VE17P00551K-- Equivalent & Substitute Parts

Part Overview

The VE17P00551K-- is a 860 V, 5 kA disc varistor manufactured by KYOCERA AVX, designed for transient voltage suppression in through-hole applications. This component features a 17mm disc package and is rated for 240J energy dissipation across an operating temperature range of -40°C to 125°C. The part is currently classified as obsolete, making identification of suitable substitute components essential for ongoing system support and new design implementations.

Substiute Parts

VE17P00551K--

KYOCERA AVXIn Stock: 1109VE17P00551K-- Datasheet

Current PartRFQ

ERZ-V20D911

Panasonic Electronic ComponentsIn Stock: 3935ERZ-V20D911 Datasheet

MFR RecommendedRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution of the VE17P00551K-- is determined by the following critical parameters:

• Varistor Voltage Range: The substitute must operate within the specified voltage window (Typ: 860 V, Min: 774 V, Max: 946 V) to maintain circuit protection characteristics
• Surge Current Rating: The substitute must support the required transient current capacity (5 kA minimum)
• Maximum DC and AC Voltage Ratings: The substitute must meet or exceed the specified maximum voltage limits (DC: 715 V, AC: 550 V)
• Energy Dissipation Capability: The substitute must handle the required energy absorption (240 J minimum)
• Mounting Configuration: Through-hole disc package format is required for mechanical compatibility
• Operating Temperature Range: The substitute must function across the specified temperature window

The ERZ-V20D911 from Panasonic Electronic Components satisfies these substitution criteria with enhanced performance characteristics in surge current capacity and energy dissipation.

Parameter Comparison

Engineering Selection Recommendations

The ERZ-V20D911 serves as a direct functional substitute for the obsolete VE17P00551K--. The substitute component provides enhanced electrical performance with higher surge current capacity (7.5 kA vs. 5 kA) and greater energy dissipation capability (510 J vs. 240 J), offering improved transient protection margins. The substitute maintains compatibility with the maximum AC voltage specification (550 V) and exceeds the maximum DC voltage requirement (745 V vs. 715 V).

The ERZ-V20D911 holds active product status and achieves ROHS3 compliance, supporting modern manufacturing and environmental standards. The substitute operates across a reduced temperature range (-40°C to 85°C) compared to the original part (-40°C to 125°C); applications requiring operation above 85°C require thermal analysis to confirm suitability.

The package size increases from 17mm to 22.50mm diameter. PCB layout and mechanical clearance verification is necessary to confirm physical compatibility in existing designs.

Frequently Asked Questions (FAQ)

Q: Can the ERZ-V20D911 be used as a direct replacement for the VE17P00551K--?

A: The ERZ-V20D911 is functionally compatible as a substitute. The electrical parameters (varistor voltage, surge current, maximum voltage ratings) fall within acceptable ranges for the original application. Physical package size differs (22.50mm vs. 17mm disc), requiring verification of PCB layout compatibility.

Q: What are the key differences between these two varistors?

A: The ERZ-V20D911 provides higher surge current capacity (7.5 kA vs. 5 kA) and greater energy dissipation (510 J vs. 240 J). The substitute operates at a slightly higher typical varistor voltage (910 V vs. 860 V) and has a reduced maximum operating temperature (85°C vs. 125°C). The package diameter is larger (22.50mm vs. 17mm).

Q: Does the larger package size affect circuit performance?

A: Package size affects mechanical fit and PCB layout only. Electrical performance is determined by the varistor voltage, surge current rating, and energy dissipation characteristics. Verify that the 22.50mm disc diameter accommodates existing PCB footprint and clearance requirements.

Q: Is the ERZ-V20D911 suitable for high-temperature applications above 85°C?

A: The ERZ-V20D911 is rated for operation up to 85°C. Applications requiring sustained operation above this temperature require thermal analysis and may necessitate alternative component selection.

Q: What is the compliance status difference between these parts?

A: The VE17P00551K-- is RoHS non-compliant and obsolete. The ERZ-V20D911 is ROHS3 compliant and maintains active product status, supporting current manufacturing standards and long-term availability.