Murata Power Solutions 78604/3MC Pulse Transformer - Equivalent & Substitute Parts

Part Overview

The Murata Power Solutions 78604/3MC is a 200µH general purpose pulse transformer with a 2:1 turns ratio, designed for surface mount applications. This component features a 6VµS volt-time product and operates across a 0°C to 70°C temperature range. The 78604/3MC carries a "Not For New Designs" product status, indicating that Murata has transitioned this model out of active production. For new design implementations or ongoing procurement requirements, identifying qualified substitute components is essential to ensure design continuity and supply chain reliability.

Substiute Parts

78604/3MC

Murata Power Solutions Inc.In Stock: 89178604/3MC Datasheet

Current PartRFQ

78604/3JC

Murata Power Solutions Inc.In Stock: 115678604/3JC Datasheet

MFR RecommendedRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution eligibility for the 78604/3MC is determined by strict equivalence across the following critical parameters:

• Inductance Value: Must be 200µH
• Turns Ratio: Must be 2:1 (Primary:Secondary)
• ET Product: Must be 6VµS
• Mounting Type: Must be Surface Mount
• Physical Dimensions: Package footprint and height must be compatible with PCB layout constraints
• Compliance Standards: RoHS3 compliance and MSL rating must meet or exceed the original specification

The 78604/3JC qualifies as a direct substitute based on matching all critical electrical parameters and maintaining identical mechanical compatibility. The primary distinction is product status: the 78604/3JC is Active, whereas the 78604/3MC is Not For New Designs.

Parameter Comparison

Engineering Selection Recommendations

The 78604/3JC is the qualified substitute for the 78604/3MC based on the following engineering criteria:

Electrical Equivalence: Both components share identical inductance (200µH), turns ratio (2:1), and ET product (6VµS), ensuring functional interchangeability in pulse transformer applications.

Mechanical Compatibility: Package dimensions are nominally equivalent with minor length and width transposition (0.375" x 0.354" versus 0.354" x 0.375"). Both maintain the same 0.250" maximum seated height, confirming PCB footprint compatibility.

Compliance and Certification: Both parts maintain ROHS3 compliance, MSL Level 1 rating, and identical ECCN/HTSUS classifications, satisfying regulatory and supply chain requirements.

Product Status Advantage: The 78604/3JC carries Active product status, ensuring long-term availability and continued manufacturer support, whereas the 78604/3MC is designated Not For New Designs.

Temperature Performance: The 78604/3JC provides an extended operating temperature range (-40°C to 85°C) compared to the 78604/3MC (0°C to 70°C), offering greater thermal margin for demanding applications.

For new designs or ongoing procurement, the 78604/3JC is the recommended selection to ensure supply continuity and manufacturer support.

Frequently Asked Questions (FAQ)

Q: Can the 78604/3JC be used as a direct replacement for the 78604/3MC in existing designs?

A: Yes. Both components are electrically and mechanically equivalent across all critical parameters: 200µH inductance, 2:1 turns ratio, 6VµS ET product, and identical surface mount package dimensions. The 78604/3JC is suitable for retrofit applications.

Q: What is the significance of the "Not For New Designs" status on the 78604/3MC?

A: This designation indicates that Murata has discontinued active production and support for the 78604/3MC. New design implementations should specify the 78604/3JC to ensure long-term component availability and manufacturer technical support.

Q: Are there dimensional differences between the 78604/3MC and 78604/3JC?

A: The package dimensions show a minor transposition: the 78604/3MC measures 0.375" L x 0.354" W, while the 78604/3JC measures 0.354" L x 0.375" W. Both maintain identical height (0.250" maximum). This dimensional swap does not affect PCB footprint compatibility for standard surface mount applications.

Q: Do both parts meet the same compliance standards?

A: Yes. Both the 78604/3MC and 78604/3JC are ROHS3 compliant, carry MSL Level 1 rating, and share identical ECCN (EAR99) and HTSUS (8504.31.2000) classifications.

Q: What is the temperature operating range difference, and does it matter for my application?

A: The 78604/3MC operates from 0°C to 70°C, while the 78604/3JC operates from -40°C to 85°C. The 78604/3JC provides a wider thermal envelope. If your application operates within the 0°C to 70°C range, both are functionally equivalent. For applications requiring extended temperature performance, the 78604/3JC offers superior thermal margin.

Q: Are packaging options identical for both parts?

A: Both components are supplied in Tube packaging, maintaining consistent handling and storage requirements.