PD105R-184K Equivalent & Substitute Parts Reference

Part Overview

The PD105R-184K is a 180 µH unshielded drum core wirewound inductor manufactured by API Delevan Inc., rated for 720 mA continuous current with a maximum DC resistance of 560 mOhm. This component is classified as obsolete, making identification of active equivalent parts essential for ongoing design support and procurement continuity. The part operates across the temperature range of -55°C to 125°C and complies with RoHS3 and REACH requirements. Due to its obsolete status, sourcing alternatives from active product lines is necessary for new designs and production continuity.

Substiute Parts

PD105R-184K

API Delevan Inc.In Stock: 1038PD105R-184K Datasheet

Current PartRFQ

SDR1006-181KL

Bourns Inc.In Stock: 4889SDR1006-181KL Datasheet

SimilarRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution of the PD105R-184K is based on strict equivalence of the following critical parameters:

Primary Matching Criteria:

• Inductance value: 180 µH
• Inductance tolerance: ±10%
• Current rating: 720 mA minimum
• Core type: Ferrite drum core, wirewound
• Shielding configuration: Unshielded
• Mounting: Surface mount
• Compliance: RoHS3 and REACH requirements

Secondary Compatibility Factors:

• DC resistance within acceptable operating limits
• Operating temperature range compatibility
• Physical package dimensions suitable for board layout
• Saturation current rating equal to or exceeding application requirements

The SDR1006-181KL from Bourns Inc. meets all primary matching criteria and maintains full compatibility with the electrical specifications of the PD105R-184K. The substitute part is currently in active production status, ensuring long-term availability and supply chain stability.

Parameter Comparison

Engineering Selection Recommendations

The SDR1006-181KL from Bourns Inc. is the qualified substitute for the obsolete PD105R-184K. Selection is based on the following engineering factors:

Compliance and Regulatory Status: Both parts maintain ROHS3 compliance and REACH unaffected status, ensuring regulatory alignment for current and future production requirements.

Product Lifecycle: The PD105R-184K is obsolete, while the SDR1006-181KL is in active production. This transition ensures sustained component availability, predictable pricing, and manufacturer technical support.

Electrical Performance: The substitute part meets or exceeds all critical electrical specifications. The saturation current of 1.3 A in the SDR1006-181KL provides additional design margin compared to the 720 mA rating of the original part. The DC resistance increase from 560 mOhm to 630 mOhm represents a 12.5% variance, which is acceptable for most circuit applications within the specified inductance tolerance band.

Temperature Operating Range: The SDR1006-181KL operates from -40°C to 125°C. Applications requiring the full -55°C lower limit of the original part must be evaluated for thermal performance at the lower temperature boundary.

Physical Compatibility: Both parts use nonstandard surface mount packages with similar footprints. Dimensional verification is required: PD105R-184K measures 0.386" L × 0.346" W × 0.213" H; SDR1006-181KL measures 0.386" L × 0.386" W × 0.228" H. The width and height differences are minimal and typically accommodate standard PCB layout practices.

Frequently Asked Questions (FAQ)

Q: Can the SDR1006-181KL directly replace the PD105R-184K without circuit modification?

A: The SDR1006-181KL is electrically equivalent for the primary inductance specification of 180 µH at ±10% tolerance. The DC resistance increase of 70 mOhm (560 to 630 mOhm) may introduce minor power dissipation changes in high-current applications. Circuit simulation or bench testing is appropriate for applications where this resistance variance impacts thermal or efficiency performance.

Q: What is the impact of the operating temperature range difference?

A: The original PD105R-184K operates from -55°C to 125°C, while the SDR1006-181KL operates from -40°C to 125°C. Applications requiring operation below -40°C must evaluate alternative solutions. For standard industrial and commercial temperature ranges, the substitute part is fully compatible.

Q: Are there packaging or mounting differences between these parts?

A: Both parts are surface mount components with nonstandard packages. The SDR1006-181KL is slightly larger in width (0.386" vs. 0.346") and height (0.228" vs. 0.213"). PCB layout verification is necessary to confirm clearance and thermal management compatibility in the target application.

Q: What is the significance of the higher saturation current in the SDR1006-181KL?

A: The SDR1006-181KL has a saturation current rating of 1.3 A compared to 720 mA for the PD105R-184K. This provides additional design margin and reduces the risk of inductor saturation in transient or fault conditions. The substitute part is more robust for this specification.

Q: Is the SDR1006-181KL available in the same packaging format?

A: The SDR1006-181KL is supplied in Tape & Reel (TR) packaging, which is standard for high-volume production. The original PD105R-184K packaging format is not specified in the available data. Confirm packaging requirements with your procurement team.

Q: Are both parts compliant with current regulatory requirements?

A: Yes. Both the PD105R-184K and SDR1006-181KL are ROHS3 compliant and REACH unaffected, meeting current environmental and regulatory standards for electronic component manufacturing and use.