Bourns 5620 100µH Wirewound Inductor Equivalent & Substitute Parts

Part Overview

The Bourns 5620 is a 100µH unshielded drum core wirewound inductor rated for 9.8A continuous current with 27mOhm maximum DC resistance. This through-hole radial component operates across -55°C to 105°C and is designed for applications requiring stable inductance in power supply filtering, energy storage, and signal conditioning circuits.

The 5620 series is classified as obsolete. Identifying equivalent substitute parts ensures design continuity and maintains supply chain reliability for legacy systems and new designs requiring compatible performance characteristics.

Key Parameters

Parameter	Value
Inductance	100µH ±10%
Current Rating	9.8A
DC Resistance (DCR)	27mOhm Max
Core Material	Ferrite
Shielding	Unshielded
Mounting Type	Through Hole
Package Type	Radial, Vertical Cylinder
Operating Temperature Range	-55°C to 105°C
Test Frequency	1kHz
Physical Diameter	1.500" (38.10mm)
Physical Height	1.110" (28.19mm)

Substitute Part Grouping Explanation

Substitute parts for the Bourns 5620 are qualified based on the following electrical and mechanical parameters:

Electrical Compatibility Criteria:

Inductance value: 100µH ±10%
Current rating: minimum 9.76A (within 0.24A of original 9.8A specification)
DC resistance: maximum 25mOhm (lower than original 27mOhm, acceptable for improved performance)
Core material: Ferrite (unshielded)
Test frequency: 1kHz

Mechanical Compatibility Criteria:

Mounting type: Through hole radial configuration
Package type: Vertical cylinder
Physical dimensions: within acceptable tolerance for PCB footprint compatibility
Operating temperature range: minimum -55°C to 105°C coverage

The API Delevan DC1390-104K and DC1390R-104K meet all electrical and mechanical substitution criteria. Both parts maintain the 100µH inductance specification, support the required current levels, and utilize identical through-hole radial mounting geometry.

Parameter Comparison

Parameter	Bourns 5620	API Delevan DC1390-104K	API Delevan DC1390R-104K
Inductance	100µH ±10%	100µH ±10%	100µH ±10%
Current Rating (Amps)	9.8A	9.76A	9.76A
DC Resistance (DCR)	27mOhm Max	25mOhm Max	25mOhm Max
Core Material	Ferrite	Ferrite	Ferrite
Shielding	Unshielded	Unshielded	Unshielded
Operating Temperature Range	-55°C to 105°C	-55°C to 125°C	-55°C to 125°C
Mounting Type	Through Hole	Through Hole	Through Hole
Package Type	Radial, Vertical Cylinder	Radial, Vertical Cylinder	Radial, Vertical Cylinder
Physical Diameter	1.500" (38.10mm)	1.480" (37.60mm)	1.480" (37.60mm)
Physical Height	1.110" (28.19mm)	1.064" (27.03mm)	1.064" (27.03mm)
Test Frequency	1kHz	1kHz	1kHz
Product Status	Obsolete	Active	Active
RoHS Status	Non-compliant	Non-compliant	RoHS3 Compliant

Engineering Selection Recommendations

DC1390-104K Selection: This part is suitable for applications where RoHS compliance is not a design requirement. It maintains active product status with full electrical and mechanical compatibility to the Bourns 5620. The extended operating temperature range to 125°C provides additional thermal margin beyond the original specification.

DC1390R-104K Selection: This part is the preferred substitute for new designs and applications requiring regulatory compliance. It achieves RoHS3 compliance while maintaining identical electrical performance and mechanical compatibility. The active product status ensures long-term supply availability. The extended operating temperature range to 125°C and improved DC resistance (25mOhm vs. 27mOhm) provide performance advantages over the original Bourns 5620.

Both substitute parts feature slightly reduced physical dimensions (1.480" diameter, 1.064" height) compared to the original 5620 (1.500" diameter, 1.110" height), which may require PCB footprint verification for legacy board designs.

Frequently Asked Questions (FAQ)

Q: Can the DC1390-104K and DC1390R-104K be used interchangeably with the Bourns 5620?

A: Both API Delevan parts meet the electrical specifications (100µH inductance, 9.76A current rating, 25mOhm DCR) and mechanical requirements (through-hole radial mounting, vertical cylinder package) of the Bourns 5620. Physical dimensions are slightly smaller, requiring PCB footprint compatibility verification.

Q: What is the difference between DC1390-104K and DC1390R-104K?

A: Both parts are electrically and mechanically identical. The primary difference is RoHS compliance status: DC1390-104K is non-compliant, while DC1390R-104K is RoHS3 compliant. For new designs and regulated applications, DC1390R-104K is the appropriate selection.

Q: Are there any performance differences between the Bourns 5620 and the substitute parts?

A: The substitute parts feature lower DC resistance (25mOhm vs. 27mOhm) and extended operating temperature range (-55°C to 125°C vs. -55°C to 105°C), representing performance improvements. Inductance tolerance, current rating, and core material remain equivalent.

Q: Will the smaller physical dimensions of the substitute parts affect PCB compatibility?

A: The DC1390 series has slightly reduced diameter (1.480" vs. 1.500") and height (1.064" vs. 1.110"). Verify PCB footprint spacing and clearance requirements before substitution in legacy designs.

Q: What is the saturation current of the substitute parts?

A: The DC1390-104K and DC1390R-104K both specify 13.2A saturation current, providing additional current margin beyond the 9.76A continuous rating.

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