Littelfuse V22ZC1P Transient Voltage Suppressor - Equivalent & Substitute Parts

Part Overview

The Littelfuse V22ZC1P is a 22V disc varistor designed for transient voltage suppression in through-hole applications. This component provides surge current protection rated at 250A with an energy absorption capacity of 0.9J. The part is currently in active production status with 869 units available in inventory. Alternative equivalent parts may be required due to supply constraints, design revisions, or procurement preferences while maintaining identical electrical and mechanical performance specifications.

Substiute Parts

V22ZC1P

Littelfuse Inc.In Stock: 909V22ZC1P Datasheet

Current PartRFQ

V22ZA1P

LittelfuseIn Stock: 6005V22ZA1P Datasheet

Parametric EquivalentRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution of the V22ZC1P is based on strict equivalence across all critical electrical and mechanical parameters. The substitute part V22ZA1P qualifies as a parametric equivalent because it maintains identical specifications across the following key criteria:

• Varistor voltage rating: 22V nominal with identical tolerance range (19.8 - 24.2V)
• Surge current capacity: 250A
• Energy absorption: 0.9J
• AC and DC voltage limits: 14V AC / 18V DC
• Capacitance: 2375 pF @ 1 MHz
• Operating temperature range: -55°C to 85°C
• Package configuration: Disc 7mm through-hole mounting
• Compliance certifications: ROHS3, REACH Unaffected, EAR99

The only distinction between these parts is the internal series designation (ZC versus ZA), which reflects manufacturing series classification without affecting functional performance or interchangeability.

Parameter Comparison

Engineering Selection Recommendations

Both the V22ZC1P and V22ZA1P are active production components from Littelfuse with full ROHS3 compliance and REACH unaffected status. Selection between these parts should be based on the following factors:

V22ZC1P (Primary Part): Use when the ZC series designation is specified in design documentation or when inventory availability of 869 units meets project lead time requirements.

V22ZA1P (Substitute): Use as an alternative when supply of the V22ZC1P is constrained. The substitute offers significantly higher inventory availability (5981 units) while maintaining complete electrical and mechanical equivalence. Both parts carry identical compliance certifications and operational specifications, ensuring direct interchangeability in circuit applications.

No design modifications, board layout changes, or circuit re-qualification are required when substituting between these parts.

Frequently Asked Questions (FAQ)

Q: Are the V22ZC1P and V22ZA1P electrically interchangeable?

A: Yes. Both parts have identical varistor voltage ratings (22V nominal), surge current capacity (250A), energy absorption (0.9J), and all other electrical parameters. They are direct functional equivalents.

Q: Can I use V22ZA1P as a drop-in replacement for V22ZC1P on existing PCBs?

A: Yes. Both parts use identical through-hole Disc 7mm packaging with the same mechanical footprint and pin configuration. No PCB modifications are required.

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

A: The series designation reflects Littelfuse's internal manufacturing classification. It does not affect electrical performance, mechanical compatibility, or compliance status. Both series meet identical specifications.

Q: Do both parts have the same compliance certifications?

A: Yes. Both V22ZC1P and V22ZA1P are ROHS3 compliant, REACH unaffected, and classified as EAR99 for export purposes. Moisture sensitivity level is 1 (unlimited) for both parts.

Q: Which part should I select if both are available?

A: Selection can be based on inventory availability and procurement lead times. The V22ZA1P currently has higher stock (5981 units versus 869 units), which may provide supply chain advantages. Both parts are functionally identical and equally suitable for new designs.

Q: Are there any temperature or voltage derating considerations when using the substitute?

A: No. Both parts operate across the identical temperature range (-55°C to 85°C) and have identical maximum AC (14V) and DC (18V) voltage ratings. No derating adjustments are necessary when substituting between these parts.