PD54R-392M Equivalent & Substitute Parts

Part Overview

The PD54R-392M is a 3.9 µH unshielded drum core wirewound inductor manufactured by API Delevan Inc., rated for 1.9 A continuous current with a maximum DC resistance of 75 mOhm. This surface mount component is designed for applications requiring fixed inductance in compact form factors. The part is currently active in production with 762 units in stock. Substitute parts are identified when equivalent electrical and mechanical specifications can be met by alternative manufacturers while maintaining functional compatibility in the target application.

Substiute Parts

PD54R-392M

API Delevan Inc.In Stock: 810PD54R-392M Datasheet

Current PartRFQ

SDR0604-3R9ML

Bourns Inc.In Stock: 1883SDR0604-3R9ML Datasheet

SimilarRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution eligibility for the PD54R-392M is determined by the following critical parameters:

• Inductance Value: Must be 3.9 µH with ±20% tolerance
• Current Rating: Minimum 1.9 A continuous current capability
• DC Resistance: Must not exceed 75 mOhm to maintain thermal and efficiency characteristics
• Core Material: Ferrite drum core construction
• Shielding: Unshielded configuration
• Mounting: Surface mount technology
• Temperature Range: Must support -55°C to 125°C operation
• Compliance: ROHS3 compliant, MSL 1 rating

The SDR0604-3R9ML from Bourns Inc. meets all substitution criteria with equivalent inductance, current rating, and core construction. The substitute part demonstrates superior DC resistance (70 mOhm vs. 75 mOhm maximum) and extended saturation current capability (3.2 A vs. 1.9 A), providing additional design margin.

Parameter Comparison

Engineering Selection Recommendations

The SDR0604-3R9ML qualifies as a direct substitute for the PD54R-392M based on matching electrical specifications and compliance certifications. Both components are ROHS3 compliant with MSL 1 ratings, indicating equivalent environmental handling and regulatory status.

Selection between the two parts should account for the following:

• Lower Temperature Operation: The PD54R-392M supports operation to -55°C, while the SDR0604-3R9ML is rated to -40°C minimum. Applications requiring full -55°C operation must use the API Delevan part.
• DC Resistance: The SDR0604-3R9ML provides 70 mOhm maximum resistance, offering 5 mOhm improvement over the PD54R-392M specification.
• Saturation Current: The SDR0604-3R9ML exhibits 3.2 A saturation current compared to 1.9 A for the PD54R-392M, providing additional design margin in current-limited applications.
• Availability: Inventory levels should be evaluated based on procurement timeline and supply chain requirements.

Frequently Asked Questions (FAQ)

Q: Can the SDR0604-3R9ML replace the PD54R-392M in all applications?

A: The SDR0604-3R9ML is electrically equivalent for applications operating within the -40°C to 125°C temperature range. Applications requiring operation below -40°C must use the PD54R-392M to ensure specification compliance.

Q: What is the significance of the DC resistance difference between these parts?

A: The SDR0604-3R9ML exhibits 70 mOhm maximum DC resistance versus 75 mOhm for the PD54R-392M. This 5 mOhm reduction results in lower resistive losses and reduced thermal dissipation at rated current, improving efficiency by approximately 6.7% at 1.9 A.

Q: Are the physical dimensions compatible for PCB layout?

A: Both parts use nonstandard packages. The PD54R-392M measures 5.70 mm × 5.11 mm × 4.50 mm (L × W × H), while the SDR0604-3R9ML measures 5.80 mm × 5.80 mm × 4.80 mm. PCB footprint verification is required before substitution.

Q: Do both parts meet the same compliance standards?

A: Yes. Both the PD54R-392M and SDR0604-3R9ML are ROHS3 compliant, REACH unaffected, and carry MSL 1 ratings. Both are classified under ECCN EAR99 and HTSUS 8504.50.4000.

Q: What inductance frequency test conditions apply to each part?

A: The PD54R-392M inductance is tested at 7.96 MHz. The SDR0604-3R9ML inductance is tested at 1 kHz with a self-resonant frequency of 40 MHz. Frequency-dependent behavior should be evaluated for applications sensitive to measurement conditions.