CTX02-12236 Equivalent & Substitute Parts

Part Overview

The CTX02-12236 is a 500 µH unshielded toroidal inductor manufactured by Eaton - Electronics Division, rated for 2.6 A continuous current with a maximum DC resistance of 200 mOhm. This component is designed for through-hole mounting in radial, horizontal orientation and operates across the temperature range of -20°C to 105°C.

The CTX02-12236 is classified as obsolete. Identifying equivalent and substitute parts is necessary to maintain design continuity, ensure supply chain availability, and support ongoing production or repair requirements for systems utilizing this inductor.

Substiute Parts

CTX02-12236

Eaton - Electronics DivisionIn Stock: 1231CTX02-12236 Datasheet

Current PartRFQ

PTHF500R-59H

API Delevan Inc.In Stock: 1103PTHF500R-59H Datasheet

SimilarRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitute parts for the CTX02-12236 must satisfy the following mandatory criteria:

Inductance Value: Substitute inductors must provide exactly 500 µH to maintain circuit performance and frequency response characteristics.

Current Rating: Substitute inductors must support a minimum continuous current rating of 2.6 A to ensure safe operation without thermal stress or saturation.

Mounting Configuration: Substitute inductors must be through-hole mounted components with radial, horizontal (open) package orientation to ensure mechanical and electrical compatibility with existing PCB designs.

DC Resistance: Substitute inductors must maintain DC resistance at or below 200 mOhm maximum to preserve power efficiency and thermal performance within the original design specifications.

Core Type and Shielding: While the original part uses an iron powder unshielded core, substitute parts may employ alternative core materials (such as molybdenum permalloy) and shielding configurations provided all other electrical parameters remain within acceptable tolerances.

Temperature Range: Substitute inductors must operate across the full temperature range of -20°C to 105°C or a range that encompasses this specification.

Parameter Comparison

Engineering Selection Recommendations

PTHF500R-59H as Primary Substitute:

The PTHF500R-59H from API Delevan Inc. satisfies all mandatory electrical and mechanical substitution criteria for the CTX02-12236. Both components provide identical inductance (500 µH) and current rating (2.6 A) with through-hole radial, horizontal mounting compatibility.

The PTHF500R-59H offers superior DC resistance performance at 160 mOhm maximum compared to the 200 mOhm maximum of the original part, resulting in lower power dissipation and improved thermal efficiency.

The substitute part features a molybdenum permalloy core with shielding, which differs from the original iron powder unshielded design. This configuration provides enhanced frequency stability and reduced electromagnetic interference characteristics.

The PTHF500R-59H is classified as active product status with ROHS3 compliance and REACH unaffected designation, ensuring long-term availability and regulatory alignment for new designs and ongoing production.

Physical dimensions show the substitute part is slightly smaller in diameter (1.150" versus 1.224") and significantly smaller in height (0.475" versus 0.750"), which may provide PCB layout advantages in space-constrained applications.

Frequently Asked Questions (FAQ)

Q: Can the PTHF500R-59H directly replace the CTX02-12236 in existing designs?

A: Yes. Both components provide 500 µH inductance, 2.6 A current rating, and identical through-hole radial, horizontal mounting configuration. The substitute part's superior DC resistance (160 mOhm versus 200 mOhm) and active product status make it suitable for direct substitution. The smaller physical dimensions may require PCB layout verification to confirm clearance compatibility.

Q: What is the significance of the different core materials?

A: The CTX02-12236 uses iron powder core material, while the PTHF500R-59H uses molybdenum permalloy (MPP) core material. Both materials support the required inductance and current ratings. The MPP core in the substitute part provides improved frequency stability and self-resonant frequency characteristics (800 kHz specified), which may benefit high-frequency circuit applications.

Q: Does the shielding difference affect circuit performance?

A: The CTX02-12236 is unshielded, while the PTHF500R-59H is shielded. Shielding reduces electromagnetic interference emission and susceptibility. In applications where EMI performance is critical, the shielded substitute may provide superior performance. In applications where shielding is not required, both configurations are functionally equivalent for the specified inductance and current parameters.

Q: Are there any temperature range limitations?

A: The CTX02-12236 specifies operating temperature range of -20°C to 105°C. The PTHF500R-59H does not specify an operating temperature range in the provided data. Verify the substitute part's temperature specifications with the manufacturer to confirm compatibility with your application's thermal requirements.

Q: What is the impact of different inductance test frequencies?

A: The CTX02-12236 inductance is tested at 100 kHz, while the PTHF500R-59H is tested at 1 kHz. Both components are rated for 500 µH inductance. The different test frequencies reflect different measurement methodologies but do not affect the core inductance value or circuit compatibility at the specified operating frequencies.

Q: Is the ±10% tolerance of the substitute part acceptable?

A: The CTX02-12236 does not specify inductance tolerance in the provided data. The PTHF500R-59H specifies ±10% tolerance. Verify that ±10% inductance variation is acceptable for your circuit design. If tighter tolerance is required, confirm tolerance specifications with the manufacturer before final component selection.

Q: What are the compliance and regulatory considerations?

A: The PTHF500R-59H is ROHS3 compliant and REACH unaffected, meeting current environmental and regulatory requirements. The CTX02-12236 compliance status is not specified in the provided data. For new designs and ongoing production, the substitute part's active status and regulatory compliance provide assurance of long-term availability and regulatory alignment.