TMOV20R575M Equivalent & Substitute Parts

Part Overview

The TMOV20R575M is a 952 V, 10 kA disc varistor manufactured by Littelfuse Inc. in the iTMOV® series. This component is designed for transient voltage suppression applications requiring through-hole mounting in a 20mm disc package with 3-lead configuration. The main part is currently obsolete, making equivalent substitute parts necessary for ongoing system support and new designs requiring identical electrical and mechanical performance.

Key Parameters

Parameter	Value
Varistor Voltage (Typical)	952 V
Current - Surge	10 kA
Maximum AC Volts	575 V
Maximum DC Volts	730 V
Energy	375 J
Operating Temperature Range	-55°C to 85°C
Mounting Type	Through Hole
Package / Case	Disc 20mm 3-Lead
Capacitance @ 1 MHz	275 pF
Features	Thermally Protected

Substitute Part Grouping Explanation

Substitution for the TMOV20R575M is determined by strict equivalence across all critical electrical and mechanical parameters. The allowed substitution criteria are:

Varistor voltage range: 857 V (Min) to 1.047 kV (Max)
Surge current capacity: 10 kA
Maximum AC/DC voltage ratings: 575 V AC / 730 V DC
Energy dissipation: 375 J
Package configuration: Disc 20mm 3-Lead through-hole mounting
Operating temperature: -55°C to 85°C
Thermal protection feature requirement
Capacitance: 275 pF @ 1 MHz

Both substitute parts meet these criteria and are manufactured by Littelfuse Inc. within the iTMOV® series, ensuring functional and mechanical compatibility.

Parameter Comparison

Parameter	TMOV20R575M	TMOV20RP575M	TMOV20RP575ML2B7
Manufacturer	Littelfuse Inc.	Littelfuse Inc.	Littelfuse Inc.
Series	iTMOV®	iTMOV®	iTMOV®
Varistor Voltage (Typ)	952 V	952 V	952 V
Varistor Voltage Range	857 V - 1.047 kV	857 V - 1.047 kV	857 V - 1.047 kV
Current - Surge	10 kA	10 kA	10 kA
Maximum AC Volts	575 V	575 V	575 V
Maximum DC Volts	730 V	730 V	730 V
Energy	375 J	375 J	375 J
Operating Temperature	-55°C to 85°C	-55°C to 85°C	-55°C to 85°C
Mounting Type	Through Hole	Through Hole	Through Hole
Package / Case	Disc 20mm 3-Lead	Disc 20mm 3-Lead	Disc 20mm 3-Lead
Capacitance @ 1 MHz	275 pF	275 pF	275 pF
Features	Thermally Protected	Thermally Protected	Thermally Protected
Product Status	Obsolete	Active	Active
RoHS Status	RoHS non-compliant	ROHS3 Compliant	ROHS3 Compliant

Engineering Selection Recommendations

TMOV20RP575M and TMOV20RP575ML2B7 are direct functional equivalents to the obsolete TMOV20R575M. Both substitute parts are active products with identical electrical specifications and mechanical configuration.

For new designs and ongoing system support, TMOV20RP575M or TMOV20RP575ML2B7 should be selected. Both parts offer ROHS3 compliance, addressing regulatory requirements that the original TMOV20R575M does not meet. Selection between the two substitute parts may be determined by packaging requirements (bulk) and specific application certifications, as both maintain identical performance parameters.

Frequently Asked Questions (FAQ)

Q: Can TMOV20RP575M directly replace TMOV20R575M in existing designs?

A: Yes. TMOV20RP575M provides identical electrical performance (952 V typical varistor voltage, 10 kA surge current, 375 J energy) and mechanical configuration (Disc 20mm 3-Lead through-hole mounting). The primary difference is product status (active vs. obsolete) and improved RoHS compliance.

Q: What is the difference between TMOV20RP575M and TMOV20RP575ML2B7?

A: Both parts are parametrically equivalent with identical electrical and mechanical specifications. Differences are limited to packaging designation and potential application-specific certifications. Both are active products with ROHS3 compliance.

Q: Are there any compatibility concerns when substituting these parts?

A: No compatibility concerns exist when substituting either TMOV20RP575M or TMOV20RP575ML2B7 for TMOV20R575M. All three parts share identical varistor voltage ranges, surge current capacity, thermal protection features, and through-hole disc package configuration.

Q: Does the RoHS compliance difference affect electrical performance?

A: No. RoHS compliance status reflects manufacturing process and material composition standards, not electrical performance. Both ROHS3-compliant substitutes deliver identical electrical characteristics to the original part.

Q: What inventory considerations apply to these substitutes?

A: TMOV20RP575M has 1062 units in stock, and TMOV20RP575ML2B7 has 961 units in stock, compared to 766 units of the obsolete TMOV20R575M. Both substitutes offer improved availability for ongoing procurement.

Request Quote (Ships tomorrow)

Part Number

Quantity

Company

Contact Name

E-mail

Message