Bourns 5603-RC Equivalent & Substitute Parts

Part Overview

The Bourns 5603-RC is a 25 µH unshielded drum core wirewound inductor rated for 8 A continuous current with a maximum DC resistance of 23 mOhm. This through-hole component operates across the temperature range of -55°C to 105°C and is designed for radial, vertical cylinder mounting. The 5603-RC is classified as obsolete, making identification of active equivalent parts essential for ongoing production and maintenance applications.

Substiute Parts

5603-RC

Bourns Inc.In Stock: 9915603-RC Datasheet

Current PartRFQ

1539M03

Hammond ManufacturingIn Stock: 16011539M03 Datasheet

DirectRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution of the Bourns 5603-RC is determined by strict equivalence across the following critical parameters:

• Inductance value: 25 µH with ±10% tolerance
• Current rating: 8 A minimum
• DC resistance: 23 mOhm maximum
• Core material and shielding: Ferrite, unshielded
• Inductor construction: Drum core, wirewound
• Mounting configuration: Through hole, radial vertical cylinder
• Physical envelope: 0.830" diameter, 0.910" maximum height
• Test frequency: 1 kHz

The Hammond Manufacturing 1539M03 meets all specified electrical and mechanical parameters, establishing it as a direct functional equivalent. Both parts maintain identical inductance, current handling, resistance characteristics, and physical form factor, enabling direct substitution in circuit applications.

Parameter Comparison

Engineering Selection Recommendations

The Hammond Manufacturing 1539M03 is the qualified substitute for the obsolete Bourns 5603-RC. Both components are ROHS3 compliant and REACH unaffected, meeting current regulatory requirements. The Hammond 1539M03 maintains active product status, ensuring continued availability and supply chain reliability. All electrical specifications, mechanical dimensions, and mounting characteristics are identical, supporting direct board-level substitution without circuit redesign.

Frequently Asked Questions (FAQ)

Q: Can the Hammond 1539M03 be used as a direct replacement for the Bourns 5603-RC?

A: Yes. Both inductors share identical inductance (25 µH ±10%), current rating (8 A), DC resistance (23 mOhm max), core construction (ferrite drum core, unshielded), and physical dimensions (0.830" diameter, 0.910" height). Through-hole radial mounting is identical on both components.

Q: What is the primary reason for substitution?

A: The Bourns 5603-RC is classified as obsolete. The Hammond 1539M03 is an active product with equivalent specifications and ongoing manufacturer support.

Q: Are there any compliance differences between these parts?

A: No. Both components are ROHS3 compliant and REACH unaffected, meeting identical regulatory standards.

Q: Does packaging differ between the two parts?

A: The Bourns 5603-RC is supplied in standard packaging, while the Hammond 1539M03 is supplied in bulk packaging. This does not affect component functionality or performance.

Q: What parameters must remain constant for substitution?

A: Inductance value (25 µH), tolerance (±10%), current rating (8 A), DC resistance (23 mOhm max), core material (ferrite), shielding (unshielded), mounting type (through hole), and physical envelope (0.830" diameter, 0.910" height) must all remain unchanged.