Murata Power Solutions 78615/16MC Pulse Transformer - Equivalent & Substitute Parts

Part Overview

The Murata Power Solutions 78615/16MC is a 4mH general purpose pulse transformer with 1CT:1CT turns ratio, designed for surface mount applications. This component features a compact form factor (9.52mm × 9.00mm) and operates across a 0°C to 70°C temperature range. The part is classified as "Not For New Designs," indicating it has been superseded in Murata's product portfolio. Organizations using this component in active production or maintenance applications require qualified substitute options that maintain electrical and mechanical compatibility while offering improved product status or extended operational parameters.

Substiute Parts

78615/16MC

Murata Power SolutionsIn Stock: 96578615/16MC Datasheet

Current PartRFQ

78615/16JC

Murata Power Solutions Inc.In Stock: 126178615/16JC Datasheet

MFR RecommendedRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution eligibility for the 78615/16MC is determined by strict equivalence across the following critical parameters:

• Inductance: Must equal 4mH
• ET (Volt-Time): Must equal 28VµS
• Turns Ratio: Must equal 1CT:1CT
• Mounting Type: Must be Surface Mount
• Transformer Type: Must be General Purpose
• RoHS Compliance: Must maintain ROHS3 Compliant status
• Moisture Sensitivity Level: Must be MSL 1 or better

The 78615/16JC qualifies as a direct substitute, meeting all electrical specifications and compliance requirements while offering improved product status (Active vs. Not For New Designs) and extended operating temperature range.

Parameter Comparison

Engineering Selection Recommendations

The 78615/16JC is the qualified substitute for the 78615/16MC based on the following engineering criteria:

Electrical Equivalence: Both parts maintain identical inductance (4mH), ET rating (28VµS), and turns ratio (1CT:1CT), ensuring functional interchangeability in circuit applications.

Compliance Status: Both components are ROHS3 Compliant with MSL 1 rating, meeting environmental and reliability standards. The 78615/16JC carries REACH Unaffected status, while the main part is REACH Affected; this distinction may influence supply chain considerations depending on regulatory jurisdiction.

Product Lifecycle: The 78615/16JC holds Active product status, whereas the 78615/16MC is designated "Not For New Designs." This status difference makes the 78615/16JC the appropriate choice for new circuit designs and long-term production planning.

Thermal Operating Range: The 78615/16JC extends the operating temperature range to -40°C ~ 85°C compared to the main part's 0°C ~ 70°C, providing broader environmental compatibility without compromising electrical performance.

Physical Compatibility: Dimensional differences are minimal (length and width dimensions are transposed at 9.52mm and 9.00mm), and both maintain identical maximum seated height (6.35mm), ensuring PCB layout compatibility.

Frequently Asked Questions (FAQ)

Q: Can the 78615/16JC be used as a direct replacement for the 78615/16MC in existing designs?

A: Yes. The 78615/16JC meets all critical electrical parameters (4mH inductance, 28VµS ET, 1CT:1CT turns ratio) and maintains identical physical height. The transposed length and width dimensions (9.52mm vs. 9.00mm) are within the same footprint class and do not affect functional compatibility. PCB layout verification is recommended to confirm clearance.

Q: What is the significance of the "Not For New Designs" status on the 78615/16MC?

A: This designation indicates the part has been superseded in Murata's active product line. While existing inventory remains available, the 78615/16JC is the recommended choice for new circuit development and production planning to ensure long-term supply continuity and access to manufacturer support.

Q: Are there compliance differences between these parts?

A: Both parts are ROHS3 Compliant and carry EAR99 ECCN classification. The 78615/16JC is REACH Unaffected, while the 78615/16MC is REACH Affected. This distinction may impact procurement in regions with strict REACH compliance requirements.

Q: Does the extended temperature range of the 78615/16JC affect its electrical performance?

A: The 78615/16JC maintains the same inductance and ET specifications across its -40°C ~ 85°C operating range. The extended range provides design flexibility for applications requiring operation outside the 78615/16MC's 0°C ~ 70°C window without electrical performance degradation.

Q: Are the physical dimensions identical between these parts?

A: The maximum seated height is identical at 0.250" (6.35mm). Length and width dimensions are transposed: the 78615/16MC measures 9.52mm L × 9.00mm W, while the 78615/16JC measures 9.00mm L × 9.52mm W. Both fit within the same toroidal footprint class. PCB layout review is necessary to confirm orientation compatibility.