CTX100-2 Equivalent & Substitute Parts

Part Overview

The CTX100-2 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: 397.81 µH in series connection and 99.45 µH in parallel connection, with a maximum DC resistance of 457 mOhm in parallel mode. The CTX100-2 is classified as obsolete, making identification of active equivalent parts essential for ongoing production and design continuity. The primary substitute, CTX100-2-R, maintains identical electrical and mechanical specifications while offering active product status and improved compliance certifications.

Substiute Parts

CTX100-2

Eaton - Electronics DivisionIn Stock: 1921CTX100-2 Datasheet

Current PartRFQ

CTX100-2-R

Eaton - Electronics DivisionIn Stock: 2950CTX100-2-R Datasheet

DirectRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution eligibility for the CTX100-2 inductor array is determined by strict equivalence across the following critical parameters:

Electrical Equivalence Requirements:

• Inductance values in both parallel (99.45 µH) and series (397.81 µH) configurations must match exactly
• DC resistance specifications must not exceed the maximum values: 457 mOhm (parallel) and 1.828 Ohm (series)
• Current ratings must meet or exceed the specified limits: 630 mA (parallel) and 320 mA (series)
• Tolerance band of ±20% must be maintained

Mechanical & Environmental Equivalence Requirements:

• Surface mount package with identical footprint dimensions (11.43mm x 11.43mm x 5.97mm)
• Unshielded configuration
• Operating temperature range of -40°C to 85°C
• Number of coils: 2
• Moisture sensitivity level MSL 1

Packaging Consideration: The CTX100-2 is supplied in standard packaging, while the CTX100-2-R is supplied in Tape & Reel (TR) format. Both formats are mechanically and electrically identical; packaging selection depends on assembly process requirements and volume specifications.

Parameter Comparison

Engineering Selection Recommendations

Primary Recommendation: CTX100-2-R

The CTX100-2-R is the direct active equivalent of the obsolete CTX100-2. Selection of CTX100-2-R is based on the following engineering factors:

1. Product Status Alignment: CTX100-2-R carries active product status, ensuring long-term availability and supply chain continuity. The CTX100-2 is obsolete and subject to inventory depletion.

2. Electrical Equivalence: All electrical parameters are identical, including inductance values, DC resistance specifications, current ratings, and tolerance bands. Direct functional substitution is supported without circuit redesign.

3. Mechanical Compatibility: Footprint, height, and mounting characteristics are identical. PCB layout modifications are not required.

4. Compliance Enhancement: CTX100-2-R meets ROHS3 compliance standards, whereas CTX100-2 is non-compliant. For applications subject to RoHS regulations, CTX100-2-R is the required selection.

5. Packaging Flexibility: CTX100-2-R is supplied in Tape & Reel format, which is standard for automated assembly processes. If bulk or alternative packaging is required, contact the manufacturer for availability.

6. Environmental Specifications: Operating temperature range and moisture sensitivity levels are maintained, supporting equivalent performance across all specified environmental conditions.

Frequently Asked Questions (FAQ)

Q: Can CTX100-2-R be used as a direct replacement for CTX100-2 in existing designs?

A: Yes. CTX100-2-R is electrically and mechanically identical to CTX100-2. All inductance values, current ratings, DC resistance specifications, and physical dimensions match exactly. No circuit modifications or PCB layout changes are required.

Q: What is the difference between CTX100-2 and CTX100-2-R?

A: The primary differences are product status, packaging format, and compliance certifications. CTX100-2 is obsolete and supplied in standard packaging with RoHS non-compliance status. CTX100-2-R is active, supplied in Tape & Reel format, and meets ROHS3 compliance standards. Electrical and mechanical specifications are identical.

Q: Is Tape & Reel packaging compatible with standard pick-and-place assembly equipment?

A: Yes. Tape & Reel (TR) packaging is the standard format for automated surface mount assembly. CTX100-2-R in TR format is compatible with all standard SMD assembly processes.

Q: Does the ±20% inductance tolerance apply to both series and parallel configurations?

A: Yes. The ±20% tolerance band applies to both the 397.81 µH series configuration and the 99.45 µH parallel configuration.

Q: What is the maximum current that can be applied to each coil configuration?

A: Maximum current ratings are 630 mA for parallel configuration and 320 mA for series configuration. Operating current must not exceed these limits to maintain component reliability and prevent thermal stress.

Q: Are there any environmental restrictions on the operating temperature range?

A: No. Both CTX100-2 and CTX100-2-R operate across the full range of -40°C to 85°C without derating. This range covers standard industrial and commercial applications.

Q: What does MSL 1 (Unlimited) moisture sensitivity level mean?

A: MSL 1 indicates the lowest moisture sensitivity classification. Components with MSL 1 have unlimited shelf life and do not require special moisture control during storage or handling, provided standard ESD precautions are observed.

Q: Can CTX100-2-R be used in applications requiring RoHS compliance?

A: Yes. CTX100-2-R meets ROHS3 compliance standards and is suitable for all applications subject to RoHS regulations. CTX100-2 is non-compliant and cannot be used in RoHS-regulated applications.