CTX32CT-150-R Equivalent & Substitute Parts Reference

Part Overview

The CTX32CT-150-R is a 15 µH unshielded drum core wirewound inductor manufactured by Eaton - Electronics Division. This surface mount component is rated for 250 mA continuous current with a maximum DC resistance of 740 mOhm, housed in a 1210 (3225 Metric) package. The part is classified as obsolete, necessitating identification of active equivalent alternatives for ongoing design support and procurement continuity.

Substiute Parts

CTX32CT-150-R

Eaton - Electronics DivisionIn Stock: 910CTX32CT-150-R Datasheet

Current PartRFQ

CM322522-150JL

Bourns Inc.In Stock: 1167CM322522-150JL Datasheet

SimilarRFQ

CM322522-150KL

Bourns Inc.In Stock: 20902CM322522-150KL Datasheet

SimilarRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution of the CTX32CT-150-R is determined by the following critical electrical and mechanical parameters:

Mandatory Matching Parameters:

• Inductance value: 15 µH
• Physical package dimensions: 0.126" L x 0.098" W (3.20mm x 2.50mm)
• Height - Seated (Max): 0.087" (2.20mm)
• Mounting type: Surface Mount
• Core configuration: Drum Core, Wirewound
• Shielding: Unshielded
• Inductance test frequency: 2.52 MHz

Allowable Variation Parameters:

• Current rating: Substitute must support minimum 250 mA (equal or greater)
• DC resistance: Substitute must not exceed 740 mOhm maximum
• Tolerance: ±5% or ±10% acceptable
• Operating temperature range: Substitute must cover minimum -25°C ~ 85°C
• Core material: Ceramic or Ferrite acceptable for this application class

The identified substitute parts (CM322522-150JL and CM322522-150KL) match all mandatory parameters. However, both substitutes have a current rating of 120 mA, which is below the original 250 mA specification. This represents a functional limitation requiring circuit-level evaluation.

Parameter Comparison

Engineering Selection Recommendations

CM322522-150KL (Bourns Inc.) - Preferred Selection

CM322522-150KL is the primary substitute option based on the following criteria:

• Active product status with established supply chain and long-term availability
• ROHS3 compliance and REACH unaffected status meet current regulatory requirements
• Tolerance specification of ±10% matches the original CTX32CT-150-R
• Extended operating temperature range (-40°C ~ 125°C) exceeds original specification
• Higher inventory availability (20,817 Pcs) ensures procurement reliability
• Identical physical dimensions and mounting compatibility
• Improved Q factor (30 @ 2.52MHz vs. 15 @ 2.52MHz) provides superior performance characteristics

CM322522-150JL (Bourns Inc.) - Secondary Selection

CM322522-150JL serves as an alternative with tighter tolerance specification (±5%):

• Active product status with established supply chain
• ROHS3 compliance and REACH unaffected status
• Tighter inductance tolerance may benefit precision-critical applications
• Lower inventory availability (1,060 Pcs) compared to CM322522-150KL
• Identical physical dimensions and mounting compatibility

Critical Limitation - Current Rating:

Both substitute parts are rated for 120 mA maximum continuous current, compared to the original 250 mA specification. Applications requiring the full 250 mA current capacity must conduct circuit-level thermal and performance analysis to determine if the 120 mA rating is acceptable for the intended use case.

Frequently Asked Questions (FAQ)

Q: Can CM322522-150KL and CM322522-150JL be used interchangeably with CTX32CT-150-R?

A: Physical and electrical compatibility exists for inductance value, package dimensions, and mounting type. However, the 120 mA current rating of both Bourns substitutes is significantly lower than the original 250 mA specification. Interchangeability depends on actual circuit current requirements. If circuit current does not exceed 120 mA, substitution is mechanically and electrically compatible.

Q: What is the difference between CM322522-150KL and CM322522-150JL?

A: Both parts are identical except for tolerance specification and packaging format. CM322522-150KL has ±10% tolerance and is supplied in Cut Tape (CT) & Digi-Reel® format with higher inventory (20,817 Pcs). CM322522-150JL has ±5% tolerance and is supplied in Tape & Reel (TR) format with lower inventory (1,060 Pcs). Selection depends on tolerance requirements and packaging preference.

Q: Are the physical dimensions truly identical?

A: Yes. Both substitute parts have identical dimensions: 0.126" L x 0.098" W (3.20mm x 2.50mm) with maximum seated height of 0.087" (2.20mm). PCB layout and assembly compatibility is maintained.

Q: What is the impact of the higher DC resistance in the substitutes?

A: The Bourns substitutes have 2.8 Ohm maximum DC resistance compared to 740 mOhm in the original part. This represents a significant increase in resistive losses. Power dissipation and thermal characteristics will differ substantially. Circuit performance analysis is required to assess impact on system efficiency and temperature rise.

Q: Do the substitutes meet environmental and compliance requirements?

A: Both CM322522-150KL and CM322522-150JL are ROHS3 compliant and REACH unaffected. Moisture sensitivity level is 1 (Unlimited) for all three parts. Both substitutes support the extended operating temperature range of -40°C ~ 125°C, exceeding the original -25°C ~ 85°C specification.

Q: What is the significance of the higher Q factor in the substitutes?

A: The Bourns substitutes have Q @ 2.52MHz of 30 compared to 15 in the original part. Higher Q factor indicates lower losses and better frequency selectivity. This represents an improvement in performance characteristics for RF and filtering applications.

Q: Which substitute should be selected for new designs?

A: CM322522-150KL is recommended for new designs based on active product status, higher inventory availability, matching tolerance specification, and superior performance metrics. CM322522-150JL is suitable if tighter tolerance (±5%) is required for precision applications.