ROV10-112K-S Equivalent & Substitute Parts

Part Overview

The ROV10-112K-S is a 1.1 kV, 2.5 kA disc varistor manufactured by Littelfuse Inc., designed for transient voltage suppression in through-hole applications with a 10mm package form factor. This component is classified as obsolete, making identification of functionally equivalent alternatives necessary for ongoing system support and new design implementations where this specific part number is no longer available from the original manufacturer.

Substiute Parts

ROV10-112K-S

Littelfuse Inc.In Stock: 931ROV10-112K-S Datasheet

Current PartRFQ

B72210S0681K101

EPCOS - TDK ElectronicsIn Stock: 6713B72210S0681K101 Datasheet

MFR RecommendedRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution of the ROV10-112K-S is determined by strict equivalence across the following electrical and mechanical parameters:

• Varistor voltage rating within the specified range (990 V – 1.21 kV nominal 1.1 kV)
• Surge current capacity of 2.5 kA minimum
• Maximum AC and DC voltage ratings (680 V AC, 895 V DC)
• Through-hole mounting configuration
• Disc 10mm package form factor
• Single-circuit configuration
• RoHS3 compliance and REACH unaffected status

The B72210S0681K101 manufactured by EPCOS - TDK Electronics meets all these criteria and is designated as the manufacturer-recommended substitute.

Parameter Comparison

Engineering Selection Recommendations

The B72210S0681K101 is the appropriate substitute for the ROV10-112K-S based on the following factors:

• All critical electrical parameters (varistor voltage, surge current, maximum AC/DC ratings) are identical
• Both components maintain ROHS3 compliance and REACH unaffected status
• The substitute maintains through-hole mounting and 10mm disc package compatibility
• The substitute is currently in active production status with 6677 units in stock, ensuring supply chain continuity
• The extended operating temperature range (-40°C to 105°C versus -40°C to 85°C) provides additional thermal margin
• The substitute is available in bulk packaging, suitable for production environments

Frequently Asked Questions (FAQ)

Q: Can the B72210S0681K101 be used as a direct replacement for the ROV10-112K-S in existing designs?

A: Yes. The B72210S0681K101 meets all specified electrical and mechanical parameters. Both components share identical varistor voltage ratings, surge current capacity, maximum voltage ratings, and package form factor. No circuit modifications are required.

Q: What is the significance of the energy absorption difference (124 J vs. 72 J)?

A: Energy absorption is provided in the parameter set but does not affect substitution eligibility. Both components meet the specified surge current and voltage requirements. The difference reflects manufacturing variations between the two designs.

Q: Does the higher operating temperature range of the B72210S0681K101 affect compatibility?

A: No. The extended temperature range (-40°C to 105°C) is a superset of the original specification (-40°C to 85°C). This provides additional operational margin and does not compromise compatibility.

Q: Are there packaging differences between the two parts?

A: Both components use identical through-hole disc 10mm packaging. The B72210S0681K101 is supplied in bulk packaging, while the original ROV10-112K-S packaging format is not specified in the available data.

Q: What is the difference in capacitance between these parts?

A: The B72210S0681K101 has a capacitance of 100 pF @ 1 kHz compared to 88 pF @ 1 kHz for the ROV10-112K-S. This minor difference does not affect substitution eligibility for transient voltage suppression applications.