ERZ-E10B331CS Varistor Equivalent & Substitute Parts Reference

Part Overview

The Panasonic ERZ-E10B331CS is a through-hole ZNR® series varistor designed for surge protection applications, providing a Varistor Voltage of 330 V (typical), maximum surge current handling of 4.5 kA, and an energy rating of 72J. It is packaged in a 11.5mm disc form factor and supports up to 210 V AC and 270 V DC. Finding alternative models becomes necessary for design flexibility, procurement risk mitigation, and supply chain continuity, especially when specific model numbers become constrained or inventory levels change. The listed part is active and in stock.

Substiute Parts

ERZ-E10B331CS

Panasonic Electronic ComponentsIn Stock: 808ERZ-E10B331CS Datasheet

Current PartRFQ

ERZ-E10A331

Panasonic Electronic ComponentsIn Stock: 1934ERZ-E10A331 Datasheet

Parametric EquivalentRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution for the ERZ-E10B331CS is based strictly on alignment of the following key electrical and mechanical parameters: Maximum AC Volts, Maximum DC Volts, Varistor Voltage range (Min, Typ, Max), Current - Surge, Energy rating, Number of Circuits, Capacitance at 1 kHz, Operating Temperature, Mounting Type, and Package/Case dimensions. Substitute parts meeting these parameters, as well as matching RoHS and REACH compliance status, are considered direct equivalents under professional engineering selection criteria.

Parameter Comparison

Engineering Selection Recommendations

Both the Panasonic ERZ-E10B331CS and ERZ-E10A331 varistors are active, ROHS3 compliant, REACH unaffected, and have a Moisture Sensitivity Level of 1 (Unlimited). Selection between these two parts can be made solely based on inventory availability and logistics, as their electrical and mechanical specifications, certifications, and compliance statuses are identical.

Frequently Asked Questions (FAQ)

Q1: What criteria are used to determine if a varistor can substitute for the ERZ-E10B331CS?
A1: Key parameters include Maximum AC/DC Voltage, Varistor Voltage range, Surge Current, Energy rating, Number of Circuits, Capacitance at specified frequency, Operating Temperature, Mounting Type, and Package/Case size, as well as compliance with RoHS and REACH directives.

Q2: Can the ERZ-E10A331 fully replace the ERZ-E10B331CS in an existing application?
A2: Yes, the Panasonic ERZ-E10A331 matches all key electrical, mechanical, and compliance parameters as the ERZ-E10B331CS.

Q3: Are there any differences in mounting or package dimensions between the ERZ-E10B331CS and its substitute?
A3: Both the ERZ-E10B331CS and ERZ-E10A331 use the Disc 11.5mm Through Hole package.

Q4: Does compliance status (RoHS/REACH) impact interchangeability of these varistors?
A4: Both models are ROHS3 compliant and REACH unaffected, so there are no restrictions based on compliance.

Q5: Is series or part family relevant for substitution?
A5: Both varistors are from the ZNR® series and share the base part number ERZ-E10, satisfying the family requirement for substitution within this group.