KAPPA-M868 Equivalent & Substitute Parts Reference

Part Overview

The KAPPA-M868 is a General ISM < 1GHz Transceiver Module operating at 868MHz with Through Hole mounting. This module is classified as Obsolete, necessitating identification of equivalent substitute components for ongoing design requirements and production continuity. The KAPPA-M868 provides RF transmission and reception capabilities for ISM band applications with UART and USB serial interfaces.

Substiute Parts

KAPPA-M868

RF SolutionsIn Stock: 1110KAPPA-M868 Datasheet

Current PartRFQ

ZETAPLUS-868-D

RF SolutionsIn Stock: 933ZETAPLUS-868-D Datasheet

MFR RecommendedRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution of the KAPPA-M868 is determined by the following critical parameters:

Mandatory Compatibility Criteria:

• Mounting Type: Through Hole configuration required
• Operating Temperature Range: -40°C ~ 85°C minimum
• Power Output: 13dBm
• RoHS Compliance: RoHS3 or equivalent
• MSL Rating: 1 (Unlimited)
• Serial Interface Support: UART capability

Operational Considerations:

• Frequency band operation (868MHz primary, alternative ISM bands acceptable)
• Data rate capability (56kbps minimum)
• Supply voltage overlap within specified range
• Receiver sensitivity performance

The ZETAPLUS-868-D is identified as a manufacturer-recommended substitute based on RF Solutions product line compatibility and shared electrical characteristics within the ISM transceiver module category.

Parameter Comparison

Engineering Selection Recommendations

Product Status Consideration: The KAPPA-M868 is classified as Obsolete. The ZETAPLUS-868-D maintains Active product status with RF Solutions, ensuring continued availability and manufacturing support.

Compliance and Certification: Both components meet RoHS requirements. The ZETAPLUS-868-D carries ROHS3 Compliant certification, representing current regulatory compliance standards. Both components share identical MSL Rating 1 (Unlimited) and ECCN/HTSUS classifications.

Electrical Compatibility: The ZETAPLUS-868-D operates within the supply voltage range of the KAPPA-M868 (1.8V ~ 3.6V encompasses 2.4V ~ 3.6V). Both modules deliver identical power output at 13dBm. The ZETAPLUS-868-D demonstrates lower current consumption during receiving (10mA vs. 20mA) and transmitting (18mA vs. 28mA) operations.

Interface and Mounting: Both components feature Through Hole mounting and support UART serial interface. The ZETAPLUS-868-D adds SPI capability. Package configuration differs (12-SIP vs. 12-DIP), requiring PCB layout verification.

Frequency and Performance: The ZETAPLUS-868-D operates at 433MHz rather than 868MHz, representing operation in an alternative ISM band. Data rate capability increases to 500kbps. Receiver sensitivity is -116dBm compared to -121dBm.

Frequently Asked Questions (FAQ)

Q: Can the ZETAPLUS-868-D directly replace the KAPPA-M868 without PCB modifications?

A: Package configuration differs between components (12-SIP vs. 12-DIP). PCB footprint verification is required. Both maintain Through Hole mounting and identical pin count, but physical dimensions and pin spacing may differ. Consult package datasheets for dimensional specifications.

Q: What is the impact of frequency difference between 868MHz and 433MHz operation?

A: The ZETAPLUS-868-D operates in the 433MHz ISM band rather than 868MHz. This represents operation in a different frequency allocation. System design, antenna selection, and regulatory compliance must account for this frequency change. Both frequencies are within General ISM < 1GHz classification.

Q: Are the serial interfaces compatible between these modules?

A: Both modules support UART interface. The KAPPA-M868 includes USB capability, while the ZETAPLUS-868-D provides SPI interface. System integration must verify UART signal compatibility and address any USB-dependent functionality in the original design.

Q: What are the power consumption implications of substitution?

A: The ZETAPLUS-868-D demonstrates reduced current consumption: 10mA receiving (vs. 20mA) and 18mA transmitting (vs. 28mA). Supply voltage range is broader (1.8V ~ 3.6V vs. 2.4V ~ 3.6V), providing additional design flexibility for lower voltage applications.

Q: Is the ZETAPLUS-868-D suitable for applications requiring -121dBm sensitivity?

A: The ZETAPLUS-868-D provides -116dBm sensitivity, representing a 5dBm difference from the KAPPA-M868. Applications requiring the original -121dBm sensitivity specification must evaluate whether -116dBm performance meets system requirements.

Q: What is the significance of the Si4455 IC in the ZETAPLUS-868-D?

A: The ZETAPLUS-868-D utilizes the Si4455 transceiver IC. This represents the underlying RF component architecture. The Si4455 is a high-performance transceiver supporting multiple ISM bands and modulation schemes.

Q: Are both components RoHS compliant for current procurement?

A: The KAPPA-M868 is RoHS Compliant. The ZETAPLUS-868-D carries ROHS3 Compliant certification, representing current regulatory standards. Both components meet RoHS requirements for new designs and procurement.