V68ZA3 Equivalent & Substitute Parts

Part Overview

The V68ZA3 is a 68 V, 500 A Transient Voltage Suppressor (TVS) varistor manufactured by Littelfuse Inc., designed for through-hole disc mounting in 10mm package format. This component is classified as obsolete, which necessitates identification of active equivalent alternatives that maintain identical electrical and mechanical specifications for direct circuit substitution.

Substiute Parts

V68ZA3

Littelfuse Inc.In Stock: 1015V68ZA3 Datasheet

Current PartRFQ

V68ZA3P

Littelfuse Inc.In Stock: 10229V68ZA3P Datasheet

DirectRFQ

V68ZA3PX2855

LittelfuseIn Stock: 1053V68ZA3PX2855 Datasheet

Parametric EquivalentRFQ

V68ZC3P

Littelfuse Inc.In Stock: 1131V68ZC3P Datasheet

Parametric EquivalentRFQ

V68ZC3PX2855

Littelfuse Inc.In Stock: 1206V68ZC3PX2855 Datasheet

Parametric EquivalentRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution of the obsolete V68ZA3 is determined by strict equivalence across all electrical and mechanical parameters. The substitute parts are grouped into two categories based on series designation:

Direct Series Match (ZA Series):

• V68ZA3P
• V68ZA3PX2855

Parametric Equivalent (ZC Series):

• V68ZC3P
• V68ZC3PX2855

All substitute parts maintain identical specifications for varistor voltage (61.2 V min, 68 V typ, 74.8 V max), surge current (500 A), energy rating (6.5 J), capacitance (1850 pF @ 1 MHz), operating temperature range (-55°C to 85°C), and physical package (Disc 10mm through-hole). The primary distinction between substitutes is product status (all active versus obsolete) and packaging format (bulk versus tape/reel variants indicated by the X2855 suffix).

Parameter Comparison

Engineering Selection Recommendations

For replacement of the obsolete V68ZA3, selection among active equivalents is based on product status and compliance certifications:

Primary Selection: V68ZA3P or V68ZA3PX2855 are recommended as first-choice substitutes, maintaining identical ZA series designation with active product status and ROHS3 compliance. V68ZA3P is suitable for bulk procurement; V68ZA3PX2855 accommodates tape/reel packaging requirements.

Alternative Selection: V68ZC3P or V68ZC3PX2855 provide parametric equivalence across all electrical and mechanical specifications while offering active product status and ROHS3 compliance. These ZC series variants are functionally interchangeable for circuit applications requiring 68 V, 500 A varistor performance.

All substitute parts carry REACH Unaffected status and identical ECCN (EAR99) and HTSUS (8533.40.4000) classifications, confirming regulatory and compliance alignment with the original component.

Frequently Asked Questions (FAQ)

Q: Can V68ZC3P or V68ZC3PX2855 be used as direct replacements for V68ZA3?

A: Yes. The ZC series variants maintain identical electrical parameters (68 V typical varistor voltage, 500 A surge current, 6.5 J energy) and mechanical specifications (Disc 10mm through-hole package). Series designation change does not affect circuit compatibility.

Q: What is the difference between V68ZA3P and V68ZA3PX2855?

A: Both parts are electrically and mechanically identical. The X2855 suffix indicates tape/reel packaging format, while the standard V68ZA3P designation indicates bulk packaging. Selection depends on assembly process requirements.

Q: Are all substitute parts ROHS3 compliant?

A: Yes. All substitute parts (V68ZA3P, V68ZA3PX2855, V68ZC3P, V68ZC3PX2855) carry ROHS3 Compliant status, matching the original V68ZA3 specification.

Q: What is the operating temperature range for these varistors?

A: All parts, including the original V68ZA3 and all substitutes, operate across -55°C to 85°C ambient temperature range.

Q: Can packaging format (bulk versus X2855) affect electrical performance?

A: No. Packaging format differences relate only to delivery and handling methods. Electrical and mechanical performance remains identical across all packaging variants.