DBTC-18-4-75L+

RF Directional Couplers Overview

The DBTC-18-4-75L+ is a surface-mount directional coupler manufactured by Mini-Circuits, designed for CATV and broadband applications. It operates within a frequency range of 5 MHz to 1000 MHz and features a nominal coupling factor of 18.2 dB. The component supports a maximum power handling capacity of 1 Watt and utilizes a 75 Ohm impedance system. Key electrical specifications include an insertion loss of 0.8 dB and a directivity of 24.29 dB. It is housed in a compact SMD-5P package and functions reliably across a temperature range of -40°C to +85°C.

RF Directional Couplers Feature Summary

• Provides precise signal sampling with high directivity for accurate monitoring in RF systems.
• Engineered for 75 Ohm impedance environments typical of cable television and broadband networks.
• Supports surface-mount technology for automated assembly and space-constrained designs.

RF Directional Couplers Applications

• CATV distribution network signal monitoring
• Broadband access system signal conditioning
• DOCSIS 3.1 and 4.0 infrastructure components

RF Directional Couplers Procurement Notes

Verify the specific ordering suffix to ensure the correct package type and termination style match the design requirements. Confirm RoHS compliance status if restricted substances are prohibited in the target market. Check the manufacturer's latest datasheet for any updates to mechanical dimensions or thermal characteristics before finalizing the bill of materials.

RF Directional Couplers Selection Notes

Select this component when a 75 Ohm system interface is required rather than standard 50 Ohm configurations. The 18.2 dB coupling value suits applications needing moderate signal attenuation for monitoring purposes. Ensure the operating frequency range covers the entire 5 MHz to 1000 MHz spectrum relevant to the specific broadband standard being implemented.

RF Directional Couplers Part Context

This part belongs to Mini-Circuits' extensive portfolio of passive RF components tailored for the cable industry. The DBTC series specifically addresses the need for reliable signal splitting and combining in hybrid fiber-coaxial architectures. These components are integral to maintaining signal integrity in modern digital video and data transmission systems.

RF Directional Couplers Replacement Considerations

Consult official substitution lists for compatible models with similar coupling factors and impedance values. Verify that alternative parts support the same 75 Ohm system and 1 Watt power rating. Ensure mechanical footprint compatibility if board space is limited.