V300LS4 Equivalent & Substitute Parts

Part Overview

The V300LS4 is a 470 V, 1.2 kA disc varistor manufactured by Littelfuse Inc., designed for transient voltage suppression in through-hole applications. This part is classified as obsolete, making equivalent substitute parts necessary for ongoing production and maintenance requirements. Substitute parts maintain identical electrical and mechanical specifications while offering active product status and improved availability.

Substiute Parts

V300LS4

Littelfuse Inc.In Stock: 1170V300LS4 Datasheet

Current PartRFQ

V300LS4P

Littelfuse Inc.In Stock: 20911V300LS4P Datasheet

DirectRFQ

V300LS4PX2855

Littelfuse Inc.In Stock: 880V300LS4PX2855 Datasheet

Parametric EquivalentRFQ

V300LT4P

Littelfuse Inc.In Stock: 11791V300LT4P Datasheet

Parametric EquivalentRFQ

V300LT4PX2855

LittelfuseIn Stock: 1139V300LT4PX2855 Datasheet

Parametric EquivalentRFQ

V300LU4PX2855

Littelfuse Inc.In Stock: 810V300LU4PX2855 Datasheet

Parametric EquivalentRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitute parts for the V300LS4 are grouped based on strict electrical and mechanical parameter equivalence. All substitute parts maintain identical specifications across the following critical parameters:

• Varistor voltage range (423 V minimum to 517 V maximum)
• Surge current rating (1.2 kA)
• Energy dissipation (25 J)
• Capacitance (70 pF @ 1 MHz)
• Operating temperature range (-55°C to 85°C)
• Through-hole mounting configuration
• Disc 7mm package geometry
• Single circuit configuration
• ROHS3 compliance

Substitutes differ only in packaging format (Cut Tape vs. Tape & Reel) and product series designation (LS, LT, LU), with all substitute parts maintaining active product status.

Parameter Comparison

Engineering Selection Recommendations

All listed substitute parts are manufactured by Littelfuse Inc. and maintain full ROHS3 compliance with REACH unaffected status. Selection between substitute options should be based on packaging requirements and procurement workflow:

V300LS4P and V300LT4P are available in Cut Tape packaging, suitable for manual assembly and lower-volume applications. V300LS4PX2855, V300LT4PX2855, and V300LU4PX2855 are supplied in Tape & Reel format, optimized for automated pick-and-place assembly processes. All substitute parts are active products with established supply chains, eliminating obsolescence risk associated with the original V300LS4.

Frequently Asked Questions (FAQ)

Q: Can V300LS4 be directly replaced with V300LS4P?

A: Yes. V300LS4P is a direct substitute with identical electrical and mechanical specifications. The difference is packaging format (Cut Tape vs. bulk) and active product status.

Q: What is the difference between V300LS4P and V300LS4PX2855?

A: Both parts are electrically and mechanically identical. V300LS4PX2855 is supplied in Tape & Reel packaging for automated assembly, while V300LS4P uses Cut Tape packaging. Selection depends on assembly process requirements.

Q: Are V300LT4P and V300LU4P series interchangeable with V300LS4?

A: Yes. V300LT4P and V300LU4PX2855 maintain all critical electrical parameters (470 V typical varistor voltage, 1.2 kA surge current, 25 J energy) and mechanical specifications (through-hole, disc 7mm package). Series designation differences do not affect functional equivalence.

Q: What packaging format should be selected for high-volume production?

A: Tape & Reel packaging (X2855 suffix variants) is recommended for automated assembly lines. Cut Tape variants (P suffix) are suitable for manual assembly or lower-volume applications.

Q: Are all substitute parts ROHS3 compliant?

A: Yes. All listed substitute parts maintain ROHS3 compliance and REACH unaffected status, meeting current environmental and regulatory requirements.