V575LC40AP Equivalent & Substitute Parts

Part Overview

The V575LC40AP 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 voltage protection in electronic circuits and is currently in active production status. Finding equivalent or substitute parts may be necessary due to inventory constraints, supply chain considerations, or design flexibility requirements while maintaining identical electrical and mechanical performance.

Substiute Parts

V575LC40AP

Littelfuse Inc.In Stock: 714V575LC40AP Datasheet

Current PartRFQ

V575LA40AP

Littelfuse Inc.In Stock: 1823V575LA40AP Datasheet

Parametric EquivalentRFQ

B72214S0551K101

EPCOS - TDK ElectronicsIn Stock: 27224B72214S0551K101 Datasheet

MFR RecommendedRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitute parts for the V575LC40AP are qualified based on the following critical parameters that determine functional equivalence:

• Maximum AC Volts: 575 V (±25 V tolerance acceptable)
• Maximum DC Volts: 730 V (±15 V tolerance acceptable)
• Varistor Voltage (Typical): 910 V (±91 V range acceptable)
• Current - Surge: 4.5 kA (exact match required)
• Energy: 120 J (exact match required)
• Mounting Type: Through Hole (exact match required)
• Package / Case: Disc 14mm (exact match required)
• RoHS Status: ROHS3 Compliant (compliance required)

Two substitute parts meet these criteria and are grouped as follows:

Parametric Equivalent: V575LA40AP (Littelfuse Inc., LA series) — identical electrical specifications and mechanical form factor, differing only in internal series designation.

Manufacturer Recommended Equivalent: B72214S0551K101 (EPCOS - TDK Electronics, Standard series) — meets all critical electrical parameters with minor variations in AC voltage rating (550 V vs. 575 V) and operating temperature range (-40°C to 105°C vs. -55°C to 85°C), representing a cross-manufacturer alternative.

Parameter Comparison

Engineering Selection Recommendations

V575LA40AP (Littelfuse Inc.): This part is the primary substitute for the V575LC40AP. Both components are manufactured by Littelfuse Inc., share identical electrical ratings and mechanical specifications, and maintain the same compliance certifications (ROHS3, REACH Unaffected, EAR99). Selection of this substitute introduces no technical risk and is suitable for direct replacement in all applications where the V575LC40AP is specified.

B72214S0551K101 (EPCOS - TDK Electronics): This cross-manufacturer substitute meets all critical electrical parameters (910 V typical varistor voltage, 4.5 kA surge current, 120 J energy rating) and maintains identical mechanical form factor (through-hole, disc 14mm package). The maximum AC voltage rating is 550 V (25 V lower than the primary part) and the operating temperature range extends to 105°C (20°C higher upper limit). This part is suitable for applications where the lower AC voltage rating and extended upper temperature capability are compatible with circuit requirements. All regulatory compliance certifications (ROHS3, REACH Unaffected, EAR99) are maintained.

Frequently Asked Questions (FAQ)

Q: Can V575LA40AP be used as a direct replacement for V575LC40AP?

A: Yes. Both parts are manufactured by Littelfuse Inc. and share identical electrical specifications (910 V typical varistor voltage, 4.5 kA surge current, 120 J energy), mechanical packaging (through-hole disc 14mm), and compliance certifications. The difference is limited to internal series designation (LA vs. LC).

Q: What are the key differences between V575LC40AP and B72214S0551K101?

A: Both parts maintain the same varistor voltage (910 V typical), surge current (4.5 kA), energy rating (120 J), and mechanical package (disc 14mm through-hole). The B72214S0551K101 has a maximum AC voltage rating of 550 V (compared to 575 V) and an extended operating temperature range of -40°C to 105°C (compared to -55°C to 85°C). The B72214S0551K101 is manufactured by EPCOS - TDK Electronics rather than Littelfuse Inc.

Q: Are all three parts ROHS3 compliant?

A: Yes. V575LC40AP, V575LA40AP, and B72214S0551K101 are all ROHS3 compliant and REACH unaffected.

Q: What determines whether a part can substitute for the V575LC40AP?

A: Substitution is determined by matching critical electrical parameters (varistor voltage, surge current, energy rating), mechanical specifications (mounting type, package form factor), and regulatory compliance status. Minor variations in maximum AC/DC voltage ratings and operating temperature ranges are acceptable if compatible with the application circuit requirements.

Q: Can the B72214S0551K101 be used in applications requiring the full -55°C lower temperature specification?

A: No. The B72214S0551K101 operating temperature range begins at -40°C. Applications requiring operation at -55°C must use V575LC40AP or V575LA40AP.

Q: Are there inventory differences between these parts?

A: Yes. V575LC40AP has 689 pieces in stock, V575LA40AP has 1732 pieces in stock, and B72214S0551K101 has 27153 pieces in stock. Inventory availability may influence part selection for supply chain considerations.