ACSB-03-T Ferrite Bead Equivalent & Substitute Parts

Part Overview

The ACSB-03-T is a 47 Ohm ferrite bead manufactured by Abracon LLC, designed for surface mount applications with a 2-SMD J-Lead package configuration. This component provides electromagnetic interference (EMI) suppression at 100 MHz with a maximum current rating of 5A and operates across the temperature range of -40°C to 85°C. The ACSB-03-T is classified as obsolete, making identification of equivalent substitute parts essential for ongoing design support and procurement continuity.

Substiute Parts

ACSB-03-T

Abracon LLCIn Stock: 838ACSB-03-T Datasheet

Current PartRFQ

7427930

Würth ElektronikIn Stock: 480797427930 Datasheet

MFR RecommendedRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution of the ACSB-03-T is determined by the following critical parameters:

• Impedance value at 100 MHz (47 Ohms nominal)
• Package configuration (2-SMD, J-Lead surface mount)
• Physical dimensions and height compatibility (0.106" maximum height)
• Current handling capability (minimum 5A)
• Operating temperature range coverage (-40°C to 85°C minimum)
• RoHS3 compliance and MSL rating

The Würth Elektronik 7427930 qualifies as a manufacturer-recommended substitute based on matching impedance specification at 100 MHz, identical package type, compatible physical dimensions, and superior current rating capability. The substitute maintains full RoHS3 compliance and MSL Level 1 rating.

Parameter Comparison

Engineering Selection Recommendations

The 7427930 from Würth Elektronik is the manufacturer-recommended substitute for the obsolete ACSB-03-T. Both components maintain ROHS3 compliance and MSL Level 1 rating, ensuring regulatory and environmental compatibility. The substitute offers an extended operating temperature range (-55°C to 125°C versus -40°C to 85°C) and significantly higher current capacity (16A versus 5A), providing enhanced performance margins for the same package footprint and mounting configuration. The impedance specification differs by 5 Ohms (42 Ohms versus 47 Ohms at 100 MHz), which falls within typical ferrite bead tolerance ranges for EMI suppression applications. Physical dimensions remain compatible with existing PCB layouts, with negligible width variation (3.00mm versus 3.10mm).

Frequently Asked Questions (FAQ)

Q: Can the 7427930 be used as a direct replacement for the ACSB-03-T in existing designs?

A: Yes. Both components share identical package configuration (2-SMD, J-Lead), mounting type (surface mount), and height specification (0.106" maximum). Physical dimensions are compatible with existing PCB layouts. The substitute maintains the same regulatory compliance status (ROHS3, MSL Level 1).

Q: What is the significance of the impedance difference between 47 Ohms and 42 Ohms?

A: The 5 Ohm difference represents approximately 10.6% variation from the original specification. This falls within standard ferrite bead tolerance ranges and does not preclude substitution for EMI suppression applications where impedance values are typically specified with ±20% tolerance bands.

Q: Does the higher current rating of the 7427930 affect compatibility?

A: No. The 16A current rating of the substitute exceeds the 5A requirement of the original design, providing additional thermal and electrical margin without introducing compatibility issues. Higher current capacity does not degrade performance in lower-current applications.

Q: Are there any temperature range considerations for substitution?

A: The substitute operates across -55°C to 125°C, which encompasses the original operating range of -40°C to 85°C. This extended range provides additional design flexibility and environmental robustness.

Q: What is the packaging difference between the original and substitute?

A: The ACSB-03-T is supplied in Tape & Reel (TR) packaging, while the 7427930 is available in Cut Tape (CT) and Digi-Reel® packaging. Both packaging formats are standard for surface mount component distribution and do not affect component performance or PCB assembly compatibility.