mm 3-lead)
• Operating temperature range (-55°C to 85°C)
• Thermal protection feature
• Single-circuit configuration

The TMOV20RP175M meets all these requirements and is classified as an active product, making it a direct functional equivalent.

Parameter Comparison

Engineering Selection Recommendations

The TMOV20RP175M is the direct equivalent for the obsolete TMOV20R175M. Both components share identical electrical and mechanical specifications, ensuring pin-for-pin and functional compatibility in existing circuit designs.

The primary distinction between these parts is product status and regulatory compliance. The TMOV20RP175M is an active product with ROHS3 compliance and REACH unaffected status, making it suitable for new designs and systems requiring current regulatory adherence. The TMOV20R175M, classified as obsolete and RoHS non-compliant, should be replaced with the TMOV20RP175M for ongoing production and support.

Frequently Asked Questions (FAQ)

Q: Can TMOV20RP175M be used as a direct replacement for TMOV20R175M?

A: Yes. Both components are electrically and mechanically identical across all specified parameters, including varistor voltage, surge current capacity, energy rating, and physical package configuration. Direct substitution is supported without circuit modification.

Q: What is the difference between TMOV20R175M and TMOV20RP175M?

A: The components are functionally equivalent. The primary differences are product status (obsolete versus active) and regulatory compliance (RoHS non-compliant versus ROHS3 compliant). The TMOV20RP175M is the recommended choice for new applications.

Q: Are there any packaging differences between these parts?

A: No. Both parts use identical through-hole disc 20mm 3-lead packaging. Physical dimensions, lead spacing, and mounting characteristics are equivalent.

Q: Does the TMOV20RP175M meet current regulatory requirements?

A: Yes. The TMOV20RP175M is ROHS3 compliant and REACH unaffected, meeting current regulatory standards for electronic components.

Q: What parameters determine substitution eligibility for varistors in this series?

A: Substitution is determined by matching varistor voltage rating, surge current capacity, energy absorption, mounting configuration, operating temperature range, and circuit count. All these parameters must be identical for direct substitution.