ACSB-02-T Ferrite Bead Equivalent & Substitute Parts

Part Overview

The ACSB-02-T is a 90 Ohm ferrite bead manufactured by Abracon LLC, designed for EMI suppression in 2-SMD, J-Lead surface mount applications. This component operates at 100 MHz with a maximum current rating of 5A and DC resistance of 0.9mOhm. The product is classified as obsolete, necessitating identification of active equivalent components to maintain design continuity and ensure long-term supply availability.

Substiute Parts

ACSB-02-T

Abracon LLCIn Stock: 2140ACSB-02-T Datasheet

Current PartRFQ

7427931

Würth ElektronikIn Stock: 207467427931 Datasheet

MFR RecommendedRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution of the ACSB-02-T is determined by the following critical parameters:

Impedance matching at the specified frequency (100 MHz) is the primary electrical criterion. The substitute part must maintain impedance within acceptable tolerance of 90 Ohms to preserve EMI suppression performance.

DC resistance must remain at or below 0.9mOhm to ensure minimal signal attenuation and power loss in the circuit path.

Package and case type (2-SMD, J-Lead) must be identical to ensure mechanical compatibility with existing PCB layouts and assembly processes.

Physical dimensions, including height and length/width, must be compatible with the original footprint to prevent assembly conflicts.

Operating temperature range must encompass or exceed the original specification to ensure reliability across the intended application environment.

Compliance certifications (RoHS3, REACH Unaffected) must be maintained to satisfy regulatory requirements.

The substitute part 7427931 from Würth Elektronik meets these criteria with equivalent impedance (91 Ohms @ 100 MHz), matching DC resistance (0.9mOhm), identical package configuration, and compatible physical dimensions.

Parameter Comparison

Engineering Selection Recommendations

The 7427931 from Würth Elektronik is a direct substitute for the obsolete ACSB-02-T. Both components maintain ROHS3 compliance and REACH Unaffected status, satisfying regulatory requirements for current manufacturing standards.

The substitute part provides enhanced specifications in current rating (17A versus 5A) and operating temperature range (-55°C ~ 125°C versus -40°C ~ 85°C), offering improved performance margins without compromising the original design intent.

Impedance values are equivalent within normal engineering tolerance (90 Ohms versus 91 Ohms @ 100 MHz), and DC resistance specifications are identical. Physical dimensions are compatible with existing PCB layouts.

The active product status of the 7427931 ensures long-term supply availability and eliminates obsolescence risk associated with the original component.

Frequently Asked Questions (FAQ)

Q: Can the 7427931 be used as a direct replacement for the ACSB-02-T in existing designs?

A: Yes. The 7427931 meets all critical electrical and mechanical parameters. Impedance values are equivalent (90 Ohms versus 91 Ohms @ 100 MHz), DC resistance is identical (0.9mOhm), package configuration is identical (2-SMD, J-Lead), and physical dimensions are compatible. No design modifications are required.

Q: What is the impedance tolerance between the two parts?

A: The ACSB-02-T specifies 90 Ohms @ 100 MHz, while the 7427931 specifies 91 Ohms @ 100 MHz. This 1 Ohm difference represents approximately 1.1% variance and is within acceptable tolerance for ferrite bead EMI suppression applications.

Q: Are there any compliance or certification differences?

A: Both components are ROHS3 compliant and REACH Unaffected. Compliance certifications are equivalent, and both satisfy current regulatory requirements for electronic component manufacturing.

Q: Does the higher current rating of the 7427931 affect circuit performance?

A: No. The higher current rating (17A versus 5A) indicates improved thermal and electrical performance margins. This does not alter the component's impedance characteristics or EMI suppression function at the specified operating frequency.

Q: Are the physical dimensions compatible with the original PCB footprint?

A: Yes. Both components use identical 2-SMD, J-Lead packaging with matching height (0.106" / 2.70mm). Length and width dimensions are compatible (8.50mm length in both; width 3.10mm versus 3.00mm, a 0.10mm difference within standard PCB tolerance).

Q: What is the supply status difference between these parts?

A: The ACSB-02-T is classified as obsolete, indicating discontinued production. The 7427931 is active, ensuring continued availability and long-term supply security for new designs and production runs.