PM54-820K Equivalent & Substitute Parts

Part Overview

The PM54-820K is an 82 µH unshielded drum core wirewound inductor rated for 580 mA with 600mOhm DC resistance, manufactured by Bourns Inc. in a nonstandard surface mount package. This part is currently obsolete, making equivalent and substitute components necessary for ongoing production and maintenance applications. Substitute parts maintain the same electrical specifications while offering improved product status, compliance certifications, and packaging options.

Key Parameters

Parameter	Value
Inductance	82 µH
Inductance Tolerance	±10%
Current Rating	580 mA
DC Resistance (DCR)	600mOhm
Core Material	Ferrite
Shielding	Unshielded
Mounting Type	Surface Mount
Package Size	0.228" L x 0.228" W (5.80mm x 5.80mm)
Height (Seated Max)	0.189" (4.80mm)

Substitute Part Grouping Explanation

Substitute parts are classified into two categories based on substitution compatibility:

Direct Substitutes maintain identical electrical and mechanical specifications with the PM54-820K:

PM54-820K-RC (Bourns Inc., Active status)
SDR0604-820KL (Bourns Inc., Active status)

Similar Substitutes maintain core electrical specifications (inductance, current rating, DCR, core material, shielding) with minor dimensional variations within acceptable tolerances:

CD54NP-820KC (Sumida America Components Inc.)
CR54NP-820KC (Sumida America Components Inc.)
PD54R-823K (API Delevan Inc.)

All substitutes share the following critical parameters with the main part:

82 µH inductance with ±10% tolerance
580 mA current rating
600mOhm DC resistance (maximum)
Ferrite core material
Unshielded configuration
Surface mount technology
Nonstandard package classification

Parameter Comparison

Parameter	PM54-820K	PM54-820K-RC	SDR0604-820KL	CD54NP-820KC	CR54NP-820KC	PD54R-823K
Manufacturer	Bourns Inc.	Bourns Inc.	Bourns Inc.	Sumida America	Sumida America	API Delevan Inc.
Product Status	Obsolete	Active	Active	Active	Active	Active
Inductance	82 µH	82 µH	82 µH	82 µH	82 µH	82 µH
Tolerance	±10%	±10%	±10%	±10%	±10%	±10%
Current Rating (mA)	580	580	580	580	580	580
Current - Saturation (Isat)	-	750mA	750mA	-	-	580mA
DC Resistance (DCR)	600mOhm	600mOhm	600mOhm Max	600mOhm Max	600mOhm Max	600mOhm Max
Core Material	Ferrite	Ferrite	Ferrite	Ferrite	Ferrite	Ferrite
Shielding	Unshielded	Unshielded	Unshielded	Unshielded	Unshielded	Unshielded
Operating Temperature	-30°C ~ 100°C	-40°C ~ 125°C	-40°C ~ 125°C	-40°C ~ 100°C	-40°C ~ 100°C	-55°C ~ 125°C
Mounting Type	Surface Mount	Surface Mount	Surface Mount	Surface Mount	Surface Mount	Surface Mount
Package Size (mm)	5.80 x 5.80	5.80 x 5.80	5.80 x 5.80	5.80 x 5.20	5.80 x 5.30	5.70 x 5.11
Height Seated Max (mm)	4.80	4.80	4.80	4.85	4.85	4.50
RoHS Status	Non-compliant	ROHS3 Compliant	ROHS3 Compliant	ROHS3 Compliant	ROHS3 Compliant	ROHS3 Compliant
Packaging	-	Tape & Reel (TR)	Cut Tape (CT) & Digi-Reel®	Tape & Reel (TR)	Tape & Reel (TR)	Tape & Reel (TR)

Engineering Selection Recommendations

For Direct Replacement (Identical Specifications): PM54-820K-RC is the primary direct substitute, offering active product status, ROHS3 compliance, and identical electrical and mechanical specifications. SDR0604-820KL provides an alternative direct substitute with identical specifications and extended temperature range (-40°C to 125°C).

For Similar Substitution (Minor Dimensional Variance): CD54NP-820KC, CR54NP-820KC, and PD54R-823K maintain all critical electrical parameters with dimensional variations within acceptable tolerances. These parts are suitable for applications where minor package size differences do not impact PCB layout constraints. All similar substitutes carry ROHS3 compliance certification.

Compliance Considerations: All substitute parts are ROHS3 compliant, addressing the non-compliance status of the obsolete PM54-820K. Selection should prioritize active product status and compliance certifications for long-term supply chain reliability.

Frequently Asked Questions (FAQ)

Q: Can PM54-820K-RC be used as a direct replacement for PM54-820K? A: Yes. PM54-820K-RC maintains identical inductance (82 µH), current rating (580 mA), DC resistance (600mOhm), core material (ferrite), shielding (unshielded), and package dimensions (5.80mm x 5.80mm x 4.80mm). The primary difference is active product status and ROHS3 compliance.

Q: What are the dimensional differences between direct and similar substitutes? A: Direct substitutes (PM54-820K-RC, SDR0604-820KL) maintain 5.80mm x 5.80mm x 4.80mm dimensions. Similar substitutes vary: CD54NP-820KC (5.80mm x 5.20mm x 4.85mm), CR54NP-820KC (5.80mm x 5.30mm x 4.85mm), and PD54R-823K (5.70mm x 5.11mm x 4.50mm). Verify PCB layout compatibility before selection.

Q: Are all substitute parts RoHS compliant? A: Yes. All substitute parts carry ROHS3 compliance certification, unlike the obsolete PM54-820K which is RoHS non-compliant.

Q: What is the difference between direct and similar substitutes in terms of electrical performance? A: Direct substitutes maintain all specified electrical parameters identically. Similar substitutes maintain core electrical specifications (inductance, current rating, DCR, core material, shielding) with variations in saturation current specifications and frequency characteristics where data is available.

Q: Which substitute offers the widest operating temperature range? A: PD54R-823K offers the widest operating temperature range (-55°C to 125°C), compared to PM54-820K-RC and SDR0604-820KL (-40°C to 125°C), and CD54NP-820KC and CR54NP-820KC (-40°C to 100°C).

Q: What packaging options are available for substitutes? A: PM54-820K-RC and CD54NP-820KC, CR54NP-820KC, and PD54R-823K are supplied in Tape & Reel (TR) packaging. SDR0604-820KL is available in Cut Tape (CT) and Digi-Reel® packaging.

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