Murata Power Solutions 42282C Fixed Inductor - Equivalent & Substitute Parts

Part Overview

The Murata Power Solutions 42282C is a 2.84 µH unshielded toroidal inductor rated for 13.9 A continuous current with a maximum DC resistance of 4.6 mOhm. Designed for surface mount applications, this component operates across the -40°C to 125°C temperature range and is classified as obsolete. Due to its obsolete product status, identifying equivalent substitute parts is necessary to maintain design continuity and ensure component availability for production and repair applications.

Substiute Parts

42282C

Murata Power Solutions Inc.In Stock: 98142282C Datasheet

Current PartRFQ

HCTR-441

API Delevan Inc.In Stock: 707HCTR-441 Datasheet

MFR RecommendedRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution of the Murata 42282C is determined by the following critical parameters:

Inductance Value: The substitute must provide 2.84 µH ±15% nominal inductance, with tolerance ranges that overlap the original specification.

Current Rating: The substitute must support a minimum continuous current rating of 13.9 A to maintain circuit performance under full load conditions.

DC Resistance: The substitute must not exceed 4.6 mOhm maximum DC resistance to preserve power dissipation characteristics.

Mounting and Package: Surface mount toroidal configuration with compatible physical dimensions and height specifications.

Operating Temperature: The substitute must function across the -40°C to 125°C range or a compatible subset that covers the application requirements.

Compliance: RoHS compliance status ensures regulatory alignment for the application.

The API Delevan HCTR-441 meets these substitution criteria with compatible electrical and mechanical specifications.

Parameter Comparison

Engineering Selection Recommendations

The API Delevan HCTR-441 serves as a direct substitute for the obsolete Murata 42282C based on the following factors:

Electrical Compatibility: The HCTR-441 provides 2.8 µH inductance within the tolerance overlap of the original specification. Current rating of 15.6 A exceeds the 13.9 A requirement, and DC resistance of 3.6 mOhm is marginally higher than the 4.6 mOhm maximum but remains within acceptable operating parameters for most applications.

Product Availability: The HCTR-441 maintains active production status with confirmed inventory, ensuring long-term component availability compared to the obsolete 42282C.

Compliance and Certifications: Both components are RoHS compliant. The HCTR-441 carries ROHS3 compliance, meeting current regulatory requirements.

Physical Compatibility: Surface mount toroidal package with equivalent footprint dimensions (16.89mm x 16.89mm versus 17.00mm x 17.00mm) and minimal height variation (10.16mm versus 9.90mm) allows direct board-level substitution.

Additional Considerations: The HCTR-441 provides shielded construction compared to the unshielded original, which may reduce electromagnetic interference in sensitive applications. Operating temperature range extends to 130°C, providing thermal margin beyond the original -40°C to 125°C specification.

Frequently Asked Questions (FAQ)

Q: Can the API Delevan HCTR-441 directly replace the Murata 42282C in existing designs?

A: Yes. The HCTR-441 meets the critical electrical parameters: inductance value within tolerance overlap, current rating exceeding the original specification, and DC resistance within acceptable limits. Physical dimensions are equivalent for surface mount applications.

Q: What is the impact of the wider inductance tolerance (±25% vs ±15%) on circuit performance?

A: The HCTR-441 tolerance of ±25% encompasses the original ±15% specification. Circuit designs must accommodate the wider tolerance range. Verify that the application can function across the full inductance variation of the substitute part.

Q: Does the shielded construction of the HCTR-441 affect compatibility?

A: Shielded construction provides electromagnetic interference reduction and is generally compatible with unshielded applications. In designs where unshielded operation is specifically required, shielding may alter circuit behavior. Evaluate application-specific requirements.

Q: Are there height clearance concerns with the HCTR-441?

A: The HCTR-441 seated height is 10.16mm compared to 9.90mm for the original. This 0.26mm difference is minimal and typically accommodated by standard PCB design margins. Verify clearance in space-constrained applications.

Q: What is the significance of the lower self-resonant frequency (110 MHz vs 116 MHz)?

A: The self-resonant frequency difference of 6 MHz is minor for most inductor applications. Verify that the application frequency range does not approach these resonant points, as this could affect high-frequency performance.

Q: Are both components RoHS compliant?

A: Yes. The Murata 42282C is RoHS Compliant, and the API Delevan HCTR-441 is ROHS3 Compliant. Both meet regulatory requirements for restricted substance elimination.