CTX5-4 Equivalent & Substitute Parts Reference

Part Overview

The CTX5-4 is an unshielded 2-coil inductor array manufactured by Eaton - Electronics Division in the OCTA-PAC® series. This surface mount component provides dual inductance configurations: 19.6 µH in series connection and 4.9 µH in parallel connection, with a maximum DC resistance of 14 mOhm in parallel mode and 56 mOhm in series mode. The CTX5-4 is classified as obsolete product status. Identification of equivalent and substitute parts is necessary to support ongoing production requirements, design revisions, and supply chain continuity for applications utilizing this inductor array specification.

Substiute Parts

CTX5-4

Eaton - Electronics DivisionIn Stock: 1642CTX5-4 Datasheet

Current PartRFQ

CTX5-4-R

Eaton - Electronics DivisionIn Stock: 1150CTX5-4-R Datasheet

DirectRFQ

4448-110M

API Delevan Inc.In Stock: 12114448-110M Datasheet

SimilarRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitute parts for the CTX5-4 are classified into two categories based on substitution criteria:

Direct Equivalent (Same Manufacturer): CTX5-4-R is a direct equivalent manufactured by Eaton - Electronics Division. This substitute maintains identical electrical specifications across all critical parameters: 4.9 µH parallel inductance, 19.6 µH series inductance, 14 mOhm maximum parallel DCR, 56 mOhm maximum series DCR, 4.4 A parallel current rating, and 2.2 A series current rating. The primary distinction is product status (Active versus Obsolete) and packaging format (Tape & Reel versus standard packaging). RoHS compliance status differs, with CTX5-4-R meeting ROHS3 requirements.

Similar Substitute (Cross-Manufacturer): 4448-110M manufactured by API Delevan Inc. operates within the allowed parameter tolerance band. This substitute exhibits inductance values of 5 µH (parallel) and 20 µH (series), representing a +2% deviation from the CTX5-4 specification within the ±20% tolerance window. DC resistance, current ratings, and shielding characteristics remain equivalent. Operating temperature range extends to -55°C to 125°C, providing broader environmental coverage. Physical dimensions vary slightly (0.530" x 0.530" x 0.310"), and MSL rating differs at 5A (24 Hours).

Substitution logic is based strictly on: coil count, inductance values within tolerance, DC resistance specifications, current ratings, shielding type, mounting method, and operating temperature compatibility.

Parameter Comparison

Engineering Selection Recommendations

CTX5-4-R Selection Criteria: CTX5-4-R is the primary substitute for CTX5-4 applications. This part maintains identical electrical and mechanical specifications while offering Active product status, ensuring long-term availability and supply chain stability. CTX5-4-R is ROHS3 compliant, meeting current regulatory requirements for new designs and manufacturing processes. Selection of CTX5-4-R is appropriate for direct replacement in existing CTX5-4 applications without circuit redesign. Tape & Reel packaging format supports automated assembly processes.

4448-110M Selection Criteria: 4448-110M serves as an alternative substitute when CTX5-4-R availability is constrained. This part operates within the ±20% inductance tolerance specification, with parallel inductance of 5 µH (versus 4.9 µH) and series inductance of 20 µH (versus 19.6 µH). DC resistance and current ratings remain equivalent. The extended operating temperature range (-55°C to 125°C) provides environmental flexibility for applications requiring broader thermal performance. Physical dimension variations (13.46mm x 13.46mm x 7.87mm) require PCB layout verification to confirm mechanical fit. MSL rating of 5A (24 Hours) necessitates controlled moisture handling during storage and assembly compared to the unlimited MSL of the primary part.

Selection between CTX5-4-R and 4448-110M depends on availability, regulatory compliance requirements, thermal operating range needs, and PCB layout constraints.

Frequently Asked Questions (FAQ)

Q: Can CTX5-4-R be used as a direct replacement for CTX5-4 without circuit modification?

A: Yes. CTX5-4-R maintains identical inductance values (4.9 µH parallel, 19.6 µH series), DC resistance specifications (14 mOhm parallel, 56 mOhm series), current ratings (4.4 A parallel, 2.2 A series), and operating temperature range (-40°C to 85°C). Physical dimensions are identical (13.97mm x 13.97mm x 6.35mm). No circuit redesign is required.

Q: What are the inductance tolerance implications when substituting with 4448-110M?

A: Both CTX5-4 and 4448-110M carry ±20% inductance tolerance. The 4448-110M parallel inductance of 5 µH represents a +2% deviation from the CTX5-4 specification of 4.9 µH. The series inductance of 20 µH represents a +2% deviation from 19.6 µH. Both values fall within the specified tolerance band and are electrically equivalent for applications designed to the ±20% tolerance specification.

Q: Are there packaging format differences between substitute parts?

A: CTX5-4 is supplied in standard packaging format. CTX5-4-R and 4448-110M are supplied in Tape & Reel (TR) format, which is standard for automated surface mount assembly. If manual assembly or non-standard handling is required, packaging format conversion may be necessary.

Q: What is the impact of different MSL ratings on component handling?

A: CTX5-4 and CTX5-4-R carry MSL 1 (Unlimited), indicating no moisture sensitivity restrictions. 4448-110M carries MSL 5A (24 Hours), requiring controlled moisture exposure during storage and assembly. Components with MSL 5A must be stored in dry conditions and used within 24 hours of package opening. This affects supply chain logistics and assembly scheduling.

Q: Does RoHS compliance status affect substitution decisions?

A: CTX5-4-R is ROHS3 compliant, while CTX5-4 and 4448-110M are RoHS non-compliant. For new designs or manufacturing processes subject to RoHS regulations, CTX5-4-R is the appropriate selection. For legacy systems or applications without RoHS requirements, all three parts are functionally equivalent.

Q: How do operating temperature ranges compare across substitute parts?

A: CTX5-4 and CTX5-4-R operate from -40°C to 85°C. 4448-110M operates from -55°C to 125°C, providing extended low-temperature and high-temperature performance. Selection of 4448-110M is appropriate for applications requiring operation beyond the -40°C to 85°C range.

Q: Are physical dimension differences between CTX5-4 and 4448-110M significant?

A: CTX5-4 dimensions are 13.97mm x 13.97mm x 6.35mm height. 4448-110M dimensions are 13.46mm x 13.46mm x 7.87mm height. The length and width are slightly smaller; the height is greater. PCB layout and component placement must be verified to confirm mechanical fit and clearance compatibility before substitution.