TMOV34S151M Equivalent & Substitute Parts

Part Overview

The TMOV34S151M is a 240 V, 40 kA Transient Voltage Suppressor (TVS) varistor manufactured by Littelfuse Inc. in the TMOV® 34S series. This component is designed for single-circuit transient voltage suppression applications with a square 34mm form factor and through-hole mounting configuration. The part is currently listed as obsolete, necessitating identification of active equivalent alternatives that maintain identical electrical and mechanical specifications for continued system support and new design implementations.

Substiute Parts

TMOV34S151M

Littelfuse Inc.In Stock: 908TMOV34S151M Datasheet

Current PartRFQ

TMOV34S151MP

Littelfuse Inc.In Stock: 1135TMOV34S151MP Datasheet

DirectRFQ

TMOV34S151MPX2696

LittelfuseIn Stock: 922TMOV34S151MPX2696 Datasheet

Parametric EquivalentRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitute parts for the TMOV34S151M are qualified based on strict electrical and mechanical parameter matching within the allowed tolerances for this product category:

Electrical Parameters (Must Match):

• Varistor Voltage (Typ): 240 V
• Varistor Voltage Range: 216 V (Min) to 264 V (Max)
• Current - Surge: 40 kA
• Maximum AC Volts: 150 V
• Maximum DC Volts: 200 V
• Energy: 360 J
• Capacitance @ 1 MHz: 8000 pF
• Operating Temperature: -55°C to 85°C

Mechanical Parameters (Must Match):

• Mounting Type: Through Hole
• Package / Case: Square 34mm, Formed Tabs, 3-Lead
• Number of Circuits: 1
• Features: Thermally Protected

Both identified substitute parts meet all specified electrical and mechanical parameters and are classified as active products with current manufacturing status.

Parameter Comparison

Engineering Selection Recommendations

Both substitute parts provide complete functional equivalence to the TMOV34S151M with identical electrical performance and mechanical compatibility. Selection between the two active alternatives should be based on the following criteria:

TMOV34S151MP is the direct manufacturer substitute with standard bulk packaging. This part is recommended for applications where standard commercial packaging is acceptable and represents the primary replacement path for the obsolete TMOV34S151M.

TMOV34S151MPX2696 is a parametric equivalent with identical specifications and bulk packaging. This part is suitable for applications requiring the same electrical and mechanical performance characteristics.

Both substitute parts are ROHS3 compliant and REACH unaffected, providing improved regulatory compliance compared to the obsolete main part. The choice between these two active alternatives does not affect circuit performance, as all critical electrical parameters and mechanical specifications are identical.

Frequently Asked Questions (FAQ)

Q: Can TMOV34S151MP and TMOV34S151MPX2696 be used interchangeably with TMOV34S151M?

A: Yes. Both substitute parts maintain identical electrical specifications (240 V typical varistor voltage, 40 kA surge current, 360 J energy rating) and mechanical configuration (square 34mm through-hole package with 3-lead formed tabs). Direct substitution is electrically and mechanically compatible.

Q: What is the difference between TMOV34S151MP and TMOV34S151MPX2696?

A: Both parts are manufactured by Littelfuse in the TMOV® 34S series with identical electrical and mechanical parameters. The difference in part numbering reflects internal manufacturer designation. Both are active products with equivalent performance characteristics.

Q: Are there any compliance differences between the main part and the substitutes?

A: Yes. The obsolete TMOV34S151M is RoHS non-compliant, while both substitute parts (TMOV34S151MP and TMOV34S151MPX2696) are ROHS3 compliant and REACH unaffected. This represents improved regulatory compliance for new designs and ongoing production.

Q: Will the through-hole mounting and 34mm square package remain the same with these substitutes?

A: Yes. All three parts share identical mounting type (through hole) and package configuration (square 34mm with formed tabs and 3-lead configuration). PCB layout and mechanical assembly requirements remain unchanged.

Q: Are the operating temperature ranges identical?

A: Yes. All three parts operate across the same temperature range of -55°C to 85°C, ensuring thermal compatibility in existing circuit designs.

Q: What is the moisture sensitivity level for these parts?

A: All three parts have a Moisture Sensitivity Level (MSL) of 1 (Unlimited), indicating no moisture sensitivity restrictions for storage and handling.