V480PA80C Equivalent & Substitute Parts

Part Overview

The V480PA80C is a 750 V varistor manufactured by Littelfuse Inc., designed for transient voltage suppression in chassis mount applications. This component features a base mount configuration with a surge current rating of 6.5 kA and an energy dissipation capacity of 180 J. The product is classified as obsolete, making identification of suitable substitute components essential for ongoing system maintenance and new design implementations where equivalent performance is required.

Substiute Parts

V480PA80C

Littelfuse Inc.In Stock: 760V480PA80C Datasheet

Current PartRFQ

V481DB40

LittelfuseIn Stock: 1008V481DB40 Datasheet

MFR RecommendedRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution of the V480PA80C is determined by the following critical electrical and mechanical parameters:

Electrical Compatibility Criteria:

• Maximum AC Volts: 480 V
• Maximum DC Volts: 640 V
• Varistor Voltage (Typical): 750 V
• Number of Circuits: 1
• Operating Temperature Range: -55°C to 85°C

Mechanical Compatibility Criteria:

• Mounting Type: Chassis Mount
• Category: Transient Voltage Suppressors (TVS)

The V481DB40 qualifies as a substitute based on matching all critical electrical parameters (480 V AC, 640 V DC, 750 V typical varistor voltage, single circuit, identical temperature range) and maintaining the same mounting classification (chassis mount). While the V481DB40 features enhanced surge current capacity (40 kA versus 6.5 kA) and greater energy dissipation (650 J versus 180 J), these represent performance improvements rather than incompatibilities. The package configuration differs (blade type, encased versus base mount), requiring mechanical integration verification in the target application.

Parameter Comparison

Engineering Selection Recommendations

The V481DB40 is the manufacturer-recommended substitute for the obsolete V480PA80C. Selection of this substitute is supported by the following factors:

Product Status: The V481DB40 maintains active product status with current manufacturing support, ensuring long-term availability and supply chain continuity compared to the obsolete V480PA80C.

Regulatory Compliance: The V481DB40 is ROHS3 compliant, whereas the V480PA80C is RoHS non-compliant. This compliance improvement aligns with current regulatory requirements for electronic components in most markets.

Electrical Performance: Both components share identical maximum voltage ratings (480 V AC, 640 V DC) and nominal varistor voltage (750 V), ensuring direct electrical compatibility in the circuit protection function. The V481DB40 provides enhanced surge current capacity and energy dissipation, which represents a performance upgrade suitable for applications requiring higher transient protection margins.

Mechanical Integration: The transition from base mount to blade type, encased configuration requires verification of mechanical fit and mounting interface compatibility within the target chassis assembly. This represents the primary consideration for physical integration.

Frequently Asked Questions (FAQ)

Q: Can the V481DB40 directly replace the V480PA80C without circuit modifications?

A: Electrical compatibility is confirmed. Both components operate at identical maximum voltage ratings (480 V AC, 640 V DC) and nominal varistor voltage (750 V), requiring no circuit design changes. Mechanical integration must be verified due to the package configuration change from base mount to blade type, encased.

Q: What is the significance of the higher surge current rating in the V481DB40?

A: The V481DB40 provides 40 kA surge current capacity compared to 6.5 kA in the V480PA80C. This represents enhanced transient protection capability and does not create incompatibility. Applications with higher transient energy requirements benefit from this performance improvement.

Q: Does the energy dissipation difference affect substitution suitability?

A: The V481DB40 dissipates 650 J compared to 180 J in the V480PA80C. This increased capacity provides superior thermal management during transient events and does not create incompatibility. The upgrade supports applications with higher energy transient profiles.

Q: Are there compliance considerations for the substitute part?

A: The V481DB40 is ROHS3 compliant, whereas the V480PA80C is RoHS non-compliant. For applications subject to RoHS regulations, the V481DB40 meets current compliance requirements. Verify regulatory requirements for your specific application and market.

Q: What mechanical factors require evaluation during substitution?

A: The primary mechanical difference is the package configuration: V480PA80C uses base mount, while V481DB40 uses blade type, encased design. Verify that the blade type connector interface is compatible with your chassis mounting structure and electrical connection points before implementation.

Q: Are both components rated for the same operating temperature range?

A: Yes, both the V480PA80C and V481DB40 operate across the identical temperature range of -55°C to 85°C, ensuring thermal compatibility in the target application environment.