PD75R-823K Equivalent & Substitute Parts

Part Overview

The PD75R-823K is an 82 µH unshielded drum core wirewound inductor manufactured by API Delevan Inc., rated for 780 mA continuous current with a maximum DC resistance of 370 mOhm. This component is designed for surface mount applications in filtering, energy storage, and signal conditioning circuits. The part is classified as obsolete, making identification of equivalent substitutes necessary for ongoing production support and design continuity.

Substiute Parts

PD75R-823K

API Delevan Inc.In Stock: 804PD75R-823K Datasheet

Current PartRFQ

SDR0805-820KL

Bourns Inc.In Stock: 1948SDR0805-820KL Datasheet

SimilarRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution of the PD75R-823K is determined by the following critical parameters:

Primary Matching Criteria:

• Inductance value: 82 µH ±10%
• Current rating: minimum 780 mA continuous
• DC resistance: 370 mOhm maximum
• Core type: Ferrite drum core, unshielded
• Mounting: Surface mount configuration
• Compliance: ROHS3 and REACH requirements

Secondary Compatibility Factors:

• Operating temperature range compatibility
• Moisture sensitivity level
• Physical dimensions (within reasonable tolerance for PCB layout)
• Inductance frequency test standard: 1 kHz

The SDR0805-820KL from Bourns Inc. meets all primary matching criteria and maintains full compliance with environmental regulations. This part is currently in active production status, providing long-term availability advantages over the obsolete PD75R-823K.

Parameter Comparison

Engineering Selection Recommendations

The SDR0805-820KL is the qualified equivalent substitute for the PD75R-823K based on the following engineering factors:

Electrical Equivalence: All critical electrical parameters match exactly: 82 µH inductance, 780 mA current rating, and 370 mOhm maximum DC resistance. The SDR0805-820KL provides a higher saturation current rating of 1.2 A, which represents an improvement over the original specification and does not introduce compatibility issues.

Compliance Status: Both components maintain ROHS3 compliance and REACH unaffected status, ensuring regulatory requirements are met in current manufacturing environments.

Availability and Production Status: The SDR0805-820KL is in active production with 1,936 pieces in stock, compared to the obsolete PD75R-823K with limited remaining inventory of 770 pieces. This status difference makes the Bourns component the preferred choice for new designs and ongoing production support.

Physical Compatibility: Minor dimensional variations exist (footprint approximately 7.80mm x 7.80mm versus 7.70mm x 6.91mm, height 5.30mm versus 5.00mm). These differences are within acceptable tolerances for standard PCB layout practices and do not require design modifications.

Temperature Range Consideration: The SDR0805-820KL operates from -40°C to 125°C, which is narrower than the PD75R-823K range of -55°C to 125°C. Applications requiring operation below -40°C must evaluate this limitation against specific system requirements.

Frequently Asked Questions (FAQ)

Q: Can the SDR0805-820KL directly replace the PD75R-823K without PCB modifications?

A: The SDR0805-820KL is electrically equivalent and functionally interchangeable. Minor footprint differences (approximately 0.1mm in length and width, 0.3mm in height) are within standard PCB tolerance ranges. Verify pad spacing and clearances for your specific PCB layout, but redesign is typically not required.

Q: What is the significance of the higher saturation current rating (1.2 A) on the SDR0805-820KL?

A: The substitute part's 1.2 A saturation rating exceeds the original 780 mA specification. This provides additional design margin and does not create compatibility issues. The part will perform identically at the original 780 mA operating point.

Q: Are there any compliance or certification differences between these parts?

A: Both components are ROHS3 compliant and REACH unaffected. No compliance differences exist. Both are suitable for applications requiring these environmental certifications.

Q: Why is the operating temperature range different?

A: The SDR0805-820KL operates from -40°C to 125°C, while the PD75R-823K operates from -55°C to 125°C. If your application requires operation below -40°C, the substitute part is not suitable. For standard industrial and commercial temperature ranges, this difference is not a limiting factor.

Q: What packaging format is the SDR0805-820KL supplied in?

A: The SDR0805-820KL is supplied in Tape & Reel (TR) format, which is standard for automated assembly processes. The PD75R-823K packaging format was not specified in the original documentation.

Q: How do the Q factor and self-resonant frequency specifications affect substitution?

A: The SDR0805-820KL provides Q @ 2.52 MHz of 12 and a self-resonant frequency of 7 MHz. The original PD75R-823K specifications for these parameters were not provided. For applications where these high-frequency characteristics are critical, verify that the substitute part's specifications meet your circuit requirements.