ROV05-180M-S-2 Equivalent & Substitute Parts

Part Overview

The ROV05-180M-S-2 is an 18V 100A varistor manufactured by Littelfuse Inc., designed for transient voltage suppression in through-hole disc applications with a 5mm package footprint. This component is classified as obsolete, necessitating identification of active equivalent parts to maintain design continuity and ensure ongoing component availability for production and repair applications.

Substiute Parts

ROV05-180M-S-2

Littelfuse Inc.In Stock: 919ROV05-180M-S-2 Datasheet

Current PartRFQ

ERZ-V05D180

Panasonic Electronic ComponentsIn Stock: 15053ERZ-V05D180 Datasheet

DirectRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution eligibility for the ROV05-180M-S-2 is determined by the following critical parameters:

• Varistor Voltage (Typical): 18 V nominal specification
• Maximum AC/DC Voltage Ratings: 11 V AC / 14 V DC maximum
• Operating Temperature Range: -40°C ~ 85°C
• Mounting Type: Through Hole configuration
• RoHS Compliance: ROHS3 Compliant status

The ERZ-V05D180 from Panasonic Electronic Components meets these core substitution criteria. While the surge current rating (250 A) exceeds the original specification and the package footprint differs (7mm disc versus 5mm disc), the electrical operating parameters, voltage ratings, temperature range, and compliance certifications align with the functional requirements of the ROV05-180M-S-2.

Parameter Comparison

Engineering Selection Recommendations

The ERZ-V05D180 is an active substitute for the obsolete ROV05-180M-S-2. Both components maintain identical maximum AC/DC voltage ratings (11 V AC / 14 V DC), matching varistor voltage nominal specification (18 V), equivalent energy rating (0.6 J), and identical operating temperature range (-40°C ~ 85°C). Both components are ROHS3 Compliant and carry REACH Unaffected status.

The ERZ-V05D180 provides enhanced surge current capacity (250 A versus 100 A), which represents a performance improvement over the original specification. The package footprint difference (7mm disc versus 5mm disc) requires physical layout verification to confirm PCB mounting compatibility. The increased capacitance at 1 kHz (1600 pF versus 1120 pF) must be evaluated within the context of the specific circuit application to determine if this parameter change affects system performance.

Frequently Asked Questions (FAQ)

Q: Can the ERZ-V05D180 directly replace the ROV05-180M-S-2 in existing designs?

A: Electrical substitution is valid based on matching voltage ratings, temperature range, and compliance certifications. Physical substitution requires verification that the 7mm disc package fits the existing PCB footprint designed for the 5mm disc package.

Q: What is the significance of the higher surge current rating in the ERZ-V05D180?

A: The 250 A surge current rating in the ERZ-V05D180 exceeds the original 100 A specification. This represents enhanced transient suppression capability and does not create incompatibility with the original design intent.

Q: Are there compliance or regulatory differences between these parts?

A: Both components are ROHS3 Compliant, REACH Unaffected, and carry identical ECCN (EAR99) and HTSUS (8533.40.4000) classifications. No regulatory barriers exist to substitution.

Q: How does the capacitance difference affect circuit performance?

A: The ERZ-V05D180 exhibits 1600 pF capacitance at 1 kHz compared to 1120 pF in the ROV05-180M-S-2. Circuit-specific analysis is required to determine if this 480 pF increase impacts frequency response, signal integrity, or filtering characteristics in the target application.

Q: What is the availability status of each component?

A: The ROV05-180M-S-2 is obsolete with 844 pieces in stock. The ERZ-V05D180 is active with 15,029 pieces in stock, ensuring long-term supply chain continuity.