RXM-418-LC-S RF Receiver Equivalent & Substitute Parts

Part Overview

The RXM-418-LC-S is an RF receiver module manufactured by TE Connectivity Linx, designed for ASK/OOK modulation at 418MHz with -95dBm sensitivity and 5kbps maximum data rate. This module is classified as obsolete and operates on a 2.7V to 4.2V supply with 5mA receiving current. The LC series features PCB surface mount integration with a 16-SMD module package.

Due to its obsolete product status, sourcing the RXM-418-LC-S presents supply chain challenges. Identifying equivalent substitute parts ensures design continuity and maintains system functionality for applications requiring 418MHz RF reception in ISM band, garage door openers, and remote keyless entry (RKE) systems.

Key Parameters

Parameter	RXM-418-LC-S
Frequency	418MHz
Sensitivity	-95dBm
Data Rate (Max)	5kbps
Modulation or Protocol	ASK, OOK
Current - Receiving	5mA
Voltage - Supply	2.7V ~ 4.2V
Operating Temperature	-30°C ~ 70°C
Mounting Type	Surface Mount
Package / Case	16-SMD Module
Product Status	Obsolete
RoHS Status	RoHS non-compliant

Substitute Part Grouping Explanation

The RXM-418-LR qualifies as a direct substitute based on the following critical parameters:

Frequency Compatibility: Both modules operate at 418MHz, maintaining RF band alignment for ISM applications.

Modulation Support: Both support ASK and OOK modulation protocols, ensuring signal demodulation compatibility.

Mounting and Package: Both use Surface Mount technology with 16-SMD Module packaging, allowing direct PCB integration without redesign.

Base Product Family: Both belong to the RXM-418 base product line, confirming manufacturer-level compatibility within the same RF receiver architecture.

Enhanced Performance Characteristics: The RXM-418-LR provides superior sensitivity (-112dBm vs -95dBm), higher data rate capability (10kbps vs 5kbps), and active product status, making it suitable for applications requiring improved performance margins.

Parameter Comparison

Parameter	RXM-418-LC-S	RXM-418-LR	Compatibility Notes
Frequency	418MHz	418MHz	Identical
Sensitivity	-95dBm	-112dBm	LR provides 17dBm improvement
Data Rate (Max)	5kbps	10kbps	LR supports double the data rate
Modulation or Protocol	ASK, OOK	ASK, OOK	Identical
Current - Receiving	5mA	5.2mA	Negligible difference (0.2mA)
Voltage - Supply	2.7V ~ 4.2V	2.1V ~ 3.6V	LR range narrower; verify supply design
Operating Temperature	-30°C ~ 70°C	-40°C ~ 70°C	LR extends lower temperature limit
Mounting Type	Surface Mount	Surface Mount	Identical
Package / Case	16-SMD Module	16-SMD Module	Identical
Product Status	Obsolete	Active	LR actively manufactured
RoHS Status	RoHS non-compliant	RoHS Compliant	LR meets RoHS requirements

Engineering Selection Recommendations

For New Designs or Redesigns: The RXM-418-LR is the appropriate selection. It maintains active product status, ensuring long-term supply availability and manufacturer support. RoHS compliance aligns with current environmental and regulatory standards. Enhanced sensitivity and data rate provide performance headroom for system optimization.

For Existing RXM-418-LC-S Designs: The RXM-418-LR substitution is viable with the following considerations:

Supply voltage range differs (2.1V to 3.6V for LR versus 2.7V to 4.2V for LC-S). Designs operating below 2.1V or above 3.6V require power supply modification.

The RXM-418-LR's superior sensitivity and data rate do not degrade system performance; they extend operational margins.

Compliance Transition: Designs currently using the RXM-418-LC-S (RoHS non-compliant) benefit from transitioning to the RXM-418-LR (RoHS compliant) to meet evolving regulatory requirements.

Frequently Asked Questions (FAQ)

Q: Can the RXM-418-LR directly replace the RXM-418-LC-S without PCB modifications?

A: The RXM-418-LR uses identical 16-SMD Module packaging and Surface Mount technology, allowing direct footprint compatibility. However, verify that your power supply design accommodates the 2.1V to 3.6V range of the LR variant.

Q: What is the primary difference between the LC-S and LR series?

A: The LC-S is a standard-range receiver with -95dBm sensitivity and 5kbps data rate. The LR (Long Range) variant provides -112dBm sensitivity and 10kbps data rate, enabling extended reception distance and higher data throughput.

Q: Is the RXM-418-LR suitable for applications originally designed for the RXM-418-LC-S?

A: Yes. Both modules support identical 418MHz frequency and ASK/OOK modulation. The LR's enhanced performance characteristics do not introduce incompatibility; they provide improved operational margins for ISM, garage door opener, RKE, and remote control applications.

Q: What are the supply voltage considerations when substituting?

A: The RXM-418-LC-S operates from 2.7V to 4.2V, while the RXM-418-LR operates from 2.1V to 3.6V. If your design supplies voltage above 3.6V or below 2.1V, power supply adjustment is required before substitution.

Q: Does the RXM-418-LR meet RoHS compliance requirements?

A: Yes. The RXM-418-LR is RoHS Compliant, whereas the RXM-418-LC-S is RoHS non-compliant. This makes the LR suitable for applications subject to RoHS regulations.

Q: Are there any antenna connector differences between these modules?

A: The RXM-418-LC-S uses PCB surface mount antenna integration. The RXM-418-LR uses castellation antenna connection. Verify antenna design compatibility with your RF circuit layout.

Q: What is the receiving current difference between these modules?

A: The RXM-418-LC-S draws 5mA during reception, while the RXM-418-LR draws 5.2mA. This 0.2mA difference is negligible for most power budget calculations.

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