AFD57-18-11SN Equivalent & Substitute Parts

Part Overview

The AFD57-18-11SN is an 11-position circular connector plug with female sockets manufactured by TE Connectivity Deutsch Connectors. This component is designed for applications requiring bayonet-lock coupling in aviation, automotive, and military environments. The connector features crimp termination, gold-plated mating contacts, and operates across a temperature range of -55°C to 200°C.

The AFD57-18-11SN is currently discontinued at DiGi Electronics. Identifying equivalent substitute parts is necessary to maintain system compatibility and ensure continued availability for repair, maintenance, and new production applications.

Substiute Parts

AFD57-18-11SN

TE Connectivity Deutsch ConnectorsIn Stock: 725AFD57-18-11SN Datasheet

Current PartRFQ

PV76W18-11SL

ITT Cannon, LLCIn Stock: 989PV76W18-11SL Datasheet

SimilarRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution of the AFD57-18-11SN is determined by strict alignment of the following critical parameters:

Mechanical Compatibility:

• Number of positions: 11
• Shell size designation: 18-11
• Mounting type: Free Hanging (In-Line)
• Fastening type: Bayonet Lock
• Orientation: N (Normal)

Electrical Compatibility:

• Connector type: Plug with female sockets
• Termination method: Crimp
• Current rating: 13A
• Operating temperature range: -55°C ~ 200°C

Environmental & Material Specifications:

• Shell material: Aluminum or aluminum alloy
• Ingress protection: Environment Resistant
• Contact finish: Gold plating on mating surfaces

The substitute part PV76W18-11SL meets these critical parameters, enabling direct functional replacement in applications requiring 11-position circular connectors with bayonet coupling and crimp termination.

Parameter Comparison

Engineering Selection Recommendations

Availability Consideration: The AFD57-18-11SN is discontinued at DiGi Electronics with 713 pieces currently in stock. The PV76W18-11SL is an active product with 931 pieces in inventory, providing superior long-term availability for ongoing production and field replacement requirements.

Compliance Alignment: Both parts share identical RoHS non-compliant status and MSL rating of 1 (Unlimited), ensuring equivalent compliance profiles for applications with established material restrictions.

Shielding Difference: The AFD57-18-11SN features shielded construction, while the PV76W18-11SL is unshielded. This difference must be evaluated against specific application electromagnetic interference (EMI) requirements. In applications where shielding is not a functional requirement, the PV76W18-11SL provides direct substitution. In shielded-circuit applications, additional shielding provisions may be necessary.

Contact Inclusion: The PV76W18-11SL is supplied as a plug housing without contacts included. The AFD57-18-11SN includes female socket contacts. Substitution requires sourcing compatible crimp contacts separately to match the 11-position, 16-contact-size specification.

Frequently Asked Questions (FAQ)

Q: Can the PV76W18-11SL directly replace the AFD57-18-11SN in all applications?

A: The PV76W18-11SL provides mechanical and electrical compatibility for 11-position bayonet-lock circular connector applications. However, two factors require evaluation: (1) The PV76W18-11SL is unshielded, whereas the AFD57-18-11SN is shielded; applications requiring EMI shielding must address this difference. (2) The PV76W18-11SL is supplied as a housing without contacts; compatible crimp contacts must be sourced separately.

Q: What is the significance of the shell size designation 18-11?

A: The shell size 18-11 specifies the physical dimensions and contact arrangement of the circular connector. Both the AFD57-18-11SN and PV76W18-11SL share this designation, ensuring mechanical interchangeability in mating applications.

Q: Are the crimp contacts from the AFD57-18-11SN compatible with the PV76W18-11SL housing?

A: Both parts specify crimp termination with contact size 16. Existing crimp contacts from the AFD57-18-11SN are compatible with the PV76W18-11SL housing, provided they meet the 11-position, 16-contact-size specification.

Q: What is the difference between the shell finishes on these two parts?

A: The AFD57-18-11SN features nickel shell finish, while the PV76W18-11SL features chromate over cadmium finish. Both finishes provide corrosion resistance suitable for environment-resistant applications. The choice between them depends on specific environmental exposure and compatibility requirements in the application.

Q: Why is the PV76W18-11SL listed as a plug housing rather than a complete plug?

A: The PV76W18-11SL is manufactured as a connector housing assembly without pre-installed contacts. This configuration allows flexibility in contact selection and termination during assembly. The AFD57-18-11SN is supplied as a complete plug with female socket contacts pre-installed.

Q: Are both parts suitable for aviation, automotive, and military applications?

A: The AFD57-18-11SN is explicitly rated for aviation, automotive, and military applications. The PV76W18-11SL is manufactured to MIL-DTL-26482 series standards (implied by the PV series designation and bayonet-lock coupling), supporting use in these application categories. Specific application requirements and qualification standards must be verified against system specifications.