A4FBAU Equivalent & Substitute Parts

Part Overview

The A4FBAU is a 4-position circular connector plug with female sockets manufactured by Switchcraft Inc. in the Q-G® A series. This component is designed for audio and instrumentation applications requiring solder cup termination with latch lock fastening. The A4FBAU is currently classified as obsolete, making identification of compatible substitute parts essential for ongoing system maintenance and new design implementations.

Substiute Parts

A4FBAU

Switchcraft Inc.In Stock: 1210A4FBAU Datasheet

Current PartRFQ

A4FBXAU

Switchcraft Inc.In Stock: 1011A4FBXAU Datasheet

DirectRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution of the A4FBAU is determined by strict equivalence across the following critical parameters:

• Connector type and gender (Plug, Female Sockets)
• Number of positions (4)
• Shell size designation (XLR)
• Termination method (Solder Cup)
• Fastening mechanism (Latch Lock)
• Electrical ratings (10A, 125VAC)
• Mechanical compatibility (Cable opening range, mounting type)
• Material specifications (Stainless steel shell, gold-plated contacts)

The A4FBXAU meets all these criteria and is classified as a direct substitute. Both parts share identical mechanical and electrical specifications within the Q-G® A series, with the primary distinction being product status and compliance certification.

Parameter Comparison

Engineering Selection Recommendations

The A4FBXAU is the direct equivalent substitute for the obsolete A4FBAU. Both components are manufactured by Switchcraft Inc. within the same Q-G® A series and maintain identical mechanical and electrical specifications.

The A4FBXAU offers the advantage of active product status, ensuring continued availability and supply chain reliability. Additionally, the A4FBXAU carries ROHS3 compliance certification, whereas the A4FBAU is RoHS non-compliant. For applications subject to RoHS regulatory requirements, the A4FBXAU is the appropriate selection.

Both parts share equivalent REACH and ECCN classifications (EAR99), maintaining consistent export and regulatory compliance profiles.

Frequently Asked Questions (FAQ)

Q: Can the A4FBXAU be used as a direct replacement for the A4FBAU in existing designs?

A: Yes. The A4FBXAU is mechanically and electrically equivalent to the A4FBAU. All critical parameters—connector type, position count, shell size, termination method, fastening mechanism, electrical ratings, and material specifications—are identical between the two parts.

Q: What is the primary difference between the A4FBAU and A4FBXAU?

A: The A4FBAU is classified as obsolete, while the A4FBXAU maintains active product status. Additionally, the A4FBXAU is ROHS3 compliant, whereas the A4FBAU is RoHS non-compliant. Both parts are otherwise functionally equivalent.

Q: Are there packaging differences between these parts?

A: The A4FBAU is supplied in standard packaging, while the A4FBXAU is supplied in bulk packaging. This distinction does not affect component functionality or compatibility.

Q: What cable opening range is supported by both parts?

A: Both the A4FBAU and A4FBXAU support cable openings between 0.210" and 0.300" (5.33mm to 7.62mm), ensuring compatibility with standard cable assemblies within this specification range.

Q: Are both parts suitable for audio and instrumentation applications?

A: Yes. Both the A4FBAU and A4FBXAU are specified for audio and instrumentation applications and carry identical electrical ratings of 10A at 125VAC.