Murata Power Solutions 78601/4MC-R Pulse Transformer Equivalent & Substitute Parts

Part Overview

The Murata Power Solutions 78601/4MC-R is a 67µH general purpose pulse transformer with a 1:1 turns ratio, designed for surface mount applications. This component is classified as "Not For New Designs," indicating it has been superseded in the manufacturer's product line. Organizations requiring this transformer for legacy system support, maintenance, or repair applications must identify compatible substitute components that maintain electrical and mechanical compatibility within the specified parameter tolerances.

Substiute Parts

78601/4MC-R

Murata Power SolutionsIn Stock: 137178601/4MC-R Datasheet

Current PartRFQ

78601/4JC-R

Murata Power Solutions Inc.In Stock: 74578601/4JC-R Datasheet

DirectRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitute components for the 78601/4MC-R must satisfy the following criteria to ensure functional and mechanical compatibility:

Critical Matching Parameters:

• Turns ratio of 1:1 (primary to secondary)
• Surface mount mounting type
• Identical physical footprint (0.375" L x 0.354" W / 9.52mm x 9.00mm)
• Maximum seated height of 0.250" (6.35mm)
• Operating temperature range of 0°C to 70°C
• ET (Volt-Time) product of 4VµS
• Tape & Reel packaging format

Allowable Variation:

• Inductance values within the general purpose pulse transformer category may vary while maintaining the specified ET product and electrical performance characteristics.

The 78601/4JC-R qualifies as a direct substitute based on these parameters, despite the inductance difference of 58µH versus 67µH, as both components share identical mechanical specifications, turns ratio, ET product, operating temperature range, and packaging format.

Parameter Comparison

Engineering Selection Recommendations

The 78601/4JC-R serves as the primary substitute for the 78601/4MC-R based on the following engineering considerations:

Product Status Alignment: The 78601/4MC-R is designated "Not For New Designs," whereas the 78601/4JC-R maintains "Active" status within the manufacturer's current product portfolio. This status difference indicates that the 78601/4JC-R represents the current generation component for this functional category.

Regulatory Compliance: Both components maintain identical compliance certifications, including ROHS3 compliance, REACH Unaffected status, and MSL Level 1 (Unlimited) moisture sensitivity rating. This ensures equivalent environmental and regulatory performance in applications requiring these certifications.

Mechanical and Electrical Compatibility: The components share identical physical footprints, mounting types, operating temperature ranges, and ET products. The inductance variation (67µH to 58µH) occurs within the general purpose pulse transformer category while maintaining the specified ET product of 4VµS, ensuring functional compatibility in circuit applications designed for this transformer class.

Frequently Asked Questions (FAQ)

Q: Can the 78601/4JC-R be used as a direct replacement for the 78601/4MC-R in existing designs?

A: Yes. Both components share identical mechanical specifications (footprint, height, mounting type), electrical characteristics (1:1 turns ratio, 4VµS ET product, operating temperature range), and packaging format. The inductance difference of 9µH occurs within acceptable tolerances for general purpose pulse transformer applications.

Q: What is the significance of the "Not For New Designs" status on the 78601/4MC-R?

A: This designation indicates the component has been superseded in the manufacturer's product line. The 78601/4JC-R, with "Active" status, represents the current recommended component for new applications requiring this transformer function.

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

A: No. Both components maintain identical RoHS3 compliance, REACH Unaffected status, and MSL Level 1 ratings. They are equivalent from a regulatory and environmental standpoint.

Q: Does the inductance difference affect circuit performance?

A: The inductance values (67µH versus 58µH) differ by approximately 13%. Both components maintain the same ET product (4VµS), which is the primary parameter governing pulse transformer performance in most applications. Circuit-specific validation may be required for applications with strict inductance tolerances.

Q: Are both components available in Tape & Reel packaging?

A: Yes. Both the 78601/4MC-R and 78601/4JC-R are supplied in Tape & Reel (TR) packaging format, ensuring compatibility with automated assembly processes.

Q: What is the operating temperature range for both transformers?

A: Both components operate across the identical temperature range of 0°C to 70°C, ensuring thermal compatibility in applications within this specification.