V320LC40C Equivalent & Substitute Parts

Part Overview

The V320LC40C is a 510 V, 10 kA varistor manufactured by Littelfuse Inc., designed for transient voltage suppression in through-hole applications. This component features a disc form factor with 20mm dimensions and is rated for -55°C to 85°C operating temperature range. The part is currently obsolete, making identification of suitable substitutes essential for ongoing system support and component procurement.

Substiute Parts

V320LC40C

Littelfuse Inc.In Stock: 1149V320LC40C Datasheet

Current PartRFQ

V320LC40CP

Littelfuse Inc.In Stock: 828V320LC40CP Datasheet

DirectRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution for the V320LC40C is determined by electrical and mechanical parameter equivalence within the Littelfuse C-III varistor series. The critical parameters governing substitutability are:

• Varistor voltage rating (462 V – 558 V range)
• Surge current capacity (10 kA)
• Energy absorption (345 J)
• Capacitance characteristics (7000 pF @ 1 MHz)
• Operating temperature range (-55°C to 85°C)
• Through-hole mounting configuration
• Disc 20mm package geometry

The V320LC40CP meets all these electrical and mechanical requirements and is classified as a direct substitute. The primary distinction between these parts is packaging format and product status.

Parameter Comparison

Engineering Selection Recommendations

The V320LC40CP is the direct electrical and mechanical equivalent of the V320LC40C. Both components are manufactured by Littelfuse Inc. within the C-III series and share identical electrical specifications, thermal ratings, and physical form factors.

The V320LC40CP is currently in active production status, whereas the V320LC40C is obsolete. For new designs and ongoing component procurement, the V320LC40CP is the appropriate selection. Both parts maintain ROHS3 compliance and identical moisture sensitivity ratings, ensuring compatibility with current manufacturing and environmental standards.

The substitution is based on complete parameter equivalence across all critical electrical and mechanical specifications. No performance degradation or functional compromise occurs when transitioning from V320LC40C to V320LC40CP.

Frequently Asked Questions (FAQ)

Q: Can V320LC40CP be used as a direct replacement for V320LC40C?

A: Yes. The V320LC40CP is electrically and mechanically equivalent to the V320LC40C. Both components share identical varistor voltage ratings (510 V typical), surge current capacity (10 kA), energy absorption (345 J), capacitance characteristics, operating temperature range, and disc 20mm package geometry.

Q: What is the primary difference between V320LC40C and V320LC40CP?

A: The V320LC40C is obsolete, while V320LC40CP is in active production. The packaging format differs (the V320LC40CP is supplied in bulk packaging), but electrical and mechanical specifications are identical.

Q: Are there any compliance or certification differences?

A: Both parts maintain ROHS3 compliance and identical moisture sensitivity levels (MSL 1 - Unlimited). No compliance or certification differences exist between these components.

Q: Can these parts be used interchangeably in existing assemblies?

A: Yes. The identical through-hole mounting configuration, disc 20mm package dimensions, and electrical specifications ensure direct interchangeability in existing circuit designs and PCB layouts.

Q: What inventory status should be considered for procurement?

A: The V320LC40CP is the recommended choice for new procurement due to its active product status and current availability. The V320LC40C, being obsolete, should not be specified for new designs or long-term inventory planning.