A09-Y15NF Equivalent & Substitute Parts

Part Overview

The A09-Y15NF is a 900MHz Yagi RF antenna manufactured by Digi, featuring 15.1dBi gain with N Type Female chassis mount termination. This component is classified as obsolete, necessitating identification of functionally equivalent alternatives for ongoing system integration and procurement planning. The antenna operates within the UHF frequency band (300MHz ~ 1GHz) and is designed for applications requiring directional RF reception and transmission at 900MHz.

Substiute Parts

A09-Y15NF

DigiIn Stock: 1017A09-Y15NF Datasheet

Current PartRFQ

YS8906

TE Connectivity LairdIn Stock: 1137YS8906 Datasheet

MFR RecommendedRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution of the A09-Y15NF is determined by the following critical parameters:

• Frequency Compatibility: The substitute must operate within or encompass the 900MHz center frequency. The YS8906 operates at 902MHz with a frequency range of 890MHz ~ 915MHz, providing coverage of the 900MHz band.
• Antenna Type: Both the main part and substitute are Yagi-type antennas, ensuring similar directional radiation patterns and operational characteristics.
• Termination Type: Both components feature N Type Female connectors, ensuring mechanical and electrical compatibility with existing RF interfaces.
• Frequency Group: Both operate within the UHF band (300MHz ~ 1GHz).

The YS8906 qualifies as a substitute despite differences in gain (9dBd vs. 15.1dBi), mounting type (bracket mount vs. chassis mount), and element configuration (6-element vs. unspecified), as these represent design trade-offs within the Yagi antenna category rather than incompatibilities.

Parameter Comparison

Engineering Selection Recommendations

The YS8906 is an active product manufactured by TE Connectivity Laird with RoHS compliance certification, addressing the obsolescence status of the A09-Y15NF. Both components share identical termination (N Type Female) and frequency group (UHF) specifications, enabling direct RF interface compatibility.

Selection of the YS8906 requires evaluation of mechanical integration differences: the A09-Y15NF uses chassis mount configuration while the YS8906 employs bracket mount. Mounting adaptation may be necessary depending on system enclosure design. The gain differential (15.1dBi vs. 9dBd) and VSWR specification (1.5 for YS8906) should be assessed against system link budget and impedance matching requirements.

Frequently Asked Questions (FAQ)

Q: Can the YS8906 directly replace the A09-Y15NF without modification?

A: RF interface compatibility is assured through identical N Type Female termination and overlapping frequency coverage (890MHz ~ 915MHz encompasses 900MHz operation). Mechanical integration requires evaluation of mounting type differences: chassis mount versus bracket mount configurations may necessitate adapter hardware or enclosure redesign.

Q: What is the significance of the gain difference between 15.1dBi and 9dBd?

A: Gain values in dBi (isotropic) and dBd (dipole reference) represent different measurement standards. The YS8906 specification of 9dBd corresponds to approximately 11dBi, representing lower directional gain than the A09-Y15NF. System link budget analysis is required to determine if this gain reduction is acceptable for the intended application.

Q: Are there compliance differences between the two parts?

A: The YS8906 carries RoHS Compliant certification, while the A09-Y15NF RoHS status is not specified. Both components share identical Moisture Sensitivity Level (MSL 1 - Unlimited) and operate within the same HTSUS classification (8529.10.9100).

Q: What does the VSWR specification of 1.5 for the YS8906 indicate?

A: VSWR (Voltage Standing Wave Ratio) of 1.5 indicates impedance matching performance at the antenna connector. This specification is not provided for the A09-Y15NF. Lower VSWR values indicate better impedance matching; 1.5 is within acceptable range for UHF antenna applications.

Q: How does the 6-element configuration of the YS8906 compare to the A09-Y15NF?

A: The YS8906 explicitly specifies 6-element Yagi configuration. The A09-Y15NF element count is not provided in available specifications. Element count directly influences gain, directivity, and frequency response characteristics. The lower gain of the YS8906 (9dBd) is consistent with a 6-element design compared to the higher gain (15.1dBi) of the A09-Y15NF.