V575LC40A Equivalent & Substitute Parts

Part Overview

The V575LC40A is a 910 V, 4.5 kA Transient Voltage Suppressor (TVS) varistor manufactured by Littelfuse Inc. in a through-hole disc package (14mm). This component is designed for transient overvoltage protection in electronic circuits operating at maximum AC voltages of 575 V and maximum DC voltages of 730 V.

The V575LC40A is classified as obsolete. Identifying equivalent and substitute parts is necessary to maintain design continuity, ensure supply chain availability, and support ongoing production or repair requirements for systems utilizing this component.

Substiute Parts

V575LC40A

Littelfuse Inc.In Stock: 1080V575LC40A Datasheet

Current PartRFQ

V575LC40AP

Littelfuse Inc.In Stock: 714V575LC40AP Datasheet

DirectRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution of the V575LC40A is determined by strict equivalence across the following critical parameters:

• Varistor voltage range (minimum, typical, and maximum values)
• Surge current rating (4.5 kA)
• Maximum AC and DC voltage ratings
• Energy dissipation capacity (120 J)
• Mounting type (through hole)
• Physical package dimensions (disc 14mm)
• Operating temperature range (-55°C to 85°C)
• Number of circuits (1)
• Compliance certifications (ROHS3)

The V575LC40AP is a direct substitute manufactured by Littelfuse Inc. in the same LC series. It maintains identical electrical specifications and physical form factor while differing only in packaging format (bulk versus tape/reel) and product status (active versus obsolete).

Parameter Comparison

Engineering Selection Recommendations

The V575LC40AP is the primary substitute for the obsolete V575LC40A. Both components are manufactured by Littelfuse Inc. and maintain identical electrical and mechanical specifications across all critical parameters. The V575LC40AP carries active product status, ensuring ongoing availability and manufacturing support.

Both parts meet ROHS3 compliance requirements and carry identical moisture sensitivity ratings. The distinction between the two parts is limited to packaging format and product lifecycle status. Selection of the V575LC40AP is appropriate for new designs, production continuity, and replacement applications where the V575LC40A is no longer available.

Frequently Asked Questions (FAQ)

Q: Can the V575LC40AP directly replace the V575LC40A in existing designs?

A: Yes. The V575LC40AP is electrically and mechanically identical to the V575LC40A. All critical parameters—varistor voltage, surge current rating, voltage ratings, energy dissipation, operating temperature range, and physical package dimensions—are equivalent. The only differences are packaging format and product status.

Q: What is the difference between the V575LC40A and V575LC40AP?

A: The V575LC40A is supplied in tape/reel packaging and is classified as obsolete. The V575LC40AP is supplied in bulk packaging and maintains active product status. Electrical and mechanical specifications are identical.

Q: Are there any compliance or certification differences between these parts?

A: No. Both parts are ROHS3 compliant, carry identical moisture sensitivity levels (MSL 1), and share the same ECCN and HTSUS classifications.

Q: What mounting considerations apply to this component?

A: Both parts are through-hole mounted disc varistors with 14mm physical dimensions. PCB layout and mounting procedures remain unchanged between the two parts.

Q: Why is the V575LC40A listed as obsolete?

A: Product obsolescence reflects the manufacturer's lifecycle management. The V575LC40AP, as the active equivalent, is the recommended source for ongoing supply.