V120MA2S Equivalent & Substitute Parts

Part Overview

The V120MA2S is a 120 V metal-oxide varistor manufactured by Littelfuse Inc., designed for transient voltage suppression in through-hole applications. This component operates across a wide temperature range (-55°C to 85°C) and is RoHS3 compliant. The part is currently in active production status with substantial inventory availability. Substitute parts may be required due to supply chain constraints, manufacturing discontinuation of alternative sources, or specific application requirements related to compliance certifications.

Substiute Parts

V120MA2S

Littelfuse Inc.In Stock: 816V120MA2S Datasheet

Current PartRFQ

V120MA2B

Harris CorporationIn Stock: 1896V120MA2B Datasheet

Parametric EquivalentRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution eligibility for the V120MA2S is determined by strict equivalence across the following critical parameters:

• Varistor voltage rating (108 V – 132 V range)
• Maximum AC and DC voltage specifications (75 V AC / 101 V DC)
• Surge current capacity (100 A)
• Package and mounting configuration (SOD-83A Axial, Through Hole)
• Operating temperature range (-55°C to 85°C)
• Number of circuits (1 circuit)
• Capacitance at 1 MHz (40 pF)

The V120MA2B qualifies as a parametric equivalent based on these criteria. However, compliance status differences must be evaluated for specific applications.

Parameter Comparison

Engineering Selection Recommendations

The V120MA2S is the preferred selection for new designs and applications requiring RoHS3 compliance. This part maintains active production status with confirmed inventory availability.

The V120MA2B is electrically equivalent across all critical varistor parameters and maintains identical mechanical compatibility. However, this part is obsolete and does not meet RoHS3 compliance requirements. Selection of the V120MA2B is appropriate only for legacy system maintenance or applications where RoHS compliance is not mandated. The slightly higher energy absorption rating (0.5 J versus 0.46 J) does not alter functional equivalence within the specified parameter tolerances.

Frequently Asked Questions (FAQ)

Q: Can V120MA2B be used as a direct replacement for V120MA2S in new designs?

A: The V120MA2B is electrically and mechanically equivalent. However, it is obsolete and RoHS non-compliant. For new designs, the V120MA2S is the appropriate selection.

Q: What is the significance of the energy absorption difference (0.46 J vs. 0.5 J)?

A: Both values fall within acceptable transient suppression performance for this voltage class. The difference does not affect substitution eligibility for applications within the specified electrical parameters.

Q: Are there any package or mounting differences between these parts?

A: No. Both parts use SOD-83A Axial packaging with through-hole mounting. They are mechanically interchangeable on PCBs designed for this footprint.

Q: Why is the V120MA2B listed as obsolete?

A: The V120MA2B is no longer in active production by Harris Corporation. The V120MA2S from Littelfuse Inc. represents the current active equivalent in this voltage and current class.

Q: Does RoHS compliance affect electrical performance?

A: RoHS compliance relates to material composition and environmental regulations, not electrical performance. Both parts meet the specified electrical parameters. RoHS compliance is a regulatory requirement for applications subject to these standards.

Q: What is the ECCN classification for these parts?

A: Both parts are classified as EAR99, indicating they are not subject to export control restrictions.