TMOV14R250M Equivalent & Substitute Parts

Part Overview

The TMOV14R250M is a 390 V, 6 kA Transient Voltage Suppressor (TVS) varistor manufactured by Littelfuse Inc. in the iTMOV® series. This through-hole disc component is designed for single-circuit transient voltage suppression applications with a 14mm form factor and 3-lead configuration. The part is currently classified as obsolete, making identification of active equivalent substitutes essential for ongoing design support and procurement.

Substiute Parts

TMOV14R250M

Littelfuse Inc.In Stock: 1212TMOV14R250M Datasheet

Current PartRFQ

TMOV14RP250M

Littelfuse Inc.In Stock: 3057TMOV14RP250M Datasheet

DirectRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution of the TMOV14R250M is determined by strict equivalence across the following electrical and mechanical parameters:

• Varistor voltage rating (typical value 390 V, with tolerance range 351 V – 429 V)
• Surge current capacity (6 kA)
• Energy absorption (100 J)
• Single-circuit configuration
• Through-hole mounting with 14mm disc package and 3-lead form factor
• Operating temperature range (-55°C to 85°C)
• Thermal protection feature

The TMOV14RP250M meets all these criteria and is classified as a direct manufacturer equivalent. The primary distinction is product status: TMOV14R250M is obsolete, while TMOV14RP250M is active production.

Parameter Comparison

Engineering Selection Recommendations

The TMOV14RP250M is the direct active equivalent for the obsolete TMOV14R250M. Both parts share identical electrical specifications and mechanical form factors. Selection of TMOV14RP250M is supported by:

• Active production status, ensuring long-term availability and supply chain continuity
• ROHS3 compliance, meeting current environmental and regulatory requirements
• Identical performance parameters across all critical electrical and thermal characteristics
• Same manufacturer (Littelfuse Inc.) and series designation (iTMOV®), confirming design compatibility

For applications currently using TMOV14R250M, direct substitution with TMOV14RP250M requires no circuit redesign or validation beyond standard component qualification procedures.

Frequently Asked Questions (FAQ)

Q: Can TMOV14RP250M be used as a direct replacement for TMOV14R250M?

A: Yes. Both parts are manufactured by Littelfuse Inc. and share identical electrical ratings (390 V typical varistor voltage, 6 kA surge current, 100 J energy), operating temperature range (-55°C to 85°C), and mechanical packaging (14mm disc, 3-lead through-hole). No circuit modifications are required.

Q: What is the primary difference between these two parts?

A: TMOV14R250M is obsolete, while TMOV14RP250M is in active production. Additionally, TMOV14RP250M is ROHS3 compliant, whereas TMOV14R250M is RoHS non-compliant.

Q: Are there any packaging differences?

A: No. Both parts use identical 14mm disc packaging with 3-lead through-hole mounting. Footprint and board layout compatibility are maintained.

Q: Does the RoHS compliance difference affect electrical performance?

A: No. RoHS compliance relates to material composition and environmental standards, not electrical or thermal performance. All electrical parameters remain identical between the two parts.

Q: What inventory status should be considered for procurement?

A: TMOV14RP250M has 2,959 pieces in active stock, supporting immediate procurement. TMOV14R250M has 1,116 pieces available but is obsolete and should not be specified for new designs.