PD105R-823K Equivalent & Substitute Parts Reference

Part Overview

The PD105R-823K is an 82 µH unshielded drum core wirewound inductor manufactured by API Delevan Inc., rated for 1 A continuous current with a maximum DC resistance of 250 mOhm. This surface mount component operates across the temperature range of -55°C to 125°C and is classified as obsolete. Due to its obsolete product status, identifying equivalent substitute parts with matching electrical and mechanical specifications is essential for design continuity and procurement planning.

Substiute Parts

PD105R-823K

API Delevan Inc.In Stock: 1249PD105R-823K Datasheet

Current PartRFQ

SDR1006-820KL

Bourns Inc.In Stock: 2930SDR1006-820KL Datasheet

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Key Parameters

Substitute Part Grouping Explanation

Substitution of the PD105R-823K is determined by strict equivalence across the following critical parameters:

Electrical Equivalence Criteria:

• Inductance value: 82 µH ±10%
• Current rating: minimum 1 A
• DC resistance: 250 mOhm maximum
• Core material: Ferrite
• Shielding configuration: Unshielded

Mechanical Equivalence Criteria:

• Mounting type: Surface mount
• Core type: Drum core, wirewound
• Operating temperature range: minimum -55°C to 125°C coverage

Compliance Criteria:

• RoHS3 compliance required
• MSL rating: 1 (Unlimited)

The substitute part SDR1006-820KL meets all electrical and mechanical equivalence criteria. Both parts share identical inductance values, current ratings, and DC resistance specifications. The substitute maintains ferrite drum core construction with unshielded configuration and surface mount packaging. Compliance certifications are equivalent across both parts.

Parameter Comparison

Engineering Selection Recommendations

The SDR1006-820KL from Bourns Inc. is the qualified substitute for the obsolete PD105R-823K. Selection is based on the following engineering factors:

Electrical Compatibility: Both parts maintain identical inductance (82 µH ±10%), current rating (1 A), and DC resistance (250 mOhm maximum) specifications. The substitute's saturation current of 1.9 A exceeds the original specification, providing additional design margin.

Mechanical Compatibility: Surface mount configuration, ferrite drum core construction, and unshielded design are identical. Physical dimensions show minor variations: the substitute is 0.386" x 0.386" compared to 0.386" x 0.346", and seated height is 0.228" versus 0.213". These dimensional differences remain within typical PCB layout tolerances for surface mount inductors.

Compliance and Certification: Both parts are ROHS3 compliant with MSL rating of 1 (Unlimited), ensuring equivalent environmental and regulatory compliance.

Product Availability: The substitute is classified as active product status with 2856 pieces in stock, compared to the obsolete PD105R-823K. The SDR1006-820KL is supplied in standard Tape & Reel packaging, facilitating procurement and assembly operations.

Temperature Range Consideration: The original part operates from -55°C to 125°C, while the substitute operates from -40°C to 125°C. Applications requiring operation below -40°C must evaluate this specification difference against actual system requirements.

Frequently Asked Questions (FAQ)

Q: Can the SDR1006-820KL directly replace the PD105R-823K in existing designs?

A: The SDR1006-820KL meets all critical electrical specifications (inductance, current rating, DC resistance) and maintains identical core construction and mounting type. Minor dimensional variations (width and height) are typical for equivalent inductor designs and generally accommodate standard PCB layouts. Verification of physical fit within specific board space constraints is recommended.

Q: What is the significance of the saturation current difference (1 A vs. 1.9 A)?

A: The substitute's higher saturation current (1.9 A) indicates greater core material capability. For applications operating at or near the 1 A rating, this provides additional design margin and reduces risk of inductance degradation under transient current conditions.

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

A: Both parts carry identical RoHS3 compliance and MSL rating of 1 (Unlimited). No compliance or certification differences exist between the original and substitute.

Q: Why is the operating temperature range different?

A: The substitute operates from -40°C to 125°C versus the original -55°C to 125°C. Applications requiring operation below -40°C must confirm that the substitute meets system temperature requirements. Most commercial and industrial applications operate within the -40°C to 125°C range.

Q: What packaging options are available for the substitute?

A: The SDR1006-820KL is supplied in Tape & Reel (TR) packaging, which is standard for surface mount component procurement and automated assembly operations.

Q: How do the physical dimensions affect PCB layout?

A: The substitute is slightly larger in width (0.386" vs. 0.346") and height (0.228" vs. 0.213"). PCB designs with tight spatial constraints should verify that the substitute footprint accommodates these dimensional changes. Length remains identical at 0.386".