DPX257S-57S-33B-001 – ITT Cannon DPX2 Series ARINC Connector
Available now for order through the Aerospace and Avionics Interconnect Marketplace.
Overview Section
The DPX257S-57S-33B-001 is a high-reliability, dual-shell blind-mate rectangular connector from the ITT Cannon DPX series. This connector is a foundational component in ARINC 404 avionics installations, specifically designed for rack-and-panel environments. In these applications, the connector is typically mounted at the rear of an avionics tray, allowing the aircraft's radio or navigation unit to "blind-mate" automatically as it is slid into the rack.
The part number indicates a DPX2 (Dual-shell) configuration. Unlike the single-shell DPXB, the DPX2 allows for a larger number of contacts across two distinct cavities. This specific unit features two 57-contact inserts for a total of 114 signal positions, utilizing Socket (S) contacts. It is engineered to handle the high-vibration and rigorous thermal cycles of commercial and military flight decks.
Key Features Section
Dual-Shell Blind-Mate Design: Incorporates two insert cavities in a single rugged housing, providing high-density connectivity for complex avionics suites.
114-Contact Capacity: Features two 57-contact inserts (57S/57S), providing extensive signal throughput for data-heavy flight management and communication systems.
Self-Aligning Architecture: Designed with floating mounting capabilities and guide pins to ensure perfect contact alignment even when the technician cannot see the rear of the rack.
Socket (S) Contacts: Configured with female socket contacts, typically used on the "live" or "hot" side of the connection for increased safety and protection of the contact pins.
ARINC 404 Compliant: Fully compatible with industry-standard avionics trays and mounting racks used globally in civil and military aviation.
Environmental and Vibration Stability: Built to withstand the constant structural vibration and pressure changes of the aerospace environment.
Technical Specifications Section
Part Number: DPX257S-57S-33B-001
Manufacturer: ITT Cannon
Series: DPX2 (ARINC 404)
Shell Style: Dual-Shell Rectangular
Insert Arrangement A: 57 (Socket contacts)
Insert Arrangement B: 57 (Socket contacts)
Total Contacts: 114
Contact Gender: Socket (S)
Modification Code: 001 (Standard mounting/hardware variation)
Operating Temperature: -65C to +125C
Material: Aluminum alloy shell with high-grade dielectric inserts and gold-plated contacts.
Applications Section
Main Avionics Bays: The primary interconnect for flight computers, autopilot processors, and centralized data units.
Radar and Weather Systems: Routing high-density signals for nose-mounted radar transceivers.
Communication Suites: Providing the rear interface for rack-mounted VHF, HF, and SATCOM radios.
Flight Data Management: Securely linking data acquisition units to the aircraft's primary sensors.
Why Choose the DPX257S-57S-33B-001?
The DPX257S-57S-33B-001 is the industry standard for mission-critical rack integration. In aerospace, the reliability of the physical connection is as vital as the software it supports. The DPX2 series is world-renowned for its mechanical durability and contact retention. Choosing this ITT Cannon assembly ensures that your avionics installation meets all ARINC 404 specifications, providing a standardized, fail-safe interface that facilitates easy component swapping during maintenance without risking damage to the aircraft’s wiring harness.
The technical superiority of the DPX257S-57S-33B-001 lies in its Polarization and Contact Integrity. The connector includes a programmable polarization system that can be set to various positions using specialized posts. This ensures that a radio unit cannot be accidentally plugged into a navigation unit's slot, preventing electrical damage. Furthermore, the 57-contact inserts utilize high-reliability copper alloy sockets with gold-over-nickel plating, ensuring that even after hundreds of mating cycles, the electrical resistance remains low and the signal remains clean of "noise" or intermittent dropouts.
Note: The DPX257S-57S-33B-001 is a complex interconnect component. Installation must be performed by a certified avionics technician. Ensure the polarization posts on the connector match the settings on the avionics tray before attempting to mate the units. Always use the specified M22520 series tools for any contact maintenance or wiring.
Documentation
ITT Cannon DPX Series Catalog: Essential for verifying dimensions, contact sizes, and tool requirements.
ARINC 404 Specification: Standard defining the dimensions and performance of the rack-and-panel interface.