70F682AF-RC Equivalent & Substitute Parts

Part Overview

The 70F682AF-RC is a 68 mH unshielded drum core wirewound inductor manufactured by Bourns Inc., rated for 34 mA maximum current with 215 Ohm DC resistance. This through-hole axial component operates across -55°C to 105°C and is compliant with ROHS3 and REACH Unaffected standards. The product is currently obsolete, making identification of functionally equivalent alternatives essential for ongoing system support and component procurement.

Substiute Parts

70F682AF-RC

Bourns Inc.In Stock: 105470F682AF-RC Datasheet

Current PartRFQ

B82144A2686J000

EPCOS - TDK ElectronicsIn Stock: 1107B82144A2686J000 Datasheet

SimilarRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution eligibility for the 70F682AF-RC is determined by the following critical parameters:

• Inductance value of 68 mH with ±5% tolerance
• Ferrite drum core construction, unshielded configuration
• Through-hole axial mounting type
• Operating temperature range compatibility
• ROHS3 compliance status

The B82144A2686J000 qualifies as a substitute based on matching inductance (68 mH), core material (ferrite), shielding type (unshielded), construction method (drum core wirewound), and mounting configuration (through-hole axial). Variations in current rating, DC resistance, and physical dimensions are acceptable within the scope of component substitution when the primary electrical characteristics align.

Parameter Comparison

Engineering Selection Recommendations

The B82144A2686J000 is an active product from EPCOS - TDK Electronics and represents a viable substitute for the obsolete 70F682AF-RC. Both components maintain ROHS3 compliance and share identical inductance specifications with matching tolerance bands.

The substitute exhibits a lower current rating (25 mA versus 34 mA) and higher DC resistance (290 Ohm Max versus 215 Ohm Max). These differences require circuit-level evaluation to confirm compatibility with existing design parameters. The extended operating temperature range of the substitute (-55°C to 125°C) provides additional thermal margin compared to the original component.

Physical dimensions differ between the two components, necessitating PCB layout verification prior to implementation. The substitute is supplied in Tape & Reel packaging, supporting automated assembly processes.

Frequently Asked Questions (FAQ)

Q: Can the B82144A2686J000 directly replace the 70F682AF-RC in existing designs?

A: Direct replacement requires verification that circuit current demands do not exceed 25 mA and that the higher DC resistance (290 Ohm Max) does not adversely affect circuit performance. Physical dimensions must be confirmed compatible with PCB layout constraints.

Q: What are the primary differences between these components?

A: Both components share 68 mH inductance and ferrite drum core construction. The substitute has lower current rating, higher DC resistance, smaller physical dimensions, and extended operating temperature range. The original is obsolete; the substitute is in active production.

Q: Are both components RoHS compliant?

A: Yes, both the 70F682AF-RC and B82144A2686J000 are ROHS3 compliant. The substitute is REACH Affected, while the original is REACH Unaffected.

Q: What packaging formats are available?

A: The 70F682AF-RC was supplied in standard packaging. The B82144A2686J000 is available in Tape & Reel format, suitable for automated assembly operations.

Q: How do the Q factors compare between these inductors?

A: The 70F682AF-RC exhibits Q of 57 @ 79 kHz. The B82144A2686J000 exhibits Q of 40 @ 79.6 kHz. This difference reflects variations in core material characteristics and construction methods between manufacturers.