SCX147-150 Equivalent & Substitute Parts

Part Overview

The SCX147-150 is an unshielded 2-coil inductor array manufactured by Signal Transformer, designed for surface mount applications. This component features dual inductance configurations: 56.64 µH when coils are connected in series and 15 µH when connected in parallel, with a maximum DC resistance of 24 mOhm in parallel configuration and 96 mOhm in series configuration. The part is classified as obsolete, making identification of active equivalent components essential for ongoing production and design requirements.

Substiute Parts

SCX147-150

Signal TransformerIn Stock: 695SCX147-150 Datasheet

Current PartRFQ

CTX15-4-R

Eaton - Electronics DivisionIn Stock: 1758CTX15-4-R Datasheet

MFR RecommendedRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution of the SCX147-150 is based on the following critical electrical and mechanical parameters:

Electrical Compatibility Criteria:

• Inductance values in both series (56.64 µH) and parallel (15 µH nominal) configurations must be maintained within the specified ±20% tolerance band
• Current ratings must meet or exceed the original specifications: 3 A for parallel configuration and 1.5 A for series configuration
• DC resistance characteristics must not exceed the maximum values: 24 mOhm (parallel) and 96 mOhm (series)
• Dual-coil architecture with identical electrical configuration

Mechanical Compatibility Criteria:

• Surface mount technology with nonstandard package footprint
• Physical dimensions and height must accommodate existing PCB layouts
• Unshielded construction matching the original design

The CTX15-4-R manufactured by Eaton - Electronics Division meets all specified electrical parameters and maintains mechanical compatibility with the SCX147-150, with the distinction of active product status and improved availability.

Parameter Comparison

Engineering Selection Recommendations

The CTX15-4-R is the designated manufacturer-recommended substitute for the SCX147-150. Selection of this alternative is supported by the following factors:

Product Status: The CTX15-4-R maintains active product status with documented availability, whereas the SCX147-150 is classified as obsolete. This ensures long-term supply chain viability and access to technical support.

Compliance Certification: Both components maintain ROHS3 compliance and REACH unaffected status, ensuring regulatory alignment for applications subject to environmental restrictions.

Electrical Equivalence: The CTX15-4-R delivers identical series inductance (56.64 µH), matching current ratings (3 A parallel, 1.5 A series), and equivalent DC resistance specifications. The parallel inductance of 14.16 µH falls within the ±20% tolerance band of the original 15 µH specification, confirming functional compatibility.

Mechanical Accommodation: Dimensional variations between the two components are minimal. The CTX15-4-R exhibits a slightly reduced footprint (0.550" vs. 0.567") and lower profile height (0.250" vs. 0.276"), which may require PCB layout verification but generally presents no substitution barriers for standard surface mount applications.

Frequently Asked Questions (FAQ)

Q: Can the CTX15-4-R be used as a direct replacement for the SCX147-150 without circuit modification?

A: The CTX15-4-R meets all specified electrical parameters within the established tolerance band. The parallel inductance of 14.16 µH is within the ±20% tolerance of the original 15 µH specification. Mechanical dimensions are comparable, though PCB layout verification is recommended due to minor footprint and height differences.

Q: What is the significance of the parallel inductance difference between the two parts?

A: The SCX147-150 specifies 15 µH in parallel configuration, while the CTX15-4-R provides 14.16 µH. This 5.6% variance falls within the ±20% tolerance specification common to both components, confirming electrical compatibility for applications designed to this tolerance level.

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

A: Both the SCX147-150 and CTX15-4-R maintain ROHS3 compliance and REACH unaffected status. The CTX15-4-R provides documented operating temperature range (-40°C ~ 85°C), whereas the original part does not specify this parameter. This additional specification supports broader application compatibility.

Q: How do the packaging differences affect component selection?

A: The SCX147-150 packaging format is not specified in available documentation. The CTX15-4-R is supplied in Tape & Reel (TR) format, which is standard for automated assembly processes. Verify packaging compatibility with your procurement and assembly requirements.

Q: What physical layout considerations apply when substituting these components?

A: The CTX15-4-R footprint is 0.550" x 0.550" compared to the SCX147-150 at 0.567" x 0.567", and the height is reduced from 0.276" to 0.250". These minor dimensional reductions typically present no substitution barriers for standard PCB layouts, but verification of clearance and trace routing is recommended for space-constrained designs.