V320LT20C Equivalent & Substitute Parts

Part Overview

The V320LT20C is a 510 V, 6.5 kA Transient Voltage Suppressor (TVS) varistor manufactured by Littelfuse in the C-III series. This through-hole disc component (14mm) is designed for transient voltage protection in electronic circuits. The V320LT20C is currently listed as obsolete, making identification of equivalent substitute parts essential for ongoing design support and component procurement.

Substiute Parts

V320LT20C

LittelfuseIn Stock: 1018V320LT20C Datasheet

Current PartRFQ

V320LT20CP

Littelfuse Inc.In Stock: 1134V320LT20CP Datasheet

DirectRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution of the V320LT20C is determined by strict equivalence across the following electrical and mechanical parameters:

• Varistor Voltage (Typical): 510 V nominal specification
• Varistor Voltage Range: 462 V minimum to 558 V maximum tolerance band
• Current - Surge Rating: 6.5 kA transient current capacity
• Energy Absorption: 165 J energy handling capability
• Maximum AC Volts: 320 V AC rating
• Number of Circuits: Single circuit configuration
• Capacitance @ 1 MHz: 5000 pF specification
• Operating Temperature Range: -55°C to 85°C
• Mounting Type: Through Hole configuration
• Package / Case: Disc 14mm form factor

The V320LT20CP meets all these electrical and mechanical specifications identically. The primary distinction between the main part and its substitute is packaging format and product status.

Parameter Comparison

Engineering Selection Recommendations

The V320LT20CP is a direct electrical and mechanical equivalent to the V320LT20C. Both components are manufactured by Littelfuse in the C-III series and share identical electrical specifications across all critical parameters: 510 V varistor voltage, 6.5 kA surge current, 165 J energy absorption, and -55°C to 85°C operating temperature range.

The V320LT20CP is currently in active production status, whereas the V320LT20C is obsolete. Both components maintain ROHS3 compliance and identical moisture sensitivity ratings (MSL 1 - Unlimited).

The functional difference between these parts is packaging format: the V320LT20C is supplied in bulk packaging, while the V320LT20CP is supplied in Tape & Reel (TR) format. This distinction affects procurement and assembly processes but does not alter electrical or mechanical performance.

For new designs or component replacement requiring the V320LT20C specification, the V320LT20CP is the appropriate active production substitute.

Frequently Asked Questions (FAQ)

Q: Can V320LT20CP be used as a direct replacement for V320LT20C?

A: Yes. The V320LT20CP is electrically and mechanically identical to the V320LT20C. All electrical parameters, operating temperature range, package dimensions, and mounting type are equivalent. The only difference is packaging format (Tape & Reel versus bulk).

Q: What is the difference between V320LT20C and V320LT20CP?

A: The V320LT20C is supplied in bulk packaging and is obsolete. The V320LT20CP is supplied in Tape & Reel (TR) format and is in active production. Electrical specifications and physical dimensions are identical.

Q: Why is the V320LT20C listed as obsolete?

A: The V320LT20C has been discontinued by Littelfuse. The V320LT20CP serves as the active production equivalent with identical electrical and mechanical specifications.

Q: Does packaging format affect circuit performance?

A: No. Packaging format (bulk versus Tape & Reel) affects procurement, storage, and assembly processes but does not alter electrical performance or component specifications.

Q: Are both parts ROHS3 compliant?

A: Yes. Both the V320LT20C and V320LT20CP are ROHS3 compliant with MSL 1 (Unlimited) moisture sensitivity rating.

Q: What are the critical electrical parameters for substitution?

A: The critical parameters are: 510 V varistor voltage (462 V – 558 V range), 6.5 kA surge current, 165 J energy absorption, 320 V maximum AC voltage, 5000 pF capacitance at 1 MHz, and -55°C to 85°C operating temperature range.