TMOV34S481EP Equivalent & Substitute Parts

Part Overview

The TMOV34S481EP is a 750V, 40kA varistor manufactured by Littelfuse, designed for transient voltage suppression applications. This through-hole component features a square 34mm package with formed tabs and is thermally protected. The part is currently active in production with 911 units in stock. Equivalent parts may be required due to supply chain considerations, design revisions, or inventory management across manufacturing facilities.

Substiute Parts

TMOV34S481EP

LittelfuseIn Stock: 982TMOV34S481EP Datasheet

Current PartRFQ

V481HB34

Littelfuse Inc.In Stock: 754V481HB34 Datasheet

Parametric EquivalentRFQ

Key Parameters

Substitute Part Grouping Explanation

The V481HB34 qualifies as a parametric equivalent to the TMOV34S481EP based on the following critical substitution criteria:

• Identical varistor voltage rating: 750V typical (675V minimum, 825V maximum)
• Identical surge current rating: 40 kA
• Identical maximum AC and DC voltage specifications: 480V AC, 640V DC
• Identical package and mounting configuration: Square 34mm with formed tabs, through-hole
• Identical operating temperature range: -55°C to 85°C
• Identical number of circuits: 1
• Identical capacitance specification: 2700 pF @ 1 MHz
• Identical compliance certifications: ROHS3 Compliant, REACH Unaffected

Both parts are manufactured by Littelfuse Inc. and maintain active product status.

Parameter Comparison

Engineering Selection Recommendations

Both the TMOV34S481EP and V481HB34 are active, production-status components manufactured by Littelfuse with full ROHS3 compliance and REACH unaffected status. The parts are electrically and mechanically interchangeable across all specified parameters including voltage ratings, surge current capacity, operating temperature range, and package configuration.

The primary difference between the two parts is the energy rating: the TMOV34S481EP is rated at 960J while the V481HB34 is rated at 650J. This distinction should be evaluated against specific application energy absorption requirements. Both parts maintain identical electrical performance specifications for voltage suppression and surge current handling.

Selection between these parts should be based on application-specific energy dissipation requirements and component availability.

Frequently Asked Questions (FAQ)

Q: Are TMOV34S481EP and V481HB34 direct substitutes? A: Yes, these parts are parametric equivalents. All critical electrical specifications (voltage rating, surge current, operating temperature) and mechanical specifications (package, mounting type) are identical. The energy rating differs and should be evaluated for your specific application.

Q: Can I use V481HB34 in place of TMOV34S481EP in my circuit? A: The parts are mechanically and electrically compatible for voltage suppression function. Verify that the 650J energy rating of the V481HB34 meets your application's transient energy requirements, as the TMOV34S481EP provides 960J.

Q: Are both parts compliant with environmental regulations? A: Yes. Both TMOV34S481EP and V481HB34 are ROHS3 compliant and REACH unaffected, meeting current environmental standards for electronic components.

Q: What is the difference in series designation? A: TMOV34S481EP belongs to the TMOV® 34S series, while V481HB34 belongs to the HB34 series. Both are Littelfuse varistor products with identical electrical and mechanical specifications for this voltage and current rating.

Q: Are the package dimensions identical? A: Yes. Both parts use a square 34mm package with formed tabs and through-hole mounting configuration, ensuring identical PCB footprint and assembly compatibility.