Littelfuse V68ZA2 68V 250A Disc Varistor - Equivalent & Substitute Parts

Part Overview

The Littelfuse V68ZA2 is a 68V 250A transient voltage suppressor varistor in a through-hole disc 7mm package, designed for overvoltage protection in electronic circuits. The main part number V68ZA2 carries an obsolete product status. Direct manufacturer equivalents and parametric alternatives are available from Littelfuse with active product status, along with a manufacturer-recommended cross-reference from Panasonic. Identifying suitable substitutes is essential for design continuity and procurement flexibility when the original part reaches end-of-life.

Substiute Parts

V68ZA2

LittelfuseIn Stock: 995V68ZA2 Datasheet

Current PartRFQ

V68ZA2P

Littelfuse Inc.In Stock: 3070V68ZA2P Datasheet

DirectRFQ

V68ZA2PX1347

Littelfuse Inc.In Stock: 759V68ZA2PX1347 Datasheet

Parametric EquivalentRFQ

V68ZA2PX2855

Littelfuse Inc.In Stock: 1153V68ZA2PX2855 Datasheet

Parametric EquivalentRFQ

V68ZC2P

Littelfuse Inc.In Stock: 756V68ZC2P Datasheet

Parametric EquivalentRFQ

V68ZC2PX2855

Littelfuse Inc.In Stock: 864V68ZC2PX2855 Datasheet

Parametric EquivalentRFQ

ERZ-V07D680

Panasonic Electronic ComponentsIn Stock: 2450ERZ-V07D680 Datasheet

MFR RecommendedRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitute parts for the V68ZA2 are classified into three categories based on substitution type:

Direct Manufacturer Equivalent (Packaging Variant): V68ZA2P differs from the main part only in packaging format (bulk vs. tape/reel). All electrical and mechanical parameters remain identical. This part carries active product status.

Parametric Equivalents (Internal Variant Codes): V68ZA2PX1347, V68ZA2PX2855, V68ZC2P, and V68ZC2PX2855 maintain identical electrical specifications and package dimensions. These parts represent internal manufacturing variants or tape/reel configurations within the Littelfuse ZA and ZC series. All carry active product status and full compliance certifications.

Manufacturer-Recommended Cross-Reference (Different Manufacturer): ERZ-V07D680 (Panasonic) is a parametric equivalent with the same varistor voltage (68V typical) and operating temperature range. However, it differs in surge current capacity (500A vs. 250A), energy rating (4.1J vs. 3J), and package size (Disc 8.5mm vs. Disc 7mm). This part is suitable only when higher surge current handling is acceptable and physical space permits the larger package.

Key Parameters Determining Substitution:

• Varistor voltage (typical and range)
• Surge current capacity
• Energy dissipation rating
• Package dimensions
• Operating temperature range
• Compliance certifications (RoHS, REACH)

Parameter Comparison

Engineering Selection Recommendations

For Direct Replacement (Identical Specifications and Package): V68ZA2P, V68ZA2PX1347, V68ZA2PX2855, V68ZC2P, and V68ZC2PX2855 are all suitable direct substitutes. All five parts maintain the same electrical performance, package dimensions, and compliance status as the obsolete V68ZA2. Selection among these five should be based on procurement availability and lead time. All carry active product status and ROHS3 compliance.

For Applications Requiring Higher Surge Current Capacity: ERZ-V07D680 (Panasonic) is the manufacturer-recommended alternative when circuit design permits a larger package footprint (8.5mm vs. 7mm disc) and higher surge current handling (500A vs. 250A) is beneficial. This part maintains the same varistor voltage and RoHS compliance but operates over a narrower temperature range (-40 to 85°C vs. -55 to 85°C). Use this part only when physical space and thermal requirements align with the design.

Compliance and Regulatory Considerations: All substitute parts listed carry ROHS3 compliance and REACH unaffected status, ensuring regulatory continuity for new designs and end-of-life replacements.

Frequently Asked Questions (FAQ)

Q: Can V68ZA2P be used as a direct replacement for V68ZA2? A: Yes. V68ZA2P is electrically and mechanically identical to V68ZA2, differing only in packaging format. It carries active product status and is suitable for direct substitution in all applications.

Q: What is the difference between V68ZA2PX1347, V68ZA2PX2855, and V68ZA2P? A: These parts are parametric equivalents with identical electrical specifications and package dimensions. The suffix codes (X1347, X2855) represent internal manufacturing or tape/reel configuration variants. All three are interchangeable from an engineering standpoint.

Q: Why does the Littelfuse ZC series (V68ZC2P, V68ZC2PX2855) appear as a substitute? A: The ZC series maintains all key electrical parameters and package dimensions of the ZA series. Both series are 68V 250A varistors in 7mm disc packages with identical operating ranges and compliance certifications.

Q: Can ERZ-V07D680 replace V68ZA2 in all applications? A: No. While ERZ-V07D680 maintains the same varistor voltage and RoHS compliance, it differs in three critical parameters: surge current (500A vs. 250A), energy rating (4.1J vs. 3J), and package size (8.5mm vs. 7mm). Use this part only when the circuit design accommodates the larger package and benefits from higher surge current capacity. The narrower operating temperature range (-40 to 85°C) may also be a limiting factor in extreme cold environments.

Q: Are all substitute parts ROHS3 compliant? A: Yes. All substitute parts listed carry ROHS3 compliance and REACH unaffected status.

Q: What inventory levels are available for each substitute? A: V68ZA2P: 2983 pcs; V68ZA2PX1347: 656 pcs; V68ZA2PX2855: 1054 pcs; V68ZC2P: 726 pcs; V68ZC2PX2855: 817 pcs; ERZ-V07D680: 2428 pcs.