LVR005S-1 Equivalent & Substitute Parts

Part Overview

The LVR005S-1 is a Polymeric PTC Resettable Fuse manufactured by Littelfuse Inc. in the PolySwitch® LVR series. This component is rated for 240V (265V internal) with a 50 mA hold current and is designed for through-hole radial mounting in disc configuration. The LVR005S-1 is currently listed as obsolete, making identification of active equivalent parts essential for ongoing design support and procurement.

Substiute Parts

LVR005S-1

Littelfuse Inc.In Stock: 762LVR005S-1 Datasheet

Current PartRFQ

LVR005NS-1

LittelfuseIn Stock: 984LVR005NS-1 Datasheet

DirectRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution of the obsolete LVR005S-1 is based on electrical and mechanical parameter equivalence within the PolySwitch® LVR series. The primary substitution criteria are:

• Voltage rating: 240V (265V internal) maximum
• Current hold specification: 50 mA
• Current trip specification: 120 mA
• Time to trip: 10 seconds
• Resistance characteristics: Initial minimum 18.5 Ohms, post-trip maximum 65 Ohms
• Operating temperature range: -20°C to 85°C
• Mounting configuration: Through-hole radial disc package
• Lead spacing: 0.200" (5.08mm)
• Regulatory compliance: CQC, CSA, TUV, UL certifications

The LVR005NS-1 meets all these electrical specifications and maintains identical lead spacing and mounting type, making it a direct functional equivalent despite minor physical dimension variations.

Parameter Comparison

Engineering Selection Recommendations

The LVR005NS-1 is the direct active equivalent for the obsolete LVR005S-1. Both components are manufactured by Littelfuse within the PolySwitch® LVR series and share identical electrical specifications, lead spacing, and regulatory certifications (CQC, CSA, TUV, UL). The LVR005NS-1 maintains ROHS3 compliance and is currently in active production status, ensuring long-term availability and supply chain continuity.

Physical dimensions differ slightly between the two parts (LVR005S-1: 0.327" Dia x 0.150" T; LVR005NS-1: 0.272" Dia x 0.181" T), but both maintain the same 0.200" lead spacing and radial disc configuration. These dimensional variations do not affect electrical performance or functional compatibility in standard through-hole PCB applications.

Frequently Asked Questions (FAQ)

Q: Can LVR005NS-1 be used as a direct replacement for LVR005S-1?

A: Yes. The LVR005NS-1 is electrically and functionally equivalent to the LVR005S-1. Both components have identical voltage ratings (240V/265V internal), current specifications (50 mA hold, 120 mA trip), resistance characteristics, and lead spacing (0.200"). The LVR005NS-1 is the active production equivalent.

Q: Are there physical dimension differences between these parts?

A: Yes. The LVR005S-1 measures 0.327" diameter by 0.150" thickness, while the LVR005NS-1 measures 0.272" diameter by 0.181" thickness. Despite these variations, both maintain identical lead spacing of 0.200" (5.08mm) and are compatible with standard through-hole radial mounting on PCBs.

Q: Do both parts meet the same regulatory certifications?

A: Yes. Both the LVR005S-1 and LVR005NS-1 carry identical approvals from CQC, CSA, TUV, and UL. Both are ROHS3 compliant.

Q: Why is the LVR005S-1 listed as obsolete?

A: The LVR005S-1 has been superseded by the LVR005NS-1 within Littelfuse's product line. The LVR005NS-1 is the current active production part and is recommended for new designs and ongoing procurement.

Q: What is the lead spacing for these components?

A: Both the LVR005S-1 and LVR005NS-1 have a lead spacing of 0.200" (5.08mm), maintaining compatibility with standard through-hole PCB layouts.