ROV10-182K Equivalent & Substitute Parts

Part Overview

The ROV10-182K is a 1.8 kV, 2.5 kA varistor manufactured by Littelfuse Inc., designed for transient voltage suppression in through-hole disc applications. This component is classified as obsolete, making identification of functionally equivalent alternatives essential for ongoing system support and new design implementations. The varistor provides single-circuit protection with a nominal voltage rating of 1.8 kV and surge current capacity of 2.5 kA, suitable for AC and DC voltage suppression applications within specified operating ranges.

Substiute Parts

ROV10-182K

Littelfuse Inc.In Stock: 1270ROV10-182K Datasheet

Current PartRFQ

ERZ-V10D182

Panasonic Electronic ComponentsIn Stock: 2147ERZ-V10D182 Datasheet

MFR RecommendedRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution of the ROV10-182K is determined by alignment of the following critical electrical and mechanical parameters:

Electrical Compatibility Criteria:

• Varistor voltage rating (nominal 1.8 kV, with tolerance range 1.62 kV to 1.98 kV)
• Maximum AC voltage (1 kV)
• Maximum DC voltage (1.465 kV)
• Operating temperature range (-40°C to 85°C)
• Number of circuits (1)

Mechanical Compatibility Criteria:

• Mounting type (Through Hole)
• Package form factor (Disc configuration)

Performance Considerations:

• Surge current capacity (minimum 2.5 kA)
• Energy absorption capability (minimum 174 J)

The ERZ-V10D182 from Panasonic Electronic Components meets all electrical compatibility requirements and maintains through-hole disc mounting. While the package dimensions differ (14.6mm vs. 10mm), the electrical performance envelope and functional characteristics align with the ROV10-182K specifications.

Parameter Comparison

Engineering Selection Recommendations

The ERZ-V10D182 is a direct functional equivalent for the obsolete ROV10-182K based on electrical parameter alignment. Both components maintain identical maximum voltage ratings, operating temperature ranges, and circuit configuration. The ERZ-V10D182 provides enhanced surge current capacity (4.6 kA vs. 2.5 kA) and marginally higher energy absorption (183 J vs. 174 J), representing improved performance characteristics within the same voltage class.

Both components carry ROHS3 compliance and REACH unaffected status, ensuring regulatory alignment for current manufacturing standards. The primary design consideration is the package footprint difference: the ERZ-V10D182 uses a 14.6mm disc versus the 10mm disc of the ROV10-182K. PCB layout and mechanical clearance must accommodate this dimensional change during substitution.

Frequently Asked Questions (FAQ)

Q: Can the ERZ-V10D182 directly replace the ROV10-182K in existing designs?

A: Electrical substitution is valid based on voltage rating, current capacity, and operating temperature alignment. Mechanical substitution requires PCB layout verification due to the increased package diameter (14.6mm vs. 10mm). Clearance around the component mounting location must be confirmed before implementation.

Q: What is the significance of the higher surge current rating on the ERZ-V10D182?

A: The ERZ-V10D182 is rated for 4.6 kA surge current compared to the ROV10-182K's 2.5 kA. This represents enhanced transient suppression capability and provides additional design margin for applications experiencing high-energy transient events within the 1.8 kV voltage class.

Q: Are there compliance differences between these components?

A: Both components are ROHS3 compliant and REACH unaffected. No regulatory compliance barriers exist for substitution in applications requiring these certifications.

Q: How do the varistor voltage tolerances compare?

A: Both components share identical maximum varistor voltage (1.98 kV) and typical rating (1.8 kV). The ERZ-V10D182 has a slightly higher minimum rating (1.7 kV vs. 1.62 kV), which remains within acceptable tolerance for 1.8 kV class applications.

Q: What packaging considerations apply to this substitution?

A: Both components use through-hole disc mounting. The primary consideration is the physical diameter increase from 10mm to 14.6mm. Verify PCB pad spacing, component clearance to adjacent parts, and mechanical mounting constraints before design implementation.