ROV20H560L-S Equivalent & Substitute Parts

Part Overview

The ROV20H560L-S is a 56 V, 3 kA Transient Voltage Suppressor (TVS) varistor manufactured by Littelfuse, designed for through-hole mounting in a 20mm disc package. This component is classified as obsolete, making identification of functionally equivalent alternatives essential for ongoing system support and new design implementations. The varistor provides transient voltage suppression across a single circuit with rated energy dissipation of 41 J and operates across the temperature range of -40°C to 125°C.

Substiute Parts

ROV20H560L-S

LittelfuseIn Stock: 1190ROV20H560L-S Datasheet

Current PartRFQ

ERZ-V20D560

Panasonic Electronic ComponentsIn Stock: 1079ERZ-V20D560 Datasheet

MFR RecommendedRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution of the ROV20H560L-S is determined by strict equivalence across the following electrical and mechanical parameters:

• Varistor voltage rating (typical value 56 V, with acceptable range 47.6 V to 64.4 V minimum and maximum)
• Surge current capacity (3 kA)
• Maximum AC and DC voltage ratings (35 V AC, 45 V DC)
• Energy dissipation capability (41 J)
• Through-hole mounting configuration
• Single-circuit design
• Operating temperature range compatibility

The ERZ-V20D560 manufactured by Panasonic Electronic Components meets these substitution criteria. This part maintains electrical equivalence across all critical parameters while offering active product status and full RoHS3 compliance.

Parameter Comparison

Engineering Selection Recommendations

The ERZ-V20D560 is the qualified substitute for the ROV20H560L-S based on the following engineering criteria:

• All critical electrical parameters (varistor voltage, surge current, maximum AC/DC ratings, and energy dissipation) are equivalent or within acceptable tolerance ranges
• Both components maintain ROHS3 compliance and REACH unaffected status, ensuring regulatory alignment
• The substitute part carries active product status, providing long-term availability and supply chain stability compared to the obsolete original part
• Physical package dimensions differ slightly (21.5mm versus 20mm disc), which requires mechanical clearance verification in the target application
• The operating temperature range of the substitute (-40°C to 85°C) is narrower than the original (-40°C to 125°C); applications requiring operation above 85°C must retain the original part or identify alternative solutions

Frequently Asked Questions (FAQ)

Q: Can the ERZ-V20D560 be used as a direct replacement for the ROV20H560L-S?

A: Yes, the ERZ-V20D560 is electrically equivalent across all critical parameters. However, the package diameter increases from 20mm to 21.5mm, requiring verification that the mounting footprint accommodates this dimensional change.

Q: What is the significance of the varistor voltage range difference?

A: The ROV20H560L-S has a minimum varistor voltage of 47.6 V, while the ERZ-V20D560 has a minimum of 50 V. Both parts maintain the same typical rating of 56 V. This difference is within acceptable substitution tolerance for transient voltage suppression applications, as the maximum ratings (64.4 V and 62 V respectively) overlap sufficiently to ensure functional compatibility.

Q: Does the capacitance difference affect substitution suitability?

A: The capacitance values are 11600 pF and 12200 pF respectively, measured at 1 kHz. This 5% difference is negligible for transient voltage suppression applications and does not impact substitution suitability.

Q: Are there temperature range limitations with the substitute part?

A: The ERZ-V20D560 operates from -40°C to 85°C, compared to the original part's -40°C to 125°C range. Applications requiring sustained operation above 85°C cannot use this substitute and must identify alternative solutions or retain the original part if available.

Q: What compliance certifications apply to both parts?

A: Both the ROV20H560L-S and ERZ-V20D560 are ROHS3 compliant and REACH unaffected, ensuring regulatory compliance for applications subject to these standards.