V320LA20C Equivalent & Substitute Parts

Part Overview

The V320LA20C is a 510 V, 6.5 kA varistor manufactured by Littelfuse Inc. in the C-III series, designed for transient voltage suppression applications. This component is classified as obsolete, making equivalent substitute parts necessary for ongoing system support and new design implementations. The varistor provides single-circuit protection in a through-hole disc package measuring 14mm, suitable for AC voltage environments up to 320 V.

Substiute Parts

V320LA20C

Littelfuse Inc.In Stock: 967V320LA20C Datasheet

Current PartRFQ

V320LA20CP

LittelfuseIn Stock: 11157V320LA20CP Datasheet

DirectRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution of the V320LA20C is determined by strict equivalence across all critical electrical and mechanical parameters. The substitute part V320LA20CP maintains identical specifications for varistor voltage (510 V typical, 462–558 V range), surge current capacity (6.5 kA), energy rating (165 J), maximum AC voltage (320 V), capacitance (5000 pF @ 1 MHz), and operating temperature range (-55°C to 85°C). Both components use the same through-hole disc 14mm package and are manufactured by Littelfuse Inc. within the C-III series.

The primary distinction between these parts is product status and packaging format. The V320LA20C is obsolete, while the V320LA20CP remains active in production. Both maintain ROHS3 compliance and MSL Level 1 rating, ensuring environmental and moisture compatibility across applications.

Parameter Comparison

Engineering Selection Recommendations

The V320LA20CP is the direct substitute for the obsolete V320LA20C. Both components are manufactured by Littelfuse Inc. and share identical electrical and mechanical specifications across all critical parameters. The V320LA20CP is currently in active production status, ensuring availability for new designs and replacement applications.

Both parts maintain ROHS3 compliance and carry MSL Level 1 rating, confirming suitability for standard manufacturing and storage environments. The through-hole disc 14mm package format is consistent between both parts, allowing direct board-level substitution without PCB redesign.

Frequently Asked Questions (FAQ)

Q: Can V320LA20CP directly replace V320LA20C in existing designs? A: Yes. Both components are electrically and mechanically identical across all specified parameters, including varistor voltage (510 V typical), surge current (6.5 kA), energy rating (165 J), and package format (disc 14mm through-hole). Direct substitution is supported without circuit modification.

Q: What is the primary reason for substitution? A: The V320LA20C is classified as obsolete. The V320LA20CP provides continued access to equivalent functionality from active production inventory.

Q: Are there packaging differences between these parts? A: The V320LA20C is supplied in standard packaging, while the V320LA20CP is supplied in bulk packaging. Both use the same disc 14mm through-hole package format and are functionally equivalent.

Q: Do both parts meet the same compliance standards? A: Yes. Both V320LA20C and V320LA20CP are ROHS3 compliant and carry MSL Level 1 rating, confirming equivalent environmental and moisture sensitivity classifications.

Q: What is the operating temperature range for these varistors? A: Both components operate across -55°C to 85°C, supporting standard industrial and commercial temperature environments.

Q: Are there any electrical performance differences? A: No. Both parts maintain identical varistor voltage specifications (462–558 V range, 510 V typical), surge current capacity (6.5 kA), capacitance (5000 pF @ 1 MHz), and energy rating (165 J).