AFD57-22-55PX Equivalent & Substitute Parts

Part Overview

The AFD57-22-55PX is a 55-position circular connector plug with male pins, manufactured by TE Connectivity Deutsch Connectors. This connector is designed for applications requiring bayonet-lock fastening, crimp termination, and shielded construction. The part operates across a temperature range of -55°C to 200°C and carries a current rating of 7.5A.

This part is discontinued at DiGi Electronics, necessitating identification of functionally equivalent alternatives for ongoing procurement and system integration. The connector follows MIL-DTL-26482 G Series II specifications and is classified as RoHS non-compliant with unlimited moisture sensitivity rating (MSL 1).

Substiute Parts

AFD57-22-55PX

TE Connectivity Deutsch ConnectorsIn Stock: 926AFD57-22-55PX Datasheet

Current PartRFQ

KPSE6E2255PXF42

ITT Cannon, LLCIn Stock: 842KPSE6E2255PXF42 Datasheet

SimilarRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution of the AFD57-22-55PX is determined by strict equivalence across the following critical parameters:

Mandatory Matching Parameters:

• Connector type: Plug with male pins
• Position count: 55 positions
• Shell size designation: 22-55
• Termination method: Crimp
• Fastening mechanism: Bayonet lock
• Mounting configuration: Free hanging (in-line)
• Current rating: 7.5A minimum
• Contact finish: Gold plating on mating surfaces
• Primary construction material: Metal

Operational Compatibility Parameters:

• Operating temperature range must encompass or exceed the original specification
• Ingress protection rating must meet or exceed environmental requirements
• RoHS compliance status must be documented

The KPSE6E2255PXF42 manufactured by ITT Cannon, LLC satisfies all mandatory matching parameters and is therefore classified as a direct functional equivalent.

Parameter Comparison

Engineering Selection Recommendations

Primary Substitute: KPSE6E2255PXF42

The KPSE6E2255PXF42 is the designated equivalent for the discontinued AFD57-22-55PX based on matching core electrical and mechanical specifications. Both connectors share identical position count (55), shell size (22-55), termination method (crimp), fastening mechanism (bayonet lock), current rating (7.5A), and contact finish (gold).

Critical Considerations for Implementation:

1. Temperature Derating: The KPSE6E2255PXF42 operates to a maximum of 125°C, compared to the AFD57-22-55PX maximum of 200°C. Applications requiring sustained operation above 125°C require thermal analysis and potential design modification.

2. Shielding Difference: The AFD57-22-55PX provides shielded construction, while the KPSE6E2255PXF42 is unshielded. Systems dependent on electromagnetic interference mitigation must evaluate the impact of this difference on signal integrity and regulatory compliance.

3. Environmental Protection: The KPSE6E2255PXF42 provides IP67 rating (dust tight, waterproof), exceeding the environment-resistant classification of the AFD57-22-55PX. This represents an enhancement for applications in harsh environmental conditions.

4. Product Availability: The KPSE6E2255PXF42 maintains active production status with 816 pieces in stock, ensuring supply continuity for the AFD57-22-55PX discontinuation.

5. Compliance Alignment: Both connectors share identical RoHS non-compliance status and ECCN/HTSUS classifications, maintaining regulatory consistency in procurement and documentation.

Frequently Asked Questions (FAQ)

Q: Can the KPSE6E2255PXF42 directly replace the AFD57-22-55PX in all applications?

A: The KPSE6E2255PXF42 provides functional equivalence for applications operating within 125°C maximum temperature and not requiring shielded construction. Applications exceeding these parameters require design evaluation.

Q: What is the significance of the shielding difference between these connectors?

A: The AFD57-22-55PX includes shielded construction for electromagnetic interference suppression. The KPSE6E2255PXF42 is unshielded. Systems sensitive to EMI or operating in electromagnetically noisy environments must assess whether additional shielding measures are necessary.

Q: Are the crimp contact specifications identical between these parts?

A: Both connectors use crimp termination with copper alloy contacts and gold mating finish. The KPSE6E2255PXF42 specifies contact finish thickness of 50.0µin (1.27µm). Crimp tool compatibility and contact gauge specifications must be verified against your assembly documentation.

Q: How do the shell materials differ?

A: The AFD57-22-55PX uses aluminum with nickel finish. The KPSE6E2255PXF42 uses aluminum alloy with olive drab chromate over cadmium finish. Both provide equivalent structural integrity; the finish difference reflects different environmental protection strategies.

Q: What is the voltage rating difference?

A: The AFD57-22-55PX does not specify a voltage rating in the provided documentation. The KPSE6E2255PXF42 is rated for 600VAC and 850VDC. Verify voltage requirements against your system specifications.

Q: Are both connectors suitable for military and aviation applications?

A: The AFD57-22-55PX is specified for aviation, automotive, and military applications. The KPSE6E2255PXF42 is specified for industrial and military applications. Application-specific qualification requirements must be confirmed with your procurement and engineering documentation.

Q: What is the insert material difference?

A: The AFD57-22-55PX uses plastic insert material. The KPSE6E2255PXF42 uses polychloroprene insert material. Both provide equivalent electrical isolation and mechanical positioning for the 55-position contact array.

Q: Is the bayonet lock mechanism identical?

A: Both connectors use bayonet lock fastening with orientation X. Mating connector compatibility must be verified to ensure proper engagement and retention.