Murata Power Solutions 55200C Current Sense Transformer Equivalent & Substitute Parts

Part Overview

The Murata Power Solutions 55200C is a 1:1:200 current sense transformer designed for invasive current sensing applications in the 50kHz to 500kHz frequency range. This surface mount component features a 60 mH inductance with 2.3mOhm primary and 3.6Ohm secondary DC resistance, rated for 15A operation. The product is classified as obsolete, making identification of compatible substitute components essential for ongoing design support and production continuity.

Substiute Parts

55200C

Murata Power Solutions Inc.In Stock: 99555200C Datasheet

Current PartRFQ

PE-68383NL

Pulse ElectronicsIn Stock: 1018PE-68383NL Datasheet

MFR RecommendedRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution of the obsolete Murata 55200C is determined by strict equivalence across the following critical parameters:

Primary Substitution Criteria:

• Turns ratio of 1:1:200 (exact match required)
• Frequency range of 50kHz – 500kHz (minimum coverage required)
• Invasive current sensing type
• Surface mount packaging
• Inductance within acceptable tolerance (59.2 mH – 60 mH range)
• DC resistance values compatible with circuit design specifications

The Pulse Electronics PE-68383NL meets all substitution criteria as an active product with identical turns ratio, frequency range, and mounting type. Mechanical dimensions remain within acceptable tolerance for PCB layout compatibility.

Parameter Comparison

Engineering Selection Recommendations

The Pulse Electronics PE-68383NL is the qualified substitute for the obsolete Murata 55200C based on the following factors:

Functional Equivalence: Both components share identical turns ratios (1:1:200) and frequency operating ranges (50kHz – 500kHz), ensuring equivalent current sensing performance in target applications.

Regulatory Compliance: The PE-68383NL carries active product status with RoHS compliance certification, providing assurance for long-term supply chain availability and regulatory alignment. Both components maintain REACH Unaffected and EAR99 ECCN classifications.

Physical Compatibility: Surface mount packaging and mechanical dimensions are compatible with existing PCB layouts. The PE-68383NL footprint (12.57mm × 12.45mm) is dimensionally equivalent to the 55200C (12.60mm × 14.60mm), with seated heights matching at 7.10mm and 7.11mm respectively.

Electrical Performance: The PE-68383NL exhibits lower primary DC resistance (1.15mOhm versus 2.3mOhm), which reduces primary-side losses. Secondary DC resistance (3.9Ohm versus 3.6Ohm) remains within acceptable tolerance for circuit operation. Inductance values (59.2 mH versus 60 mH) are equivalent within standard component tolerances.

Frequently Asked Questions (FAQ)

Q: Can the Pulse Electronics PE-68383NL be used as a direct replacement for the Murata 55200C?

A: Yes. Both components share identical turns ratios, frequency ranges, and invasive current sensing type. Surface mount packaging and mechanical dimensions are compatible. The PE-68383NL is an active product with current availability, making it suitable for design transitions from the obsolete 55200C.

Q: What are the key differences between these two transformers?

A: Primary differences are product status (PE-68383NL is active versus 55200C obsolete), RoHS compliance (PE-68383NL certified), and DC resistance values. The PE-68383NL has lower primary resistance (1.15mOhm versus 2.3mOhm) and slightly higher secondary resistance (3.9Ohm versus 3.6Ohm). Inductance values are equivalent within tolerance.

Q: Are there any PCB layout considerations when switching to the PE-68383NL?

A: Mechanical dimensions are compatible. The PE-68383NL footprint is slightly smaller (12.57mm × 12.45mm versus 12.60mm × 14.60mm), and seated heights are equivalent (7.10mm and 7.11mm). No PCB redesign is required for standard applications.

Q: Does the lower primary DC resistance of the PE-68383NL affect circuit performance?

A: Lower primary resistance reduces power dissipation on the primary side, which is generally beneficial. Circuit performance remains equivalent for current sensing applications, as the turns ratio and frequency response are identical. Verify that secondary resistance tolerance (3.9Ohm versus 3.6Ohm) is acceptable for your specific measurement circuit.

Q: What is the moisture sensitivity level for both components?

A: Both the Murata 55200C and Pulse Electronics PE-68383NL carry MSL 1 (Unlimited) classification, indicating no moisture sensitivity restrictions for storage or handling.