PD105R-154K Equivalent & Substitute Parts Reference

Part Overview

The PD105R-154K is a 150 µH unshielded drum core wirewound inductor manufactured by API Delevan Inc., rated for 800 mA continuous current with a maximum DC resistance of 470 mOhm. This component is classified as obsolete, making identification of functionally equivalent alternatives essential for ongoing design support and procurement continuity. The part operates across the temperature range of -55°C to 125°C and is RoHS3 compliant with unlimited moisture sensitivity rating (MSL 1).

Substiute Parts

PD105R-154K

API Delevan Inc.In Stock: 1060PD105R-154K Datasheet

Current PartRFQ

SDR1006-151KL

Bourns Inc.In Stock: 4673SDR1006-151KL Datasheet

SimilarRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution of the obsolete PD105R-154K is based on strict alignment of the following critical electrical and mechanical parameters:

Primary Substitution Criteria:

• Inductance value: 150 µH (exact match required)
• Inductance tolerance: ±10% (matching specification)
• DC resistance: 470 mOhm maximum (matching specification)
• Core type: Ferrite, unshielded drum core wirewound construction
• Mounting: Surface mount, nonstandard package
• Current rating: Minimum 780 mA (acceptable for 800 mA design requirement)
• Compliance: RoHS3 compliant, REACH unaffected

The SDR1006-151KL from Bourns Inc. meets all primary substitution criteria. While the SDR1006-151KL has a rated current of 780 mA compared to the original 800 mA specification, the saturation current (Isat) of 1.4 A provides adequate margin for the application. Both parts share identical inductance, tolerance, and DC resistance specifications.

Parameter Comparison

Engineering Selection Recommendations

The SDR1006-151KL is the qualified substitute for the obsolete PD105R-154K based on the following engineering factors:

Electrical Equivalence: Both inductors deliver 150 µH inductance with ±10% tolerance and 470 mOhm maximum DC resistance. The SDR1006-151KL saturation current of 1.4 A exceeds the original 800 mA rating, providing additional design margin.

Compliance & Certification: Both parts maintain RoHS3 compliance and REACH unaffected status, ensuring regulatory continuity in production environments.

Product Availability: The SDR1006-151KL is classified as active product with 4,614 units in stock, compared to the obsolete PD105R-154K status. This ensures long-term procurement reliability.

Temperature Consideration: The SDR1006-151KL operates from -40°C to 125°C, which is narrower than the original -55°C to 125°C range. Applications requiring operation below -40°C require design review.

Packaging: Both parts use nonstandard surface mount packages with similar physical dimensions (9.80 mm × 8.79 mm vs. 9.80 mm × 9.80 mm), with height differences of 5.40 mm versus 5.80 mm. PCB layout verification is required.

Frequently Asked Questions (FAQ)

Q: Can the SDR1006-151KL directly replace the PD105R-154K without circuit modification?

A: The SDR1006-151KL meets all primary electrical specifications (inductance, tolerance, DC resistance) and can function as a direct substitute in most applications. However, the narrower operating temperature range (-40°C to 125°C versus -55°C to 125°C) and slightly larger physical dimensions require verification against your specific design constraints.

Q: What is the significance of the current rating difference (800 mA vs. 780 mA)?

A: The SDR1006-151KL has a continuous current rating of 780 mA, which is 20 mA lower than the original specification. However, its saturation current of 1.4 A provides adequate margin for transient conditions. For applications operating continuously at or above 800 mA, thermal analysis is required to confirm the substitute's performance.

Q: Are there any package compatibility issues?

A: Both inductors use nonstandard surface mount packages with similar footprints. The SDR1006-151KL is slightly larger in width (9.80 mm × 9.80 mm versus 9.80 mm × 8.79 mm) and height (5.80 mm versus 5.40 mm). PCB layout and component placement must be verified to ensure clearance and thermal management.

Q: Why is the PD105R-154K obsolete?

A: The PD105R-154K is classified as obsolete by API Delevan Inc. The SDR1006-151KL from Bourns Inc. represents the active equivalent in the market, with superior availability and ongoing manufacturer support.

Q: What compliance certifications apply to the substitute?

A: The SDR1006-151KL maintains RoHS3 compliance and REACH unaffected status, matching the original part's regulatory standing. Both inductors carry MSL 1 (unlimited moisture sensitivity), requiring no special handling during assembly.

Q: Is the Q factor specification important for substitution?

A: The SDR1006-151KL specifies Q @ 15 at 796 kHz and self-resonant frequency of 4.5 MHz. The original PD105R-154K does not provide these parameters. If high-frequency performance or Q factor is critical to your application, conduct frequency response testing to confirm compatibility.