XM-P91-2P-AA Equivalent & Substitute Parts

Part Overview

The XM-P91-2P-AA is a MODEM XBEE 900HP 10K RS232 module manufactured by Digi, operating in the 902MHz ~ 928MHz ISM band with USB connectivity and 200kbps data rate capability. This part is classified as Obsolete, necessitating identification of functionally equivalent alternatives from the active product portfolio. Substitute parts must maintain compatibility across critical RF parameters, data rate specifications, and interface requirements to ensure seamless integration into existing or new system designs.

Substiute Parts

XM-P91-2P-AA

DigiIn Stock: 706XM-P91-2P-AA Datasheet

Current PartRFQ

XM-M92-UP-UA

DigiIn Stock: 1165XM-M92-UP-UA Datasheet

MFR RecommendedRFQ

XM-X9-3P-U

DigiIn Stock: 1083XM-X9-3P-U Datasheet

MFR RecommendedRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution eligibility for the XM-P91-2P-AA is determined by strict alignment across the following critical parameters:

Primary Substitution Criteria:

• Frequency range: 902MHz ~ 928MHz ISM band operation
• Interface capability: USB connectivity
• Data rate: 200kbps or higher
• Sensitivity: -110dBm or better
• Power output: 24dBm or higher
• Voltage supply compatibility: 7V ~ 30V or lower voltage with appropriate power management
• Regulatory compliance: REACH Unaffected, ECCN 5A992C

Identified Substitutes:

1. XM-M92-UP-UA – Manufacturer Recommended: Meets frequency, USB interface, data rate, sensitivity, and power output requirements. Operates at reduced voltage (2.1V ~ 3.6V), requiring voltage regulation for direct replacement in 7V ~ 30V systems. Active product status with RoHS compliance.

2. XM-X9-3P-U – Manufacturer Recommended: Exceeds frequency, data rate (250kbps), sensitivity (-113dBm), and power output (30dBm) specifications. Supports dual interface (RS-232 and USB). Maintains 7V ~ 30V voltage supply compatibility. Active product status with RoHS compliance.

Parameter Comparison

Engineering Selection Recommendations

XM-M92-UP-UA Selection Criteria:

• Preferred for applications requiring active product status and RoHS compliance
• Identical RF performance (frequency, sensitivity, power output, data rate)
• Requires external voltage regulation for systems designed for 7V ~ 30V supply
• FHSS modulation provides frequency hopping capability not present in original design
• Suitable for new designs prioritizing modern compliance standards

XM-X9-3P-U Selection Criteria:

• Optimal for direct replacement in existing 7V ~ 30V supply systems
• Dual interface support (RS-232 and USB) provides enhanced connectivity flexibility
• Superior performance specifications (250kbps data rate, -113dBm sensitivity, 30dBm output)
• ISM modulation maintains protocol compatibility with original design
• Active product status with RoHS compliance ensures long-term availability and regulatory alignment

Frequently Asked Questions (FAQ)

Q: Can XM-M92-UP-UA directly replace XM-P91-2P-AA in existing systems? A: Direct replacement requires external voltage regulation. The XM-M92-UP-UA operates at 2.1V ~ 3.6V, while the original design specifies 7V ~ 30V. RF parameters and data rate are identical, but power supply conditioning is mandatory.

Q: What is the primary advantage of XM-X9-3P-U over XM-M92-UP-UA? A: The XM-X9-3P-U maintains native 7V ~ 30V voltage supply compatibility, eliminating power supply redesign. It also provides dual interface capability (RS-232 and USB) and superior RF performance (250kbps data rate, -113dBm sensitivity, 30dBm output).

Q: Are both substitutes compatible with the original 902MHz ~ 928MHz ISM band frequency range? A: Yes. Both XM-M92-UP-UA and XM-X9-3P-U operate within the 902MHz ~ 928MHz ISM band, maintaining RF compatibility with the original XM-P91-2P-AA design.

Q: What is the difference between ISM and FHSS modulation in these parts? A: ISM (Industrial, Scientific, Medical) is a direct modulation scheme used in XM-P91-2P-AA and XM-X9-3P-U. FHSS (Frequency Hopping Spread Spectrum) in XM-M92-UP-UA provides frequency hopping capability for enhanced interference mitigation and coexistence in congested RF environments.

Q: Do both substitutes meet the same regulatory requirements as the original part? A: Yes. Both XM-M92-UP-UA and XM-X9-3P-U carry identical REACH Unaffected and ECCN 5A992C classifications. XM-X9-3P-U additionally provides RoHS compliance documentation.

Q: Which substitute is recommended for new product designs? A: XM-X9-3P-U is recommended for new designs requiring long-term product availability, active manufacturer support, and compliance with modern environmental standards. XM-M92-UP-UA is suitable for applications where FHSS modulation and compact power requirements are advantageous.