PD54R-154K Equivalent & Substitute Parts

Part Overview

The PD54R-154K is a 150 µH unshielded drum core, wirewound inductor manufactured by API Delevan Inc. with a 400 mA current rating and 1.1Ohm maximum DC resistance. This component is classified as an active product in continuous production. Identifying qualified substitute parts is essential for supply chain continuity, design flexibility, and availability assurance during procurement gaps or end-of-life transitions.

Substiute Parts

PD54R-154K

API Delevan Inc.In Stock: 1201PD54R-154K Datasheet

Current PartRFQ

SDR0604-151KL

Bourns Inc.In Stock: 1367SDR0604-151KL Datasheet

SimilarRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution of the PD54R-154K is determined by the following critical parameters that must be maintained for functional equivalence:

Mandatory Electrical Parameters:

• Inductance: 150 µH (matching tolerance ±10%)
• Current Rating: 400 mA minimum
• DC Resistance: 1.1Ohm maximum
• Core Material: Ferrite

Mandatory Mechanical Parameters:

• Mounting Type: Surface Mount
• Package / Case: Nonstandard (drum core geometry)
• Type: Drum Core, Wirewound
• Shielding: Unshielded

Compliance Requirements:

• RoHS3 Compliant
• Operating Temperature Range: -55°C ~ 125°C or better

The SDR0604-151KL from Bourns Inc. meets all mandatory electrical and mechanical substitution criteria, making it a qualified equivalent for the PD54R-154K in this application category.

Parameter Comparison

Engineering Selection Recommendations

Primary Criteria: The SDR0604-151KL qualifies as a direct electrical and mechanical equivalent to the PD54R-154K based on matching inductance, current rating, DC resistance, and core material specifications. Both components are active products with ROHS3 compliance, ensuring regulatory compliance and design integrity.

Operating Temperature Consideration: The PD54R-154K supports -55°C ~ 125°C, while the SDR0604-151KL supports -40°C ~ 125°C. Applications requiring operation below -40°C must retain the PD54R-154K. For standard operating ranges, the SDR0604-151KL is functionally suitable.

Saturation Current Performance: The SDR0604-151KL demonstrates a higher saturation current (540mA) compared to the PD54R-154K (400mA), providing additional margin in high-current transient conditions while maintaining the required 400 mA continuous rating.

Physical Footprint: Dimensional differences between the two parts are minimal (approximately 0.8 mm in length and 0.6 mm in width) and remain within typical PCB layout tolerances for nonstandard surface mount drum core inductors.

Frequently Asked Questions (FAQ)

Q: Can the SDR0604-151KL directly replace the PD54R-154K in my circuit? A: The SDR0604-151KL is a qualified substitute when operating temperatures remain above -40°C. All electrical specifications (inductance, current rating, DC resistance) and core material properties are equivalent. Verify physical footprint compatibility during PCB layout validation.

Q: What is the significance of the ±10% inductance tolerance? A: The ±10% tolerance indicates that inductance values can deviate between 135 µH and 165 µH under specified measurement conditions (1 kHz test frequency). Both the primary and substitute parts share this tolerance, ensuring consistent circuit behavior.

Q: Why is DC resistance specification critical for substitution? A: DC resistance directly impacts power dissipation, thermal performance, and circuit efficiency. The 1.1Ohm maximum specification ensures voltage drop and heat generation remain predictable. Both parts match this specification exactly.

Q: Are there physical size constraints I should consider? A: While dimensional differences exist (SDR0604-151KL is approximately 0.23" x 0.23" versus PD54R-154K at 0.224" x 0.201"), both are classified as nonstandard surface mount packages. Verify PCB land pattern compatibility and clearance requirements for your specific layout before implementation.

Q: Do both parts meet the same regulatory requirements? A: Both the PD54R-154K and SDR0604-151KL are ROHS3 compliant and carry EAR99 export classification. REACH status indicates both are unaffected, confirming regulatory equivalence for standard industrial and commercial applications.

Q: What is the saturation current difference, and does it matter? A: The SDR0604-151KL has a higher saturation current (540mA) than the PD54R-154K (400mA). In circuits operating below 400 mA, this difference is not relevant. The higher rating on the substitute provides additional safety margin under transient or peak current conditions.

Q: How should I verify part compatibility before deployment? A: Compare the electrical parameters (inductance, current rating, DCR), mounting type, and package geometry against your circuit requirements. Confirm that your operating temperature range falls within the substitute's specification (-40°C ~ 125°C minimum). Request datasheets from the component supplier for detailed electrical characteristics and frequency-dependent performance curves.