V140LA2 Equivalent & Substitute Parts

Part Overview

The V140LA2 is a 220 V, 1.2 kA varistor manufactured by Littelfuse Inc., designed for transient voltage suppression in through-hole disc configurations. This component is classified as obsolete, which necessitates identification of equivalent substitute parts for ongoing design support and procurement continuity. The V140LA2P serves as the direct active equivalent, offering identical electrical performance with improved availability.

Substiute Parts

V140LA2

Littelfuse Inc.In Stock: 1135V140LA2 Datasheet

Current PartRFQ

V140LA2P

Littelfuse Inc.In Stock: 109349V140LA2P Datasheet

DirectRFQ

Key Parameters

Substitute Part Grouping Explanation

The V140LA2P is classified as a direct manufacturer equivalent based on the following substitution criteria:

• Identical maximum AC voltage rating: 140 V
• Identical maximum DC voltage rating: 180 V
• Identical varistor voltage specification: 220 V typical (198 V – 242 V range)
• Identical surge current capacity: 1.2 kA
• Identical energy absorption: 12 J
• Identical circuit count: 1
• Identical operating temperature range: -55°C to 85°C
• Identical mounting type: Through Hole
• Identical package form factor: Disc 7mm
• Identical RoHS compliance: ROHS3 Compliant

The primary distinction is product status: V140LA2 is obsolete, while V140LA2P is active production, with significantly higher inventory availability (109,285 pcs vs. 1,077 pcs).

Parameter Comparison

Engineering Selection Recommendations

The V140LA2P is the direct replacement for the obsolete V140LA2. Both components meet ROHS3 compliance requirements and share identical electrical and mechanical specifications across all critical parameters. The V140LA2P is recommended for new designs and procurement due to its active product status and substantially higher inventory availability. The minor capacitance difference (160 pF vs. 180 pF at 1 MHz) does not affect substitution eligibility, as both values remain within acceptable operating margins for transient voltage suppression applications.

Frequently Asked Questions (FAQ)

Q: Can V140LA2P be used as a direct replacement for V140LA2?

A: Yes. The V140LA2P is electrically and mechanically identical to the V140LA2 across all critical parameters: voltage ratings, surge current capacity, energy absorption, operating temperature range, and package form factor. The only difference is product status (active vs. obsolete).

Q: What is the significance of the capacitance difference between V140LA2 and V140LA2P?

A: The V140LA2 has 160 pF capacitance at 1 MHz, while the V140LA2P has 180 pF at 1 MHz. This 20 pF difference does not affect substitution suitability for transient voltage suppression applications and remains within acceptable operating parameters.

Q: Are both parts RoHS compliant?

A: Yes. Both V140LA2 and V140LA2P are ROHS3 compliant.

Q: What is the packaging difference between these parts?

A: V140LA2 is supplied in standard packaging, while V140LA2P is supplied in bulk packaging. Both use identical through-hole disc 7mm form factors and are mechanically interchangeable.

Q: Why is V140LA2 listed as obsolete?

A: V140LA2 has been discontinued by Littelfuse Inc. The V140LA2P is the active production equivalent and should be used for all new procurement and design activities.