Equivalent & Substitute Parts for V33ZC1 Varistor

Part Overview

The V33ZC1 is a 33V 250A disc varistor manufactured by Littelfuse Inc., designed for transient voltage suppression in through-hole applications. This component is classified as obsolete, making equivalent substitutes necessary for ongoing production and maintenance requirements. The V33ZC1P represents the active production equivalent within the same ZC series, maintaining identical electrical and mechanical specifications while offering improved availability.

Substiute Parts

V33ZC1

Littelfuse Inc.In Stock: 666V33ZC1 Datasheet

Current PartRFQ

V33ZC1P

LittelfuseIn Stock: 1088V33ZC1P Datasheet

DirectRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution eligibility for the V33ZC1 is determined by the following critical parameters:

• Varistor voltage rating (29.7 V minimum to 36.3 V maximum)
• Surge current capacity (250 A)
• Energy absorption capability (1.2 J)
• Mounting configuration (through-hole disc 7mm)
• Operating temperature range (-55°C to 85°C)
• Capacitance characteristics (1620 pF @ 1 MHz)

The V33ZC1P qualifies as a direct substitute based on matching all electrical specifications and mechanical form factor. Both components belong to the Littelfuse ZC series and maintain identical performance parameters across voltage, current, and thermal ratings.

Parameter Comparison

Engineering Selection Recommendations

The V33ZC1P is the appropriate substitute for the obsolete V33ZC1. Both components maintain identical electrical performance across all specified parameters and are manufactured by Littelfuse within the same ZC series. The V33ZC1P carries active product status, ensuring continued availability and supply chain reliability. Both components meet ROHS3 compliance requirements and carry MSL Level 1 moisture sensitivity ratings, indicating no special handling requirements during storage or assembly.

Selection of the V33ZC1P eliminates obsolescence risk while maintaining full electrical and mechanical compatibility with existing circuit designs and PCB layouts.

Frequently Asked Questions (FAQ)

Q: Can V33ZC1P be used as a direct replacement for V33ZC1?

A: Yes. The V33ZC1P is electrically and mechanically identical to the V33ZC1 across all specified parameters, including varistor voltage rating, surge current capacity, energy absorption, and package dimensions. The primary difference is product status: V33ZC1P is active production while V33ZC1 is obsolete.

Q: What are the key parameters that determine substitution eligibility?

A: Substitution is determined by matching varistor voltage rating (33V typical), surge current capacity (250A), energy absorption (1.2J), mounting type (through-hole), package form factor (disc 7mm), and operating temperature range (-55°C to 85°C).

Q: Are there packaging differences between V33ZC1 and V33ZC1P?

A: Both components use identical disc 7mm through-hole packaging. The V33ZC1P is supplied in bulk packaging, while the V33ZC1 packaging specification was not provided. This does not affect electrical or mechanical compatibility.

Q: Do both parts meet the same compliance standards?

A: Yes. Both V33ZC1 and V33ZC1P are ROHS3 compliant and carry MSL Level 1 ratings. Both are classified under ECCN EAR99 and HTSUS 8533.40.4000.

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

A: Both components operate across -55°C to 85°C ambient temperature range, suitable for industrial and commercial applications.