B72210S0321K501 Equivalent & Substitute Parts

Part Overview

The B72210S0321K501 is a 510 V, 2.5 kA disc varistor manufactured by EPCOS - TDK Electronics, designed for transient voltage suppression in through-hole applications. This component operates across a temperature range of -40°C to 105°C and is RoHS3 compliant. The part is currently active in production with 952 units in stock. Substitute parts are identified when identical electrical and mechanical specifications are maintained across the same product series, enabling seamless integration into existing designs without circuit modification.

Substiute Parts

B72210S0321K501

EPCOS - TDK ElectronicsIn Stock: 1031B72210S0321K501 Datasheet

Current PartRFQ

B72210S0321K101

EPCOS - TDK ElectronicsIn Stock: 8400B72210S0321K101 Datasheet

Parametric EquivalentRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution eligibility for the B72210S0321K501 is determined by strict equivalence across all critical electrical and mechanical parameters. The substitute part B72210S0321K101 qualifies as a parametric equivalent because it maintains identical specifications in the following key areas:

• Varistor voltage range (459 V minimum to 561 V maximum, 510 V typical)
• Surge current capacity (2.5 kA)
• Maximum AC and DC voltage ratings (320 V AC, 420 V DC)
• Energy absorption (50 J)
• Capacitance at 1 kHz (185 pF)
• Operating temperature range (-40°C to 105°C)
• Through-hole mounting configuration with 10mm disc package
• Single circuit configuration
• RoHS3 compliance and REACH unaffected status

Both parts belong to the B72210S base product series and share identical electrical performance characteristics, making them interchangeable at the component level.

Parameter Comparison

Engineering Selection Recommendations

Both the B72210S0321K501 and B72210S0321K101 are active production components manufactured by EPCOS - TDK Electronics with full RoHS3 compliance and REACH unaffected status. Selection between these parts may be based on inventory availability: the B72210S0321K501 has 952 units in stock, while the B72210S0321K101 has 8309 units available. From an engineering perspective, either part satisfies identical circuit requirements and regulatory compliance obligations. The choice between them does not affect electrical performance, thermal characteristics, or mechanical fit within the application.

Frequently Asked Questions (FAQ)

Q: Can B72210S0321K101 be used as a direct replacement for B72210S0321K501?

A: Yes. Both parts are parametric equivalents with identical electrical specifications, surge current ratings, voltage tolerances, and through-hole disc package dimensions. No circuit modifications are required.

Q: Are there any differences in compliance or certifications between these parts?

A: No. Both parts carry identical RoHS3 compliance and REACH unaffected status, meeting the same regulatory requirements.

Q: What determines whether a varistor can substitute for another in this series?

A: Substitution requires matching varistor voltage range (459-561 V), surge current capacity (2.5 kA), maximum AC/DC voltage ratings, energy absorption (50 J), capacitance (185 pF @ 1 kHz), operating temperature range (-40°C to 105°C), and physical package (through-hole, 10mm disc).

Q: Does the packaging format differ between these parts?

A: No. Both parts are supplied in bulk packaging with identical through-hole disc 10mm case dimensions.

Q: Are there any temperature or environmental limitations that differ between these substitutes?

A: No. Both parts operate identically across the -40°C to 105°C temperature range with no differences in environmental performance or derating characteristics.