V510PA80C Equivalent & Substitute Parts

Part Overview

The V510PA80C is a 820 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 energy dissipation capacity of 190 J. The product is classified as obsolete, making identification of suitable substitute components essential for ongoing system support and new design implementations.

Substiute Parts

V510PA80C

Littelfuse Inc.In Stock: 1081V510PA80C Datasheet

Current PartRFQ

V511DB40

Littelfuse Inc.In Stock: 1017V511DB40 Datasheet

MFR RecommendedRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution of the V510PA80C is determined by the following critical electrical and mechanical parameters:

Electrical Compatibility Criteria:

• Maximum AC Volts: 510 V (fixed requirement)
• Maximum DC Volts: 675 V (fixed requirement)
• Varistor Voltage (Typical): 820 V (fixed requirement)
• Number of Circuits: 1 (fixed requirement)
• Operating Temperature Range: -55°C to 85°C (fixed requirement)

Mechanical Compatibility Criteria:

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

Performance Parameters (Allowable Variation):

• Current - Surge: May increase from 6.5 kA (higher surge capacity is acceptable)
• Energy Dissipation: May increase from 190 J (higher energy handling is acceptable)
• Capacitance: May vary (application-dependent)
• Package / Case: May differ if mechanical fit permits (base mount to blade type transition acceptable)

The V511DB40 qualifies as a substitute because it maintains all fixed electrical parameters while providing enhanced surge current capacity (40 kA vs. 6.5 kA) and increased energy dissipation (700 J vs. 190 J). The transition from base mount to blade type encased configuration represents a mechanical upgrade suitable for applications requiring improved thermal management and mechanical robustness.

Parameter Comparison

Engineering Selection Recommendations

The V511DB40 is the designated substitute for the obsolete V510PA80C based on the following engineering factors:

Product Status Alignment: The V511DB40 maintains active product status with current manufacturing support, ensuring long-term availability and supply chain continuity compared to the obsolete V510PA80C.

Regulatory Compliance: The V511DB40 achieves ROHS3 compliance and REACH unaffected status, providing superior environmental and regulatory positioning for new designs and system upgrades. The V510PA80C's RoHS non-compliant status limits its applicability in regulated markets.

Electrical Parameter Equivalence: Both components maintain identical maximum AC/DC voltage ratings (510 V / 675 V) and nominal varistor voltage (820 V), ensuring direct functional compatibility in voltage suppression circuits.

Enhanced Performance Characteristics: The V511DB40 provides 6.2× higher surge current capacity (40 kA vs. 6.5 kA) and 3.7× greater energy dissipation (700 J vs. 190 J), delivering improved transient protection margins without compromising the core voltage regulation function.

Mechanical Transition: The shift from base mount to blade type encased configuration represents a mechanical enhancement that improves thermal dissipation and mechanical stability in chassis mount installations.

Frequently Asked Questions (FAQ)

Q: Can the V511DB40 directly replace the V510PA80C in existing designs?

A: Yes, provided the mechanical mounting interface can accommodate the blade type encased configuration. The electrical parameters are equivalent, and the enhanced surge current and energy ratings provide superior protection margins.

Q: What is the primary reason for substitution?

A: The V510PA80C is obsolete. The V511DB40 is an active product from the same manufacturer with identical electrical specifications and improved regulatory compliance.

Q: Are there differences in varistor voltage between these parts?

A: The nominal varistor voltage is identical at 820 V. The maximum varistor voltage differs slightly (860 V vs. 902 V), which is within acceptable tolerance for transient suppression applications.

Q: How does the capacitance difference affect circuit performance?

A: The V511DB40 exhibits higher capacitance (2500 pF vs. 500 pF at 1 MHz). This parameter is application-dependent and must be evaluated against specific circuit requirements, particularly in high-frequency or sensitive signal applications.

Q: What are the compliance implications of this substitution?

A: The V511DB40 is ROHS3 compliant and REACH unaffected, whereas the V510PA80C is RoHS non-compliant. This substitution improves regulatory alignment for new designs and systems subject to environmental compliance requirements.

Q: Is the increased surge current rating (40 kA vs. 6.5 kA) a concern?

A: No. Higher surge current capacity is a performance enhancement that provides additional protection margin. It does not create compatibility issues in applications designed for the original 6.5 kA rating.

Q: Must the mounting configuration change from base mount to blade type?

A: The mechanical transition is necessary due to product obsolescence. The blade type encased design is mechanically compatible with chassis mount installations and provides improved thermal management.