CTX10-4P Equivalent & Substitute Parts

Part Overview

The CTX10-4P 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: 39.53 µH in series and 9.88 µH in parallel, with a maximum parallel current rating of 2.5 A. The CTX10-4P is classified as obsolete product status, making identification of equivalent and substitute parts essential for ongoing design support, production continuity, and component procurement.

Substiute Parts

CTX10-4P

Eaton - Electronics DivisionIn Stock: 1492CTX10-4P Datasheet

Current PartRFQ

CTX10-4P-R

Eaton - Electronics DivisionIn Stock: 2346CTX10-4P-R Datasheet

DirectRFQ

4448-14L

API Delevan Inc.In Stock: 9794448-14L Datasheet

SimilarRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitute parts for the CTX10-4P are identified based on strict electrical and mechanical parameter compatibility. The substitution logic is organized into two categories:

Direct Manufacturer Substitute (Packaging Variant): The CTX10-4P-R is an identical electrical component from the same manufacturer (Eaton - Electronics Division) and series (Econo-Pac™). It differs only in packaging format (Tape & Reel versus standard packaging) and product status (Active versus Obsolete). All electrical parameters, mechanical dimensions, and performance characteristics are identical. This part is suitable for direct substitution where Tape & Reel packaging is acceptable.

Similar Manufacturer Substitute (Cross-Manufacturer Alternative): The 4448-14L from API Delevan Inc. is classified as a similar substitute based on the following allowed parameters:

• Identical number of coils (2)
• Parallel inductance within tolerance range: 10 µH (versus 9.88 µH, representing a +1.2% variance within the ±20% tolerance specification)
• Series inductance within tolerance range: 40 µH (versus 39.53 µH, representing a +1.2% variance within the ±20% tolerance specification)
• Identical current ratings: 2.5 A parallel, 1.25 A series
• Identical DC resistance specifications: 47 mOhm Max parallel, 188 mOhm Max series (within specification)
• Identical shielding classification (Unshielded)
• Identical mounting type (Surface Mount)
• Identical package classification (Nonstandard)
• Similar physical dimensions with minor variations
• Active product status with extended temperature range

Parameter Comparison

Engineering Selection Recommendations

For Direct Replacement (Identical Electrical Performance): The CTX10-4P-R is the primary recommended substitute. This part maintains 100% electrical and mechanical compatibility with the CTX10-4P while offering the advantage of active product status and ROHS3 compliance. The only difference is packaging format (Tape & Reel). Selection of CTX10-4P-R is appropriate for all applications where the original CTX10-4P was specified, provided that Tape & Reel packaging is compatible with assembly processes.

For Cross-Manufacturer Substitution (Functional Equivalence): The 4448-14L from API Delevan Inc. is suitable for applications where the CTX10-4P cannot be sourced and CTX10-4P-R is unavailable. This part provides functional equivalence based on matching electrical parameters within tolerance specifications. The 4448-14L offers extended operating temperature range (-55°C to 125°C versus -40°C to 85°C) and tighter inductance tolerance (±15% versus ±20%), which may provide performance benefits in certain applications. However, the 4448-14L has higher moisture sensitivity (MSL 5A versus MSL 1) and slightly different physical dimensions (0.530" x 0.530" x 0.310" versus 0.550" x 0.550" x 0.250"), requiring verification of PCB layout compatibility and storage/handling procedures.

Compliance Considerations: The CTX10-4P-R is ROHS3 compliant, making it the preferred choice for applications subject to RoHS regulations. Both the original CTX10-4P and the 4448-14L are RoHS non-compliant and should be evaluated against applicable regulatory requirements.

Frequently Asked Questions (FAQ)

Q: Can CTX10-4P-R be used as a direct replacement for CTX10-4P? A: Yes. The CTX10-4P-R is electrically and mechanically identical to the CTX10-4P. The only difference is packaging format (Tape & Reel). All electrical parameters, inductance values, current ratings, DC resistance, operating temperature range, and physical dimensions are identical. Substitution is valid provided that Tape & Reel packaging is compatible with your assembly process.

Q: What is the difference between the CTX10-4P and CTX10-4P-R? A: The CTX10-4P-R differs from the CTX10-4P in three aspects: (1) Packaging format—CTX10-4P-R is supplied in Tape & Reel format while CTX10-4P uses standard packaging; (2) Product status—CTX10-4P-R is Active while CTX10-4P is Obsolete; (3) RoHS compliance—CTX10-4P-R is ROHS3 compliant while CTX10-4P is RoHS non-compliant. All electrical and mechanical specifications are identical.

Q: Can the 4448-14L be used instead of the CTX10-4P? A: The 4448-14L is a functional equivalent based on matching electrical parameters. The parallel inductance is 10 µH (versus 9.88 µH) and series inductance is 40 µH (versus 39.53 µH), both within the ±20% tolerance specification of the original part. Current ratings, DC resistance, and shielding are identical. However, the 4448-14L has different physical dimensions (0.530" x 0.530" x 0.310" versus 0.550" x 0.550" x 0.250"), higher moisture sensitivity (MSL 5A versus MSL 1), and extended operating temperature range (-55°C to 125°C versus -40°C to 85°C). PCB layout compatibility must be verified before substitution.

Q: What are the key parameters that determine if a part can substitute for the CTX10-4P? A: Substitution compatibility is determined by: (1) Number of coils (must be 2); (2) Inductance values in both parallel and series configurations (must be within tolerance specifications); (3) Current ratings (must meet or exceed 2.5 A parallel and 1.25 A series); (4) DC resistance specifications (must not exceed 47 mOhm parallel and 187 mOhm series); (5) Shielding type (must be unshielded); (6) Mounting type (must be surface mount); (7) Operating temperature range (must cover the application's temperature requirements); (8) Physical dimensions (must fit PCB layout constraints).

Q: Why does the 4448-14L have different physical dimensions? A: The 4448-14L is manufactured by a different supplier (API Delevan Inc.) using different design and manufacturing processes. While the electrical performance is functionally equivalent, the physical package dimensions differ slightly: length and width are 0.530" x 0.530" (versus 0.550" x 0.550") and height is 0.310" (versus 0.250"). These dimensional differences require verification against PCB layout and assembly clearance requirements before substitution.

Q: What is the significance of the MSL (Moisture Sensitivity Level) difference between CTX10-4P and 4448-14L? A: The CTX10-4P has MSL 1 (Unlimited), meaning it has no moisture sensitivity restrictions and can be stored indefinitely without special handling. The 4448-14L has MSL 5A (24 Hours), requiring that the component be used within 24 hours of opening the moisture barrier bag. This difference affects component storage, handling procedures, and supply chain management. MSL 5A components require more stringent moisture control during storage and assembly.

Q: Is the CTX10-4P-R suitable for RoHS-compliant applications? A: Yes. The CTX10-4P-R is ROHS3 compliant, making it suitable for applications subject to RoHS regulations. The original CTX10-4P is RoHS non-compliant. If RoHS compliance is a requirement, the CTX10-4P-R is the appropriate choice.

Q: What is the tolerance difference between CTX10-4P and 4448-14L? A: The CTX10-4P has an inductance tolerance of ±20%, while the 4448-14L has a tighter tolerance of ±15%. The tighter tolerance of the 4448-14L may provide improved consistency in inductance values across production batches, which may be beneficial for applications with strict inductance specifications.