KAPPA-T868 RF Transceiver Module Equivalent & Substitute Parts

Part Overview

The KAPPA-T868 is a General ISM < 1GHz transceiver module operating at 868MHz with through-hole mounting. This part is classified as obsolete, making identification of equivalent and substitute components necessary for ongoing system support and new design implementations. The module provides bidirectional RF communication capability with UART serial interface and operates across a 1.8V to 3.6V supply voltage range.

Substiute Parts

KAPPA-T868

RF SolutionsIn Stock: 1150KAPPA-T868 Datasheet

Current PartRFQ

ZPT-8TD

RF SolutionsIn Stock: 860ZPT-8TD Datasheet

MFR RecommendedRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution of the KAPPA-T868 is determined by the following critical parameters:

Frequency Alignment: The substitute part must operate at 868MHz within the General ISM < 1GHz band to maintain RF compatibility with existing network infrastructure and regulatory compliance.

Supply Voltage Compatibility: The substitute must accept the 1.8V to 3.6V supply voltage range to integrate with existing power distribution systems without additional voltage regulation.

Mounting Configuration: The KAPPA-T868 uses through-hole mounting. Substitute parts must maintain through-hole mounting to ensure PCB assembly compatibility without redesign.

Package Form Factor: The 12-pin module package constrains physical integration. Substitute parts must use equivalent 12-pin module packaging.

Serial Communication Interface: UART interface requirement must be maintained for direct integration with existing microcontroller interfaces.

RF Performance Envelope: Output power, sensitivity, and data rate parameters define the operational performance window. Substitutes must operate within acceptable ranges for the intended application.

The ZPT-8TD is identified as a substitute based on matching frequency (868MHz), supply voltage range (1.8V ~ 3.6V), through-hole mounting, 12-pin module package, and ISM band operation.

Parameter Comparison

Engineering Selection Recommendations

Product Status Consideration: The KAPPA-T868 is classified as obsolete. The ZPT-8TD carries active product status, ensuring continued availability, manufacturing support, and compliance with current regulatory standards.

Compliance and Certification: Both parts maintain RoHS compliance. The ZPT-8TD meets ROHS3 requirements, representing current regulatory alignment. Both parts carry identical MSL ratings (1 - Unlimited), indicating equivalent moisture handling requirements.

Operational Temperature Range: The ZPT-8TD extends the upper operating temperature limit to 85°C compared to the KAPPA-T868 at 55°C. This provides enhanced thermal margin for applications operating in elevated ambient conditions.

RF Performance: The ZPT-8TD delivers 15dBm output power versus the KAPPA-T868 at 13dBm, representing a 2dB increase in transmit capability. This performance differential must be evaluated against application link budget requirements.

Frequency and Supply Voltage: Both parts operate identically at 868MHz with 1.8V to 3.6V supply voltage compatibility, ensuring direct functional substitution for RF communication and power integration.

Frequently Asked Questions (FAQ)

Q: Can the ZPT-8TD directly replace the KAPPA-T868 in existing designs?

A: Direct replacement requires verification of pinout compatibility between the 12-SIP and 12-DIP module packages. While both are 12-pin through-hole modules, physical pin assignments and functional mapping must be confirmed against detailed datasheets before PCB integration.

Q: What is the significance of the 2dB power output difference?

A: The ZPT-8TD provides 15dBm output versus the KAPPA-T868 at 13dBm. This 2dB increase affects RF link budget calculations and may require adjustment of receiver sensitivity thresholds or antenna gain specifications in system design.

Q: Are there supply voltage compatibility concerns?

A: Both parts operate across the identical 1.8V to 3.6V supply voltage range. Existing power supply designs require no modification for substitution.

Q: How does the extended temperature range of the ZPT-8TD affect system design?

A: The ZPT-8TD operates to 85°C versus the KAPPA-T868 at 55°C. This extended range provides additional thermal margin but does not require design changes if the original application operated within the KAPPA-T868 temperature window.

Q: What is the impact of package form factor differences?

A: The KAPPA-T868 uses 12-SIP packaging while the ZPT-8TD uses 12-DIP packaging. Both are through-hole modules, but physical dimensions and pin spacing may differ. PCB footprint verification is required before substitution.

Q: Is the UART serial interface maintained in the substitute part?

A: The ZPT-8TD is specified as a transmitter module. Detailed interface specifications must be confirmed against the complete datasheet to verify UART compatibility with the original KAPPA-T868 transceiver functionality.

Q: What regulatory compliance applies to both parts?

A: Both parts comply with RoHS standards. The ZPT-8TD meets ROHS3 requirements. Both carry ECCN and HTSUS classifications appropriate for ISM band RF modules. Regulatory compliance for the intended market must be verified independently.