Littelfuse 90065-019 Equivalent & Substitute Parts

Part Overview

The Littelfuse 90065-019 is a 820 V, 28.8 kA varistor designed for transient voltage suppression in chassis mount applications with blade terminals. This component is classified as obsolete, making identification of suitable substitute parts essential for ongoing system maintenance and new design implementations. The varistor provides single-circuit protection with 550 J energy rating and operates across a varistor voltage range of 735 V to 911 V.

Substiute Parts

90065-019

Littelfuse Inc.In Stock: 98190065-019 Datasheet

Current PartRFQ

V511DB40

Littelfuse Inc.In Stock: 1017V511DB40 Datasheet

MFR RecommendedRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution of the 90065-019 is determined by the following critical parameters:

• Varistor Voltage (Typ): 820 V nominal voltage must be maintained within the specified tolerance range (735 V to 911 V minimum, 738 V to 902 V maximum for substitutes)
• Mounting Type: Chassis mount configuration required
• Number of Circuits: Single-circuit protection
• Package / Case: Blade terminal configuration for mechanical and electrical compatibility
• Current - Surge Rating: Minimum 28.8 kA capacity; higher ratings provide enhanced transient protection margin
• Energy Rating: Minimum 550 J; higher ratings indicate improved thermal dissipation capability

The V511DB40 qualifies as a direct substitute based on matching varistor voltage, mounting type, circuit count, and blade terminal package. The substitute demonstrates improved surge current capacity (40 kA versus 28.8 kA) and higher energy rating (700 J versus 550 J), providing enhanced protection performance.

Parameter Comparison

Engineering Selection Recommendations

The V511DB40 is the manufacturer-recommended substitute for the obsolete 90065-019. Selection of this substitute is supported by the following factors:

• Product Status: The V511DB40 maintains active product status, ensuring continued availability and manufacturing support, whereas the 90065-019 is obsolete
• Electrical Compatibility: Varistor voltage specifications overlap within acceptable tolerance ranges (820 V nominal for both parts), with matching maximum AC voltage rating of 510 V
• Performance Enhancement: The substitute provides increased surge current capacity (40 kA versus 28.8 kA) and higher energy dissipation (700 J versus 550 J), delivering improved transient protection
• Compliance Status: The V511DB40 achieves ROHS3 compliance and REACH unaffected status, meeting modern regulatory requirements, whereas the 90065-019 is RoHS non-compliant
• Mechanical Compatibility: Both parts utilize blade terminal configuration and chassis mount design, supporting direct mechanical substitution in existing applications

Frequently Asked Questions (FAQ)

Q: Can the V511DB40 directly replace the 90065-019 in existing designs?

A: Yes. Both parts share identical varistor voltage (820 V nominal), maximum AC voltage (510 V), single-circuit configuration, and blade terminal chassis mount package. The substitute provides enhanced surge current and energy ratings without requiring circuit redesign.

Q: What is the significance of the higher surge current rating in the V511DB40?

A: The V511DB40 surge current rating of 40 kA exceeds the 90065-019 specification of 28.8 kA. This increased capacity provides additional margin for transient overvoltage events and improves component reliability under peak stress conditions.

Q: Does the energy rating difference affect substitution suitability?

A: The V511DB40 energy rating of 700 J exceeds the 90065-019 rating of 550 J. Higher energy rating indicates improved thermal dissipation capability during transient events, supporting reliable operation across the specified temperature range.

Q: Are there compliance differences between these parts?

A: Yes. The V511DB40 is ROHS3 compliant and REACH unaffected, meeting current environmental regulations. The 90065-019 is RoHS non-compliant. For applications subject to regulatory compliance requirements, the V511DB40 is the appropriate selection.

Q: What is the difference between "Blade Terminals" and "Blade Type, Encased" packaging?

A: Both designations indicate blade terminal configuration suitable for chassis mount applications. The V511DB40 encased design provides additional mechanical protection while maintaining electrical compatibility with the original blade terminal interface.

Q: Is the varistor voltage tolerance range acceptable for substitution?

A: Yes. The V511DB40 varistor voltage range (738 V to 902 V) overlaps substantially with the 90065-019 range (735 V to 911 V), with nominal voltage of 820 V for both parts. This overlap ensures electrical compatibility in circuit protection applications.