ROV07-180M-S Equivalent & Substitute Parts

Part Overview

The ROV07-180M-S is a 18V 250A disc varistor manufactured by Littelfuse, designed for transient voltage suppression in through-hole applications. This component is classified as obsolete, necessitating identification of active equivalent parts for ongoing design requirements and procurement needs. The varistor provides single-circuit protection with a 7mm disc package form factor and operates across the temperature range of -40°C to 125°C.

Substiute Parts

ROV07-180M-S

LittelfuseIn Stock: 1064ROV07-180M-S Datasheet

Current PartRFQ

ERZ-V07D180

Panasonic Electronic ComponentsIn Stock: 5008ERZ-V07D180 Datasheet

MFR RecommendedRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution of the ROV07-180M-S is determined by the following critical parameters:

• Varistor Voltage (Typ): Must match at 18 V to maintain circuit protection characteristics
• Maximum AC/DC Volts: Must not exceed 11 V AC and 14 V DC respectively
• Number of Circuits: Must be 1 circuit configuration
• Mounting Type: Must be Through Hole to maintain PCB compatibility
• Package Category: Disc form factor with compatible dimensions
• RoHS Compliance: Must maintain ROHS3 Compliant status
• Operating Temperature Range: Must support the required thermal envelope

The ERZ-V07D180 from Panasonic Electronic Components meets these substitution criteria while offering enhanced surge current capability and active product status.

Parameter Comparison

Engineering Selection Recommendations

The ERZ-V07D180 is a direct functional substitute for the ROV07-180M-S based on matching varistor voltage specifications and electrical ratings. Both components maintain ROHS3 compliance and are suitable for equivalent circuit protection applications.

The ERZ-V07D180 carries active product status, ensuring long-term availability and supply chain continuity compared to the obsolete ROV07-180M-S. The substitute provides enhanced surge current handling at 500 A versus 250 A, offering improved transient protection margin.

Physical package dimensions differ slightly (8.5mm versus 7mm disc), requiring verification of PCB layout compatibility. The operating temperature range of the substitute extends to 85°C maximum, which is lower than the original part's 125°C rating and must be evaluated against application thermal requirements.

Frequently Asked Questions (FAQ)

Q: Can the ERZ-V07D180 be used as a direct replacement for the ROV07-180M-S?

A: The ERZ-V07D180 is electrically compatible based on matching 18 V typical varistor voltage and equivalent maximum AC/DC voltage ratings. Physical package dimensions differ (8.5mm versus 7mm), requiring PCB layout verification before implementation.

Q: What are the key differences between these two varistors?

A: The primary differences are: surge current rating (500 A versus 250 A), package diameter (8.5mm versus 7mm), maximum operating temperature (85°C versus 125°C), and product status (active versus obsolete). Varistor voltage specifications and voltage ratings remain equivalent.

Q: Does the higher surge current rating of the ERZ-V07D180 affect circuit performance?

A: The increased surge current capability of 500 A does not negatively affect circuit performance. This enhancement provides greater transient protection margin without altering the varistor voltage response characteristics.

Q: Are both parts RoHS compliant?

A: Yes, both the ROV07-180M-S and ERZ-V07D180 maintain ROHS3 compliance status.

Q: What should be considered when switching from the ROV07-180M-S to the ERZ-V07D180?

A: Verify PCB layout compatibility with the 8.5mm disc package dimension. Confirm that the maximum operating temperature of 85°C meets application requirements. Both components share equivalent electrical characteristics for 18 V varistor voltage protection.