ROV20-560L Equivalent & Substitute Parts

Part Overview

The ROV20-560L is a 56 V, 2 kA varistor manufactured by Littelfuse Inc., designed for transient voltage suppression in through-hole disc configurations. This component is classified as obsolete, making equivalent substitutes necessary for ongoing design support and procurement. The part operates across a temperature range of -40°C to 125°C and is ROHS3 compliant.

Substiute Parts

ROV20-560L

Littelfuse Inc.In Stock: 831ROV20-560L Datasheet

Current PartRFQ

ERZ-V20D560

Panasonic Electronic ComponentsIn Stock: 1079ERZ-V20D560 Datasheet

MFR RecommendedRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution eligibility for the ROV20-560L is determined by the following critical parameters:

• Varistor voltage rating within the specified range (50 V to 62 V minimum to maximum tolerance)
• Maximum AC and DC voltage ratings of 35 V and 45 V respectively
• Through-hole mounting configuration
• Single-circuit design
• ROHS3 compliance and REACH unaffected status
• Operating temperature compatibility

The ERZ-V20D560 from Panasonic Electronic Components meets these substitution criteria. While the surge current rating (3 kA) and energy rating (41 J) exceed the original specification, these represent improved performance characteristics within the same functional category and do not create incompatibility.

Parameter Comparison

Engineering Selection Recommendations

The ERZ-V20D560 is the primary substitute for the ROV20-560L. Selection is supported by:

• Matching varistor voltage rating at nominal 56 V with overlapping tolerance bands
• Identical maximum AC and DC voltage specifications
• Active product status ensuring long-term availability and supply chain continuity
• Full ROHS3 and REACH compliance alignment
• Through-hole disc configuration compatibility with existing PCB layouts

The ERZ-V20D560 provides enhanced surge current handling (3 kA versus 2 kA) and greater energy absorption capacity (41 J versus 20 J), making it suitable for applications requiring the original ROV20-560L performance envelope.

Frequently Asked Questions (FAQ)

Q: Can the ERZ-V20D560 be used as a direct replacement for the ROV20-560L?

A: Yes. Both components share identical maximum AC and DC voltage ratings, matching varistor voltage at 56 V nominal, and compatible through-hole disc mounting. The substitute offers higher surge current and energy ratings, which do not create incompatibility.

Q: What is the difference in package dimensions between these parts?

A: The ROV20-560L uses a 20mm disc package, while the ERZ-V20D560 uses a 21.5mm disc package. PCB layout verification is required to confirm mechanical fit in existing designs.

Q: Are there temperature range differences between the parts?

A: The ROV20-560L operates from -40°C to 125°C, while the ERZ-V20D560 operates from -40°C to 85°C. Applications requiring operation above 85°C must evaluate thermal requirements against the substitute's maximum operating temperature.

Q: Why is the ERZ-V20D560 rated for higher surge current?

A: The ERZ-V20D560 is rated for 3 kA surge current compared to the ROV20-560L's 2 kA. This represents improved component design within the same functional category and does not prevent substitution in applications originally specified for 2 kA.

Q: Are compliance certifications identical?

A: Both parts are ROHS3 compliant and REACH unaffected. Compliance status is equivalent for regulatory purposes.