Bourns 7202 Current Sense Transformer - Equivalent & Substitute Parts

Part Overview

The Bourns 7202 is a current sense transformer rated for 20A unidirectional operation in through-hole packaging. This component is classified as obsolete, making identification of compatible substitutes essential for ongoing system support and new design implementations. Current sense transformers serve as non-invasive measurement devices for AC current monitoring in power management and control applications. The obsolete status necessitates evaluation of active alternative components that maintain functional and mechanical compatibility.

Substiute Parts

7202

Bourns Inc.In Stock: 7167202 Datasheet

Current PartRFQ

PE-51687NL

Pulse ElectronicsIn Stock: 2004PE-51687NL Datasheet

DirectRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution of the Bourns 7202 is based on the following critical parameters:

• Current Rating: 20A minimum capacity required
• Mounting Type: Through-hole configuration for PCB compatibility
• Physical Envelope: Dimensions must accommodate existing board layout (19.00mm x 11.00mm footprint, 20.10mm max height)
• Functional Type: Current sense transformer with invasive or non-invasive measurement capability
• Electrical Characteristics: Primary and secondary impedance, inductance, and frequency response suitable for the application

The Pulse Electronics PE-51687NL meets these substitution criteria as an active component with equivalent current handling, through-hole mounting, compatible physical dimensions, and specified electrical performance within the operating frequency range.

Parameter Comparison

Engineering Selection Recommendations

The Pulse Electronics PE-51687NL is a direct functional substitute for the obsolete Bourns 7202. Both components share identical 20A current ratings and through-hole mounting configurations. Physical dimensions are compatible within standard PCB layout tolerances, with the PE-51687NL footprint slightly smaller than the original specification.

The PE-51687NL offers the advantage of active product status, ensuring continued availability and supply chain stability. The component achieves RoHS compliance, addressing regulatory requirements that may not have applied to the original Bourns 7202 design. Both components maintain MSL 1 moisture sensitivity classification, indicating no special storage or handling requirements.

Selection of the PE-51687NL is appropriate for applications requiring current measurement in the 20kHz to 200kHz frequency range with 100:1 current transformation ratio. Verification of frequency response and impedance characteristics against the original application requirements is necessary to confirm functional equivalence in the specific circuit context.

Frequently Asked Questions (FAQ)

Q: Can the Pulse Electronics PE-51687NL directly replace the Bourns 7202 without PCB modifications?

A: The PE-51687NL is mechanically compatible with the Bourns 7202 footprint. Physical dimensions are within acceptable tolerance ranges for through-hole mounting. However, electrical performance characteristics must be verified against the original circuit design specifications before implementation.

Q: What is the significance of the RoHS compliance difference between these components?

A: The Bourns 7202 is RoHS non-compliant, while the PE-51687NL is RoHS compliant. This distinction affects regulatory compliance for new designs and systems subject to RoHS directives. Existing systems using the Bourns 7202 may continue operation without modification, but new production should transition to RoHS-compliant alternatives.

Q: Are the electrical characteristics of both components equivalent?

A: The PE-51687NL provides specified electrical parameters including 20 mH inductance, 100:1 current ratio, and defined DC resistance values. The Bourns 7202 electrical specifications are not fully detailed in available documentation. Comparison of frequency response, impedance, and transformation characteristics against application requirements is necessary to confirm functional equivalence.

Q: What packaging format is the PE-51687NL supplied in?

A: The PE-51687NL is supplied in tray packaging, suitable for automated assembly processes. The Bourns 7202 packaging format is not specified in available data. Confirm packaging compatibility with existing procurement and assembly workflows.

Q: Is the PC Pin termination style of the PE-51687NL compatible with the original design?

A: The PE-51687NL features PC Pin termination for through-hole mounting. This is standard for current sense transformers in this category. Verify that existing PCB hole patterns and solder pad specifications accommodate PC Pin termination without modification.