Equivalent & Substitute Parts for 78613/3MC Pulse Transformer

Part Overview

The 78613/3MC is a 200µH general purpose pulse transformer manufactured by Murata Power Solutions Inc., configured with a 1CT:1 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 electrical and mechanical compatibility while offering improved product lifecycle support.

Substiute Parts

78613/3MC

Murata Power Solutions Inc.In Stock: 68578613/3MC Datasheet

Current PartRFQ

78613/3JC

Murata Power Solutions Inc.In Stock: 118878613/3JC Datasheet

MFR RecommendedRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution eligibility for the 78613/3MC is determined by the following critical parameters:

• Transformer Type: Must be General Purpose pulse transformer
• Turns Ratio: Must maintain 1CT:1 configuration
• Mounting Type: Must be Surface Mount
• Physical Dimensions: Must match 0.375" L x 0.354" W (9.52mm x 9.00mm) footprint and 0.250" (6.35mm) maximum seated height
• Operating Temperature Range: Must support 0°C ~ 70°C minimum
• Compliance Standards: Must maintain ROHS3 compliance and MSL 1 rating
• ET (Volt-Time) Product: Must match 6VµS specification

The 78613/3JC qualifies as a direct substitute based on these parameters. While the inductance differs (190µH versus 200µH), this variance falls within the acceptable tolerance band for general purpose pulse transformer applications where the ET product and turns ratio remain constant.

Parameter Comparison

Engineering Selection Recommendations

The 78613/3JC is the qualified substitute for the 78613/3MC based on the following engineering criteria:

Product Lifecycle Status: The 78613/3JC carries Active product status, ensuring continued manufacturer support, availability, and compliance maintenance. The original 78613/3MC is designated "Not For New Designs," limiting its viability for ongoing procurement.

Compliance and Certification: Both components maintain ROHS3 compliance and MSL 1 (Unlimited) moisture sensitivity ratings, ensuring equivalent environmental and handling requirements. The 78613/3JC maintains ROHS3 compliance with unaffected REACH status, providing superior regulatory positioning for long-term supply chain stability.

Electrical and Mechanical Compatibility: The substitute maintains identical ET (Volt-Time) product specification (6VµS), turns ratio (1CT:1), physical footprint (0.375" L x 0.354" W), and maximum seated height (0.250"). The inductance variance of 10µH (190µH versus 200µH) represents a 5% tolerance deviation acceptable within general purpose pulse transformer application parameters where the ET product remains constant.

Thermal and Environmental Specifications: Operating temperature range (0°C ~ 70°C) and packaging specifications remain unchanged, ensuring drop-in compatibility in existing thermal and environmental designs.

Frequently Asked Questions (FAQ)

Q: Can the 78613/3JC directly replace the 78613/3MC on existing PCBs?

A: Yes. The 78613/3JC maintains identical physical dimensions (0.375" L x 0.354" W, 0.250" maximum seated height) and surface mount footprint, enabling direct PCB placement without layout modifications.

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

A: Both components share the identical ET (Volt-Time) product of 6VµS and 1CT:1 turns ratio. The 10µH inductance variance represents a 5% tolerance band typical for general purpose pulse transformer specifications. This variance does not affect the core electrical performance parameters that define substitution eligibility.

Q: Why is the 78613/3MC marked "Not For New Designs"?

A: This designation indicates the component has reached end-of-life status within the manufacturer's product portfolio. While existing inventory may remain available, the manufacturer does not recommend this part for new circuit designs. The 78613/3JC, with Active product status, is the designated forward-compatible alternative.

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

A: Both components maintain ROHS3 compliance and MSL 1 (Unlimited) ratings. The 78613/3JC offers improved regulatory positioning with unaffected REACH status, compared to the original part's REACH Affected designation.

Q: What packaging format is used for both components?

A: Both the 78613/3MC and 78613/3JC are supplied in Tube packaging, maintaining consistent handling and storage requirements.