ROV07-680K Equivalent & Substitute Parts

Part Overview

The ROV07-680K is a 68V 250A varistor manufactured by Littelfuse Inc., designed for transient voltage suppression applications. This through-hole disc component (7mm) operates across a temperature range of -40°C to 125°C and is classified as obsolete. Due to its obsolete status, identifying functionally equivalent active alternatives is essential for ongoing system support and new design implementations.

Key Parameters

Parameter	Value
Varistor Voltage (Typical)	68 V
Current - Surge	250 A
Maximum DC Volts	56 V
Maximum AC Volts	40 V
Energy	4.3 J
Mounting Type	Through Hole
Package / Case	Disc 7mm
Operating Temperature	-40°C ~ 125°C
Number of Circuits	1

Substitute Part Grouping Explanation

Substitution of the ROV07-680K is determined by the following critical parameters:

Varistor Voltage Range: Minimum 61.2 V to Maximum 74.8 V (nominal 68 V)
Surge Current Rating: 250 A minimum
Maximum DC Voltage: 56 V
Maximum AC Voltage: 40 V
Mounting Configuration: Through Hole, Disc 7mm package
Number of Circuits: Single circuit (1)

The V68ZA2P meets all these electrical and mechanical specifications, making it a direct functional equivalent despite differences in energy rating and operating temperature range.

Parameter Comparison

Parameter	ROV07-680K	V68ZA2P
Manufacturer	Littelfuse Inc.	Littelfuse Inc.
Category	Transient Voltage Suppressors (TVS)	Transient Voltage Suppressors (TVS)
Varistor Voltage (Min)	61.2 V	61.2 V
Varistor Voltage (Typ)	68 V	68 V
Varistor Voltage (Max)	74.8 V	74.8 V
Current - Surge	250 A	250 A
Maximum DC Volts	56 V	56 V
Maximum AC Volts	40 V	40 V
Number of Circuits	1	1
Mounting Type	Through Hole	Through Hole
Package / Case	Disc 7mm	Disc 7mm
Product Status	Obsolete	Active
RoHS Status	ROHS3 Compliant	ROHS3 Compliant
REACH Status	REACH Unaffected	REACH Unaffected
Energy	4.3 J	3 J
Operating Temperature	-40°C ~ 125°C	-55°C ~ 85°C

Engineering Selection Recommendations

The V68ZA2P is the manufacturer-recommended substitute for the obsolete ROV07-680K. Both components are manufactured by Littelfuse Inc. and maintain identical electrical specifications for varistor voltage, surge current, and voltage ratings. Both achieve ROHS3 compliance and REACH unaffected status.

The V68ZA2P carries active product status, ensuring ongoing availability and support. The primary differences are energy rating (3 J versus 4.3 J) and operating temperature range (-55°C ~ 85°C versus -40°C ~ 125°C). Applications operating within the V68ZA2P temperature specification can proceed with direct substitution without circuit redesign.

Frequently Asked Questions (FAQ)

Q: Can the V68ZA2P directly replace the ROV07-680K in existing designs?

A: Yes, for applications operating within -55°C to 85°C. The electrical specifications for varistor voltage, surge current, and voltage ratings are identical. The through-hole disc 7mm package ensures mechanical compatibility.

Q: What is the significance of the energy rating difference (4.3 J vs. 3 J)?

A: Energy rating indicates transient energy absorption capability. The ROV07-680K has a higher energy rating. Applications requiring the full 4.3 J specification should be evaluated against the V68ZA2P's 3 J capability.

Q: Are there temperature range limitations with the V68ZA2P?

A: The V68ZA2P operates from -55°C to 85°C, compared to the ROV07-680K's -40°C to 125°C range. Applications requiring operation above 85°C or below -55°C require alternative component selection.

Q: Do both parts meet current regulatory requirements?

A: Yes. Both the ROV07-680K and V68ZA2P are ROHS3 compliant and REACH unaffected, meeting current regulatory standards.

Q: What is the packaging difference between these parts?

A: The ROV07-680K is supplied in standard packaging, while the V68ZA2P is supplied in bulk packaging. Both maintain identical through-hole disc 7mm mechanical specifications.

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