PD73R-224K Equivalent & Substitute Parts

Part Overview

The PD73R-224K is a 220 µH unshielded drum core wirewound inductor manufactured by API Delevan Inc., rated for 310 mA maximum current with 1.2Ohm DC resistance. This component is classified as obsolete, necessitating identification of equivalent substitute parts for ongoing design requirements and procurement needs. The part operates across the temperature range of -55°C to 125°C and complies with RoHS3 and REACH standards.

Substiute Parts

PD73R-224K

API Delevan Inc.In Stock: 967PD73R-224K Datasheet

Current PartRFQ

SDR0805-221KL

Bourns Inc.In Stock: 3671SDR0805-221KL Datasheet

SimilarRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution of the PD73R-224K is determined by the following critical parameters:

Primary Matching Criteria:

• Inductance value: 220 µH ±10%
• Core type: Ferrite drum core, wirewound
• Shielding configuration: Unshielded
• Mounting technology: Surface mount

Secondary Compatibility Criteria:

• Current rating equal to or greater than 310 mA
• DC resistance within acceptable operating limits
• Operating temperature range encompassing -55°C to 125°C minimum
• RoHS3 compliance and REACH compliance status

The SDR0805-221KL from Bourns Inc. satisfies all primary matching criteria and exceeds secondary compatibility requirements through higher current rating (490 mA) and lower DC resistance (960mOhm), while maintaining identical inductance specification and core material composition.

Parameter Comparison

Engineering Selection Recommendations

The SDR0805-221KL qualifies as a direct substitute for the obsolete PD73R-224K based on the following engineering criteria:

Electrical Equivalence: Both components maintain identical 220 µH inductance specification with ±10% tolerance at 1 kHz test frequency. The SDR0805-221KL provides superior electrical performance through 490 mA current rating versus 310 mA requirement and 960mOhm DC resistance versus 1.2Ohm specification.

Regulatory Compliance: Both parts maintain ROHS3 compliance and REACH unaffected status, satisfying environmental and regulatory requirements for equivalent component selection.

Thermal Operating Range: The SDR0805-221KL operates across -40°C to 125°C, covering the upper temperature requirement of the original specification. Applications requiring the full -55°C lower temperature limit of the PD73R-224K must evaluate thermal performance requirements independently.

Physical Compatibility: Both components utilize surface mount technology with ferrite drum core construction and unshielded configuration, ensuring functional equivalence in circuit applications.

Frequently Asked Questions (FAQ)

Q: Can the SDR0805-221KL directly replace the PD73R-224K in existing designs?

A: Yes, the SDR0805-221KL provides electrical and functional equivalence for the PD73R-224K. Both components share identical inductance (220 µH), tolerance (±10%), core material (ferrite), shielding (unshielded), and mounting technology (surface mount). The substitute part exceeds the original current rating and provides lower DC resistance.

Q: What is the difference in DC resistance between these parts?

A: The PD73R-224K specifies 1.2Ohm maximum DC resistance, while the SDR0805-221KL specifies 960mOhm maximum. The substitute part provides approximately 20% lower DC resistance, resulting in reduced power dissipation in circuit applications.

Q: Are there physical dimension differences between these inductors?

A: Yes. The PD73R-224K measures 0.303" L x 0.272" W x 0.138" H (7.70mm x 6.91mm x 3.50mm). The SDR0805-221KL measures 0.307" diameter x 0.209" H (7.80mm x 5.30mm). Physical layout verification is required for PCB footprint compatibility.

Q: What is the operating temperature difference?

A: The PD73R-224K operates from -55°C to 125°C, while the SDR0805-221KL operates from -40°C to 125°C. Applications requiring operation below -40°C must verify thermal performance requirements against the substitute specification.

Q: Do both parts meet the same regulatory standards?

A: Yes. Both the PD73R-224K and SDR0805-221KL are ROHS3 compliant and REACH unaffected, satisfying equivalent environmental and regulatory requirements.

Q: What is the current saturation rating difference?

A: The PD73R-224K saturates at 310 mA, while the SDR0805-221KL saturates at 800 mA. The substitute part provides significantly higher saturation current, allowing operation at higher current levels without inductance degradation.