CTX50-4P Equivalent & Substitute Parts Reference

Part Overview

The CTX50-4P is an unshielded 2-coil inductor array manufactured by Eaton - Electronics Division, part of the Econo-Pac™ series. This surface mount component provides dual inductance configurations: 195.2 µH in series connection and 48.8 µH in parallel connection, with a maximum parallel current rating of 1.2 A. The CTX50-4P is classified as obsolete product status. Identifying equivalent and substitute parts is necessary to maintain design continuity, ensure supply chain availability, and support ongoing production requirements for legacy systems utilizing this component.

Substiute Parts

CTX50-4P

Eaton - Electronics DivisionIn Stock: 1702CTX50-4P Datasheet

Current PartRFQ

CTX50-4P-R

Eaton - Electronics DivisionIn Stock: 2102CTX50-4P-R Datasheet

DirectRFQ

4448-24L

API Delevan Inc.In Stock: 9854448-24L Datasheet

SimilarRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitute parts for the CTX50-4P are identified based on strict electrical and mechanical parameter compatibility. The substitution logic is structured as follows:

Direct Manufacturer Substitute (Same Manufacturer): The CTX50-4P-R is manufactured by Eaton - Electronics Division and maintains identical electrical specifications: 48.8 µH parallel inductance, 195.2 µH series inductance, 1.2 A parallel current rating, and 600 mA series current rating. The primary distinction is packaging format (Tape & Reel versus bulk) and product status (Active versus Obsolete). This part is electrically and mechanically interchangeable.

Similar Manufacturer Substitute (Cross-Manufacturer): The 4448-24L, manufactured by API Delevan Inc., provides comparable electrical performance with minor parameter variations. Parallel inductance is 50 µH (versus 48.8 µH), series inductance is 200 µH (versus 195.2 µH), and tolerance is ±15% (versus ±20%). Current ratings and DC resistance values remain within acceptable equivalence. Physical dimensions differ slightly: 0.530" L x 0.530" W (13.46mm x 13.46mm) versus 0.550" L x 0.550" W (13.97mm x 13.97mm), and height is 0.310" (7.87mm) versus 0.250" (6.35mm). Operating temperature range extends to -55°C ~ 125°C.

Key Parameters Determining Substitution:

• Dual-coil configuration (2 coils required)
• Parallel inductance within ±5% tolerance band
• Series inductance within ±5% tolerance band
• Current ratings meeting or exceeding application requirements
• Unshielded construction
• Surface mount technology
• Nonstandard package compatibility with PCB footprint

Parameter Comparison

Engineering Selection Recommendations

CTX50-4P-R Selection Criteria: The CTX50-4P-R is the primary recommended substitute for the obsolete CTX50-4P. Both components are manufactured by Eaton - Electronics Division and maintain identical electrical and mechanical specifications. The CTX50-4P-R carries Active product status, ensuring ongoing availability and supply chain support. The CTX50-4P-R achieves ROHS3 compliance, meeting current environmental and regulatory requirements. Packaging is supplied in Tape & Reel format, suitable for automated assembly processes. Moisture sensitivity level remains at MSL 1 (Unlimited), matching the original component. Selection of CTX50-4P-R eliminates obsolescence risk while maintaining full electrical and mechanical compatibility.

4448-24L Selection Criteria: The 4448-24L from API Delevan Inc. is suitable for applications where minor inductance variations are acceptable within circuit design tolerances. Parallel inductance of 50 µH represents a 2.5% increase from the 48.8 µH specification; series inductance of 200 µH represents a 2.5% increase from the 195.2 µH specification. The tighter tolerance of ±15% provides improved consistency compared to the ±20% tolerance of the CTX50-4P. Current ratings and DC resistance values remain equivalent. The extended operating temperature range of -55°C ~ 125°C provides thermal margin beyond the original -40°C ~ 85°C specification. Physical dimensions differ slightly; PCB footprint compatibility must be confirmed prior to selection. The 4448-24L carries Active product status. Moisture sensitivity level is MSL 5A (24 Hours), requiring controlled storage and handling procedures. Selection of 4448-24L is appropriate for new designs or applications where the dimensional and thermal specifications provide design advantages.

Frequently Asked Questions (FAQ)

Q: Can the CTX50-4P-R be used as a direct replacement for the CTX50-4P in existing assemblies?

A: Yes. The CTX50-4P-R is electrically and mechanically identical to the CTX50-4P. Both components provide 48.8 µH parallel inductance, 195.2 µH series inductance, 1.2 A parallel current rating, and 600 mA series current rating. Physical dimensions, DC resistance, and operating temperature range are identical. The primary difference is product status (Active versus Obsolete) and packaging format (Tape & Reel versus bulk). No circuit modifications are required.

Q: What are the inductance differences between the CTX50-4P and the 4448-24L?

A: The 4448-24L provides 50 µH parallel inductance compared to 48.8 µH for the CTX50-4P, representing a 2.5% increase. Series inductance is 200 µH compared to 195.2 µH, also a 2.5% increase. These variations fall within typical circuit design tolerances for inductor applications. Compatibility depends on specific circuit requirements and tolerance specifications.

Q: Are there physical footprint differences between these parts?

A: Yes. The CTX50-4P and CTX50-4P-R share identical dimensions: 0.550" L x 0.550" W (13.97mm x 13.97mm) with 0.250" (6.35mm) height. The 4448-24L has slightly smaller length and width dimensions of 0.530" L x 0.530" W (13.46mm x 13.46mm) but greater height of 0.310" (7.87mm). PCB footprint compatibility must be confirmed before selecting the 4448-24L as a substitute.

Q: What is the difference in RoHS compliance between these parts?

A: The CTX50-4P is RoHS non-compliant. The CTX50-4P-R is ROHS3 compliant, meeting current environmental regulations. The 4448-24L is RoHS non-compliant. For applications requiring RoHS compliance, the CTX50-4P-R is the appropriate selection.

Q: What are the moisture sensitivity requirements for each part?

A: The CTX50-4P and CTX50-4P-R both carry MSL 1 (Unlimited), indicating no moisture sensitivity restrictions. The 4448-24L carries MSL 5A (24 Hours), requiring controlled storage at specified humidity levels and limiting floor life to 24 hours after package opening. Handling procedures must account for this increased moisture sensitivity.

Q: What is the operating temperature range for each component?

A: The CTX50-4P and CTX50-4P-R operate from -40°C to 85°C. The 4448-24L operates from -55°C to 125°C, providing extended thermal range. Selection of the 4448-24L is appropriate for applications requiring operation beyond the standard temperature range.

Q: Are current ratings identical across all three parts?

A: Yes. All three components provide 1.2 A maximum current rating in parallel configuration and 600 mA maximum current rating in series configuration. DC resistance values are equivalent: 201 mOhm maximum in parallel configuration and 805 mOhm maximum in series configuration for the CTX50-4P and CTX50-4P-R; 202 mOhm and 808 mOhm respectively for the 4448-24L.

Q: Which part should be selected for new product designs?

A: The CTX50-4P-R is recommended for new designs requiring Eaton components with ROHS3 compliance and Active product status. The 4448-24L is suitable for designs where the extended operating temperature range, improved tolerance specification, or alternative manufacturer sourcing provides design advantages. Both parts carry Active product status and ensure long-term supply availability.