78601/2MC Pulse Transformer Equivalent & Substitute Parts

Part Overview

The 78601/2MC is a 500µH general purpose pulse transformer with 1:1 turns ratio manufactured by Murata Power Solutions Inc. This surface mount component is designed for pulse transformation applications requiring 10VµS volt-time product. The part carries a "Not For New Designs" status, indicating it has been superseded in the manufacturer's product line. Identifying equivalent substitute parts is necessary for ongoing maintenance, repair, and legacy system support where this transformer specification remains functionally required.

Substiute Parts

78601/2MC

Murata Power Solutions Inc.In Stock: 772578601/2MC Datasheet

Current PartRFQ

78601/2JC

Murata Power Solutions Inc.In Stock: 73478601/2JC Datasheet

MFR RecommendedRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution eligibility for the 78601/2MC is determined by the following critical parameters that must remain constant or compatible:

• Turns Ratio (1:1): Primary to secondary winding ratio must be identical
• ET Product (10VµS): Volt-time product specification must match
• Mounting Type (Surface Mount): Physical mounting configuration must be compatible with existing PCB layouts
• Operating Temperature Range (0°C to 70°C): Thermal operating envelope must support the application
• RoHS and Compliance Status: Environmental and regulatory compliance must be maintained or exceeded

The identified substitute part 78601/2JC shares the same turns ratio, ET product, mounting type, and operating temperature range. However, the inductance value differs (350µH versus 500µH), which represents a functional variation that must be evaluated against specific circuit requirements.

Parameter Comparison

Engineering Selection Recommendations

The 78601/2JC is the manufacturer-designated substitute for the 78601/2MC. Both parts maintain ROHS3 compliance and identical moisture sensitivity ratings, ensuring regulatory and environmental compatibility.

The primary distinction between these parts is the inductance specification: the 78601/2MC provides 500µH while the 78601/2JC provides 350µH. Both maintain the same 10VµS ET product, identical 1:1 turns ratio, and equivalent physical dimensions with interchangeable mounting footprints.

The 78601/2JC carries an "Active" product status, indicating ongoing manufacturer support and availability, whereas the 78601/2MC is designated "Not For New Designs." This status difference reflects the manufacturer's product line evolution and supports long-term supply chain continuity.

Selection between these parts must be based on the specific inductance requirement of the application circuit. The 30% inductance reduction in the 78601/2JC (350µH versus 500µH) will affect impedance characteristics and energy storage capacity, requiring circuit-level evaluation.

Frequently Asked Questions (FAQ)

Q: Can the 78601/2JC directly replace the 78601/2MC in all applications?

A: Both parts share identical turns ratio (1:1), ET product (10VµS), mounting type, and operating temperature range. However, the inductance difference (350µH versus 500µH) means substitution depends on whether the circuit can function with the lower inductance value. Circuit analysis is required to confirm compatibility.

Q: What is the significance of the "Not For New Designs" status on the 78601/2MC?

A: This designation indicates the part has been superseded in the manufacturer's active product line. The 78601/2JC represents the current alternative. For legacy system maintenance, the 78601/2MC remains available, but new designs should utilize the 78601/2JC.

Q: Are the physical dimensions identical between these parts?

A: The parts have equivalent footprints with dimensions of approximately 9.5mm x 9.0mm. The 78601/2MC measures 0.375" L x 0.354" W while the 78601/2JC measures 0.354" L x 0.375" W. Both have identical maximum seated height of 0.250" (6.35mm), making them interchangeable for PCB layout purposes.

Q: Do both parts meet the same compliance standards?

A: Yes. Both the 78601/2MC and 78601/2JC are ROHS3 compliant with MSL rating of 1 (Unlimited). Both carry identical ECCN (EAR99) and HTSUS (8504.31.2000) classifications.

Q: What does the ET (Volt-Time) product of 10VµS represent?

A: The ET product is a fundamental transformer specification that defines the maximum volt-time product the core can handle without saturation. Both parts maintain 10VµS, ensuring equivalent core performance characteristics despite the inductance difference.