V18ZC2P Equivalent & Substitute Parts

Part Overview

The V18ZC2P is a Littelfuse transient voltage suppressor (TVS) varistor designed for surge protection applications. This 18V, 500A disc varistor operates through a single circuit in a 10mm through-hole package. The component is currently active in production with 867 units in stock. Finding equivalent substitute parts is necessary to ensure supply chain flexibility, manage inventory across multiple sourcing channels, and maintain design continuity when primary stock becomes unavailable.

Substiute Parts

V18ZC2P

LittelfuseIn Stock: 887V18ZC2P Datasheet

Current PartRFQ

V18ZA2P

Littelfuse Inc.In Stock: 5181V18ZA2P Datasheet

Parametric EquivalentRFQ

Key Parameters

Substitute Part Grouping Explanation

The V18ZC2P has one parametric equivalent: the V18ZA2P. Substitution eligibility is determined by the following critical parameters:

• Varistor voltage rating (Min/Typ/Max): 16.2 V / 18 V / 19.8 V
• Surge current capacity: 500 A
• Energy dissipation: 1.5 J
• Package form factor: Disc 10mm
• Mounting configuration: Through Hole
• Maximum AC/DC voltage ratings: 10 V AC / 14 V DC
• Capacitance at 1 MHz: 5300 pF
• Temperature operating range: -55°C ~ 85°C

The V18ZA2P matches all electrical and mechanical parameters identically, differing only in the internal series designation (ZA vs. ZC). Both components are manufactured by Littelfuse and maintain identical performance specifications for circuit protection applications.

Parameter Comparison

Engineering Selection Recommendations

Both the V18ZC2P and V18ZA2P are active production components with full regulatory compliance. The V18ZC2P carries 867 units in current inventory, while the V18ZA2P maintains higher stock availability at 5140 units. Both components meet ROHS3 compliance requirements and carry REACH Unaffected status, making them suitable for regulated applications. Selection between these parts should be based on inventory availability and supply chain lead times, as electrical and mechanical performance are identical.

Frequently Asked Questions (FAQ)

Q: Can the V18ZA2P be used as a direct replacement for the V18ZC2P?

A: Yes. The V18ZA2P is a parametric equivalent with identical electrical ratings, surge current capacity, energy dissipation, and package configuration. The only difference is the internal series designation (ZA vs. ZC).

Q: Are there any differences in the 10mm disc package between these parts?

A: No. Both components use the same Disc 10mm through-hole package form factor and are mechanically interchangeable in PCB layouts.

Q: Do both parts meet the same compliance standards?

A: Yes. Both the V18ZC2P and V18ZA2P are ROHS3 compliant and REACH Unaffected, meeting identical regulatory requirements.

Q: What is the operating temperature range for both parts?

A: Both components operate across the temperature range of -55°C to 85°C (TA).

Q: Are there any differences in surge current handling?

A: No. Both parts are rated for 500 A surge current and 1.5 J energy dissipation.

Q: Which part should be selected based on availability?

A: Selection should be based on current inventory levels and supply chain requirements. The V18ZA2P currently has higher stock availability (5140 units) compared to the V18ZC2P (867 units).