Bourns 6702-RC Equivalent & Substitute Parts

Part Overview

The Bourns 6702-RC is a 25 µH shielded toroidal inductor rated for 5.5 A continuous current with a maximum DC resistance of 14 mOhm. This through-hole component features an iron powder core and operates across the temperature range of -55°C to 105°C. The part is classified as obsolete, making identification of suitable equivalent components essential for ongoing system support and new design implementations where this inductance value and current rating are required.

Substiute Parts

6702-RC

Bourns Inc.In Stock: 6806702-RC Datasheet

Current PartRFQ

PT25-800

API Delevan Inc.In Stock: 725PT25-800 Datasheet

SimilarRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution eligibility for the Bourns 6702-RC is determined by the following critical parameters:

• Inductance Value: Must be 25 µH with ±15% tolerance
• Current Rating: Must meet or exceed 5.5 A
• DC Resistance: Must not exceed 14 mOhm to maintain equivalent power dissipation characteristics
• Core Type: Iron powder core required for magnetic performance consistency
• Shielding: Shielded configuration mandatory for EMI containment
• Mounting Configuration: Through-hole radial/vertical orientation with compatible lead count and spacing
• Test Frequency: 1 kHz inductance measurement standard

The API Delevan PT25-800 meets the inductance, core material, shielding, and mounting requirements. However, the current rating (6.6 A) exceeds the original specification, and the DC resistance (25 mOhm) is elevated relative to the 6702-RC baseline.

Parameter Comparison

Engineering Selection Recommendations

The Bourns 6702-RC is classified as obsolete. The API Delevan PT25-800 is an active product and serves as a functional equivalent based on matching inductance, core material, shielding, and through-hole mounting configuration.

The PT25-800 exhibits a higher DC resistance (25 mOhm versus 14 mOhm), which will result in increased power dissipation under identical current conditions. The elevated current rating (6.6 A) provides operational margin above the original 5.5 A specification.

The Bourns 6702-RC carries RoHS3 compliance certification. The API Delevan PT25-800 is RoHS non-compliant. Both components are REACH unaffected and classified under ECCN EAR99 and HTSUS 8504.50.4000.

Frequently Asked Questions (FAQ)

Q: Can the API Delevan PT25-800 directly replace the Bourns 6702-RC in existing designs?

A: The PT25-800 matches the inductance value, core material, shielding, and mounting type. However, the increased DC resistance (25 mOhm versus 14 mOhm) will increase power dissipation. Thermal analysis of the application is required to confirm acceptability.

Q: What is the impact of the higher DC resistance in the PT25-800?

A: At 5.5 A, the 6702-RC dissipates approximately 0.423 W (I²R = 5.5² × 0.014). The PT25-800 at the same current dissipates approximately 0.756 W (I²R = 5.5² × 0.025). This 79% increase in power dissipation must be evaluated against thermal design margins in the target application.

Q: Are there dimensional compatibility concerns between these parts?

A: The Bourns 6702-RC measures 0.875" L × 0.425" W with a maximum seated height of 1.000". The API Delevan PT25-800 measures 0.800" Dia × 0.350" W. Both are through-hole radial/vertical configurations with open leads. PCB footprint compatibility should be confirmed based on actual lead spacing and hole placement.

Q: What is the significance of the RoHS compliance difference?

A: The 6702-RC is RoHS3 compliant; the PT25-800 is RoHS non-compliant. Applications subject to RoHS regulatory requirements cannot use the PT25-800 as a substitute.

Q: Does the PT25-800 support the full operating temperature range of the 6702-RC?

A: The operating temperature range is not specified for the PT25-800. The 6702-RC operates from -55°C to 105°C. Temperature performance equivalence cannot be confirmed from the provided data.