PD54R-332M Equivalent & Substitute Parts

Part Overview

The PD54R-332M is a 3.3 µH unshielded drum core wirewound inductor manufactured by API Delevan Inc. This surface mount component is rated for 2 A continuous current with a maximum DC resistance of 70 mOhm and operates across the temperature range of -55°C to 125°C. The part is currently active in production and RoHS3 compliant. Substitute parts are identified when equivalent electrical and mechanical specifications are required due to inventory constraints, supply chain considerations, or design flexibility needs.

Key Parameters

Parameter	Value	Unit
Inductance	3.3	µH
Inductance Tolerance	±20	%
Current Rating	2	A
DC Resistance (Max)	70	mOhm
Core Type	Ferrite Drum Core	—
Shielding	Unshielded	—
Mounting Type	Surface Mount	—
Operating Temperature Range	-55°C to 125°C	—
RoHS Status	ROHS3 Compliant	—
Moisture Sensitivity Level	1 (Unlimited)	—

Substitute Part Grouping Explanation

Substitution of the PD54R-332M is based on strict equivalence of the following critical electrical and mechanical parameters:

Electrical Equivalence Criteria:

Inductance value: 3.3 µH
Inductance tolerance: ±20%
Current rating: 2 A minimum
DC resistance: 70 mOhm maximum
Core material: Ferrite
Shielding configuration: Unshielded

Mechanical Equivalence Criteria:

Mounting type: Surface Mount
Package type: Nonstandard drum core
Operating temperature range: Must encompass or match -55°C to 125°C
Compliance: RoHS3 compliant, REACH unaffected

The substitute part SDR0604-3R3ML meets all critical electrical parameters and maintains full compliance with environmental regulations. Both parts are active products with unlimited moisture sensitivity rating (MSL 1).

Parameter Comparison

Parameter	PD54R-332M (API Delevan)	SDR0604-3R3ML (Bourns)	Match Status
Inductance	3.3 µH	3.3 µH	Equivalent
Inductance Tolerance	±20%	±20%	Equivalent
Current Rating	2 A	2 A	Equivalent
Current - Saturation	2 A	3.5 A	Substitute Exceeds
DC Resistance (Max)	70 mOhm	70 mOhm	Equivalent
Core Type	Ferrite Drum Core	Ferrite Drum Core	Equivalent
Shielding	Unshielded	Unshielded	Equivalent
Mounting Type	Surface Mount	Surface Mount	Equivalent
Operating Temperature Range	-55°C to 125°C	-40°C to 125°C	Substitute Limited at Low Temp
Size / Dimension (L x W)	0.224" x 0.201" (5.70mm x 5.11mm)	0.228" x 0.228" (5.80mm x 5.80mm)	Physically Similar
Height - Seated (Max)	0.177" (4.50mm)	0.189" (4.80mm)	Physically Similar
RoHS Status	ROHS3 Compliant	ROHS3 Compliant	Equivalent
Moisture Sensitivity Level	1 (Unlimited)	1 (Unlimited)	Equivalent
Product Status	Active	Active	Equivalent

Engineering Selection Recommendations

Primary Part: PD54R-332M

The PD54R-332M is the specified component and remains the first choice when available. It is an active product with full RoHS3 compliance and REACH unaffected status. The part supports the complete operating temperature range of -55°C to 125°C and is currently in stock with 726 pieces available.

Substitute Part: SDR0604-3R3ML

The SDR0604-3R3ML from Bourns Inc. is a direct electrical equivalent with identical inductance, tolerance, current rating, and DC resistance specifications. Both parts are ferrite drum core, unshielded, surface mount inductors with MSL 1 rating and full RoHS3 compliance.

Substitution Considerations:

The SDR0604-3R3ML exhibits a higher saturation current rating (3.5 A versus 2 A), which provides additional design margin in applications where transient current spikes may occur. The substitute part has a reduced minimum operating temperature of -40°C compared to -55°C for the primary part. Applications requiring operation below -40°C must use the PD54R-332M. Physical dimensions are similar with minor variations in length, width, and height that are within typical PCB layout tolerances for surface mount components. Both parts are active products with unlimited availability classification (MSL 1).

Frequently Asked Questions (FAQ)

Q: Can SDR0604-3R3ML be used as a direct replacement for PD54R-332M in all applications?

A: The SDR0604-3R3ML is electrically equivalent for inductance, current rating, and DC resistance. However, if your application requires operation below -40°C, the PD54R-332M must be used, as it supports -55°C minimum temperature. Physical dimensions are similar but not identical; verify PCB layout clearances for the slightly larger substitute part.

Q: What are the key electrical parameters that define substitution eligibility?

A: Substitution is based on matching inductance (3.3 µH), inductance tolerance (±20%), continuous current rating (2 A minimum), maximum DC resistance (70 mOhm), core material (ferrite), and shielding configuration (unshielded). The SDR0604-3R3ML meets all these criteria.

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

A: Both parts are RoHS3 compliant and REACH unaffected. Both carry MSL 1 (unlimited) moisture sensitivity rating. No compliance differences exist between the two components.

Q: How do the physical dimensions affect PCB design?

A: The PD54R-332M measures 0.224" L x 0.201" W x 0.177" H (5.70mm x 5.11mm x 4.50mm). The SDR0604-3R3ML measures 0.228" L x 0.228" W x 0.189" H (5.80mm x 5.80mm x 4.80mm). The substitute is slightly larger in all dimensions. Verify that your PCB layout accommodates the larger footprint and height before substitution.

Q: What is the difference in saturation current between these parts?

A: The PD54R-332M has a saturation current of 2 A, while the SDR0604-3R3ML has a saturation current of 3.5 A. The substitute part provides higher saturation margin, which may be beneficial in applications with transient current conditions.

Q: Are both parts available in the same packaging format?

A: Yes, both parts are supplied in Tape & Reel (TR) packaging for automated assembly processes.

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