V575LA40A Equivalent & Substitute Parts

Part Overview

The V575LA40A 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 575 V AC / 730 V DC maximum ratings.

The V575LA40A is classified as obsolete. Identifying equivalent 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

V575LA40A

Littelfuse Inc.In Stock: 1417V575LA40A Datasheet

Current PartRFQ

V575LA40AP

Littelfuse Inc.In Stock: 1823V575LA40AP Datasheet

DirectRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution of the V575LA40A is determined by strict equivalence across the following critical parameters:

• Varistor voltage range (Min: 819 V, Typ: 910 V, Max: 1.001 kV)
• Surge current rating (4.5 kA)
• Maximum AC and DC voltage ratings (575 V AC / 730 V DC)
• Energy dissipation capacity (120 J)
• Mounting configuration (through-hole disc 14mm)
• Number of circuits (1)
• Operating temperature range (-55°C to 85°C)
• Capacitance specification (220 pF @ 1 MHz)

Only parts meeting all these parameters within the specified tolerances qualify as direct substitutes. Packaging format (bulk vs. tape/reel) does not affect electrical equivalence.

Parameter Comparison

Engineering Selection Recommendations

The V575LA40AP is a direct electrical and mechanical equivalent to the V575LA40A. Both parts are manufactured by Littelfuse Inc. within the LA series and share identical electrical specifications across all critical parameters.

The primary distinction is product status: V575LA40A is obsolete, while V575LA40AP is active. The V575LA40AP is the recommended substitute for new designs, ongoing production, and field replacements.

Both parts maintain ROHS3 compliance, identical moisture sensitivity ratings (MSL 1), and equivalent export classifications (ECCN EAR99, HTSUS 8533.40.4000). Packaging format differs (V575LA40A standard vs. V575LA40AP bulk), but this does not affect circuit performance or board-level compatibility.

Frequently Asked Questions (FAQ)

Q: Can V575LA40AP be used as a direct replacement for V575LA40A?

A: Yes. The V575LA40AP is electrically and mechanically identical to the V575LA40A. All electrical parameters, operating ranges, and physical dimensions are equivalent. The primary difference is product status and packaging format.

Q: What is the difference between V575LA40A and V575LA40AP?

A: The V575LA40A is obsolete; the V575LA40AP is active. Both share identical electrical specifications (910 V typical varistor voltage, 4.5 kA surge current, 120 J energy rating). Packaging differs: V575LA40A is standard packaging; V575LA40AP is bulk packaging. This distinction does not affect electrical performance or circuit compatibility.

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

A: No. Both parts are ROHS3 compliant, carry identical moisture sensitivity ratings (MSL 1), and share the same export classifications (ECCN EAR99, HTSUS 8533.40.4000).

Q: What parameters must match for a varistor to be considered equivalent to the V575LA40A?

A: Equivalent varistors must match the following specifications: 910 V typical varistor voltage (range 819 V to 1.001 kV), 4.5 kA surge current, 575 V AC / 730 V DC maximum ratings, 120 J energy dissipation, through-hole mounting, disc 14mm package, single circuit configuration, 220 pF capacitance at 1 MHz, and -55°C to 85°C operating temperature range.

Q: Is the packaging format (bulk vs. standard) relevant to circuit compatibility?

A: No. Packaging format affects procurement and handling but does not influence electrical performance or board-level compatibility. Both formats contain identical components.