FB20009-3B Ferrite Bead Equivalent & Substitute Parts

Part Overview

The FB20009-3B is a 440 Ohm axial ferrite bead manufactured by Bourns Inc., designed for single-line EMI filtering applications with a maximum current rating of 5A. This component is classified as obsolete, making identification of suitable alternatives essential for ongoing production and maintenance applications. Direct substitutes and parametric equivalents are available from the same manufacturer series, offering improved compliance status and continued availability.

Substiute Parts

FB20009-3B

Bourns Inc.In Stock: 1184FB20009-3B Datasheet

Current PartRFQ

FB20009-3B-RC

Bourns Inc.In Stock: 6630FB20009-3B-RC Datasheet

DirectRFQ

FB20019-4B-RC

Bourns Inc.In Stock: 939FB20019-4B-RC Datasheet

Parametric EquivalentRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution for the FB20009-3B is determined by the following critical parameters: impedance value at 100 MHz, number of lines, current rating, package type, mounting method, and physical dimensions. Two substitute options are available:

Direct Substitute (FB20009-3B-RC): Identical electrical specifications and physical dimensions. Differs only in packaging format (Bulk vs. standard) and product status (Active vs. Obsolete). RoHS compliance is improved.

Parametric Equivalent (FB20019-4B-RC): Maintains identical current rating, package type, mounting method, and physical dimensions. Impedance varies by 10 Ohms (450 Ohms vs. 440 Ohms @ 100 MHz), representing a 2.3% deviation within typical ferrite bead tolerance ranges for this product category.

Parameter Comparison

Engineering Selection Recommendations

FB20009-3B-RC is the primary substitute for the obsolete FB20009-3B. This part maintains identical electrical and mechanical specifications while offering Active product status and ROHS3 compliance, eliminating regulatory constraints associated with the original component.

FB20019-4B-RC serves as a parametric equivalent when impedance tolerance of ±2.3% is acceptable within circuit design margins. This option provides the same mechanical compatibility and current handling capability, with improved compliance status.

Both substitute parts are manufactured by Bourns Inc. and maintain compatibility with through-hole PCB assembly processes. Selection between the direct substitute and parametric equivalent depends on circuit impedance requirements and design tolerance specifications.

Frequently Asked Questions (FAQ)

Q: Can FB20009-3B-RC be used as a direct replacement for FB20009-3B?

A: Yes. FB20009-3B-RC is electrically and mechanically identical to FB20009-3B, with the same 440 Ohm impedance at 100 MHz, 5A current rating, and axial through-hole package. The primary difference is product status (Active vs. Obsolete) and improved RoHS3 compliance.

Q: What is the impedance difference between FB20009-3B and FB20019-4B-RC?

A: FB20019-4B-RC has an impedance of 450 Ohms @ 100 MHz compared to 440 Ohms for FB20009-3B, a 10 Ohm or 2.3% variation. Both parts share identical current ratings, package dimensions, and mounting specifications.

Q: Are the physical dimensions identical across all three parts?

A: Yes. All three parts measure 0.236" Dia x 0.394" L (5.99mm x 10.01mm) and use axial through-hole mounting, ensuring direct PCB compatibility without layout modifications.

Q: What compliance improvements are offered by the substitute parts?

A: Both FB20009-3B-RC and FB20019-4B-RC are ROHS3 compliant, whereas the original FB20009-3B is RoHS non-compliant. All three parts maintain REACH Unaffected status and EAR99 export classification.

Q: Which substitute should be selected for new designs?

A: FB20009-3B-RC is recommended for designs requiring exact impedance matching to the original specification. FB20019-4B-RC is suitable when circuit design tolerances permit a ±2.3% impedance variation and parametric equivalence is acceptable.