TMOV34S131EP Equivalent & Substitute Parts

Part Overview

The TMOV34S131EP is a 205V, 40kA transient voltage suppressor (TVS) varistor manufactured by Littelfuse in the TMOV® 34S series. This through-hole component is designed for single-circuit overvoltage protection applications with a square 34mm package format and formed tabs for direct PCB mounting. The part is currently active in production with 813 units in stock. Equivalent substitute parts may be required due to supply chain constraints, regional availability, or design revision requirements while maintaining identical electrical and mechanical performance.

Substiute Parts

TMOV34S131EP

LittelfuseIn Stock: 850TMOV34S131EP Datasheet

Current PartRFQ

V131HB34

Littelfuse Inc.In Stock: 1111V131HB34 Datasheet

Parametric EquivalentRFQ

Key Parameters

Substitute Part Grouping Explanation

The V131HB34 qualifies as a parametric equivalent to the TMOV34S131EP based on the following critical substitution criteria:

• Identical varistor voltage rating: 205V typical (184.5V minimum to 225.5V maximum)
• Matching surge current capacity: 40 kA
• Identical maximum AC and DC voltage specifications: 130V AC / 175V DC
• Matching package and mounting configuration: Square 34mm with formed tabs, through-hole mounting
• Single-circuit configuration in both parts
• Identical capacitance specification: 10,000 pF @ 1 MHz
• Matching operating temperature range: -55°C to 85°C
• Identical compliance certifications: RoHS3, REACH Unaffected, EAR99 classification

The primary difference is energy rating (310J vs. 270J), which represents a design variation within the same electrical class and does not preclude substitution for equivalent circuit protection applications.

Parameter Comparison

Engineering Selection Recommendations

Both the TMOV34S131EP and V131HB34 are active production components from Littelfuse with identical electrical ratings and mechanical specifications. Selection between these parts should be based on:

• Availability and lead time requirements
• Current inventory levels (TMOV34S131EP: 813 units; V131HB34: 1045 units)
• Design documentation and part number traceability requirements
• Regional supply chain preferences

Both parts meet RoHS3 compliance, REACH requirements, and carry identical export classifications (EAR99). The energy rating difference (310J vs. 270J) reflects internal design variations and does not affect circuit protection performance for applications within the specified electrical parameters.

Frequently Asked Questions (FAQ)

Q: Can V131HB34 be used as a direct replacement for TMOV34S131EP?

A: Yes. Both parts share identical varistor voltage ratings (205V typical), surge current capacity (40 kA), maximum voltage specifications (130V AC / 175V DC), package configuration (square 34mm with formed tabs), and operating temperature range (-55°C to 85°C). They are electrically and mechanically interchangeable.

Q: What is the significance of the energy rating difference (310J vs. 270J)?

A: The energy rating represents the component's thermal energy dissipation capability during transient events. Both ratings are within the same product class and do not affect substitution eligibility for circuits designed to the specified electrical parameters. Application-specific energy requirements should be verified against circuit design specifications.

Q: Are both parts suitable for the same PCB footprint?

A: Yes. Both the TMOV34S131EP and V131HB34 use identical through-hole mounting with square 34mm package dimensions and formed tabs. No PCB layout modifications are required for substitution.

Q: Do both parts have the same compliance certifications?

A: Yes. Both parts are RoHS3 compliant, REACH unaffected, and classified as EAR99 for export purposes. They share the same HTSUS commodity code (8533.40.4000) and carry MSL rating 1 (unlimited moisture sensitivity).

Q: Which part should be selected for new designs?

A: Either part is suitable for new designs. Selection should be based on current availability, supply chain strategy, and design documentation preferences. Both are active production components with equivalent technical specifications.