4554R-680K Equivalent & Substitute Parts

Part Overview

The 4554R-680K is a 68 µH unshielded through-hole inductor manufactured by API Delevan Inc., rated for 1.2 A continuous current with a maximum DC resistance of 210mOhm. This component is designed for applications requiring fixed inductance in radial, vertical cylinder configuration. The part maintains Active product status with full RoHS3 compliance and REACH unaffected certification. Substitute parts are identified when equivalent electrical performance and mechanical compatibility can be maintained within the specified parameter tolerances.

Substiute Parts

4554R-680K

API Delevan Inc.In Stock: 8454554R-680K Datasheet

Current PartRFQ

RLB9012-680KL

Bourns Inc.In Stock: 1763RLB9012-680KL Datasheet

SimilarRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution eligibility for the 4554R-680K is determined by strict equivalence across the following critical parameters:

• Inductance value: 68 µH with ±10% tolerance
• Current rating: minimum 1.2 A
• DC resistance: maximum 210mOhm
• Mounting type: Through Hole
• Package configuration: Radial, Vertical Cylinder
• Core material: Ferrite
• Shielding: Unshielded
• Operating temperature range: must encompass or exceed -40°C ~ 85°C
• Self-resonant frequency: 4.9 MHz
• Q factor: 30 @ 2.52MHz

The RLB9012-680KL meets all substitution criteria with equivalent electrical specifications and compatible mechanical form factor.

Parameter Comparison

Engineering Selection Recommendations

Both the 4554R-680K and RLB9012-680KL maintain Active product status with full regulatory compliance. The RLB9012-680KL provides enhanced current capacity (1.36 A versus 1.2 A) and an extended operating temperature range (-55°C ~ 125°C versus -40°C ~ 85°C), making it suitable for applications requiring higher thermal or current margins. Both components carry ROHS3 compliance and REACH unaffected certification, ensuring regulatory alignment for industrial and commercial applications.

Frequently Asked Questions (FAQ)

Q: Can the RLB9012-680KL directly replace the 4554R-680K in existing designs?

A: Yes. Both inductors share identical inductance (68 µH), tolerance (±10%), DC resistance (210mOhm max), Q factor (30 @ 2.52MHz), and self-resonant frequency (4.9 MHz). The RLB9012-680KL has a higher current rating (1.36 A) and wider operating temperature range, making it functionally compatible for the 4554R-680K application envelope.

Q: Are there physical dimension differences between these parts?

A: Minor dimensional variations exist. The 4554R-680K has a diameter of 0.340" (8.64mm) and seated height of 0.433" (11.00mm). The RLB9012-680KL has a diameter of 0.354" (9.00mm) and seated height of 0.480" (12.20mm). Both maintain radial, vertical cylinder configuration compatible with standard through-hole PCB layouts, though board space constraints should be verified.

Q: Do both parts meet the same regulatory requirements?

A: Yes. Both the 4554R-680K and RLB9012-680KL are ROHS3 compliant and REACH unaffected, meeting equivalent regulatory standards for industrial and commercial applications.

Q: What is the difference in packaging between these parts?

A: The 4554R-680K is supplied in Bulk packaging, while the RLB9012-680KL is supplied in Tray packaging. This affects handling and storage but does not impact electrical or mechanical performance.

Q: Are there differences in core construction?

A: The 4554R-680K uses a standard ferrite core construction. The RLB9012-680KL uses a drum core, wirewound ferrite construction. Both achieve equivalent electrical specifications and are functionally interchangeable within the specified parameter tolerances.