V320LU20AP Equivalent & Substitute Parts

Part Overview

The V320LU20AP is a 510 V, 4.5 kA disc varistor manufactured by Littelfuse Inc., designed for transient voltage suppression in through-hole applications. This component operates across a temperature range of -55°C to 85°C and is ROHS3 compliant. The part is currently in active production status with 3500 units available in inventory. Alternative part numbers may be required due to packaging availability, supply chain considerations, or specific procurement requirements.

Substiute Parts

V320LU20AP

Littelfuse Inc.In Stock: 3591V320LU20AP Datasheet

Current PartRFQ

V320LS20AP

Littelfuse Inc.In Stock: 3695V320LS20AP Datasheet

Parametric EquivalentRFQ

Key Parameters

Substitute Part Grouping Explanation

The V320LS20AP qualifies as a parametric equivalent to the V320LU20AP based on the following criteria:

Electrical Parameters Match:

• Varistor voltage range: 459 V (Min) to 561 V (Max), with 510 V typical
• Surge current rating: 4.5 kA
• Maximum AC/DC voltage ratings: 320 V AC, 420 V DC
• Energy dissipation: 80 J
• Capacitance: 380 pF @ 1 MHz
• Operating temperature: -55°C to 85°C

Mechanical Compatibility:

• Package type: Disc 14mm
• Mounting: Through Hole
• Number of circuits: 1

Compliance & Status:

• Both parts are ROHS3 compliant
• Both are REACH unaffected
• Both maintain active production status

The primary difference between these parts is packaging format: V320LU20AP is supplied in Tape & Reel (TR), while V320LS20AP is supplied in Cut Tape (CT). This distinction affects procurement and automated assembly processes but does not alter electrical or mechanical performance.

Parameter Comparison

Engineering Selection Recommendations

Both V320LU20AP and V320LS20AP are suitable for direct substitution in applications requiring 510 V varistor protection with 4.5 kA surge current capacity. Selection between these parts should be based on procurement and assembly requirements:

V320LU20AP (Tape & Reel): Preferred for high-volume automated assembly operations where reel-fed component placement equipment is utilized.

V320LS20AP (Cut Tape): Suitable for lower-volume production, manual assembly, or situations where reel inventory is unavailable. Both parts maintain identical electrical performance and thermal characteristics across the specified operating range.

Both components satisfy ROHS3 and REACH compliance requirements and carry MSL rating 1, indicating no moisture sensitivity limitations during storage or handling.

Frequently Asked Questions (FAQ)

Q: Can V320LS20AP replace V320LU20AP in existing designs? A: Yes. Both parts are electrically and mechanically identical. The only difference is packaging format (Cut Tape vs. Tape & Reel). No circuit modifications are required.

Q: What is the difference between Tape & Reel and Cut Tape packaging? A: Tape & Reel (TR) packaging supplies components on continuous reels suitable for automated pick-and-place equipment. Cut Tape (CT) packaging provides components in tape strips without reels, typically used for manual assembly or lower-volume applications. Electrical performance is identical.

Q: Are both parts ROHS3 compliant? A: Yes. Both V320LU20AP and V320LS20AP are ROHS3 compliant and REACH unaffected.

Q: What is the moisture sensitivity level for these parts? A: Both parts carry MSL rating 1 (Unlimited), indicating no moisture sensitivity restrictions during storage or handling.

Q: Do these parts have the same surge current rating? A: Yes. Both parts are rated for 4.5 kA surge current with 80 J energy dissipation capacity.

Q: Can these parts be used interchangeably in automated assembly? A: V320LU20AP (Tape & Reel) is optimized for automated assembly. V320LS20AP (Cut Tape) requires manual feeding or compatible cut-tape handling equipment. Verify your assembly equipment compatibility before substitution.