ETRA8903 RF Antenna Equivalent & Substitute Parts

Part Overview

The ETRA8903 is a 925MHz center frequency whip antenna manufactured by TE Connectivity Laird, designed for UHF band applications spanning 890MHz to 960MHz. This antenna features a straight whip configuration with NMO base mount termination, delivering 3dBi gain at 150W maximum power handling. The ETRA8903 is classified as obsolete product status, necessitating identification of equivalent substitute components for ongoing system support and procurement requirements.

Substiute Parts

ETRA8903

TE Connectivity LairdIn Stock: 895ETRA8903 Datasheet

Current PartRFQ

ETRAB8903

TE Connectivity LairdIn Stock: 1121ETRAB8903 Datasheet

DirectRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution of the ETRA8903 is based on strict electrical and mechanical parameter alignment within the UHF frequency band. The primary substitute, ETRAB8903, maintains compatibility through the following criteria:

Substitution-Determining Parameters:

• Frequency Range: Both parts operate across 890MHz ~ 960MHz
• Antenna Type: Both are straight whip configurations
• Termination: Both utilize NMO base mount
• Gain: Both deliver 3dBi
• VSWR: Both specify 2
• Power Handling: Both rated 150W maximum
• Physical Height: Both measure 2.700" (68.58mm)
• Series: Both belong to Phantom Elite® series
• RoHS Compliance: Both are RoHS Compliant
• MSL Rating: Both rated MSL 1 (Unlimited)

The ETRAB8903 differs only in center frequency designation (915MHz versus 925MHz), which remains within the common 890MHz ~ 960MHz operating range, permitting direct substitution in applications tolerant of this frequency offset within the ISM band allocation.

Parameter Comparison

Engineering Selection Recommendations

The ETRAB8903 serves as the direct substitute for the obsolete ETRA8903. Selection of ETRAB8903 is supported by:

Product Status: ETRAB8903 maintains Active product status, ensuring continued manufacturer support, availability, and compliance with current regulatory requirements, whereas ETRA8903 is classified as Obsolete.

Regulatory Compliance: Both components are RoHS Compliant and carry identical MSL ratings, confirming equivalent environmental and manufacturing standards.

Electrical Equivalence: Identical frequency range (890MHz ~ 960MHz), gain (3dBi), VSWR (2), and power rating (150W) establish full electrical interchangeability within the specified operating parameters.

Mechanical Compatibility: Matching physical dimensions (2.700" height), termination type (NMO base mount), and antenna configuration (straight whip) confirm direct mechanical substitution without system redesign.

Inventory Availability: ETRAB8903 demonstrates higher inventory levels (1068 Pcs) compared to ETRA8903 (867 Pcs), supporting procurement continuity and supply chain reliability.

Frequently Asked Questions (FAQ)

Q: Can ETRAB8903 replace ETRA8903 in existing installations?

A: Yes. Both components share identical electrical specifications (frequency range, gain, VSWR, power rating), mechanical dimensions, termination type, and compliance certifications. The 10MHz center frequency difference (925MHz to 915MHz) remains within the common 890MHz ~ 960MHz operating band.

Q: What is the primary reason for substitution?

A: ETRA8903 is classified as Obsolete product status. ETRAB8903 is the Active equivalent, ensuring ongoing manufacturer support and regulatory compliance.

Q: Are there packaging differences between these parts?

A: ETRA8903 packaging is listed as dash (-), while ETRAB8903 is supplied in Bulk packaging. Both maintain identical physical dimensions and termination specifications.

Q: Do both antennas meet RoHS requirements?

A: Yes. Both ETRA8903 and ETRAB8903 are RoHS Compliant with MSL rating of 1 (Unlimited), confirming equivalent environmental and manufacturing standards.

Q: Is there a performance difference due to the center frequency variation?

A: Both antennas operate across the full 890MHz ~ 960MHz range with identical gain (3dBi) and VSWR (2) specifications. The center frequency designation reflects optimization points within this common band but does not restrict operation across the entire range.

Q: What are the HTSUS codes for these parts?

A: ETRA8903 carries HTSUS code 8529.10.9100, while ETRAB8903 carries HTSUS code 8517.71.0000. Both codes apply to RF antenna components under appropriate tariff classifications.