42183C Equivalent & Substitute Parts

Part Overview

The Murata Power Solutions Inc. 42183C is a 17.6 µH unshielded toroidal inductor rated for 10.9 A continuous current with a maximum DC resistance of 11.6 mOhm. This surface mount component operates across the temperature range of -40°C to 125°C and is part of the 4200 series. The product is currently obsolete, making identification of suitable substitute components necessary for ongoing design support and procurement.

Substiute Parts

42183C

Murata Power Solutions Inc.In Stock: 95342183C Datasheet

Current PartRFQ

HCTR-682

API Delevan Inc.In Stock: 1041HCTR-682 Datasheet

MFR RecommendedRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution of the 42183C is determined by the following critical parameters:

• Inductance Value: Must be 17.6 µH to maintain circuit functionality
• Current Rating: Substitute must support minimum 10.9 A continuous current
• DC Resistance: Must not exceed 11.6 mOhm to preserve power efficiency characteristics
• Operating Temperature Range: Must encompass or exceed -40°C to 125°C
• Mounting Type: Must be surface mount compatible
• Self Resonant Frequency: Must be 24 MHz or higher to avoid resonance interference

The API Delevan Inc. HCTR-682 meets these core substitution criteria with equivalent inductance, compatible current handling, and matching thermal and frequency specifications. Differences in shielding configuration and tolerance do not preclude substitution when electromagnetic isolation is not a circuit requirement.

Parameter Comparison

Engineering Selection Recommendations

The HCTR-682 serves as a functional substitute for the obsolete 42183C based on the following factors:

Product Status: The 42183C is obsolete, while the HCTR-682 is active and available in production quantities, ensuring long-term procurement viability.

Compliance: Both components are RoHS compliant and REACH unaffected, meeting regulatory requirements for current manufacturing standards.

Electrical Equivalence: Inductance and self-resonant frequency are identical. The HCTR-682 operates within acceptable parameter ranges for most applications, though the reduced current rating (9.32 A versus 10.9 A) and slightly elevated DC resistance (12.3 mOhm versus 11.6 mOhm) require circuit-level verification.

Thermal Performance: The HCTR-682 extends the upper operating temperature to 130°C, providing additional thermal margin compared to the original specification.

Shielding Consideration: The HCTR-682 is shielded, whereas the 42183C is unshielded. In applications where electromagnetic isolation is not required, this difference does not impact substitution suitability. In noise-sensitive circuits, the shielded design may provide additional benefit.

Frequently Asked Questions (FAQ)

Q: Can the HCTR-682 directly replace the 42183C in all applications?

A: Direct substitution is valid when the circuit operates at or below 9.32 A continuous current and does not require the unshielded configuration of the original part. The slightly higher DC resistance and wider inductance tolerance must be evaluated against circuit performance margins.

Q: What is the impact of the lower current rating on the HCTR-682?

A: The HCTR-682 is rated for 9.32 A versus the 42183C's 10.9 A. Applications operating above 9.32 A require alternative components or circuit redesign. For applications within the 9.32 A limit, the substitute is suitable.

Q: Does the shielded design of the HCTR-682 affect compatibility?

A: Shielding provides electromagnetic containment and reduces radiated emissions. In applications where the unshielded characteristic of the 42183C was intentional, the shielded HCTR-682 may alter circuit behavior. In most general-purpose applications, shielding is beneficial or neutral.

Q: Are there packaging or dimensional differences?

A: Both components use nonstandard surface mount packages with similar footprints. The HCTR-682 dimensions are 24.00 mm × 23.88 mm × 10.16 mm (height), compared to the 42183C at 23.87 mm × 23.87 mm × 9.90 mm. Verify PCB layout compatibility before implementation.

Q: What compliance certifications apply to the HCTR-682?

A: The HCTR-682 is ROHS3 compliant and REACH unaffected, meeting current environmental and regulatory standards equivalent to or exceeding the original 42183C specifications.