Network Connectivity Role
This coax BNC tee connector module establishes reliable physical links in automation networks. It facilitates daisy-chain or drop-line connections for coaxial communication systems. You can deploy this unit in factory-floor data highways and control networks. The module provides a passive connection point for three coaxial cable segments. It maintains characteristic impedance for minimal signal reflection and attenuation. This design suits both legacy and modern coaxial-based industrial communication infrastructures.
Physical Dimensions and Construction Details
The Reliance Electric 45C70 measures 38.5 mm in height and 42.8 mm in width. Its depth reaches 52.3 mm from the front connector face to the rear body. This unit weighs approximately 0.12 kg, offering a lightweight and compact footprint. You can mount this module directly onto a DIN rail using the included clip. Alternatively, you may secure it with a single M4 screw through the center hole. The zinc-alloy housing provides superior shielding against electromagnetic and radio frequency interference.
Connector Specifications and Interface Details
This module features three female BNC connectors with gold-plated center pins. Each connector accommodates RG-58 or RG-59 coaxial cables with 50-ohm impedance. The Reliance Electric 45C70 provides a frequency response up to 100 MHz. The center contact uses beryllium copper material for excellent conductivity and spring retention. The outer shell incorporates a bayonet locking mechanism for secure mating. Each port handles insertion cycles exceeding 1,000 operations without degradation.
Electrical Characteristics and Signal Integrity
This tee connector presents a 50-ohm nominal impedance across all three ports. The insertion loss measures less than 0.2 dB at frequencies up to 10 MHz. Return loss exceeds 20 dB throughout the operating frequency range. The Reliance Electric 45C70 maintains a voltage standing wave ratio of 1.2:1 maximum. These parameters ensure reliable data transmission with minimal signal distortion. The module also provides isolation between ports exceeding 40 dB at 1 MHz.
Internal Wiring and Component Configuration
The internal assembly uses a printed circuit board with a 50-ohm microstrip transmission line. You will find three surface-mount ferrite beads for suppressing high-frequency noise. The module incorporates a 2-watt carbon film termination resistor on the unused port. A single center conductor connects all three ports in a tee configuration. The PCB material uses FR-4 with a dielectric constant of 4.2. The component count reaches 12 discrete elements including capacitors and resistors.
Cable Compatibility and Termination Options
You can attach RG-58/U, RG-59/U, or RG-62/U coaxial cables to this module. Each connector accepts cable diameters from 4.5 mm to 6.5 mm. The Reliance Electric 45C70 includes a 50-ohm internal termination for the third port. You may remove this termination if you require a through-line connection. This flexibility accommodates different network topologies and termination requirements. The crimp-style connector provides a gas-tight seal for long-term signal integrity.
Environmental Tolerances and Durability
This connector module operates reliably between -40°C and 85°C ambient. It withstands humidity levels from 5% to 95% without performance degradation. The housing meets IP40 protection standards for indoor environments. Vibration resistance reaches 5 G from 10 Hz to 500 Hz on each axis. Shock survivability measures 30 G for 11 milliseconds half-sine pulses. These specifications allow installation in demanding industrial automation settings.
Technical Data Summary
| Parameter | Specification |
|---|---|
| Model | Reliance Electric 45C70 |
| Type | Coax BNC Tee Connector Module |
| Dimensions (H × W × D) | 38.5 × 42.8 × 52.3 mm |
| Weight | 0.12 kg |
| Connector Type | BNC female (3 ports) |
| Impedance | 50 ohms nominal |
| Frequency Response | DC to 100 MHz |
| Insertion Loss | < 0.2 dB (at 10 MHz) |
| Return Loss | > 20 dB |
| VSWR | 1.2:1 maximum |
| Isolation | > 40 dB (at 1 MHz) |
| Cable Compatibility | RG-58, RG-59, RG-62 |
| Termination | 50-ohm internal (removable) |
| Housing Material | Zinc alloy |
| Temperature Range | -40 to 85 °C |
| Protection Rating | IP40 |
| Connector Durability | 1,000 insertion cycles |
Installation Considerations and Network Rules
You should place this tee at the midpoint of the network trunk segment. Always terminate the unused port with the internal 50-ohm resistor. Ensure that you do not exceed the maximum of 32 nodes on one segment. The module offers visual polarity indicators for correct cable orientation. Regular inspection of the BNC connectors ensures maintained signal quality over time.
Details
| Weight | 0.12 kg |
|---|---|
| Dimensions | 38.5 × 42.8 × 52.3 mm |
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