ROV07-511K Equivalent & Substitute Parts

Part Overview

The ROV07-511K is a 510V 1.2kA varistor manufactured by Littelfuse Inc., designed for transient voltage suppression in through-hole disc 7mm packaging. This component is classified as obsolete, making equivalent substitutes necessary for ongoing design support and procurement. The part operates across a temperature range of -40°C to 125°C and is ROHS3 compliant.

Key Parameters

Parameter	Value
Varistor Voltage (Typical)	510 V
Current - Surge	1.2 kA
Maximum DC Volts	418 V
Maximum AC Volts	320 V
Energy	37 J
Number of Circuits	1
Operating Temperature	-40°C ~ 125°C
Mounting Type	Through Hole
Package / Case	Disc 7mm

Substitute Part Grouping Explanation

Substitution for the ROV07-511K is determined by the following critical parameters:

Varistor Voltage (Typ): 510 V nominal rating
Maximum DC Volts: 410 V or higher
Maximum AC Volts: 320 V or higher
Number of Circuits: 1 circuit configuration
Mounting Type: Through Hole
Current - Surge: 1.2 kA minimum capability

The ERZ-V07D511 qualifies as a direct substitute based on matching varistor voltage, circuit count, mounting type, and voltage ratings. While the substitute exhibits higher surge current capacity (1.75 kA) and energy rating (45 J), these represent enhanced performance characteristics that do not compromise compatibility in applications designed for the original part.

Parameter Comparison

Parameter	ROV07-511K (Littelfuse)	ERZ-V07D511 (Panasonic)
Manufacturer	Littelfuse Inc.	Panasonic Electronic Components
Product Status	Obsolete	Active
Varistor Voltage (Min)	459 V	459 V
Varistor Voltage (Typ)	510 V	510 V
Varistor Voltage (Max)	561 V	561 V
Maximum DC Volts	418 V	410 V
Maximum AC Volts	320 V	320 V
Current - Surge	1.2 kA	1.75 kA
Energy	37 J	45 J
Number of Circuits	1	1
Operating Temperature	-40°C ~ 125°C	-40°C ~ 85°C
Mounting Type	Through Hole	Through Hole
RoHS Status	ROHS3 Compliant	ROHS3 Compliant
REACH Status	REACH Unaffected	REACH Unaffected

Engineering Selection Recommendations

The ERZ-V07D511 is an active product with current manufacturing support, addressing the obsolescence status of the ROV07-511K. Both parts maintain ROHS3 compliance and REACH unaffected status, ensuring regulatory alignment. The substitute demonstrates equivalent voltage ratings across minimum, typical, and maximum specifications, with enhanced surge current and energy handling capabilities. The operating temperature range of the substitute (-40°C to 85°C) is narrower than the original part; applications requiring operation above 85°C require evaluation against specific thermal requirements.

Frequently Asked Questions (FAQ)

Q: Can ERZ-V07D511 directly replace ROV07-511K in existing designs?

A: Yes, the ERZ-V07D511 meets the critical substitution criteria: identical varistor voltage rating (510 V typical), matching voltage tolerances, equivalent circuit count, and through-hole mounting compatibility. The higher surge current and energy ratings represent performance enhancements.

Q: What is the difference in package dimensions between these parts?

A: The ROV07-511K uses a 7mm disc package, while the ERZ-V07D511 uses an 8.5mm disc package. Physical layout verification is required for space-constrained applications.

Q: Are there temperature operating range considerations?

A: The ROV07-511K operates to 125°C, while the ERZ-V07D511 operates to 85°C. Applications requiring sustained operation above 85°C must confirm thermal compatibility with the substitute.

Q: Do both parts meet the same regulatory standards?

A: Yes, both parts are ROHS3 compliant and REACH unaffected, maintaining equivalent regulatory status.

Q: What is the inventory status for the substitute part?

A: The ERZ-V07D511 has 27,951 pieces in stock as new original inventory, providing reliable procurement availability compared to the obsolete ROV07-511K.

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