Littelfuse V18ZC05P Varistor - Equivalent & Substitute Parts

Part Overview

The Littelfuse V18ZC05P is an 18V, 100A transient voltage suppressor varistor in a through-hole disc 5mm package. This component is designed for transient voltage protection in electronic circuits and is currently in active production status. Alternative equivalent parts may be required due to inventory constraints, supply chain considerations, or specific application requirements while maintaining identical electrical and mechanical performance.

Substiute Parts

V18ZC05P

Littelfuse Inc.In Stock: 1029V18ZC05P Datasheet

Current PartRFQ

V18ZA05P

Littelfuse Inc.In Stock: 3549V18ZA05P Datasheet

Parametric EquivalentRFQ

Key Parameters

Substitute Part Grouping Explanation

The V18ZC05P varistor has one parametric equivalent substitute: the V18ZA05P. Substitution eligibility is determined by strict equivalence across the following critical parameters:

• Varistor voltage rating (16.2 V minimum, 18 V typical, 19.8 V maximum)
• Surge current capacity (100 A)
• Maximum AC and DC voltage ratings (10 V AC, 14 V DC)
• Energy absorption capability (0.17 J)
• Capacitance characteristics (1400 pF @ 1 MHz)
• Operating temperature range (-55°C to +85°C)
• Through-hole mounting configuration with 5mm disc package
• Single-circuit design
• RoHS3 compliance and REACH unaffected status

Both parts belong to the Littelfuse varistor product line and maintain identical electrical performance specifications and mechanical compatibility.

Parameter Comparison

Engineering Selection Recommendations

Both the V18ZC05P and V18ZA05P are active production components manufactured by Littelfuse Inc. and carry identical ROHS3 compliance and REACH unaffected certifications. Selection between these parts may be based on inventory availability, supply lead times, or procurement preferences, as they are fully interchangeable from an electrical and mechanical standpoint. The V18ZA05P (ZA series) represents the parametric equivalent to the V18ZC05P (ZC series), with no performance differentiation across any specified parameter.

Frequently Asked Questions (FAQ)

Q: Can the V18ZA05P be used as a direct replacement for the V18ZC05P?

A: Yes. The V18ZA05P is a parametric equivalent with identical electrical ratings, surge current capacity, voltage range, energy absorption, capacitance, operating temperature range, and physical package specifications. Direct substitution is supported without circuit modification.

Q: What is the difference between the ZC and ZA series designations?

A: The series designation (ZC vs. ZA) indicates different product lines within the Littelfuse varistor portfolio. However, for the 18V, 100A disc 5mm configuration, both series maintain identical electrical and mechanical specifications as provided in the datasheet parameters.

Q: Are both parts RoHS and REACH compliant?

A: Yes. Both the V18ZC05P and V18ZA05P are ROHS3 compliant and REACH unaffected, meeting current environmental and regulatory requirements.

Q: What is the moisture sensitivity level for these components?

A: Both parts carry a Moisture Sensitivity Level (MSL) of 1, indicating unlimited shelf life without moisture control requirements.

Q: Can these varistors be used in AC and DC applications?

A: Yes. Both parts are rated for maximum AC voltage of 10V and maximum DC voltage of 14V, supporting applications in both AC and DC circuits within these voltage limits.

Q: What is the through-hole package configuration?

A: Both parts feature a disc 5mm through-hole package, designed for direct insertion into PCB mounting holes with standard lead spacing compatible with 5mm disc varistor footprints.