Bourns 5258 Fixed Inductor Equivalent & Substitute Parts

Part Overview

The Bourns 5258 is a 1 mH unshielded drum core wirewound inductor rated for 1 A with a maximum DC resistance of 550 mOhm. This through-hole axial component operates across a temperature range of -55°C to 105°C and is part of the 5200 series. The 5258 is classified as obsolete, making identification of suitable substitute parts essential for ongoing design support and procurement continuity.

Substiute Parts

5258

Bourns Inc.In Stock: 6455258 Datasheet

Current PartRFQ

5258-RC

Bourns Inc.In Stock: 114465258-RC Datasheet

DirectRFQ

1536Z

Hammond ManufacturingIn Stock: 11881536Z Datasheet

SimilarRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitute parts for the Bourns 5258 are identified based on strict electrical and mechanical parameter matching. The primary substitution criteria are:

• Inductance value: 1 mH
• Current rating: 1 A minimum
• DC resistance: 550 mOhm maximum
• Tolerance: ±20%
• Core type: Drum core wirewound construction
• Shielding: Unshielded
• Mounting: Through hole axial configuration
• Operating temperature range: -55°C to 105°C minimum

Two substitute parts meet these electrical specifications. The 5258-RC is a direct manufacturer equivalent from Bourns Inc., differing only in packaging format and product status. The 1536Z from Hammond Manufacturing is a similar alternative that maintains all critical electrical parameters while using iron powder core material instead of ferrite.

Parameter Comparison

Engineering Selection Recommendations

The Bourns 5258-RC is the primary substitute for the obsolete 5258. Both parts are manufactured by Bourns Inc., share identical electrical specifications and physical dimensions, and maintain the same ferrite core construction. The 5258-RC is currently in active production status with ROHS3 compliance, addressing the regulatory non-compliance of the original 5258.

The Hammond 1536Z provides an alternative substitute when Bourns parts are unavailable. It meets all critical electrical parameters and maintains through-hole axial mounting compatibility. The 1536Z uses iron powder core material rather than ferrite and has a slightly shorter axial length (26.16 mm versus 31.75 mm). The 1536Z is ROHS3 compliant and actively produced.

Selection between the two substitutes depends on core material tolerance requirements and physical space constraints. The 5258-RC maintains exact dimensional and material compatibility. The 1536Z is suitable where core material differences are acceptable and the reduced length accommodates board layout requirements.

Frequently Asked Questions (FAQ)

Q: Can the Bourns 5258-RC directly replace the obsolete 5258?

A: Yes. The 5258-RC is electrically and mechanically identical to the 5258, with matching inductance (1 mH), current rating (1 A), DC resistance (550 mOhm max), tolerance (±20%), core type (ferrite drum core), and physical dimensions (0.500" Dia x 1.250" L). The primary difference is product status (active versus obsolete) and RoHS compliance (ROHS3 versus non-compliant).

Q: What are the differences between ferrite and iron powder cores in the 1536Z?

A: The Bourns 5258 and 5258-RC use ferrite core material, while the Hammond 1536Z uses iron powder core material. Both achieve the same 1 mH inductance and 550 mOhm DC resistance specifications. Core material selection affects frequency response characteristics and saturation behavior, but electrical performance at the specified test frequency (1 kHz) remains equivalent.

Q: Is the Hammond 1536Z physically compatible with the 5258 footprint?

A: The 1536Z has the same diameter (0.500" / 12.70 mm) and axial mounting configuration as the 5258, but is shorter in length (1.030" / 26.16 mm versus 1.250" / 31.75 mm). This reduced length is compatible with most through-hole PCB layouts and may provide space advantages. Verify clearance in your specific application before substitution.

Q: Are both substitute parts RoHS compliant?

A: Yes. Both the Bourns 5258-RC and Hammond 1536Z are ROHS3 compliant. The original 5258 is RoHS non-compliant, making either substitute necessary for applications requiring regulatory compliance.

Q: What is the inventory status of these substitute parts?

A: The Bourns 5258-RC has 11,377 pieces in stock. The Hammond 1536Z has 1,082 pieces in stock. Both are actively produced and available for procurement.