ROV05-220L-S Equivalent & Substitute Parts

Part Overview

The ROV05-220L-S is a 22 V, 100 A varistor manufactured by Littelfuse Inc., designed for transient voltage suppression in through-hole applications. This component features a 5mm disc package and is rated for surge currents up to 100 A with 0.7 J energy absorption capability. The part is currently obsolete, making equivalent substitutes necessary for ongoing design support and component procurement.

Key Parameters

Parameter	Value
Varistor Voltage (Typ)	22 V
Current - Surge	100 A
Maximum DC Volts	18 V
Maximum AC Volts	14 V
Energy	0.7 J
Operating Temperature Range	-40°C ~ 85°C
Mounting Type	Through Hole
Package / Case	Disc 5mm
Number of Circuits	1

Substitute Part Grouping Explanation

Substitution eligibility for the ROV05-220L-S is determined by the following critical parameters:

Varistor Voltage (Typ): 22 V nominal rating
Current - Surge: Minimum 100 A capability
Maximum DC Volts: 18 V maximum
Maximum AC Volts: 14 V maximum
Operating Temperature Range: -40°C to 85°C minimum
Mounting Type: Through Hole
Number of Circuits: 1 circuit configuration

The substitute parts listed below meet these core electrical and mechanical requirements. Variations in package size (5mm vs. 7mm disc), energy rating, and capacitance are secondary considerations that do not prevent functional substitution when the primary parameters align.

Parameter Comparison

Parameter	ROV05-220L-S	V22ZA05P	ERZ-V05D220	VDRS05A014BSE	VDRS05A014TSE
Manufacturer	Littelfuse Inc.	Littelfuse Inc.	Panasonic Electronic Components	Vishay Beyschlag/Draloric/BC Components	Vishay Beyschlag/Draloric/BC Components
Varistor Voltage (Typ)	22 V	22 V	22 V	22 V	22 V
Varistor Voltage (Min)	18.7 V	19.8 V	20 V	19.8 V	19.8 V
Varistor Voltage (Max)	25.3 V	24.2 V	24 V	24.2 V	24.2 V
Current - Surge	100 A	100 A	250 A	100 A	100 A
Maximum DC Volts	18 V	18 V	18 V	18 V	18 V
Maximum AC Volts	14 V	14 V	14 V	14 V	14 V
Energy	0.7 J	0.2 J	0.7 J	0.5 J	0.5 J
Operating Temperature Range	-40°C ~ 85°C	-55°C ~ 85°C	-40°C ~ 85°C	-40°C ~ 85°C	-40°C ~ 85°C
Package / Case	Disc 5mm	Disc 5mm	Disc 7mm	Disc 7mm	Disc 7mm
Mounting Type	Through Hole	Through Hole	Through Hole	Through Hole	Through Hole
Number of Circuits	1	1	1	1	1
Product Status	Obsolete	Active	Active	Active	Active
RoHS Status	ROHS3 Compliant	ROHS3 Compliant	ROHS3 Compliant	ROHS3 Compliant	ROHS3 Compliant

Engineering Selection Recommendations

All four substitute parts are active products with ROHS3 compliance and REACH unaffected status, providing long-term availability and regulatory alignment.

V22ZA05P is the direct Littelfuse equivalent within the ZA series, maintaining the 5mm disc package footprint of the original ROV05-220L-S. This part offers extended operating temperature range (-55°C to 85°C) and is available in bulk packaging. The reduced energy rating (0.2 J versus 0.7 J) should be evaluated against application surge requirements.

ERZ-V05D220 is the Panasonic ZNR® series alternative, offering increased surge current capability (250 A) and matching the original 0.7 J energy rating. The 7mm disc package requires PCB layout modification but provides enhanced transient suppression capacity.

VDRS05A014BSE and VDRS05A014TSE are Vishay VDRS series options with identical electrical specifications (100 A surge, 22 V nominal). Both use 7mm disc packages and provide 0.5 J energy absorption. These parts differ only in packaging designation (BSE bulk versus TSE standard).

Selection should prioritize PCB layout constraints (5mm versus 7mm package availability) and application energy absorption requirements.

Frequently Asked Questions (FAQ)

Q: Can V22ZA05P directly replace ROV05-220L-S without PCB modification?

A: Yes. V22ZA05P maintains the same 5mm disc package and through-hole mounting configuration as the ROV05-220L-S, requiring no PCB layout changes.

Q: What is the impact of the reduced energy rating in V22ZA05P (0.2 J versus 0.7 J)?

A: Energy rating indicates transient suppression capacity per pulse. Applications with high-energy surge events may require evaluation of V22ZA05P performance. ERZ-V05D220 maintains the original 0.7 J rating if energy absorption is a critical design parameter.

Q: Why do ERZ-V05D220, VDRS05A014BSE, and VDRS05A014TSE use 7mm packages?

A: These alternatives employ larger disc packages to accommodate their electrical specifications. PCB footprint modification is required for these substitutes.

Q: Are all substitutes RoHS3 compliant?

A: Yes. All four substitute parts meet ROHS3 compliance requirements and are REACH unaffected, ensuring regulatory alignment with current environmental standards.

Q: What is the difference between VDRS05A014BSE and VDRS05A014TSE?

A: Both parts are electrically identical with matching 22 V nominal rating, 100 A surge current, and 0.5 J energy. The designation difference reflects packaging format (BSE bulk versus TSE standard), with no impact on electrical performance.

Q: Can ERZ-V05D220 be used in applications requiring exactly 100 A surge current?

A: Yes. ERZ-V05D220 is rated for 250 A surge current, which exceeds the 100 A requirement. The higher rating provides additional margin without compromising circuit protection.

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