ERZ-E05B271CS Equivalent & Substitute Parts

Part Overview

The ERZ-E05B271CS is a 270V 1.2kA disc varistor manufactured by Panasonic Electronic Components, part of the ZNR® series. This transient voltage suppressor is designed for through-hole mounting applications requiring surge current protection in the 1.2kA range. The component is actively produced and maintains full inventory availability. Substitute parts are identified when electrical parameters, mechanical form factor, and compliance certifications remain within specification tolerances for the intended application.

Substiute Parts

ERZ-E05B271CS

Panasonic Electronic ComponentsIn Stock: 1094ERZ-E05B271CS Datasheet

Current PartRFQ

ERZ-E05A271

Panasonic Electronic ComponentsIn Stock: 11007ERZ-E05A271 Datasheet

Parametric EquivalentRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution of the ERZ-E05B271CS is determined by strict equivalence across the following electrical and mechanical parameters:

• Varistor voltage nominal and tolerance range (247–303V)
• Surge current rating (1.2 kA)
• Energy absorption capacity (18J)
• Maximum AC and DC voltage ratings (175V AC / 225V DC)
• Operating temperature range (−40 to +85°C)
• Capacitance specification (150 pF @ 1 kHz)
• Physical form factor (Disc 7mm through-hole package)
• Number of circuits (1)

The ERZ-E05A271 meets all specified parameters and is classified as a parametric equivalent. Both parts share the same base product number (ERZ-E05) and series designation (ZNR®), confirming design compatibility.

Parameter Comparison

Engineering Selection Recommendations

Both ERZ-E05B271CS and ERZ-E05A271 are active products manufactured by Panasonic Electronic Components with full RoHS3 compliance and REACH unaffected status. Selection between these parts may be based on inventory availability and lead time requirements. The ERZ-E05A271 maintains higher stock levels (10,901 pcs vs. 1,027 pcs), making it suitable for applications where supply chain continuity is a priority. Both parts are electrically and mechanically interchangeable within the specified parameter tolerances.

Frequently Asked Questions (FAQ)

Q: Can ERZ-E05A271 be used as a direct replacement for ERZ-E05B271CS?

A: Yes. Both parts are parametric equivalents with identical electrical specifications, surge current ratings, energy absorption capacity, operating temperature range, and physical form factor. They are mechanically and electrically interchangeable.

Q: What determines whether a varistor can substitute for the ERZ-E05B271CS?

A: Substitution requires exact matching of varistor voltage range (247–303V nominal 270V), surge current (1.2 kA), energy rating (18J), maximum AC/DC voltage limits, capacitance (150 pF @ 1 kHz), operating temperature (−40 to +85°C), and through-hole disc 7mm package configuration.

Q: Are there compliance differences between the two parts?

A: No. Both parts carry identical RoHS3 compliance and REACH unaffected status, ensuring regulatory equivalence for applications subject to these standards.

Q: Does the packaging designation affect substitution?

A: The packaging designation "Bulk" refers to supply format only and does not affect electrical or mechanical compatibility. Both parts use the same Disc 7mm through-hole package.

Q: What is the significance of the base product number ERZ-E05?

A: The base product number indicates both parts belong to the same product family within the ZNR® series, confirming design lineage and parameter compatibility.