70F392AF-RC Equivalent & Substitute Parts

Part Overview

The 70F392AF-RC is a 39 mH unshielded drum core wirewound inductor manufactured by Bourns Inc., designed for through-hole axial mounting applications. This component features a ferrite core with a maximum DC resistance of 147 Ohm and supports a current rating of 41 mA across an operating temperature range of -55°C to 105°C. The part is classified as obsolete, making identification of functionally equivalent alternatives necessary for ongoing design support and procurement planning.

Substiute Parts

70F392AF-RC

Bourns Inc.In Stock: 86870F392AF-RC Datasheet

Current PartRFQ

4590R-396J

API Delevan Inc.In Stock: 9414590R-396J Datasheet

SimilarRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution eligibility for the 70F392AF-RC is determined by the following critical parameters:

• Inductance Value: 39 mH (±5% tolerance)
• Core Type: Ferrite drum core, unshielded
• Mounting Configuration: Through-hole axial package
• Environmental Compliance: ROHS3 compliance required

The 4590R-396J qualifies as a functional equivalent based on matching inductance specification (39 mH ±5%), identical core material and shielding configuration, and compatible through-hole axial mounting. Both components maintain ferrite drum core construction and unshielded design, ensuring electromagnetic behavior consistency within the specified tolerance band.

Parameter Comparison

Engineering Selection Recommendations

The 4590R-396J from API Delevan Inc. is available as an active product with confirmed inventory (848 pcs), providing supply continuity for applications currently using the obsolete 70F392AF-RC. Both components maintain ROHS3 compliance and REACH unaffected status, satisfying regulatory requirements for equivalent substitution.

The 4590R-396J demonstrates superior electrical performance characteristics: current rating of 150 mA exceeds the original 41 mA specification, and DC resistance of 29.7 Ohm is significantly lower than the 147 Ohm maximum of the 70F392AF-RC. The extended operating temperature range (-55°C to 125°C) provides additional thermal margin compared to the original -55°C to 105°C specification.

Physical dimensions differ between the two components: the 4590R-396J measures 0.455" diameter by 0.900" length (11.55mm x 22.86mm) versus the 70F392AF-RC at 0.370" diameter by 0.630" length (9.40mm x 16.00mm). Design verification is required to confirm mechanical fit within existing board layouts and enclosure constraints.

Frequently Asked Questions (FAQ)

Q: Can the 4590R-396J directly replace the 70F392AF-RC in existing designs?

A: Both components share identical inductance values (39 mH ±5%), core material (ferrite), shielding configuration (unshielded), and mounting type (through-hole axial). Electrical substitution is valid. Physical dimensions differ, requiring verification of mechanical fit in the target application.

Q: What are the key differences between these inductors?

A: The primary differences are current rating (41 mA vs. 150 mA), DC resistance (147 Ohm vs. 29.7 Ohm), operating temperature range (-55°C to 105°C vs. -55°C to 125°C), and physical size. The 4590R-396J offers superior current handling and lower resistance characteristics.

Q: Are both parts RoHS compliant?

A: Yes, both the 70F392AF-RC and 4590R-396J are ROHS3 compliant and REACH unaffected, meeting current environmental and regulatory standards.

Q: What should be verified before implementing the 4590R-396J as a substitute?

A: Confirm mechanical fit within the PCB layout and enclosure, as the 4590R-396J is larger (0.455" x 0.900" vs. 0.370" x 0.630"). Verify that the lower DC resistance (29.7 Ohm vs. 147 Ohm) and higher current rating (150 mA vs. 41 mA) are compatible with circuit design parameters.

Q: Is the 4590R-396J currently available?

A: Yes, the 4590R-396J is an active product with 848 pcs in stock, providing reliable supply availability for procurement.