V275PA40C Equivalent & Substitute Parts

Part Overview

The V275PA40C is a 430 V, 6.5 kA varistor manufactured by Littelfuse, designed for transient voltage suppression in chassis mount applications. This component is classified as obsolete, making equivalent substitutes necessary for new designs and ongoing maintenance requirements. The part operates across a temperature range of -55°C to 85°C and is housed in a base mount package configuration.

Substiute Parts

V275PA40C

LittelfuseIn Stock: 1190V275PA40C Datasheet

Current PartRFQ

B72232B0271K001

EPCOS - TDK ElectronicsIn Stock: 2802B72232B0271K001 Datasheet

MFR RecommendedRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution of the V275PA40C is determined by the following critical electrical and mechanical parameters:

• Voltage Rating: Varistor voltage must remain at 430 V (typical) to maintain circuit protection characteristics
• Surge Current Capacity: Minimum 6.5 kA requirement for transient suppression performance
• Number of Circuits: Single circuit configuration required
• Mounting Configuration: Chassis mount capability with compatible mechanical interface
• Operating Temperature: Must support the -55°C to 85°C range or equivalent

The substitute part B72232B0271K001 meets these criteria with enhanced surge current capacity (25 kA) and energy absorption (360 J), providing superior performance margins while maintaining voltage regulation compatibility.

Parameter Comparison

Engineering Selection Recommendations

The B72232B0271K001 is the designated manufacturer-recommended substitute for the V275PA40C. Selection of this substitute is supported by the following factors:

• Product Status: The substitute is active and currently manufactured, ensuring long-term availability and supply chain continuity
• Regulatory Compliance: The B72232B0271K001 is ROHS3 compliant, meeting current environmental and regulatory requirements, whereas the V275PA40C is non-compliant
• Electrical Compatibility: Both parts maintain the same 430 V typical varistor voltage and single-circuit configuration, ensuring functional equivalence in circuit protection applications
• Performance Enhancement: The substitute provides increased surge current capacity (25 kA versus 6.5 kA) and energy absorption (360 J versus 140 J), delivering improved transient suppression margins
• Temperature Operating Range: The substitute operates from -40°C to 85°C, which covers the upper portion of the original part's range; applications requiring the full -55°C minimum must be evaluated for compatibility

Frequently Asked Questions (FAQ)

Q: Can the B72232B0271K001 directly replace the V275PA40C in existing designs?

A: Yes, the B72232B0271K001 is electrically compatible as a direct substitute. Both parts maintain 430 V typical varistor voltage and single-circuit configuration. Mechanical mounting compatibility must be verified, as the original uses base mount packaging while the substitute uses encased disc packaging.

Q: What is the difference in surge current capacity between these parts?

A: The V275PA40C is rated for 6.5 kA surge current, while the B72232B0271K001 is rated for 25 kA. The substitute provides significantly higher transient suppression capability, which is beneficial for applications with severe surge conditions.

Q: Does the operating temperature range difference affect substitution?

A: The V275PA40C operates from -55°C to 85°C, while the B72232B0271K001 operates from -40°C to 85°C. Applications requiring operation below -40°C must be evaluated separately, as the substitute does not cover the full lower temperature range of the original part.

Q: What are the packaging differences between these parts?

A: The V275PA40C uses base mount packaging, while the B72232B0271K001 uses encased disc packaging. Physical mounting interface compatibility must be confirmed before implementation in existing mechanical assemblies.

Q: Why is RoHS compliance important for this substitution?

A: The V275PA40C is RoHS non-compliant, while the B72232B0271K001 is ROHS3 compliant. For applications subject to environmental regulations or customer requirements mandating RoHS compliance, the substitute meets these standards while the original part does not.

Q: Are there any DC voltage rating considerations?

A: The V275PA40C has a maximum DC voltage rating of 369 V, while the B72232B0271K001 is rated for 350 V. Both parts maintain adequate DC voltage margins for 430 V typical varistor voltage applications; however, designs operating near the upper DC voltage limit should be reviewed.