PD105R-474K Equivalent & Substitute Parts

Part Overview

The PD105R-474K is a 470 µH unshielded drum core wirewound inductor manufactured by API Delevan Inc., rated for 420 mA with a maximum DC resistance of 1.48Ohm. This surface mount component operates across the temperature range of -55°C to 125°C and is classified as obsolete. Due to its obsolete status and limited availability relative to active alternatives, identifying equivalent substitute parts is essential for ongoing design support and production continuity.

Substiute Parts

PD105R-474K

API Delevan Inc.In Stock: 1049PD105R-474K Datasheet

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SDR1006-471KL

Bourns Inc.In Stock: 5287SDR1006-471KL Datasheet

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Key Parameters

Substitute Part Grouping Explanation

Substitution of the PD105R-474K is determined by strict equivalence across the following critical parameters:

• Inductance Value: 470 µH (±10% tolerance maintained)
• Current Rating: Minimum 420 mA saturation capability
• DC Resistance: Maximum 1.48Ohm
• Core Type: Ferrite, unshielded drum core
• Mounting: Surface mount configuration
• Compliance: ROHS3 and REACH requirements

The SDR1006-471KL from Bourns Inc. meets all mandatory electrical and mechanical specifications. While the substitute exhibits enhanced performance characteristics (higher saturation current of 800mA and defined Q factor), these represent improvements that do not compromise compatibility with the original design intent.

Parameter Comparison

Engineering Selection Recommendations

The SDR1006-471KL is a direct functional equivalent for the PD105R-474K. Both components satisfy identical electrical specifications for inductance, current rating, and DC resistance. The substitute maintains full compliance with ROHS3 and REACH requirements, ensuring regulatory alignment.

The primary distinction is product status: the PD105R-474K is obsolete, while the SDR1006-471KL is active production. The substitute's higher saturation current (800mA versus 420mA) and defined Q factor (12 @ 796kHz) represent performance enhancements that do not introduce incompatibility. The operating temperature range of the substitute (-40°C to 125°C) covers the critical upper threshold of the original specification, with the lower limit difference immaterial for most applications operating above -40°C.

Packaging format differs: the substitute is supplied in Tape & Reel (TR) configuration, which may require process adjustment if the original design specified alternative packaging.

Frequently Asked Questions (FAQ)

Q: Can the SDR1006-471KL directly replace the PD105R-474K in existing designs?

A: Yes, provided the operating environment does not require temperatures below -40°C. The electrical specifications are equivalent, and both components meet the same compliance standards.

Q: What is the significance of the higher saturation current in the substitute?

A: The SDR1006-471KL saturates at 800mA compared to 420mA in the original. This represents a performance margin that does not affect compatibility; the component will function correctly at the design current of 420mA.

Q: Are there packaging considerations for the substitute?

A: The SDR1006-471KL is supplied in Tape & Reel (TR) format. Confirm that your assembly process accommodates this packaging, or consult your supplier regarding alternative packaging options.

Q: Do both components meet the same regulatory requirements?

A: Yes. Both the PD105R-474K and SDR1006-471KL are ROHS3 compliant and REACH unaffected, ensuring equivalent regulatory status.

Q: What is the physical size difference between these components?

A: The PD105R-474K measures 0.386" L x 0.346" W x 0.213" H (9.80mm x 8.79mm x 5.40mm). The SDR1006-471KL measures 0.386" L x 0.386" W x 0.228" H (9.80mm x 9.80mm x 5.80mm). The width and height are slightly larger; verify PCB layout compatibility before implementation.