Twinax Triax Connectors Designed Around Bel Fuse RFI75-1 for MIL-STD-1553B Data Bus and Video Pairs
Product Overview
Cinch Connectivity Solutions, through its Trompeter brand, offers a comprehensive range of twinax/triax connectors designed for high-performance applications in military, space, and testing environments. These connectors are engineered to meet stringent military specifications, including MIL-C-49142, and are utilized in critical systems such as MIL-STD-1553B data buses, video pairs, and baseband circuits where noise-free guarded circuits are essential. The product line features various series like 70/370 (TRB/TRT), 150/3150 (TRS/TTM), 450 series, and 80/380 series, offering a range of coupling mechanisms (bayonet, threaded), lug counts, and termination types (crimp, solder pot). Many products are QPL'd to MIL-C-49142, ensuring adherence to rigorous quality and performance standards. The company emphasizes creative, hands-on engineering and utilizes multiple contact technologies, including fiber optic expanded beam and QPL listed products, to deliver innovative solutions.
Product Attributes
- Brand: Trompeter (a Cinch Connectivity Solutions brand)
- Certifications: QPL'd to MIL-C-49142 (Category G and A)
- Material: Brass (bodies), Beryllium-Copper (contacts, spring fingers), PTFE (dielectrics)
- Finish: Bright Nickel-plated (standard), Silver-plated (QPL versions)
Technical Specifications
| Series | Connector Type | MIL-Spec | Nominal Impedance | Frequency Range | Key Features |
|---|---|---|---|---|---|
| 70/370 | TRB/TRT (Miniature Twinax/Triax) | MIL-C-49142 | Non-constant | 0-500 MHz | 3-lug, 4-lug, threaded, push-on versions; field serviceable; tool crimp & wrench crimp options; hermetically sealed versions available. |
| 150/3150 | TRS/TTM (Subminiature Twinax/Triax) | MIL-C-49142 | Non-constant | 0-500 MHz | High density, weight reduction; push-on for blind mate; tool crimp & wrench crimp options; hermetically sealed versions available. |
| 450/3450 | Concentric Twinax | MIL-C-49142 | Non-constant | 0-2 MHz | Designed for MIL-STD-1553B airborne digital databus; weight reduction; field installation full crimp design; multiple keyings and pin/socket arrangements. |
| 80/380 | TRC/TRN (Standard Twinax/Triax) | N/A (Recommended against for new designs) | Non-constant | 0-500 MHz | Standard size; used with larger twinax/triax cables; weatherproof designs; compatible with Raychem designs. |
| 30/330 | TWBNC/TWTNC (Miniature Twinax/Triax) | MIL-C-3655 Interface | Non-constant | 0-500 MHz | Miniature size; two-pin polarized; same size as BNC/TNC connectors. |
General Specifications (for 70/80/150/450 Series):
| Characteristic | Requirement |
|---|---|
| Insulation Resistance | 5000 M |
| Dielectric Withstanding Voltage | 1200 VRMS (center to inter. cond.), 500 VRMS (inter. to outer cond.) |
| Durability | 500 cycles minimum |
| Temperature Range | -65C to +165C (varies by series) |
| Salt Spray | 48 hrs minimum exposure (Standard nickel plating) |
2411220410_Bel-Fuse-RFI75-1_C17200003.pdf
