CTX20-1 Equivalent & Substitute Parts Reference

Part Overview

The CTX20-1 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: 78.4 µH when coils are connected in series and 19.6 µH when connected in parallel. The part is classified as obsolete, making identification of active equivalent alternatives essential for ongoing production and design continuity.

Substiute Parts

CTX20-1

Eaton - Electronics DivisionIn Stock: 1146CTX20-1 Datasheet

Current PartRFQ

CTX20-1-R

Eaton - Electronics DivisionIn Stock: 2750CTX20-1-R Datasheet

DirectRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution of the CTX20-1 is determined by strict equivalence across the following critical parameters:

Electrical Equivalence Criteria:

• Inductance values in both parallel (19.6 µH) and series (78.4 µH) configurations
• Inductance tolerance (±20%)
• Current ratings for both configurations (1 A parallel, 500 mA series)
• DC resistance specifications (146 mOhm max parallel, 583 mOhm max series)

Mechanical Equivalence Criteria:

• Number of coils (2)
• Shielding type (unshielded)
• Mounting type (surface mount)
• Physical dimensions (0.450" × 0.450" × 0.165")
• Package case classification (nonstandard)

Environmental Criteria:

• Operating temperature range (-40°C to 85°C)
• Moisture sensitivity level (MSL 1)

The CTX20-1-R meets all these criteria and is therefore a direct electrical and mechanical substitute.

Parameter Comparison

Engineering Selection Recommendations

The CTX20-1-R is the direct active equivalent for the obsolete CTX20-1. Selection of CTX20-1-R is based on the following engineering factors:

Product Status: The CTX20-1 is classified as obsolete. The CTX20-1-R maintains active product status with Eaton - Electronics Division, ensuring continued availability and supply chain reliability.

Regulatory Compliance: The CTX20-1-R is ROHS3 compliant, whereas the original CTX20-1 is non-compliant. For applications subject to RoHS regulations, CTX20-1-R is the required selection.

Electrical and Mechanical Equivalence: All electrical parameters (inductance values, current ratings, DC resistance) and mechanical specifications (dimensions, mounting type, coil configuration) are identical between the two parts.

Packaging Consideration: The CTX20-1-R is supplied in Tape & Reel (TR) packaging, which differs from the original bulk packaging. This packaging format is standard for high-volume surface-mount assembly operations.

Inventory and Supply: CTX20-1-R has 2,725 pieces in stock, providing immediate availability for production requirements.

Frequently Asked Questions (FAQ)

Q: Can CTX20-1-R be used as a direct replacement for CTX20-1 in existing designs?

A: Yes. The CTX20-1-R is electrically and mechanically equivalent to the CTX20-1. All inductance values, current ratings, DC resistance specifications, physical dimensions, and operating temperature ranges are identical. The parts are interchangeable at the component level.

Q: What is the difference between the two part numbers?

A: The primary differences are product status and packaging. The CTX20-1 is obsolete and supplied in bulk packaging. The CTX20-1-R is an active product supplied in Tape & Reel (TR) format and is ROHS3 compliant. The "-R" designation indicates the reel packaging format.

Q: Does the Tape & Reel packaging affect circuit performance?

A: No. Tape & Reel packaging is a supply format used for automated surface-mount assembly. It does not affect the electrical or mechanical performance of the component. The inductor itself is identical.

Q: Is CTX20-1-R suitable for applications requiring RoHS compliance?

A: Yes. The CTX20-1-R is ROHS3 compliant. The original CTX20-1 is not RoHS compliant. For designs subject to RoHS regulations, CTX20-1-R is the appropriate selection.

Q: Are there any differences in the coil configuration or inductance values?

A: No. Both parts provide identical inductance values in parallel (19.6 µH) and series (78.4 µH) configurations. The number of coils (2), tolerance (±20%), and current ratings are identical.

Q: What is the operating temperature range for CTX20-1-R?

A: The operating temperature range is -40°C to 85°C, identical to the CTX20-1.

Q: Can CTX20-1-R handle the same current levels as CTX20-1?

A: Yes. The current ratings are identical: 1 A for parallel configuration and 500 mA for series configuration. DC resistance specifications are also identical (146 mOhm max parallel, 583 mOhm max series).