Equivalent & Substitute Parts for 73F102AF-RC

Part Overview

The 73F102AF-RC is a 10 mH unshielded drum core wirewound inductor manufactured by Bourns Inc., rated for 80 mA maximum current with 34 Ohm DC resistance. This component is classified as obsolete, making identification of suitable substitute parts essential for ongoing design support and production continuity. The part operates across a temperature range of -55°C to 105°C and meets ROHS3 compliance requirements.

Substiute Parts

73F102AF-RC

Bourns Inc.In Stock: 85873F102AF-RC Datasheet

Current PartRFQ

B82145A1106J000

EPCOS - TDK ElectronicsIn Stock: 3619B82145A1106J000 Datasheet

SimilarRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution eligibility for the 73F102AF-RC is determined by the following critical parameters:

• Inductance Value: Must be 10 mH with ±5% tolerance
• Core Type and Shielding: Ferrite material, unshielded configuration
• Mounting and Package: Through hole axial package
• Current Rating: Must support minimum 80 mA operation
• DC Resistance: Must not exceed 34 Ohm maximum
• Temperature Range: Must cover the operating envelope of -55°C to 105°C
• Compliance: ROHS3 compliance required

The B82145A1106J000 from EPCOS - TDK Electronics meets these substitution criteria with compatible electrical and mechanical specifications.

Parameter Comparison

Engineering Selection Recommendations

The B82145A1106J000 is a direct functional substitute for the 73F102AF-RC. The substitute part maintains identical inductance value and tolerance, matching core material, shielding configuration, and mounting specifications. The B82145A1106J000 provides a higher current rating of 110 mA compared to the original 80 mA specification, offering improved headroom in current-limited applications. DC resistance remains within acceptable limits at 35 Ohm maximum versus 34 Ohm maximum for the original part. The substitute part features an extended operating temperature range to 125°C, providing additional thermal margin. Both components maintain ROHS3 compliance. The B82145A1106J000 is classified as active product status, ensuring continued availability and supply chain support compared to the obsolete 73F102AF-RC.

Frequently Asked Questions (FAQ)

Q: Can the B82145A1106J000 be used as a direct replacement for the 73F102AF-RC in existing designs?

A: Yes. Both parts share identical inductance values, tolerances, core materials, shielding types, and axial through-hole package configurations. The substitute part meets or exceeds all critical electrical parameters of the original component.

Q: What is the significance of the higher current rating on the substitute part?

A: The B82145A1106J000 is rated for 110 mA compared to the 73F102AF-RC at 80 mA. This higher rating provides additional operational margin and does not negatively impact circuit performance when substituted into designs originally specified for 80 mA operation.

Q: How do the DC resistance values compare between these parts?

A: The 73F102AF-RC specifies 34 Ohm maximum DC resistance, while the B82145A1106J000 specifies 35 Ohm maximum. This 1 Ohm difference is within normal manufacturing tolerance and does not create functional incompatibility in typical inductor applications.

Q: Are there physical size differences between these components?

A: Yes. The 73F102AF-RC measures 0.580" diameter by 0.625" length, while the B82145A1106J000 measures 0.256" diameter by 0.472" length. Physical board layout verification is required to confirm fit within existing PCB designs.

Q: What compliance certifications apply to both parts?

A: Both the 73F102AF-RC and B82145A1106J000 are ROHS3 compliant. The substitute part is REACH affected, whereas the original part is REACH unaffected. Compliance documentation should be reviewed for specific regulatory requirements.

Q: Why is the B82145A1106J000 preferred over the obsolete 73F102AF-RC?

A: The B82145A1106J000 carries active product status from EPCOS - TDK Electronics, ensuring long-term availability, supply chain continuity, and ongoing manufacturer support. The obsolete status of the 73F102AF-RC creates sourcing risk and limits future procurement options.