LVR008K Equivalent & Substitute Parts

Part Overview

The LVR008K is a Polymeric PTC Resettable Fuse manufactured by Littelfuse Inc. as part of the PolySwitch® LVR series. This component is rated for 240V (265V internal) with an 80 mA hold current and is designed for through-hole radial mounting in disc configuration. The LVR008K is currently listed as obsolete, making identification of active equivalent parts essential for ongoing design support and procurement.

Substiute Parts

LVR008K

Littelfuse Inc.In Stock: 833LVR008K Datasheet

Current PartRFQ

LVR008NK

Littelfuse Inc.In Stock: 1176LVR008NK Datasheet

DirectRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution of the LVR008K is determined by electrical and mechanical parameter equivalence within the PolySwitch® LVR series. The critical substitution criteria are:

• Voltage rating: 240V (265V internal) maximum
• Current hold specification: 80 mA
• Current trip specification: 190 mA
• Maximum current: 1.2 A
• Time to trip: 10 s
• Initial resistance: 7.4 Ohms minimum
• Post-trip resistance: 26 Ohms maximum
• Operating temperature range: -20°C ~ 85°C
• Mounting configuration: Through hole radial disc
• Lead spacing: 0.200" (5.08mm)
• Regulatory compliance: CQC, CSA, TUV, UL certifications

The LVR008NK qualifies as a direct substitute based on identical electrical specifications and regulatory approvals. Physical dimensions vary slightly between the two parts; however, both maintain the same lead spacing and through-hole mounting compatibility.

Parameter Comparison

Engineering Selection Recommendations

The LVR008NK is the primary substitute for the obsolete LVR008K. Both components share identical electrical specifications, regulatory certifications (CQC, CSA, TUV, UL), and RoHS3 compliance status. The LVR008NK maintains active product status with Littelfuse Inc., ensuring ongoing availability and supply chain continuity.

Physical dimensions differ between the two parts: the LVR008K measures 0.327" diameter × 0.150" thickness (8.30mm × 3.80mm), while the LVR008NK measures 0.283" diameter × 0.181" thickness (7.20mm × 4.60mm). Both components maintain identical lead spacing of 0.200" (5.08mm), supporting direct PCB footprint compatibility in through-hole applications.

Selection of the LVR008NK is appropriate for all applications previously specified for the LVR008K, provided that physical envelope constraints within the end-use assembly accommodate the dimensional variation.

Frequently Asked Questions (FAQ)

Q: Can the LVR008NK directly replace the LVR008K in existing designs?

A: Yes. The LVR008NK provides electrical equivalence with identical voltage, current, resistance, and thermal specifications. Lead spacing remains constant at 0.200" (5.08mm), supporting direct PCB mounting compatibility. Physical dimensions vary; confirm that the smaller disc diameter (0.283" vs. 0.327") and increased thickness (0.181" vs. 0.150") fit within the mechanical constraints of your assembly.

Q: What is the significance of the product status difference between LVR008K and LVR008NK?

A: The LVR008K is obsolete and no longer manufactured. The LVR008NK is an active product with ongoing production and supply availability. For new designs or long-term procurement, the LVR008NK is the appropriate selection.

Q: Are regulatory certifications identical between these parts?

A: Yes. Both the LVR008K and LVR008NK carry CQC, CSA, TUV, and UL approvals. Both are ROHS3 compliant and REACH unaffected, meeting equivalent regulatory requirements.

Q: What packaging differences exist between these parts?

A: The LVR008K was supplied without specified packaging designation. The LVR008NK is supplied in bag packaging. This distinction affects procurement and handling but does not alter electrical or functional performance.

Q: Are there secondary substitutes available beyond the LVR008NK?

A: The LVR008NK documentation indicates further substitutes (LVR008NS-1, LVR008NS). Verification of electrical and mechanical equivalence with these parts requires comparison against the specified parameters for the LVR008K.