Unraveling the BACC45 & BACC63 Variants

The C48 (Omega) Series is a reliable and versatile solution for various applications and is qualified to MIL-C-26500/BACC 45 & 63 standards. Because each BACC45 & BACC63 variant contributes intrinsic benefits to the aerospace sector, it’s important to have an in-depth understanding of the benefits during the component selection process. Air Electro’s robust stock position on these connectors ensures a readily available supply and demonstrates the commitment to excellence in aerospace connectivity.

Understanding the C48 Series

The C48 Series connectors, often referred to as Omega connectors, have earned their place in the aerospace industry by meeting stringent MIL-C-26500 standards. This series not only addresses general-purpose requirements but also tackles unique challenges related to shielding, environmental sealing, fluid resistance, and vibration. Moreover, it complies with various Boeing specifications, showcasing its adaptability to diverse product demands.

Are BACC45, BACC 63, and C48 interchangeable?

Yes, BACC45, BACC63, and C48 connectors are interchangeable to a certain extent, as they all belong to the same C48 Series qualified to MIL-C-26500 standards. The interchangeability largely depends on the specific requirements of the aerospace application and the variants within the C48 Series.

Key points to consider regarding interchangeability:

Common Qualification: As mentioned above, BACC45, BACC63, and C48 connectors share a common qualification under MIL-C-26500 standards. This qualification ensures they meet certain performance and reliability criteria required for aerospace applications.

Boeing Specifications: BACC45 and BACC63 are specific Boeing callouts within the C48 Series, indicating variations tailored to meet Boeing’s specifications for particular applications. The C48 connectors encompass a broader range, including these Boeing-qualified variants.

C48 Series Variants: The C48 Series includes a variety of part number variants. While they have different part numbers, they are part of the same series, indicating compatibility and interchangeability for specific applications.

Application-Specific Considerations: Interchangeability depends on the specific requirements of the aerospace application. Factors such as contact sizes, coupling styles (bayonet and threaded), material finishes, and environmental sealing may vary among the different variants. It is crucial to match the connector variant to the specific needs of the application.

MIL-C-26500 C48 Series In-Depth Overview

Power contact sizes include 20, 16, and 12, with additional coax contacts available in sizes 12 and 8. The contacts feature a crimp-front release mechanism, ensuring a secure and efficient connection.

Coupling Styles and Environmental Sealing

The C48 Series connectors provide flexibility with two coupling styles: Bayonet and Threaded Plugs and Receptacles.

Both styles inter-mate and maintain compatibility with MIL-DTL-83723 connectors, except shell size 8 threaded – which does not mate with M83723 threaded. This means adaptability in various aerospace applications since the connectors are environmentally sealed.

Material Options and Finishes

Shells are available in aluminum, with anodized finishes and stainless-steel options, allowing for customization based on specific application requirements. The optional electroless nickel/cadmium over nickel finishes add an extra layer of protection.

Rubber, silicone, and fluorosilicone dielectrics ensure robust insulation, while glass-filled epoxy inserts provide structural integrity. The connectors are designed to withstand temperature extremes, ranging from +200°C / 392°F to -55°C / -65°F. Ozone resistance, temperature life, moisture resistance, and dielectric strength are meticulously tested, adhering to stringent MIL-STD-202 standards.

Contact Specifications and Durability

The C48 Series connectors boast a range of contact sizes, accommodating wire sizes 24 through 12 AWG. Current ratings vary based on the contact size, ensuring optimal performance in diverse applications. Additionally, the connectors exhibit excellent durability, with threaded variants enduring 200 mating cycles and bayonet variants enduring 500 mating cycles.

Vibration, Shock, and Firewall Conformance

The connectors undergo rigorous testing to meet industry standards, including vibration testing at 20 g’s for 12 hours (sinusoidal) and self-lock testing at 39.6 g’s RMS for 84 hours (random). Shock resistance is rated at an impressive 50 g’s, ensuring these connectors can withstand the dynamic challenges of aerospace environments.

Cinch Series CN0966 and Design Features

The expanded Cinch C48 product family introduces variants such as CN0966, C0909, CN1020, CN0967, CN1021, and more, each tailored to specific requirements. Notable design features include positive location captivated inserts, insert face seals, pin contacts conforming to MIL-C-39029/31 standards, contact pressuring seals, and anti-deflection discs, among others.

Part Number Variants

These include:

• Boeing callouts BACC45 and BACC63
• MIL callout MS2426X
• Cinch commercial callouts
  • C48
  • C0909A
  • CN0966B
  • CN0966A
  • CN0967C
  • CN1020A
  • CN1021A

Each variant caters to specific needs and specifications, allowing for precise customization based on the application at hand.

Key Features and Benefits

The C48 Series connectors boast a range of features that contribute to their superior performance in aerospace applications:

• Alternate Key/Keyway Positions: Preventing cross-mating of adjacent connectors with the same insert arrangement, ensuring a secure and reliable connection.
• Positive Alignment of Pin Contacts: Achieved by lead-in chamfers of closed-entry hard socket inserts, especially beneficial for select Boeing products.
• Elastomer Grommet: This feature seals over a wide range of wire diameters and includes a triple-wire seal in each cavity, providing robust environmental protection.
• Front Release Crimped Contact Retainer System: This system features a retaining clip captivated by molded-in shoulders of each contact cavity in the insulator, resulting in stable contact even in demanding conditions.

Contacts and Specifications

Understanding the contact options available is crucial for optimal performance. The C48 Series accommodates various contact sizes, wire sizes, and current ratings.

• Contact Size 20: Suitable for wire sizes 24, 22, and 20 AWG, with maximum current ratings of 3.0, 5.0, and 7.5 Amps, respectively.
• Contact Size 16: Ideal for wire sizes 18 and 16 AWG, with corresponding maximum current ratings.
• Contact Size 12: Designed for wire sizes 14 and 12 AWG, with specified maximum current ratings.

For those seeking a quick reference, here are some key specifications for the C48 Series connectors:

• Sealing: IP66
• Shielding: Yes
• Connector Type: Circular
• Connector Style: Plug
• Mounting Type: Cable
• Contacts: 24
• Contact Style: Socket
• Termination Method: Crimp
• Crimp Wire Gauge: 24, 22, 20, 18
• Insert Arrangement: 16-24
• Contact Size: 24#20
• Contact Material: Copper Alloy
• Contact Plating: 50 microinches Gold Plate
• Shell Material: Aluminum Alloy
• Shell Plating: Anodized
• Shell Color: Black
• Insert Material: Glass Filled Epoxy
• Grommet & Seals Material: Silicone/Fluorosilicone
• Amperage Rating: 7.5A
• Operating Voltage AC V RMS Max: 1500
• Operating Temperature °F (°C): -65 to +392 (-55 to +200)
• Contact Mating Life: 200
• Insert Rotation/Keying: 8
• Export Class: EAR / EAR99
• RoHS: No
• Weight: 0.10230 lbs / 46.43560 g

Key Takeaways:

• The C48 (Omega) Series is a reliable and versatile solution for various applications and is qualified to MIL-C-26500/BACC 45 & 63 standards.
• The C48 Series connectors, often referred to as Omega connectors, have earned their place in the aerospace industry by meeting stringent MIL-C-26500 standards.
• This series not only addresses general-purpose requirements but also tackles unique challenges related to shielding, environmental sealing, fluid resistance, and vibration.
• The C48 Series connectors boast a range of contact sizes, accommodating wire sizes 24 through 12 AWG. Current ratings vary based on the contact size, ensuring optimal performance in diverse applications.
• Air Electro’s robust stock position on these connectors ensures a readily available supply and demonstrates the commitment to excellence in aerospace connectivity.

Air Electro Inventory: BACC45, BACC 63, and C48

The Cinch C48 Series connectors, especially the BACC45 & BACC63 variants, offer a comprehensive solution for aerospace connectivity, meeting and exceeding industry standards. With their diverse part number variants, coupling styles, material variations, and robust features, these connectors address the specific demands of the aerospace sector.

Air Electro takes pride in its strong stock position on the C48 Series connectors, ensuring that these aerospace-grade connectors are readily available for immediate use. This eliminates delays in critical projects and underlines the commitment to providing reliable solutions to the industry. Choose Air Electro for a seamless and reliable connection that stands the test of time. Start today.