ROV07-151K Equivalent & Substitute Parts

Part Overview

The ROV07-151K is a 150 V, 1.2 kA disc varistor manufactured by Littelfuse Inc., designed for transient voltage suppression in through-hole applications. This component is classified as obsolete, making equivalent substitute parts 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

ROV07-151K

Littelfuse Inc.In Stock: 805ROV07-151K Datasheet

Current PartRFQ

ERZ-V07D151

Panasonic Electronic ComponentsIn Stock: 2229ERZ-V07D151 Datasheet

MFR RecommendedRFQ

VDRS07H095BSE

Vishay Beyschlag/Draloric/BC ComponentsIn Stock: 761VDRS07H095BSE Datasheet

MFR RecommendedRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution for the ROV07-151K is determined by the following critical parameters:

• Varistor Voltage (Typical): 150 V nominal
• Varistor Voltage Range: 135 V minimum to 165 V maximum
• Maximum AC/DC Voltage Ratings: 95 V AC / 125 V DC
• Current - Surge Capability: Minimum 1.2 kA
• Number of Circuits: 1
• Mounting Type: Through Hole
• RoHS3 Compliance and REACH Unaffected status

The identified substitute parts meet these core electrical specifications. Variations in package dimensions (disc size), energy rating, capacitance, and operating temperature maximum do not preclude substitution when the primary voltage and current parameters align.

Parameter Comparison

Engineering Selection Recommendations

Both ERZ-V07D151 (Panasonic) and VDRS07H095BSE (Vishay) are active product alternatives to the obsolete ROV07-151K. Selection between these substitutes should be based on the following factors:

ERZ-V07D151 (Panasonic ZNR® Series): This part offers higher surge current capability (1.75 kA versus 1.2 kA) and greater energy dissipation (13 J versus 11 J). The increased ratings provide additional margin in transient suppression applications. The operating temperature maximum is limited to 85°C compared to the original 125°C specification. The 8.5mm disc package is larger than the original 7mm package, requiring PCB layout verification.

VDRS07H095BSE (Vishay VDRS Series): This part maintains identical surge current (1.2 kA) and voltage specifications to the original ROV07-151K. Energy dissipation is increased to 13 J. The operating temperature maximum is 85°C. The 9mm disc package is the largest of the three options and requires PCB layout verification.

Both substitutes meet RoHS3 compliance and REACH requirements. Selection depends on available PCB space, thermal operating requirements, and surge energy margin needs for the specific application.

Frequently Asked Questions (FAQ)

Q: Can ERZ-V07D151 be used as a direct replacement for ROV07-151K?

A: ERZ-V07D151 meets all critical electrical parameters: 150 V nominal varistor voltage, 95 V AC / 125 V DC maximum ratings, and 1.75 kA surge current (exceeding the 1.2 kA requirement). The primary consideration is the 8.5mm disc package size versus the original 7mm package, which requires PCB layout verification. The reduced operating temperature maximum (85°C versus 125°C) must be evaluated against application requirements.

Q: Can VDRS07H095BSE be used as a direct replacement for ROV07-151K?

A: VDRS07H095BSE meets all critical electrical parameters identically to the original part: 150 V nominal varistor voltage, 95 V AC / 125 V DC maximum ratings, and 1.2 kA surge current. The primary consideration is the 9mm disc package size versus the original 7mm package, which requires PCB layout verification. The reduced operating temperature maximum (85°C versus 125°C) must be evaluated against application requirements.

Q: What are the key differences between the two substitute parts?

A: ERZ-V07D151 provides higher surge current capability (1.75 kA) and energy dissipation (13 J), offering greater transient suppression margin. VDRS07H095BSE maintains the original surge current specification (1.2 kA) with increased energy dissipation (13 J). Both have identical voltage ratings and operating temperature ranges. Package sizes differ: ERZ-V07D151 uses 8.5mm disc, VDRS07H095BSE uses 9mm disc.

Q: Are package size differences critical for substitution?

A: Package size differences must be evaluated against available PCB space and circuit board layout constraints. The original 7mm disc is smaller than both substitute options (8.5mm and 9mm). Physical clearance verification is required before implementation.

Q: Do the substitute parts meet compliance requirements?

A: Both ERZ-V07D151 and VDRS07H095BSE are RoHS3 compliant and REACH unaffected, matching the compliance status of the original ROV07-151K.

Q: What is the significance of the operating temperature range difference?

A: The original ROV07-151K operates to 125°C maximum, while both substitutes are rated to 85°C maximum. Applications requiring operation above 85°C ambient or component temperature must evaluate whether this reduced rating is acceptable for the specific thermal environment.