V140SM7 Equivalent & Substitute Parts

Part Overview

The V140SM7 is a 220 V varistor manufactured by Littelfuse Inc., designed for transient voltage suppression in surface mount applications. This component operates within a maximum AC voltage of 140 V and maximum DC voltage of 180 V, with a surge current rating of 1.2 kA and energy absorption capacity of 12 J. The part is actively produced and RoHS3 compliant, making it suitable for modern electronic equipment requiring overvoltage protection.

Equivalent and substitute parts become necessary when the primary component experiences supply constraints, extended lead times, or when design flexibility allows for alternative manufacturers meeting identical electrical and mechanical specifications.

Substiute Parts

V140SM7

Littelfuse Inc.In Stock: 1151V140SM7 Datasheet

Current PartRFQ

MOVS4032V140

Eaton - Electronics DivisionIn Stock: 4350MOVS4032V140 Datasheet

MFR RecommendedRFQ

PV140K3225R2

Bourns Inc.In Stock: 1020PV140K3225R2 Datasheet

MFR RecommendedRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution eligibility for the V140SM7 is determined by strict alignment of the following electrical and mechanical parameters:

• Maximum AC Volts: 140 V
• Maximum DC Volts: 180 V
• Varistor Voltage (Typical): 220 V
• Number of Circuits: 1
• Operating Temperature Range: -40°C to 85°C
• Mounting Type: Surface Mount, MLCV
• RoHS Compliance: ROHS3 or equivalent

Two substitute parts meet these core criteria with variations in surge current capacity and energy absorption. The MOVS4032V140 from Eaton Electronics Division maintains identical electrical specifications with a 2-SMD No Lead package configuration. The PV140K3225R2 from Bourns Inc. provides equivalent voltage and temperature performance but with reduced surge current (400 A versus 1.2 kA) and lower energy absorption (7.5 J versus 12 J).

Parameter Comparison

Engineering Selection Recommendations

The MOVS4032V140 from Eaton Electronics Division is the primary substitute for the V140SM7. Both components maintain identical electrical specifications across all voltage and current parameters, operate within the same temperature range, and carry equivalent RoHS compliance status. The primary difference is the package configuration: MOVS4032V140 uses a 2-SMD No Lead package, while V140SM7 uses a 2-SMD J-Lead package. This distinction affects PCB layout and soldering process requirements but does not impact electrical performance.

The PV140K3225R2 from Bourns Inc. is a secondary substitute suitable only for applications where surge current requirements do not exceed 400 A and energy absorption below 7.5 J is acceptable. This component maintains voltage specifications and temperature range alignment but represents a reduced-capability alternative. Both substitute parts are actively produced and carry appropriate compliance certifications for industrial and commercial applications.

Frequently Asked Questions (FAQ)

Q: Can MOVS4032V140 directly replace V140SM7 on existing PCBs?

A: Electrical substitution is direct. However, the package difference (No Lead versus J-Lead) requires PCB layout verification. The No Lead configuration may require different soldering parameters and pad design compared to the J-Lead variant.

Q: What are the limitations of using PV140K3225R2 as a substitute?

A: The PV140K3225R2 has reduced surge current capacity (400 A versus 1.2 kA) and lower energy absorption (7.5 J versus 12 J). Use this substitute only in applications where these reduced ratings meet circuit protection requirements.

Q: Are all three parts RoHS compliant?

A: Yes. V140SM7 and PV140K3225R2 are ROHS3 compliant. MOVS4032V140 is RoHS compliant. All three meet environmental compliance requirements for modern electronics manufacturing.

Q: Do package differences affect electrical performance?

A: No. The J-Lead and No Lead package configurations do not alter electrical characteristics. Differences are limited to PCB assembly process compatibility and mechanical mounting considerations.

Q: What is the moisture sensitivity level for all three parts?

A: All three components carry MSL 1 (Unlimited), indicating no moisture sensitivity restrictions during storage or handling.