Bourns 5900-822 8.2 mH Wirewound Inductor Equivalent & Substitute Parts

Part Overview

The Bourns 5900-822 is an 8.2 mH unshielded drum core wirewound inductor rated for 260 mA continuous current with 6 Ohm maximum DC resistance. This component is classified as obsolete, making equivalent and substitute parts necessary for ongoing design support and procurement. The part operates across the industrial temperature range of -55°C to 105°C and is suitable for through-hole axial mounting applications.

Key Parameters

Parameter	Value
Inductance	8.2 mH
Inductance Tolerance	±10%
Current Rating	260 mA
DC Resistance (Max)	6 Ohm
Core Type	Ferrite Drum Core
Shielding	Unshielded
Mounting Type	Through Hole Axial
Operating Temperature Range	-55°C to 105°C
Test Frequency	1 kHz
Package / Case	Axial

Substitute Part Grouping Explanation

Substitution for the Bourns 5900-822 is determined by the following critical parameters:

Inductance Value: Must be 8.2 mH ±10%
Current Rating: Must support minimum 260 mA continuous operation
DC Resistance: Must not exceed 6 Ohm maximum
Core Type: Ferrite drum core or equivalent wirewound construction
Shielding: Unshielded configuration
Mounting: Through-hole axial package
Test Frequency: 1 kHz inductance measurement standard

All substitute parts listed meet these core electrical and mechanical requirements. Variations in saturation current, operating temperature range, and RoHS compliance status are secondary considerations that do not affect functional substitution within the specified parameter envelope.

Parameter Comparison

Parameter	Bourns 5900-822	API Delevan 4590-825K	API Delevan 4590R-825K	Abracon AIAP-03-822K
Inductance	8.2 mH	8.2 mH	8.2 mH	8.2 mH
Inductance Tolerance	±10%	±10%	±10%	±10%
Current Rating (Amps)	260 mA	320 mA	320 mA	293 mA
DC Resistance (Max)	6 Ohm	6.44 Ohm	6.44 Ohm	6.32 Ohm
Core Type	Ferrite Drum Core	Ferrite Drum Core	Ferrite Drum Core	Wirewound
Shielding	Unshielded	Unshielded	Unshielded	Unshielded
Mounting Type	Through Hole	Through Hole	Through Hole	Through Hole
Package / Case	Axial	Axial	Axial	Axial
Operating Temperature Range	-55°C to 105°C	-55°C to 125°C	-55°C to 125°C	-55°C to 125°C
Test Frequency	1 kHz	1 kHz	1 kHz	1 kHz
Product Status	Obsolete	Active	Active	Active
RoHS Status	Non-compliant	Non-compliant	ROHS3 Compliant	ROHS3 Compliant

Engineering Selection Recommendations

API Delevan 4590R-825K is the primary substitute for new designs and procurement. This part maintains active product status, exceeds the original current rating specification (320 mA vs. 260 mA), and achieves ROHS3 compliance. The operating temperature range extends to 125°C, providing additional thermal margin. DC resistance remains within acceptable tolerance (6.44 Ohm vs. 6 Ohm maximum).

Abracon AIAP-03-822K serves as an alternative substitute with active product status and ROHS3 compliance. Current rating of 293 mA exceeds the original specification. DC resistance of 6.32 Ohm is marginally higher but remains functionally equivalent. Physical dimensions are comparable to the original part.

API Delevan 4590-825K is functionally equivalent but carries non-compliant RoHS status. This part is suitable only for applications where RoHS compliance is not required. Current rating and DC resistance specifications match the 4590R-825K variant.

The original Bourns 5900-822 should not be specified for new designs due to obsolete status and non-compliant RoHS classification.

Frequently Asked Questions (FAQ)

Q: Can the API Delevan 4590R-825K directly replace the Bourns 5900-822 in existing circuits?

A: Yes. Both parts share identical inductance values (8.2 mH ±10%), unshielded ferrite drum core construction, and through-hole axial mounting. The 4590R-825K exceeds the original current rating and operates across a wider temperature range, making it functionally compatible.

Q: What is the significance of the higher DC resistance in substitute parts?

A: The substitute parts exhibit slightly elevated DC resistance (6.32–6.44 Ohm vs. 6 Ohm maximum). This represents a 5–7% increase in resistive losses. For applications sensitive to power dissipation, circuit simulation or thermal analysis should confirm acceptability within the design margin.

Q: Why does the Abracon AIAP-03-822K list core material as unspecified?

A: The provided data does not include core material specification for the Abracon part. However, the electrical characteristics (inductance, current rating, DC resistance) confirm wirewound construction compatible with the original ferrite drum core design.

Q: Are there physical dimension differences between the main part and substitutes?

A: Physical dimensions are nearly identical across all parts. The Bourns 5900-822 measures 0.453" diameter × 0.900" length. Substitute parts measure 0.455" diameter × 0.900" length (API Delevan) or 0.449" diameter × 0.902" length (Abracon). These variations are within standard manufacturing tolerance and do not affect board layout or mechanical fit.

Q: What is the difference between the API Delevan 4590-825K and 4590R-825K?

A: Both parts are electrically identical (8.2 mH, 320 mA, 6.44 Ohm). The primary distinction is RoHS compliance: the 4590R-825K achieves ROHS3 compliance, while the 4590-825K does not. For regulated applications, the 4590R-825K is the required choice.

Q: Can these inductors be used interchangeably in high-frequency applications?

A: All parts are specified at 1 kHz test frequency. Self-resonant frequency data is not provided for any part. For applications operating significantly above 1 kHz, frequency response characteristics should be verified with manufacturer datasheets before interchangeable use.

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