Bourns 5705 450µH Toroidal Inductor Equivalent & Substitute Parts

Part Overview

The Bourns 5705 is a 450µH unshielded toroidal inductor rated for 1.5A continuous current with a maximum DC resistance of 490mOhm. This through-hole component features an iron powder core and operates across the temperature range of -55°C to 105°C. The 5705 is classified as obsolete, making identification of compatible alternatives essential for ongoing production and maintenance applications. The active equivalent 5705-RC provides functional continuity while offering improved compliance status.

Substiute Parts

5705

Bourns Inc.In Stock: 8795705 Datasheet

Current PartRFQ

5705-RC

Bourns Inc.In Stock: 8865705-RC Datasheet

DirectRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution eligibility for the Bourns 5705 is determined by strict equivalence across the following critical parameters:

• Inductance Value: 450 µH with ±15% tolerance
• Current Rating: 1.5 A minimum
• DC Resistance: 490 mOhm maximum
• Core Type: Iron powder construction
• Shielding Configuration: Unshielded
• Mounting: Through-hole radial vertical orientation
• Physical Footprint: 0.875" diameter × 0.437" width
• Temperature Range: -55°C to 105°C operation

The 5705-RC maintains identical electrical and mechanical specifications, ensuring direct substitution capability. The primary distinction lies in product status and regulatory compliance rather than functional performance.

Parameter Comparison

Engineering Selection Recommendations

The Bourns 5705-RC is the direct functional equivalent of the obsolete 5705 model. Selection between these parts should be based on the following criteria:

Use 5705-RC for new designs and production: This part maintains active product status with ROHS3 compliance, ensuring long-term availability and regulatory alignment. The identical electrical and mechanical specifications guarantee seamless integration into existing PCB layouts and circuit designs.

Use 5705 only for legacy system maintenance: Where original component specifications are mandated for historical accuracy or specific application requirements, the 5705 remains available in limited inventory. However, the obsolete status presents supply chain risk.

Both parts share identical inductance, current rating, DC resistance, core material, and physical dimensions. The choice between them is driven by compliance requirements and supply chain considerations rather than technical performance differences.

Frequently Asked Questions (FAQ)

Q: Can the 5705-RC be used as a direct replacement for the 5705 in existing designs?

A: Yes. The 5705-RC is electrically and mechanically identical to the 5705. All critical parameters—inductance (450µH ±15%), current rating (1.5A), DC resistance (490mOhm max), core material (iron powder), and physical dimensions (0.875" Dia × 0.437" W)—are equivalent. PCB footprints and circuit performance remain unchanged.

Q: What is the primary difference between the 5705 and 5705-RC?

A: The 5705 is classified as obsolete with non-compliant RoHS status, while the 5705-RC is an active product with ROHS3 compliance. Functionally, both parts are identical.

Q: Are there packaging differences between these parts?

A: The 5705 is supplied in standard packaging, while the 5705-RC is available in bulk packaging. Both use the same radial, vertical (open) through-hole configuration with identical physical dimensions.

Q: What parameters must match for substitution eligibility?

A: Substitution requires equivalence in inductance value (450µH), tolerance (±15%), current rating (1.5A), DC resistance (490mOhm max), core material (iron powder), shielding (unshielded), mounting type (through-hole), package configuration (radial vertical), and operating temperature range (-55°C to 105°C).

Q: Is the 5705 still available for purchase?

A: Limited inventory of the 5705 remains available (867 pieces reported in stock). However, the obsolete status indicates declining availability. The 5705-RC is the recommended alternative for ongoing procurement.

Q: Do these inductors require any special handling or storage considerations?

A: No special moisture sensitivity or handling requirements are specified for either part. Both are rated as not applicable for moisture sensitivity level (MSL).