74F104AI-RC Equivalent & Substitute Parts

Part Overview

The 74F104AI-RC is a 100 µH unshielded drum core wirewound inductor manufactured by Bourns Inc., rated for 100 mA maximum current with 6Ohm DC resistance. This component is classified as obsolete, making identification of functionally equivalent alternatives essential for ongoing design support and production continuity. The through-hole axial package and specific electrical characteristics define the scope for suitable substitutes.

Substiute Parts

74F104AI-RC

Bourns Inc.In Stock: 94474F104AI-RC Datasheet

Current PartRFQ

B82144A2104J000

EPCOS - TDK ElectronicsIn Stock: 13833B82144A2104J000 Datasheet

SimilarRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution eligibility for the 74F104AI-RC is determined by the following criteria:

• Inductance value must be 100 µH
• Core construction must be drum core wirewound type
• Shielding configuration must be unshielded
• Mounting must be through-hole axial package
• Current rating must meet or exceed 100 mA
• DC resistance must not exceed 6Ohm
• Operating temperature range must encompass -55°C to 105°C minimum
• RoHS3 compliance required

The B82144A2104J000 satisfies these substitution parameters with enhanced electrical performance characteristics.

Parameter Comparison

Engineering Selection Recommendations

The B82144A2104J000 is an active product from EPCOS - TDK Electronics and represents a direct functional substitute for the obsolete 74F104AI-RC. Both components maintain ROHS3 compliance and identical inductance specifications at 100 µH.

The substitute part provides superior electrical performance with 600 mA current rating versus 100 mA, and significantly lower DC resistance at 700mOhm maximum compared to 6Ohm. The ferrite core construction in the substitute offers improved frequency characteristics and tighter inductance tolerance (±5% versus ±10%).

The extended operating temperature range of -55°C to 125°C in the substitute accommodates the original specification range of -55°C to 105°C. Physical dimensions remain compatible within axial through-hole package constraints.

Frequently Asked Questions (FAQ)

Q: Can the B82144A2104J000 directly replace the 74F104AI-RC in existing designs?

A: Yes. Both components share identical inductance values, unshielded drum core wirewound construction, and through-hole axial packaging. The substitute meets all minimum electrical requirements of the original part.

Q: What are the implications of the different core materials (iron vs. ferrite)?

A: The ferrite core in the B82144A2104J000 provides different frequency response characteristics. The substitute exhibits a self-resonant frequency of 4.6MHz compared to 14MHz in the original. Circuit designers must verify frequency-dependent behavior in their specific application.

Q: Does the lower DC resistance of the substitute affect circuit performance?

A: The B82144A2104J000 exhibits 700mOhm DCR versus 6Ohm in the original part. This represents a significant reduction in resistive losses, which may alter circuit behavior in applications sensitive to inductor resistance. Verification in the target circuit is necessary.

Q: Are there packaging or footprint differences?

A: Physical dimensions are comparable: 0.200" Dia x 0.500" L (74F104AI-RC) versus 0.205" Dia x 0.472" L (B82144A2104J000). Both are axial through-hole packages suitable for standard PCB mounting.

Q: What is the compliance status of the substitute part?

A: The B82144A2104J000 is ROHS3 compliant and REACH affected. The original 74F104AI-RC is ROHS3 compliant and REACH unaffected. Both carry EAR99 ECCN classification.