RC1781HP-TM

Overview

The RC1781HP-TM is a high-power RF transceiver module from the Tinymesh series by Radiocrafts AS, designed for ISM bands below 1GHz. Operating at 865MHz, it utilizes the CC1120 IC to deliver a maximum output power of 27dBm with a sensitivity of -118dBm. The module supports GFSK modulation and a data rate of 100Kbps via a UART interface. It functions on a supply voltage of 2.8V to 3.6V, drawing 407mA during transmission and 31mA during reception. Designed for surface mount installation, it operates within a temperature range of -30°C to 85°C.

Feature Summary

• High-output capability delivering up to 27dBm transmit power for extended range applications
• Enhanced receiver sensitivity reaching -118dBm for reliable communication in low signal environments
• Integrated Tinymesh protocol support enabling robust wireless mesh networking capabilities
• Compact castle-shaped surface mount package design facilitating automated PCB assembly

Applications

• Industrial telemetry and remote monitoring systems requiring long-range connectivity
• Smart metering infrastructure utilizing sub-1GHz frequency bands
• Wireless sensor networks deployed in harsh environmental conditions
• SCADA system components for utility and energy management

Procurement Notes

Verify the specific suffix designation to confirm the exact packaging configuration, as variations exist between tape and reel or tube formats. Ensure the target application voltage aligns with the specified 2.8V to 3.6V operating range. Confirm RoHS3 compliance requirements are met for the intended market regulations. Cross-reference the base product number RC1781 to ensure compatibility with existing system designs and documentation.

Selection Notes

Select this module when high transmit power and superior sensitivity are critical for network reliability over distance. The 865MHz frequency band offers favorable propagation characteristics for regional deployments compared to higher frequencies. Consider the UART interface simplicity against more complex SPI alternatives if minimal pin count is desired. Evaluate the thermal performance within the -30°C to 85°C range against the specific operational environment constraints.

Part Context

This component belongs to the Tinymesh series of RF modules, which integrates radio functionality with proprietary mesh networking protocols. The RC1781HP variant specifically denotes high-power output capabilities, distinguishing it from standard variants like the RC1181-TM. It serves as a complete solution for developers needing certified wireless connectivity without designing custom RF circuits from discrete components.

Replacement Considerations

The RC1780HP-TM is a confirmed substitute part number offering identical specifications and functionality. Both parts operate at 865MHz with matching electrical parameters and physical dimensions. Verify that any alternative sourcing maintains the same Tinymesh protocol support and firmware compatibility.