Bourns 5510-RC 27µH 9A Wirewound Inductor Equivalent & Substitute Parts

Part Overview

The Bourns 5510-RC is a 27µH unshielded drum core wirewound inductor rated for 9A continuous current with a maximum DC resistance of 22mOhm. This through-hole radial component operates across the temperature range of -55°C to 105°C and is specified for 1kHz inductance testing. The 5510-RC is classified as obsolete, making identification of active equivalent parts essential for ongoing design support and procurement continuity.

Key Parameters

Parameter	Value
Inductance	27 µH
Current Rating	9 A
DC Resistance (Max)	22 mOhm
Tolerance	±20%
Core Type	Drum Core, Wirewound
Shielding	Unshielded
Mounting Type	Through Hole
Package	Radial, Horizontal Cylinder
Physical Dimensions	0.880" Dia x 0.880" L (22.35mm x 22.35mm)
Operating Temperature	-55°C to 105°C
RoHS Status	ROHS3 Compliant

Substitute Part Grouping Explanation

Substitution of the Bourns 5510-RC is determined by strict equivalence across the following critical parameters:

Inductance value: 27 µH
Current rating: 9 A minimum
DC resistance: 22 mOhm maximum
Package type: Radial, horizontal cylinder through-hole configuration
Physical dimensions: 0.880" diameter x 0.880" length
Mounting compatibility: Through-hole radial orientation
Inductance test frequency: 1 kHz

The Hammond Manufacturing 1538M10 meets all substitution criteria. While the 1538M10 specifies a tighter tolerance (±10% versus ±20%), this represents an improvement in performance specification and does not restrict substitution. Both parts maintain identical inductance, current rating, DC resistance, physical dimensions, and mounting configuration.

Parameter Comparison

Parameter	Bourns 5510-RC	Hammond 1538M10	Match Status
Inductance	27 µH	27 µH	Equivalent
Current Rating	9 A	9 A	Equivalent
DC Resistance (Max)	22 mOhm	22 mOhm	Equivalent
Tolerance	±20%	±10%	Substitute Superior
Core Type	Drum Core, Wirewound	Wirewound	Equivalent
Shielding	Unshielded	Unshielded	Equivalent
Mounting Type	Through Hole	Through Hole	Equivalent
Package	Radial, Horizontal Cylinder	Radial, Horizontal Cylinder	Equivalent
Physical Dimensions	0.880" Dia x 0.880" L (22.35mm x 22.35mm)	0.880" Dia x 0.880" L (22.35mm x 22.35mm)	Equivalent
RoHS Status	ROHS3 Compliant	ROHS3 Compliant	Equivalent

Engineering Selection Recommendations

The Hammond Manufacturing 1538M10 is the direct functional equivalent for the obsolete Bourns 5510-RC. Selection between these parts should be based on the following factors:

The 5510-RC is classified as obsolete and should not be selected for new designs or long-term procurement. The 1538M10 carries active product status, ensuring ongoing availability and manufacturer support.

Both parts maintain ROHS3 compliance and REACH unaffected status, satisfying environmental and regulatory requirements. The 1538M10's tighter tolerance specification (±10%) provides improved inductance accuracy compared to the 5510-RC (±20%), which may benefit applications requiring closer component matching.

Physical and electrical compatibility is complete across all critical parameters. PCB layout and circuit design modifications are not required when transitioning from the 5510-RC to the 1538M10.

Frequently Asked Questions (FAQ)

Q: Can the Hammond 1538M10 be used as a direct replacement for the Bourns 5510-RC in existing designs?

A: Yes. The 1538M10 matches all critical electrical and mechanical specifications: 27µH inductance, 9A current rating, 22mOhm maximum DC resistance, identical physical dimensions (0.880" diameter x 0.880" length), and radial through-hole mounting configuration. No circuit modifications or PCB redesign is required.

Q: What is the significance of the tolerance difference between the two parts?

A: The 5510-RC specifies ±20% inductance tolerance, while the 1538M10 specifies ±10%. The tighter tolerance of the 1538M10 represents improved manufacturing precision and does not restrict substitution. Applications requiring the looser tolerance of the original part will operate within specification with the substitute.

Q: Are there any compliance or certification differences between these parts?

A: Both parts are ROHS3 compliant, REACH unaffected, and carry identical ECCN (EAR99) and HTSUS (8504.50.8000) classifications. No compliance barriers exist for substitution.

Q: Why is the Bourns 5510-RC classified as obsolete?

A: Obsolete status indicates the manufacturer has discontinued production. The Hammond 1538M10 maintains active product status, ensuring continued availability and manufacturer technical support for new and ongoing applications.

Q: Are the physical dimensions and mounting footprints identical?

A: Yes. Both parts are specified as 0.880" diameter x 0.880" length (22.35mm x 22.35mm) in radial, horizontal cylinder configuration. PCB footprints and mounting holes are identical, allowing direct mechanical substitution.

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