Murata Power Solutions 78253/55MVC Transformer - Equivalent & Substitute Parts

Part Overview

The Murata Power Solutions 78253/55MVC is a surface mount transformer designed for use with the MAX253 integrated circuit. This component features a 240 µH inductance rating and is housed in a compact 9.00mm × 9.52mm package with a maximum seated height of 6.60mm. The part is classified as "Not For New Designs," indicating it has been superseded in Murata's product portfolio. Organizations requiring this transformer for legacy system maintenance, repair, or existing design support should evaluate available substitute components that maintain electrical and mechanical compatibility.

Substiute Parts

78253/55MVC

Murata Power SolutionsIn Stock: 259978253/55MVC Datasheet

Current PartRFQ

78253/55JVC

Murata Power Solutions Inc.In Stock: 193878253/55JVC Datasheet

DirectRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution eligibility for the 78253/55MVC is determined by the following critical parameters:

• Mounting Type: Must be Surface Mount to ensure compatibility with existing PCB layouts
• Package Footprint: Must match 9.00mm × 9.52mm dimensions to fit designated board locations
• Maximum Height: Must not exceed 6.60mm seated height to avoid clearance conflicts
• Series Compatibility: Must belong to the 78253 series for MAX253 application support
• Regulatory Compliance: Must maintain ROHS3 compliance and MSL 1 rating for environmental and handling requirements

The 78253/55JVC qualifies as a direct substitute based on these parameters. While it features a different inductance value (360 µH versus 240 µH), it maintains identical mechanical dimensions, mounting type, and regulatory compliance status. The inductance difference reflects a design variant within the same product family intended for the same application platform.

Parameter Comparison

Engineering Selection Recommendations

The 78253/55JVC presents a viable substitute option based on the following factors:

Mechanical Compatibility: Both components share identical footprint dimensions (9.00mm × 9.52mm) and maximum seated height (6.60mm), ensuring direct PCB placement compatibility without layout modifications.

Regulatory Alignment: The 78253/55JVC maintains ROHS3 compliance and MSL 1 rating, matching the environmental and handling requirements of the original component.

Product Status Advantage: The 78253/55JVC carries an "Active" product status, indicating ongoing manufacturer support and availability, whereas the 78253/55MVC is designated "Not For New Designs." This distinction provides supply chain continuity for organizations requiring long-term component sourcing.

Application Compatibility: Both transformers are specified for MAX253 applications, confirming functional alignment within the intended circuit topology.

Selection between these components should be based on circuit-specific inductance requirements and application performance parameters.

Frequently Asked Questions (FAQ)

Q: Can the 78253/55JVC directly replace the 78253/55MVC in existing designs?

A: Both components share identical mechanical dimensions, mounting type, and regulatory compliance status. Substitution feasibility depends on whether the circuit design accommodates the 360 µH inductance value of the 78253/55JVC versus the 240 µH specification of the 78253/55MVC. Circuit analysis is required to confirm electrical compatibility.

Q: What is the significance of the "Not For New Designs" status on the 78253/55MVC?

A: This designation indicates the component has been superseded in Murata's product portfolio. The 78253/55JVC, with its "Active" status, represents the current product offering for this application family and is recommended for ongoing sourcing requirements.

Q: Are the package dimensions identical between these two transformers?

A: Yes. Both the 78253/55MVC and 78253/55JVC feature identical footprint dimensions of 9.00mm × 9.52mm and maximum seated height of 6.60mm, ensuring compatibility with existing PCB layouts without modification.

Q: Do both components meet the same environmental and handling standards?

A: Yes. Both transformers are ROHS3 compliant and carry MSL 1 (Unlimited) ratings, meeting identical environmental and moisture sensitivity requirements.

Q: What is the primary electrical difference between these substitute parts?

A: The inductance specification differs: the 78253/55MVC is rated at 240 µH, while the 78253/55JVC is rated at 360 µH. Both are designed for MAX253 applications but represent different inductance variants within the 78253 series.