ROV10-102K Equivalent & Substitute Parts

Part Overview

The ROV10-102K is a 1 kV, 2.5 kA varistor manufactured by Littelfuse Inc., designed for transient voltage suppression applications. This component features a through-hole disc package (10mm) and is rated for surge currents up to 2.5 kA with energy absorption of 112J. The product is currently obsolete, making identification of suitable substitute components essential for ongoing system maintenance and new design implementations where equivalent performance is required.

Substiute Parts

ROV10-102K

Littelfuse Inc.In Stock: 1054ROV10-102K Datasheet

Current PartRFQ

ERZ-V10D102

Panasonic Electronic ComponentsIn Stock: 54285ERZ-V10D102 Datasheet

MFR RecommendedRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution of the ROV10-102K is determined by the following critical electrical and mechanical parameters:

• Varistor Voltage Range: Minimum 900 V, Typical 1 kV, Maximum 1.1 kV
• Maximum DC Voltage Rating: 825 V
• Maximum AC Voltage Rating: 625 V
• Operating Temperature Range: -40°C to 85°C
• Mounting Configuration: Through Hole
• Number of Circuits: Single circuit (1)
• Regulatory Compliance: ROHS3 Compliant, REACH Unaffected

The ERZ-V10D102 from Panasonic Electronic Components meets all specified electrical parameters within the allowed tolerance bands. While the surge current rating (4.6 kA) and energy absorption (140J) exceed the original specification, these represent enhanced performance characteristics that maintain backward compatibility. The package footprint differs (12.50mm disc versus 10mm disc), requiring mechanical verification for board-level integration.

Parameter Comparison

Engineering Selection Recommendations

The ERZ-V10D102 is the manufacturer-recommended substitute for the obsolete ROV10-102K. Both components maintain identical varistor voltage specifications (900 V to 1.1 kV range) and voltage ratings (625 V AC / 825 V DC), ensuring electrical compatibility in transient voltage suppression circuits.

The ERZ-V10D102 offers enhanced surge current handling (4.6 kA versus 2.5 kA) and greater energy absorption capacity (140J versus 112J), providing improved performance margins without compromising the original design intent. Both components are ROHS3 compliant and REACH unaffected, meeting current regulatory requirements.

The primary consideration for implementation is the package footprint change from 10mm to 12.50mm disc diameter. PCB layout verification is necessary to confirm mechanical fit within existing mounting holes and clearance requirements.

Frequently Asked Questions (FAQ)

Q: Can the ERZ-V10D102 be used as a direct replacement for the ROV10-102K?

A: Electrical substitution is valid. The varistor voltage range, maximum voltage ratings, and operating temperature specifications are identical. Mechanical verification of the 12.50mm disc package against the original 10mm footprint is required before implementation.

Q: What is the significance of the higher surge current rating (4.6 kA vs 2.5 kA)?

A: The ERZ-V10D102 provides enhanced transient suppression capability. This represents improved performance and does not create incompatibility with circuits designed for the 2.5 kA specification.

Q: Are there compliance differences between the two parts?

A: Both components are ROHS3 compliant and REACH unaffected. No compliance barriers exist for substitution.

Q: Does the capacitance difference (110 pF vs 96 pF) affect circuit performance?

A: The capacitance values are provided at 1 kHz. The 14 pF difference is within typical varistor manufacturing tolerances and does not constitute a functional incompatibility for standard transient voltage suppression applications.

Q: What should be verified before finalizing the substitution?

A: Confirm PCB mounting hole spacing and clearance accommodate the 12.50mm disc package. Verify circuit board layout does not impose spatial constraints that would prevent physical installation.