PD105R-223K Equivalent & Substitute Parts

Part Overview

The PD105R-223K is a 22 µH unshielded drum core wirewound inductor manufactured by API Delevan Inc., rated for 1.95 A with a maximum DC resistance of 100mOhm. This component is classified as obsolete, making identification of suitable substitutes essential for ongoing design support and production continuity. The part operates across the temperature range of -55°C to 125°C and meets ROHS3 compliance requirements.

Key Parameters

Parameter	Value
Inductance	22 µH
Inductance Tolerance	±10%
Current Rating	1.95 A
DC Resistance (Max)	100mOhm
Core Type	Ferrite, Drum Core, Wirewound
Shielding	Unshielded
Operating Temperature Range	-55°C to 125°C
Mounting Type	Surface Mount
RoHS Status	ROHS3 Compliant

Substitute Part Grouping Explanation

Substitution of the PD105R-223K is determined by the following critical parameters:

Inductance value: 22 µH (primary electrical requirement)
Current rating: minimum 1.95 A (saturation and thermal performance)
DC resistance: maximum 100mOhm (power loss and thermal characteristics)
Core construction: ferrite drum core wirewound (mechanical and electromagnetic properties)
Mounting type: surface mount (PCB integration)
Shielding configuration: unshielded (EMI characteristics and board layout)
Operating temperature range: minimum -55°C to 125°C coverage (environmental suitability)

The SDR1006-220ML from Bourns Inc. meets these substitution criteria across all critical parameters while maintaining active product status and full compliance certifications.

Parameter Comparison

Parameter	PD105R-223K (API Delevan)	SDR1006-220ML (Bourns)	Compatibility
Inductance	22 µH	22 µH	Match
Inductance Tolerance	±10%	±20%	Substitute tolerance wider
Current Rating (Amps)	1.95 A	1.95 A	Match
Current - Saturation (Isat)	1.95 A	4.6 A	Substitute rated higher
DC Resistance (Max)	100mOhm	100mOhm	Match
Core Type	Ferrite, Drum Core, Wirewound	Ferrite, Drum Core, Wirewound	Match
Shielding	Unshielded	Unshielded	Match
Operating Temperature Range	-55°C to 125°C	-40°C to 125°C	Substitute minimum temperature higher
Mounting Type	Surface Mount	Surface Mount	Match
Size / Dimension	0.386" L x 0.346" W (9.80mm x 8.79mm)	0.386" L x 0.386" W (9.80mm x 9.80mm)	Width dimension differs
Height - Seated (Max)	0.213" (5.40mm)	0.228" (5.80mm)	Substitute height slightly greater
RoHS Status	ROHS3 Compliant	ROHS3 Compliant	Match
Moisture Sensitivity Level (MSL)	1 (Unlimited)	1 (Unlimited)	Match
Product Status	Obsolete	Active	Substitute actively manufactured

Engineering Selection Recommendations

The SDR1006-220ML from Bourns Inc. is the qualified substitute for the obsolete PD105R-223K. Selection is supported by the following factors:

Both components maintain identical inductance values (22 µH) and current ratings (1.95 A)
DC resistance specifications are equivalent at 100mOhm maximum
Core construction, shielding configuration, and mounting type are identical
The substitute component carries active product status with established supply chain availability
Both parts maintain ROHS3 compliance and unlimited moisture sensitivity rating
The SDR1006-220ML demonstrates higher saturation current (4.6 A versus 1.95 A), providing additional design margin

Design considerations for implementation:

The SDR1006-220ML operates at a minimum temperature of -40°C, which is suitable for applications not requiring -55°C operation
Physical dimensions show minor variations: the substitute is 0.386" wide (versus 0.346") and 0.228" tall (versus 0.213")
PCB layout verification is required to confirm clearance compatibility with the slightly larger footprint
The substitute component features a wider inductance tolerance (±20% versus ±10%), which may require circuit performance validation in tolerance-sensitive applications

Frequently Asked Questions (FAQ)

Q: Can the SDR1006-220ML directly replace the PD105R-223K without circuit modification?

A: The SDR1006-220ML meets all critical electrical parameters (inductance, current rating, DC resistance) required for functional equivalence. However, physical dimension differences require PCB layout verification. The substitute is 0.040" wider and 0.015" taller, necessitating clearance confirmation before implementation.

Q: What is the impact of the wider inductance tolerance on circuit performance?

A: The SDR1006-220ML carries ±20% tolerance compared to the original part's ±10%. In applications where inductance value directly affects circuit performance (resonant frequency, impedance matching, filtering), tolerance stack analysis is required to confirm acceptable operating margins.

Q: Is the lower minimum operating temperature of the SDR1006-220ML (-40°C versus -55°C) a limitation?

A: The substitute operates down to -40°C. Applications requiring -55°C operation must evaluate alternative sources or confirm that -40°C minimum meets system requirements.

Q: Are there packaging or supply chain differences between these components?

A: The PD105R-223K is obsolete with limited remaining inventory. The SDR1006-220ML is actively manufactured by Bourns Inc. and available in Cut Tape and Digi-Reel packaging, ensuring reliable long-term supply for production and design updates.

Q: What is the significance of the higher saturation current in the SDR1006-220ML?

A: The substitute's 4.6 A saturation rating (versus 1.95 A) indicates greater core material margin before inductance degradation occurs. This provides additional design headroom for transient current conditions or thermal stress scenarios.

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