LVR005S Polymeric PTC Resettable Fuse - Equivalent & Substitute Parts

Part Overview

The LVR005S is a polymeric PTC resettable fuse manufactured by Littelfuse Inc., rated for 240V (265V internal) with a 50 mA hold current. This component is classified as obsolete, making identification of suitable substitute parts essential for ongoing design support and procurement. The LVR005S operates as a thermal protection device in through-hole radial configuration, suitable for applications requiring automatic current limiting and thermal reset capability.

Substiute Parts

LVR005S

Littelfuse Inc.In Stock: 59229LVR005S Datasheet

Current PartRFQ

LVR005NS

LittelfuseIn Stock: 722LVR005NS Datasheet

DirectRFQ

0ZRE0005FF1C

Bel Fuse Inc.In Stock: 1524960ZRE0005FF1C Datasheet

MFR RecommendedRFQ

0ZRE0005FF2C

Bel Fuse Inc.In Stock: 21900ZRE0005FF2C Datasheet

MFR RecommendedRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution eligibility for the LVR005S is determined by the following critical parameters:

Primary Matching Criteria:

• Voltage rating of 240V or higher
• Hold current (Ih) of 50 mA
• Trip current (It) of 120 mA
• Polymeric PTC type construction
• Through-hole radial mounting configuration
• Lead spacing of 0.200" (5.08mm) or 0.201" (5.10mm)

Secondary Compatibility Factors:

• Operating temperature range compatibility
• Regulatory approvals (UL, CSA, TUV certification)
• RoHS3 compliance status
• Physical dimensions permitting PCB layout accommodation

The substitute parts identified (LVR005NS, 0ZRE0005FF1C, 0ZRE0005FF2C) meet these core electrical and mechanical requirements, though variations exist in product status, packaging format, and dimensional specifications.

Parameter Comparison

Engineering Selection Recommendations

LVR005NS (Littelfuse - Direct Manufacturer Substitute)

The LVR005NS is the primary substitute option, manufactured by Littelfuse as an active product. This part maintains identical electrical specifications to the LVR005S, including voltage rating, hold current, trip current, and resistance characteristics. The LVR005NS carries the same regulatory approvals (CQC, CSA, TUV, UL) and RoHS3 compliance status. Physical dimensions differ slightly (0.272" Dia vs. 0.327" Dia), requiring verification of PCB layout accommodation. Packaging is supplied in bag format. This option is recommended for applications where Littelfuse product continuity is preferred.

0ZRE0005FF1C and 0ZRE0005FF2C (Bel Fuse Inc. - Cross-Manufacturer Substitutes)

Both Bel Fuse parts (0ZRE0005FF1C in Box packaging and 0ZRE0005FF2C in Cut Tape packaging) provide functional equivalence with the following considerations:

• Electrical parameters match core requirements: 240V rating, 50 mA hold current, 120 mA trip current, identical resistance specifications
• Extended operating temperature range (-40°C to 85°C) provides broader environmental capability
• Maximum current rating increased to 1.5 A and time-to-trip extended to 15 s represent higher energy handling capacity
• Regulatory approvals include cURus and TUV certification; UL certification is not listed
• Physical dimensions align with LVR005S (0.327" L x 0.150" W), supporting direct PCB layout compatibility
• Lead spacing tolerance (0.201" vs. 0.200") is within acceptable manufacturing variation

Selection between 0ZRE0005FF1C and 0ZRE0005FF2C depends on procurement requirements: Box packaging for bulk quantities or Cut Tape format for automated assembly processes.

Frequently Asked Questions (FAQ)

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

A: Yes. The LVR005NS maintains identical electrical specifications (240V, 50 mA hold current, 120 mA trip current) and regulatory approvals. Physical dimensions differ slightly; verify PCB layout accommodation before implementation.

Q: What are the key differences between Littelfuse and Bel Fuse substitute options?

A: LVR005NS is manufactured by Littelfuse with identical specifications to the obsolete LVR005S. The Bel Fuse parts (0ZRE0005FF1C and 0ZRE0005FF2C) offer extended temperature range (-40°C to 85°C), higher maximum current (1.5 A), and longer trip time (15 s). Both Bel Fuse options carry cURus and TUV approvals but lack UL certification listed in the LVR005S specification.

Q: Are there packaging considerations when selecting a substitute?

A: Yes. LVR005NS is supplied in bag format, 0ZRE0005FF1C in box format, and 0ZRE0005FF2C in cut tape format. Selection depends on procurement volume and assembly process requirements. Cut tape packaging (0ZRE0005FF2C) is suitable for automated pick-and-place assembly.

Q: Do all substitute parts meet RoHS3 compliance?

A: Yes. LVR005NS, 0ZRE0005FF1C, and 0ZRE0005FF2C are all ROHS3 compliant and REACH unaffected, matching the environmental compliance status of the LVR005S.

Q: What is the significance of the lead spacing tolerance difference (0.200" vs. 0.201")?

A: The 0.010" (0.25mm) difference is within standard manufacturing tolerance for through-hole components and does not affect PCB layout compatibility. Both spacing values accommodate standard 0.200" pitch PCB hole patterns.

Q: Which substitute is recommended for new designs?

A: For new designs, either LVR005NS (for Littelfuse product continuity) or 0ZRE0005FF1C/0ZRE0005FF2C (for extended environmental range and higher energy capacity) are suitable. Verify regulatory approval requirements specific to your application, particularly UL certification if mandated by end-use standards.