TRAB4203 Equivalent & Substitute Parts Reference

Part Overview

The TRAB4203 is a 425MHz dome RF antenna manufactured by TE Connectivity Laird, designed for UHF applications in the 420MHz to 430MHz frequency band. This antenna features an NMO base mount termination and is part of the Phantom® series. The product is currently classified as obsolete, making identification of equivalent substitute parts essential for system maintenance, repair, and component sourcing in active installations.

Substiute Parts

TRAB4203

TE Connectivity LairdIn Stock: 724TRAB4203 Datasheet

Current PartRFQ

TRAB4103

TE Connectivity LairdIn Stock: 818TRAB4103 Datasheet

DirectRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution eligibility for the TRAB4203 is determined by the following critical parameters:

Mandatory Matching Parameters:

• Antenna Type: Dome
• Termination: NMO
• Mounting Type: Base Mount
• Frequency Group: UHF (300MHz ~ 1GHz)
• Number of Bands: 1
• Moisture Sensitivity Level: 1 (Unlimited)

Frequency Compatibility: The TRAB4203 operates at a center frequency of 425MHz within the 420MHz to 430MHz range. Substitute parts must support frequency operation that encompasses or overlaps with this band to ensure functional compatibility in the target application.

Identified Substitute: The TRAB4103 meets all mandatory matching parameters. It operates at a center frequency of 420MHz with a frequency range of 410MHz to 430MHz, providing full coverage of the TRAB4203 operating band. Both parts share identical termination (NMO), mounting type (Base Mount), antenna type (Dome), and series designation (Phantom®).

Parameter Comparison

Engineering Selection Recommendations

The TRAB4103 is the direct substitute for the obsolete TRAB4203. Selection of the TRAB4103 is based on the following engineering criteria:

Product Status Alignment: The TRAB4203 is obsolete and no longer manufactured. The TRAB4103 is an active product with current manufacturing support and availability, making it the appropriate choice for new designs, repairs, and component replenishment.

Compliance and Certification: Both parts share identical ECCN classification (5A991G), ensuring regulatory consistency. The TRAB4103 carries RoHS Compliance certification, meeting current environmental and material restriction standards. The TRAB4203 RoHS status is not specified.

Mechanical and Electrical Compatibility: Both antennas feature identical NMO termination, base mount configuration, and dome antenna type. The frequency range of the TRAB4103 (410MHz ~ 430MHz) fully encompasses the TRAB4203 operating band (420MHz ~ 430MHz), ensuring functional compatibility in existing installations.

Packaging and Inventory: The TRAB4103 is available in bulk packaging with 731 pieces in current stock. The TRAB4203 inventory of 704 pieces represents remaining stock of an obsolete product.

Frequently Asked Questions (FAQ)

Q: Can the TRAB4103 directly replace the TRAB4203 in existing installations?

A: Yes. Both antennas share identical termination (NMO), mounting type (base mount), antenna type (dome), and series designation (Phantom®). The TRAB4103 frequency range (410MHz ~ 430MHz) fully covers the TRAB4203 operating band (420MHz ~ 430MHz).

Q: What is the primary reason for substitution?

A: The TRAB4203 is classified as obsolete and is no longer in active production. The TRAB4103 is an active product with current manufacturing support and availability.

Q: Are there differences in electrical performance between these parts?

A: The TRAB4103 provides specified electrical parameters: 3dBi gain, VSWR of 2, and maximum power rating of 150W. The TRAB4203 electrical specifications are not provided in available documentation.

Q: What is the physical difference between these antennas?

A: The TRAB4103 has a maximum height of 3.300 inches (83.82mm). The TRAB4203 height specification is not provided.

Q: Are both parts RoHS compliant?

A: The TRAB4103 is explicitly RoHS Compliant. The TRAB4203 RoHS status is not specified in available documentation.

Q: Do both antennas operate in the same frequency band?

A: The TRAB4203 operates at 425MHz center frequency within 420MHz ~ 430MHz. The TRAB4103 operates at 420MHz center frequency within 410MHz ~ 430MHz. The TRAB4103 frequency range fully encompasses the TRAB4203 band.

Q: What is the packaging format for the TRAB4103?

A: The TRAB4103 is supplied in bulk packaging.

Q: Are there any regulatory or export considerations?

A: Both parts share identical ECCN classification (5A991G), ensuring consistent regulatory treatment for export and compliance purposes.