Switchcraft A3M Circular Connector - Equivalent & Substitute Parts

Part Overview

The Switchcraft A3M is a 3-position circular connector receptacle with male pins, designed for audio and instrumentation applications. This connector features solder cup termination, latch lock fastening, and includes integrated backshell, cable clamp, and strain relief. The part is currently active in production with 1131 units in stock. Substitute parts are identified when equivalent electrical specifications, mechanical compatibility, and connector geometry align with the original design requirements.

Substiute Parts

A3M

Switchcraft Inc.In Stock: 1180A3M Datasheet

Current PartRFQ

AC3MM

Amphenol AudioIn Stock: 1090AC3MM Datasheet

SimilarRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitute parts for the Switchcraft A3M circular connector are identified based on the following critical parameters:

• Connector Configuration: Receptacle type with male pins, 3-position XLR shell size
• Termination Compatibility: Solder cup termination for direct PCB or cable integration
• Mechanical Interface: Free hanging in-line mounting with keyed orientation
• Electrical Ratings: Current capacity and voltage specifications suitable for audio and instrumentation circuits
• Material and Finish Specifications: Zinc shell with nickel finish and silver-plated mating contacts
• Regulatory Compliance: ROHS3 compliance and REACH unaffected status

The Amphenol Audio AC3MM meets these substitution criteria through equivalent XLR 3-position receptacle design, solder cup termination, and matching material specifications.

Parameter Comparison

Engineering Selection Recommendations

Both the Switchcraft A3M and Amphenol Audio AC3MM connectors are active production parts with ROHS3 compliance and REACH unaffected status. Selection between these parts is based on availability and supply chain requirements rather than functional differences. The Amphenol Audio AC3MM provides additional ingress protection rating (IP40) and specified operating temperature range (-25°C ~ 75°C), which may be advantageous in environmental applications. Both parts satisfy the electrical and mechanical requirements for audio and instrumentation circuit integration.

Frequently Asked Questions (FAQ)

Q: Can the Amphenol Audio AC3MM directly replace the Switchcraft A3M in existing designs?

A: Yes. Both connectors share identical XLR 3-position receptacle configuration, male pin orientation, solder cup termination, and keyed mechanical interface. The fastening mechanism differs slightly (latch lock versus latch holder), but both provide equivalent mechanical retention.

Q: What are the key compatibility factors for XLR 3-position circular connector substitution?

A: Substitution requires matching connector type (receptacle with male pins), position count (3), shell size (XLR), termination method (solder cup), mounting style (free hanging in-line), and orientation (keyed). Material specifications and finish must also align to ensure mating surface compatibility and environmental durability.

Q: Are there electrical rating differences between these parts?

A: The Switchcraft A3M specifies 15A current rating and 125VAC voltage rating. The Amphenol Audio AC3MM does not provide explicit current and voltage ratings in the available data. Verify AC3MM electrical specifications with the manufacturer for applications requiring defined electrical performance parameters.

Q: What is the significance of the cable opening specification?

A: The cable opening range (0.210" ~ 0.300" or 5.33mm ~ 7.62mm) defines the acceptable cable diameter for proper strain relief and backshell engagement. This mechanical parameter must be matched during substitution to ensure proper cable retention and connector integrity.

Q: Do both parts meet the same regulatory requirements?

A: Yes. Both the Switchcraft A3M and Amphenol Audio AC3MM are ROHS3 compliant and REACH unaffected, with identical ECCN (EAR99) and HTSUS (8536.69.4020) classifications.