V660LC50AP Equivalent & Substitute Parts

Part Overview

The V660LC50AP is a 1.08 kV, 4.5 kA varistor manufactured by Littelfuse Inc., designed for transient voltage suppression applications. This through-hole disc component (14mm) operates across a temperature range of -55°C to 85°C and is ROHS3 compliant. The part is currently in active production status with 793 units available in inventory. Substitute parts are identified when electrical and mechanical parameters remain within the specified tolerances for this varistor category.

Substiute Parts

V660LC50AP

Littelfuse Inc.In Stock: 881V660LC50AP Datasheet

Current PartRFQ

V660LA50AP

Littelfuse Inc.In Stock: 3391V660LA50AP Datasheet

Parametric EquivalentRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution eligibility for the V660LC50AP is determined by strict equivalence across the following critical parameters:

• Maximum AC Volts: 660 V
• Maximum DC Volts: 850 V
• Varistor Voltage (Typ): 1.08 kV
• Current - Surge: 4.5 kA
• Energy: 140 J
• Number of Circuits: 1
• Mounting Type: Through Hole
• Package / Case: Disc 14mm
• Operating Temperature Range: -55°C to 85°C
• RoHS Compliance: ROHS3 Compliant

The V660LA50AP meets all specified electrical and mechanical parameters and is therefore classified as a parametric equivalent. Both parts belong to the Littelfuse varistor product line and share identical performance characteristics within the defined operating envelope.

Parameter Comparison

Engineering Selection Recommendations

Both the V660LC50AP and V660LA50AP are active production components manufactured by Littelfuse Inc. with identical electrical specifications and mechanical form factors. Selection between these parts may be based on inventory availability and supply chain considerations. The V660LA50AP currently has 3,345 units in stock compared to 793 units for the V660LC50AP. Both parts maintain ROHS3 compliance, REACH unaffected status, and EAR99 export classification. The series designation difference (LC versus LA) reflects internal Littelfuse product line categorization but does not affect functional equivalence for transient voltage suppression applications.

Frequently Asked Questions (FAQ)

Q: Are V660LC50AP and V660LA50AP electrically interchangeable?

A: Yes. Both parts share identical electrical parameters including varistor voltage (1.08 kV typical), surge current rating (4.5 kA), energy dissipation (140 J), and operating temperature range (-55°C to 85°C).

Q: Do these parts have the same physical dimensions and mounting requirements?

A: Yes. Both components use through-hole mounting with a 14mm disc package, ensuring mechanical compatibility in existing PCB designs.

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

A: No. Both parts are ROHS3 compliant, REACH unaffected, and carry the same ECCN (EAR99) and HTSUS (8533.40.4000) classifications.

Q: What is the difference between the LC and LA series designations?

A: The series designation reflects Littelfuse internal product line categorization. From an engineering standpoint, both series meet identical performance specifications for this voltage and current rating.

Q: Can I use V660LA50AP as a direct replacement for V660LC50AP in production?

A: Yes, provided your design does not specify a particular series requirement. The electrical and mechanical parameters are equivalent.