ROV07-331K-AP Equivalent & Substitute Parts

Part Overview

The ROV07-331K-AP is a 330V 1.2kA disc varistor manufactured by Littelfuse Inc., designed for transient voltage suppression in through-hole applications. This component is classified as obsolete, making equivalent substitutes necessary for ongoing production and maintenance requirements. The part operates across a temperature range of -40°C to 125°C and is housed in a 7mm disc package.

Substiute Parts

ROV07-331K-AP

Littelfuse Inc.In Stock: 876ROV07-331K-AP Datasheet

Current PartRFQ

ERZ-V07D331

Panasonic Electronic ComponentsIn Stock: 2850ERZ-V07D331 Datasheet

MFR RecommendedRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution of the ROV07-331K-AP is determined by the following critical parameters:

• Varistor voltage rating (nominal 330V) with acceptable tolerance range (297V minimum to 363V maximum)
• Maximum AC and DC voltage ratings (210V AC, 270V DC minimum)
• Surge current capacity (minimum 1.2 kA)
• Through-hole mounting configuration
• Single-circuit design
• Operating temperature compatibility
• RoHS3 compliance and REACH unaffected status

The ERZ-V07D331 meets these substitution criteria while offering enhanced surge current capacity (1.75 kA) and energy handling (28J).

Parameter Comparison

Engineering Selection Recommendations

The ERZ-V07D331 is the designated manufacturer-recommended substitute for the ROV07-331K-AP. Both components maintain identical varistor voltage ratings and circuit configuration. The substitute provides superior surge current handling (1.75 kA versus 1.2 kA) and increased energy dissipation capacity (28J versus 23J), making it suitable for applications requiring equal or greater transient protection.

The ERZ-V07D331 carries active product status, ensuring long-term availability and supply chain continuity. Both parts maintain ROHS3 compliance and REACH unaffected status, satisfying regulatory requirements. The maximum DC voltage specification of the substitute (270V) remains within acceptable tolerance for applications designed for the original 275V rating.

Physical package dimensions differ slightly (8.5mm versus 7mm disc), requiring verification of PCB layout compatibility before implementation.

Frequently Asked Questions (FAQ)

Q: Can the ERZ-V07D331 directly replace the ROV07-331K-AP in all applications?

A: The ERZ-V07D331 meets the electrical substitution criteria for varistor voltage, surge current, and circuit configuration. PCB layout verification is required due to the package dimension difference (8.5mm versus 7mm disc).

Q: What is the significance of the higher surge current rating on the substitute part?

A: The ERZ-V07D331 surge current rating of 1.75 kA exceeds the original 1.2 kA specification, providing enhanced transient protection capability. This represents an improvement in performance margin for the application.

Q: Are there compliance differences between the two parts?

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

Q: Why is the operating temperature range different?

A: The ROV07-331K-AP operates to 125°C while the ERZ-V07D331 operates to 85°C. Applications requiring operation above 85°C require thermal analysis to confirm the substitute is suitable.

Q: What is the impact of the package dimension change?

A: The substitute uses an 8.5mm disc package versus the original 7mm. PCB footprint and mounting hole spacing must be verified for mechanical compatibility.

Q: Is the substitute part currently available?

A: The ERZ-V07D331 is classified as active product status with documented inventory availability, ensuring supply continuity compared to the obsolete original part.