Equivalent & Substitute Parts for V39MA2S

Part Overview

The V39MA2S is a 39V 40A Varistor manufactured by Littelfuse Inc., classified as a Transient Voltage Suppressor (TVS) device. This through-hole component in SOD-83A axial packaging is designed for transient voltage protection applications. The part maintains active product status with full ROHS3 compliance and REACH unaffected certification. Substitute parts are identified to provide design flexibility, inventory alternatives, and supply chain continuity while maintaining equivalent electrical and mechanical performance.

Substiute Parts

V39MA2S

Littelfuse Inc.In Stock: 820V39MA2S Datasheet

Current PartRFQ

V39MA2B

Littelfuse Inc.In Stock: 6693V39MA2B Datasheet

Parametric EquivalentRFQ

Key Parameters

Substitute Part Grouping Explanation

The V39MA2B qualifies as a parametric equivalent to the V39MA2S based on the following substitution criteria:

Electrical Parameters Match:

• Varistor voltage specification: 39 V typical (35 V to 43 V range)
• Surge current rating: 40 A
• Maximum AC voltage: 25 V
• Maximum DC voltage: 31 V
• Capacitance: 250 pF @ 1 MHz
• Operating temperature range: -55°C to 85°C

Mechanical Parameters Match:

• Package type: SOD-83A Axial
• Mounting configuration: Through Hole
• Number of circuits: 1

Compliance & Status Match:

• Manufacturer: Littelfuse Inc.
• Product status: Active
• RoHS certification: ROHS3 Compliant
• REACH status: REACH Unaffected
• Series: MA

The V39MA2B maintains identical electrical performance specifications and mechanical compatibility, enabling direct substitution in circuit designs.

Parameter Comparison

Engineering Selection Recommendations

Both the V39MA2S and V39MA2B are active products from Littelfuse Inc. with identical electrical and mechanical specifications. Selection between these parts may be based on inventory availability and supply chain considerations. Both parts maintain ROHS3 compliance and REACH unaffected status, meeting regulatory requirements for industrial and commercial applications. The marginal difference in energy rating (0.17 J versus 0.18 J) does not affect functional equivalence for transient voltage suppression applications within the specified parameters.

Frequently Asked Questions (FAQ)

Q: Can V39MA2B be used as a direct replacement for V39MA2S?

A: Yes. The V39MA2B is a parametric equivalent with identical varistor voltage (39 V typical), surge current (40 A), voltage ratings, temperature range, and SOD-83A axial package configuration. Both parts are manufactured by Littelfuse Inc. and maintain the same compliance certifications.

Q: Are there any differences in electrical performance between these parts?

A: The electrical performance is equivalent. Both parts specify 39 V typical varistor voltage with 35 V to 43 V operating range, 40 A surge current, 25 V maximum AC, and 31 V maximum DC ratings. Energy rating differs marginally (0.17 J versus 0.18 J), which does not affect functional performance within specified operating parameters.

Q: Do both parts use the same package and mounting configuration?

A: Yes. Both the V39MA2S and V39MA2B use SOD-83A axial packaging with through-hole mounting, ensuring mechanical compatibility in existing PCB designs without layout modifications.

Q: Are compliance certifications identical?

A: Yes. Both parts are ROHS3 compliant, REACH unaffected, and carry MSL 1 (Unlimited) moisture sensitivity rating. Both maintain active product status with Littelfuse Inc.

Q: What factors should determine which part to select?

A: Selection should be based on inventory availability, lead time, and supply chain requirements. Electrical and mechanical performance are equivalent, making either part suitable for transient voltage suppression applications within the specified 39 V varistor voltage class.