Equivalent & Substitute Parts for 78615/3MC Pulse Transformer

Part Overview

The 78615/3MC is a 200µH General Purpose Pulse Transformer manufactured by Murata Power Solutions Inc., configured with a 1CT:1CT turns ratio for surface mount applications. This component is classified as "Not For New Designs," indicating it has reached end-of-life status. Organizations currently using this part in active production or maintenance applications require qualified substitute components that maintain functional compatibility while transitioning to actively supported alternatives.

Substiute Parts

78615/3MC

Murata Power Solutions Inc.In Stock: 78078615/3MC Datasheet

Current PartRFQ

78615/3JC

Murata Power Solutions Inc.In Stock: 93778615/3JC Datasheet

MFR RecommendedRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution eligibility for the 78615/3MC is determined by the following critical parameters:

• Transformer Type: Must be General Purpose Pulse Transformer
• Turns Ratio: Must maintain 1CT:1CT configuration
• Mounting Type: Must be Surface Mount
• Physical Dimensions: Must match 0.375" L x 0.354" W and 0.250" maximum seated height
• Operating Temperature Range: Must support 0°C to 70°C minimum
• Inductance Tolerance: Inductance values within the 786 series range are acceptable for pulse transformer applications where ET (Volt-Time) product remains constant
• ET (Volt-Time) Product: Must maintain 6VµS specification
• Compliance: Must maintain ROHS3 compliance and REACH Unaffected status

The 78615/3JC qualifies as a direct substitute based on these parameters. Although inductance is specified at 190µH compared to the 200µH of the 78615/3MC, both components share identical ET (Volt-Time) products, physical footprints, mounting characteristics, and compliance certifications. The 78615/3JC additionally carries Active product status, making it the manufacturer-recommended alternative for new procurement and ongoing production support.

Parameter Comparison

Engineering Selection Recommendations

The 78615/3JC is the qualified substitute for the 78615/3MC based on the following engineering criteria:

Product Status Transition: The 78615/3MC carries "Not For New Designs" status, indicating discontinued support. The 78615/3JC maintains Active product status, ensuring ongoing manufacturer support, availability, and compliance updates.

Compliance and Certifications: Both components maintain identical ROHS3 compliance and REACH Unaffected status, satisfying regulatory requirements for current and future production environments.

Functional Equivalence: The 78615/3JC preserves all critical electrical and mechanical parameters: identical ET (Volt-Time) product (6VµS), matching turns ratio (1CT:1CT), identical physical footprint and height, and equivalent operating temperature range. The inductance specification of 190µH versus 200µH remains within the acceptable tolerance band for the 786 series pulse transformer family.

Supply Chain Continuity: Current inventory of the 78615/3MC (715 units) should be managed through existing stock. The 78615/3JC offers superior long-term availability (897 units in stock) and manufacturer commitment to continued production.

Frequently Asked Questions (FAQ)

Q: Can the 78615/3JC be used as a direct replacement for the 78615/3MC in existing PCB assemblies?

A: Yes. The 78615/3JC maintains identical physical dimensions (0.375" L x 0.354" W, 0.250" maximum height), surface mount footprint, and electrical characteristics (6VµS ET product, 1CT:1CT turns ratio). No PCB layout modifications are required.

Q: What is the significance of the inductance difference between 200µH and 190µH?

A: Both components share the same ET (Volt-Time) product of 6VµS, which is the primary parameter governing pulse transformer performance in switching and signal coupling applications. The inductance variation reflects normal manufacturing tolerance within the 786 series family and does not affect functional compatibility.

Q: Why is the 78615/3MC marked "Not For New Designs"?

A: This designation indicates the component has reached end-of-life status and the manufacturer no longer recommends its use in new product development. Existing inventory may continue to be used for maintenance and repair of legacy systems, but new designs should transition to the Active 78615/3JC.

Q: Are there any compliance or certification differences between these parts?

A: No. Both components maintain identical ROHS3 compliance, REACH Unaffected status, Moisture Sensitivity Level 1, and operating temperature range (0°C to 70°C). Regulatory requirements are fully satisfied by either component.

Q: What packaging format is used for both parts?

A: Both the 78615/3MC and 78615/3JC are supplied in Tube packaging, suitable for automated assembly processes and standard component handling procedures.