Littelfuse 90065-014 Equivalent & Substitute Parts

Part Overview

The Littelfuse 90065-014 is a 390 V, 22.5 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 270 J energy absorption capability and operates across a maximum AC voltage of 250 V.

Substiute Parts

90065-014

Littelfuse Inc.In Stock: 73690065-014 Datasheet

Current PartRFQ

V251DB40

Littelfuse Inc.In Stock: 1000V251DB40 Datasheet

MFR RecommendedRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution of the Littelfuse 90065-014 is determined by the following critical parameters:

• Varistor Voltage (Typical): Must remain 390 V to maintain circuit protection thresholds
• Varistor Voltage Range: Must encompass or align with 351 V – 429 V specification
• Number of Circuits: Must be 1 circuit configuration
• Mounting Type: Must be Chassis Mount to ensure mechanical compatibility
• Package / Case: Must support Blade Terminal configuration for electrical connection
• Maximum AC Volts: Must meet or exceed 250 V rating
• Series Compatibility: DB series components maintain design consistency

The Littelfuse V251DB40 satisfies all substitution criteria while offering enhanced surge current capacity (40 kA versus 22.5 kA) and improved energy absorption (370 J versus 270 J), along with active product status and RoHS3 compliance.

Parameter Comparison

Engineering Selection Recommendations

The Littelfuse V251DB40 is the manufacturer-recommended substitute for the obsolete 90065-014. Selection of this substitute is supported by the following engineering factors:

Product Status: The V251DB40 maintains active product status, ensuring long-term availability and supply chain continuity compared to the obsolete 90065-014.

Compliance & Certifications: The V251DB40 achieves ROHS3 compliance and REACH unaffected status, meeting modern regulatory requirements. The 90065-014 is RoHS non-compliant, presenting compliance risks in new designs and system upgrades.

Electrical Performance: Both components maintain identical varistor voltage specifications (390 V typical, 351–429 V range) and maximum AC voltage rating (250 V). The V251DB40 provides enhanced surge current capacity (40 kA versus 22.5 kA) and greater energy absorption (370 J versus 270 J), offering improved transient protection margins.

Mechanical Compatibility: Both components are chassis mount with blade terminal configuration, ensuring direct mechanical and electrical compatibility in existing mounting structures.

Operating Temperature: The V251DB40 specifies operating temperature range (-55°C ~ 85°C), providing defined thermal performance parameters absent from the 90065-014 specification.

Frequently Asked Questions (FAQ)

Q: Can the V251DB40 directly replace the 90065-014 in existing applications?

A: Yes. Both components share identical varistor voltage specifications (390 V typical), maximum AC voltage rating (250 V), single-circuit configuration, chassis mount design, and blade terminal package. Mechanical and electrical compatibility is maintained.

Q: What are the key differences between these components?

A: The V251DB40 offers higher surge current capacity (40 kA versus 22.5 kA) and greater energy absorption (370 J versus 270 J). The V251DB40 is active product status with ROHS3 compliance, while the 90065-014 is obsolete and RoHS non-compliant. The V251DB40 includes specified operating temperature range (-55°C ~ 85°C).

Q: Why is the 90065-014 classified as obsolete?

A: Littelfuse has discontinued this component in favor of the V251DB40 and other active DB series variants. Obsolete status indicates the manufacturer no longer produces or supports this part number.

Q: Does the higher surge current rating of the V251DB40 affect circuit compatibility?

A: No. Higher surge current capacity represents improved performance margin. The component will operate identically within the circuit's normal operating parameters. The varistor voltage threshold and response characteristics remain unchanged.

Q: Are there packaging differences between these components?

A: Both use blade terminal configuration for chassis mount applications. The V251DB40 is specified as "Blade Type, Encased" while the 90065-014 is "Chassis Mount, Blade Terminals." Both configurations support identical mounting and connection methods.

Q: What compliance advantages does the V251DB40 provide?

A: The V251DB40 is ROHS3 compliant and REACH unaffected, meeting current environmental and regulatory standards. The 90065-014 is RoHS non-compliant, which may restrict use in regulated industries and new system designs.