PD104R-473K Equivalent & Substitute Parts

Part Overview

The PD104R-473K is a 47 µH unshielded drum core wirewound inductor manufactured by API Delevan Inc., designed for surface mount applications. This component features a ferrite core with a current rating of 1.1 A and a maximum DC resistance of 170 mOhm. The part is classified as Active product status with full RoHS3 compliance and unlimited moisture sensitivity rating (MSL 1).

Substitute parts are identified when equivalent electrical and mechanical parameters align within the specified tolerances and operational requirements of the original component. The primary substitute identified maintains the same inductance value, core material, DC resistance specification, and operating temperature range compatibility.

Substiute Parts

PD104R-473K

API Delevan Inc.In Stock: 1178PD104R-473K Datasheet

Current PartRFQ

SDR1006-470KL

Bourns Inc.In Stock: 2018SDR1006-470KL Datasheet

SimilarRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution eligibility for the PD104R-473K is determined by strict alignment of the following critical parameters:

Electrical Parameters (Must Match):

• Inductance value: 47 µH
• Inductance tolerance: ±10%
• DC resistance: 170 mOhm maximum
• Core material: Ferrite
• Shielding configuration: Unshielded

Operational Parameters (Must Be Compatible):

• Current rating equal to or greater than 1.1 A
• Operating temperature range that encompasses or exceeds -55°C to 125°C
• Mounting type: Surface Mount

Compliance Parameters (Must Match):

• RoHS3 compliance status
• Moisture sensitivity level: MSL 1 (Unlimited)

The SDR1006-470KL from Bourns Inc. qualifies as a substitute part because it maintains identical inductance, tolerance, DC resistance, core material, and shielding specifications. The substitute part exceeds the current rating requirement (1.25 A versus 1.1 A) and maintains full compliance certifications.

Parameter Comparison

Engineering Selection Recommendations

Primary Substitute: SDR1006-470KL (Bourns Inc.)

The SDR1006-470KL is qualified as a direct substitute for the PD104R-473K based on electrical and mechanical parameter equivalence. Both components are Active product status with full RoHS3 compliance and REACH unaffected designation.

Selection Considerations:

The substitute part provides a current rating of 1.25 A, which exceeds the original specification of 1.1 A, offering improved thermal margin in the application. The DC resistance specification remains identical at 170 mOhm maximum, ensuring equivalent power dissipation characteristics.

The operating temperature range of the substitute part (-40°C to 125°C) covers the upper temperature requirement of the original part. Applications requiring operation below -40°C must retain the original PD104R-473K component.

Both parts maintain identical inductance tolerance (±10%), core material (ferrite), and shielding configuration (unshielded), confirming functional equivalence in circuit performance.

Packaging differs between the two parts: the original uses Tape & Reel (TR) packaging, while the substitute uses Cut Tape (CT) & Digi-Reel® packaging. This distinction affects procurement and assembly processes but does not impact electrical or mechanical compatibility.

Frequently Asked Questions (FAQ)

Q: Can the SDR1006-470KL replace the PD104R-473K in all applications?

A: The SDR1006-470KL is electrically and mechanically equivalent for applications operating within the temperature range of -40°C to 125°C. Applications requiring operation below -40°C must use the original PD104R-473K, which is rated to -55°C.

Q: What is the significance of the current rating difference (1.1 A vs. 1.25 A)?

A: The substitute part's higher current rating (1.25 A) indicates it can handle greater current without saturation. This provides additional design margin and does not create compatibility issues when substituting into a circuit designed for 1.1 A operation.

Q: Are the physical dimensions compatible for PCB assembly?

A: Both parts are surface mount components with nonstandard package dimensions. The original PD104R-473K measures 0.386" L x 0.346" W x 0.157" H (9.80mm x 8.79mm x 4.00mm). The substitute SDR1006-470KL measures 0.386" L x 0.386" W x 0.228" H (9.80mm x 9.80mm x 5.80mm). The substitute is slightly larger in width and height; PCB layout compatibility must be verified before substitution.

Q: Do both parts meet the same compliance requirements?

A: Yes. Both the PD104R-473K and SDR1006-470KL are ROHS3 compliant, REACH unaffected, and carry MSL 1 (Unlimited) moisture sensitivity rating. Both are classified under ECCN EAR99 and HTSUS 8504.50.4000.

Q: What is the difference between Tape & Reel and Cut Tape & Digi-Reel packaging?

A: Tape & Reel (TR) packaging supplies components on continuous tape in reel format, suitable for high-volume automated assembly. Cut Tape (CT) & Digi-Reel® packaging provides components on tape segments or in alternative reel formats. The packaging choice affects procurement logistics and assembly line compatibility but does not affect component performance.

Q: Are there any frequency-dependent differences between these parts?

A: The substitute part SDR1006-470KL provides additional frequency specifications: Q factor of 20 at 2.52 MHz and self-resonant frequency of 8 MHz. The original PD104R-473K does not specify these parameters. For applications sensitive to high-frequency behavior, these additional specifications for the substitute part may be relevant for circuit analysis.