V320LA40C Equivalent & Substitute Parts

Part Overview

The V320LA40C is a 510 V, 10 kA varistor manufactured by Littelfuse Inc., designed for transient voltage suppression applications. This component features a through-hole disc package (20mm) and is rated for single-circuit protection with 345 J energy absorption capability. The V320LA40C is classified as obsolete, making identification of active equivalent parts essential for ongoing procurement and system maintenance.

Substiute Parts

V320LA40C

Littelfuse Inc.In Stock: 1027V320LA40C Datasheet

Current PartRFQ

V320LA40CP

Littelfuse Inc.In Stock: 1801V320LA40CP Datasheet

DirectRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution of the V320LA40C is determined by strict equivalence across the following critical parameters:

• Varistor Voltage (Typical): 510 V nominal rating
• Varistor Voltage Range: 462 V minimum to 558 V maximum
• Current - Surge Rating: 10 kA
• Maximum AC Volts: 320 V
• Energy Absorption: 345 J
• Number of Circuits: Single circuit (1)
• Mounting Type: Through Hole
• Package / Case: Disc 20mm form factor
• Operating Temperature Range: -55°C to +85°C

The V320LA40CP is a direct equivalent part manufactured by Littelfuse Inc. within the same C-III series. Both parts share identical electrical specifications, thermal ratings, and mechanical packaging. The primary distinction is product status: V320LA40C is obsolete, while V320LA40CP is active production.

Parameter Comparison

Engineering Selection Recommendations

The V320LA40CP is the direct active equivalent for the obsolete V320LA40C. Both components are manufactured by Littelfuse Inc. and maintain identical electrical, thermal, and mechanical specifications across all critical parameters. The V320LA40CP is ROHS3 compliant and carries REACH Unaffected status, meeting current regulatory requirements for new designs and procurement cycles.

Selection of V320LA40CP over V320LA40C is driven by product lifecycle status: V320LA40C is no longer in active production, while V320LA40CP remains available through standard distribution channels. For applications currently using V320LA40C, direct substitution with V320LA40CP requires no circuit redesign or validation beyond standard component qualification procedures.

Frequently Asked Questions (FAQ)

Q: Can V320LA40CP be used as a direct replacement for V320LA40C?

A: Yes. Both parts are electrically and mechanically identical across all specified parameters. The V320LA40CP is the active production equivalent of the obsolete V320LA40C.

Q: What is the difference between V320LA40C and V320LA40CP?

A: The primary difference is product status. V320LA40C is obsolete; V320LA40CP is active production. All electrical specifications, thermal ratings, and mechanical packaging are identical.

Q: Are there any packaging differences between these parts?

A: V320LA40C is supplied in standard packaging; V320LA40CP is supplied in bulk packaging. Both use the same Disc 20mm through-hole form factor and are functionally interchangeable.

Q: What compliance certifications apply to V320LA40CP?

A: V320LA40CP is ROHS3 compliant and REACH Unaffected. Both parts carry EAR99 export classification and HTSUS code 8533.40.4000.

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

A: Yes. No circuit modifications are required. Both parts operate within identical voltage ranges (462 V – 558 V nominal 510 V), surge current ratings (10 kA), and temperature specifications (-55°C to +85°C).

Q: What is the moisture sensitivity level for these components?

A: Both V320LA40C and V320LA40CP carry MSL 1 (Unlimited), indicating no moisture sensitivity restrictions during storage or handling.