CTX32T-2R7-R Equivalent & Substitute Parts

Part Overview

The CTX32T-2R7-R is a 2.7 µH unshielded drum core wirewound inductor manufactured by Eaton - Electronics Division, rated for 290 mA continuous current with a maximum DC resistance of 1.1 Ohm. This component is packaged in the 1210 (3225 Metric) surface mount form factor and operates across the temperature range of -25°C to 85°C.

The CTX32T-2R7-R has reached obsolete product status. Identifying equivalent and substitute inductors is necessary to maintain design continuity, ensure supply chain availability, and support ongoing production requirements for applications utilizing this component specification.

Substiute Parts

CTX32T-2R7-R

Eaton - Electronics DivisionIn Stock: 842CTX32T-2R7-R Datasheet

Current PartRFQ

1210-272J

API Delevan Inc.In Stock: 11621210-272J Datasheet

SimilarRFQ

CM322522-2R7JL

Bourns Inc.In Stock: 4415CM322522-2R7JL Datasheet

SimilarRFQ

CM322522-2R7KL

Bourns Inc.In Stock: 6111CM322522-2R7KL Datasheet

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Key Parameters

Substitute Part Grouping Explanation

Substitute inductors for the CTX32T-2R7-R are selected based on the following critical parameters:

Mandatory Matching Criteria:

• Inductance value: 2.7 µH
• Package / Case: 1210 (3225 Metric) surface mount form factor
• Shielding configuration: Unshielded
• DC Resistance: 1.1 Ohm maximum
• Mounting type: Surface Mount

Allowable Variation Parameters:

• Current Rating: Substitute parts must equal or exceed the 290 mA requirement
• Tolerance: Substitute parts may have tighter or equivalent tolerance specifications
• Operating Temperature Range: Substitute parts may support equal or extended temperature ranges
• Q Factor and Self Resonant Frequency: Substitute parts must maintain electrical performance within acceptable RF characteristics

The substitute parts identified below satisfy these criteria while offering improved product status, enhanced compliance certifications, or superior current handling capabilities.

Parameter Comparison

Engineering Selection Recommendations

1210-272J (API Delevan Inc.)

The 1210-272J is an active product offering superior current handling at 411 mA, exceeding the CTX32T-2R7-R requirement of 290 mA. This part maintains the standard 1210 (3225 Metric) package form factor and delivers tighter inductance tolerance at ±5%. The extended operating temperature range of -55°C to 125°C provides broader environmental coverage. However, this part is RoHS non-compliant and should be selected only when RoHS compliance is not a design requirement.

CM322522-2R7JL (Bourns Inc.)

The CM322522-2R7JL is an active product with ROHS3 compliance certification. This part maintains the same physical dimensions and electrical characteristics as the CTX32T-2R7-R, including identical Q factor and self-resonant frequency measurements. The ±5% inductance tolerance provides improved precision. The current rating of 180 mA is lower than the original specification and requires verification that application current demands do not exceed this limit. The extended operating temperature range of -40°C to 125°C supports broader thermal environments.

CM322522-2R7KL (Bourns Inc.)

The CM322522-2R7KL is an active product with ROHS3 compliance certification. This part is electrically and physically identical to the CM322522-2R7JL, with the exception of inductance tolerance specified at ±10%. The current rating of 180 mA requires the same verification as the CM322522-2R7JL variant. This part is suitable for applications where the ±10% tolerance specification is acceptable and RoHS3 compliance is required.

Frequently Asked Questions (FAQ)

Q: Can the 1210-272J directly replace the CTX32T-2R7-R in all applications?

A: The 1210-272J maintains the same 1210 package form factor, inductance value, and DC resistance as the CTX32T-2R7-R. The higher current rating of 411 mA provides additional margin above the original 290 mA specification. However, RoHS compliance status differs. Verify that RoHS non-compliance is acceptable for your application before selection.

Q: Why do the Bourns CM322522 parts show lower current ratings than the original CTX32T-2R7-R?

A: The CM322522-2R7JL and CM322522-2R7KL are rated for 180 mA continuous current, which is lower than the CTX32T-2R7-R specification of 290 mA. These parts are suitable only for applications where the actual circuit current requirement does not exceed 180 mA. Verify your application's current demand before selecting these alternatives.

Q: What is the difference between CM322522-2R7JL and CM322522-2R7KL?

A: Both parts are manufactured by Bourns Inc. and share identical electrical performance, physical dimensions, and operating temperature ranges. The primary difference is inductance tolerance: the CM322522-2R7JL specifies ±5% tolerance, while the CM322522-2R7KL specifies ±10% tolerance. Select based on your circuit's tolerance requirements.

Q: Are the Bourns CM322522 parts available in standard 1210 package?

A: The Bourns CM322522-2R7JL and CM322522-2R7KL are specified with nonstandard package designations, though their physical dimensions (0.126" L x 0.098" W, 3.20mm x 2.50mm) match the 1210 (3225 Metric) form factor. Verify mechanical compatibility with your PCB layout and assembly equipment before production implementation.

Q: Which substitute part offers the best compliance certifications?

A: Both Bourns parts (CM322522-2R7JL and CM322522-2R7KL) carry ROHS3 compliance certification. The API Delevan 1210-272J is RoHS non-compliant. Select the Bourns alternatives if RoHS3 compliance is a design requirement.

Q: Can I use these substitutes in high-temperature applications?

A: The 1210-272J supports operation to 125°C, and both Bourns CM322522 variants support operation to 125°C. These extended ranges exceed the original CTX32T-2R7-R specification of 85°C maximum. All three substitutes are suitable for applications requiring operation above 85°C, provided current requirements are met.