PD104R-474K Equivalent & Substitute Parts

Part Overview

The PD104R-474K is a 470 µH unshielded drum core wirewound inductor manufactured by API Delevan Inc., rated for 350 mA continuous current with a maximum DC resistance of 1.53Ohm. This surface mount component operates across the temperature range of -55°C to 125°C and is ROHS3 compliant. The part is currently active in production with 950 pieces available in stock. Substitute parts are identified when equivalent electrical performance and mechanical compatibility can be maintained within the specified parameter tolerances for this inductor category.

Substiute Parts

PD104R-474K

API Delevan Inc.In Stock: 1052PD104R-474K Datasheet

Current PartRFQ

SDR1006-471KL

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

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Key Parameters

Substitute Part Grouping Explanation

Substitution for the PD104R-474K is determined by strict equivalence in the following electrical and mechanical parameters:

• Inductance value: 470 µH with ±10% tolerance
• Core material and type: Ferrite drum core, unshielded construction
• Mounting technology: Surface mount configuration
• Current handling capability: Minimum 350 mA continuous rating
• DC resistance: Maximum 1.53Ohm to ensure thermal and performance compatibility
• Environmental compliance: ROHS3 compliant, MSL 1 rating
• Operating temperature range: Support for -55°C to 125°C minimum

The SDR1006-471KL from Bourns Inc. meets these substitution criteria with equivalent inductance, superior current rating (420 mA), and comparable DC resistance (1.48Ohm Max).

Parameter Comparison

Engineering Selection Recommendations

The SDR1006-471KL qualifies as a direct substitute for the PD104R-474K based on electrical and compliance equivalence. Both components are ROHS3 compliant, carry MSL 1 ratings, and maintain identical inductance specifications with matching tolerance bands. The Bourns SDR1006-471KL provides enhanced performance margins with 420 mA current rating versus the 350 mA specification of the API Delevan part, and exhibits lower DC resistance (1.48Ohm versus 1.53Ohm maximum).

The primary consideration is the operating temperature range: the SDR1006-471KL supports -40°C to 125°C, which is narrower at the lower temperature extreme compared to the PD104R-474K specification of -55°C to 125°C. Selection should be based on the actual application temperature requirements. Both parts are active products with established supply availability.

Frequently Asked Questions (FAQ)

Q: Can the SDR1006-471KL replace the PD104R-474K in all applications?

A: The SDR1006-471KL is electrically and mechanically compatible for applications operating within the -40°C to 125°C temperature range. Applications requiring operation below -40°C must retain the PD104R-474K.

Q: What is the significance of the current rating difference between these parts?

A: The SDR1006-471KL is rated for 420 mA continuous current compared to the PD104R-474K at 350 mA. This provides additional thermal margin in the substitute part. Both ratings exceed typical application requirements at 350 mA, making the higher rating of the Bourns component a performance advantage.

Q: Are the physical dimensions compatible for PCB layout?

A: Both parts are nonstandard package types. The PD104R-474K measures 0.386" L x 0.346" W x 0.157" H (9.80mm x 8.79mm x 4.00mm). The SDR1006-471KL measures 0.386" L x 0.386" W x 0.228" H (9.80mm x 9.80mm x 5.80mm). The SDR1006-471KL is wider and taller; PCB layout compatibility must be verified for your specific design.

Q: Do both parts meet the same compliance standards?

A: Yes. Both the PD104R-474K and SDR1006-471KL are ROHS3 compliant, REACH unaffected, carry MSL 1 ratings, and share identical ECCN and HTSUS classifications.

Q: What is the DC resistance impact on circuit performance?

A: The SDR1006-471KL exhibits 1.48Ohm maximum DC resistance versus 1.53Ohm for the PD104R-474K. This 0.05Ohm difference represents approximately 3% lower resistance in the substitute part, resulting in reduced power dissipation and improved efficiency in current-carrying applications.