LVR100S Polymeric PTC Resettable Fuse - Equivalent & Substitute Parts

Part Overview

The LVR100S is a Polymeric PTC Resettable Fuse manufactured by Littelfuse, rated for 240V (265V internal) with a 1A hold current. This component is classified as Obsolete, which necessitates identification of active equivalent parts for ongoing procurement and system maintenance. The LVR100S operates as a thermal protection device in Through Hole Radial configuration, suitable for applications requiring automatic fault current interruption and self-recovery capability.

Substiute Parts

LVR100S

LittelfuseIn Stock: 1034LVR100S Datasheet

Current PartRFQ

LVR100S-240

Littelfuse Inc.In Stock: 1433LVR100S-240 Datasheet

Parametric EquivalentRFQ

Key Parameters

Substitute Part Grouping Explanation

The LVR100S-240 qualifies as a parametric equivalent based on identical electrical and mechanical specifications. Substitution is valid when the following criteria are met:

• Voltage rating: 240V (265V internal) maximum
• Current hold specification: 1A (Ih) maximum
• Current trip specification: 2A (It)
• Maximum current capacity: 10A
• Trip time: 21 seconds
• Initial resistance: 218 mOhms minimum
• Post-trip resistance: 580 mOhms maximum
• Operating temperature range: -20°C to 85°C
• Mounting configuration: Through Hole Radial, Disc package
• Physical dimensions: 0.736" diameter x 0.201" thickness (18.70mm x 5.10mm)
• Lead spacing: 0.400" (10.15mm)
• Regulatory compliance: CQC, CSA, TUV, UL certifications
• Environmental compliance: ROHS3 Compliant

Parameter Comparison

Engineering Selection Recommendations

The LVR100S-240 is the direct active equivalent for the obsolete LVR100S. Both parts maintain identical electrical performance characteristics, mechanical dimensions, and regulatory certifications. The LVR100S-240 is currently in active production status with confirmed inventory availability, making it the appropriate selection for new designs and replacement procurement.

Both parts carry equivalent regulatory approvals (CQC, CSA, TUV, UL) and maintain ROHS3 compliance, ensuring compatibility with current environmental and safety standards. The transition from LVR100S to LVR100S-240 presents no functional or compliance constraints for circuit-level integration.

Frequently Asked Questions (FAQ)

Q: Can LVR100S-240 directly replace LVR100S in existing designs?

A: Yes. The LVR100S-240 is electrically and mechanically identical to the LVR100S. All electrical parameters, physical dimensions, lead spacing, and regulatory certifications are equivalent. Direct substitution is valid without circuit modification.

Q: What is the difference between LVR100S and LVR100S-240?

A: The primary difference is product status and packaging. LVR100S is classified as Obsolete, while LVR100S-240 is Active. The LVR100S-240 is supplied in Bulk packaging. All electrical and mechanical specifications are identical.

Q: Are there any compliance or certification differences?

A: No. Both parts carry identical regulatory approvals (CQC, CSA, TUV, UL) and maintain ROHS3 compliance. No additional qualification or testing is required for substitution.

Q: What are the critical parameters for substitution compatibility?

A: Substitution compatibility is determined by: voltage rating (240V/265V internal), current hold (1A), current trip (2A), operating temperature range (-20°C to 85°C), mounting type (Through Hole Radial), physical dimensions (0.736" diameter x 0.201" thickness), and lead spacing (0.400"). All parameters must match exactly.

Q: Is the LVR100S-240 available in the same packaging as the original LVR100S?

A: The LVR100S-240 is supplied in Bulk packaging. Both parts use identical Through Hole Radial, Disc package configuration with matching physical dimensions and lead spacing.