FG3805 RF Antenna 385MHz Whip Straight N Type Female Equivalent & Substitute Parts

Part Overview

The FG3805 is a 385MHz whip straight RF antenna manufactured by TE Connectivity Laird, designed for UHF band applications within the 380MHz to 390MHz frequency range. This component features an N Type Female termination with bracket mount configuration and delivers 5dBd gain. The FG3805 is classified as obsolete, making identification of equivalent and substitute parts essential for system maintenance, repair, and component sourcing in active production environments.

Substiute Parts

FG3805

TE Connectivity LairdIn Stock: 995FG3805 Datasheet

Current PartRFQ

FG3803

TE Connectivity LairdIn Stock: 986FG3803 Datasheet

SimilarRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution eligibility for the FG3805 is determined by the following critical parameters:

Mandatory Matching Parameters:

• Frequency Range: 380MHz ~ 390MHz
• Center Frequency: 385MHz
• Antenna Type: Whip, Straight
• Termination: N Type Female
• Mounting Type: Bracket Mount
• Frequency Group: UHF (300MHz ~ 1GHz)

Allowable Variation Parameters:

• Gain: The FG3805 specifies 5dBd; substitute parts may vary in gain specification while maintaining the same frequency band and physical configuration
• Product Status: Active status substitutes are preferred for obsolete parts to ensure continued availability
• VSWR and Return Loss: These parameters may differ between substitute parts based on design optimization

The FG3803 qualifies as a substitute part because it maintains identical frequency range, center frequency, antenna type, termination, and mounting configuration. The primary difference is the gain specification (3dBd versus 5dBd) and product status (Active versus Obsolete).

Parameter Comparison

Engineering Selection Recommendations

The FG3803 is the identified substitute for the obsolete FG3805. Both components are manufactured by TE Connectivity Laird and maintain identical electrical and mechanical compatibility within the 380MHz to 390MHz frequency band.

Substitution Basis:

• Both parts operate within the same UHF frequency range with identical center frequency specification
• Identical antenna configuration (whip, straight) and termination type (N Type Female)
• Identical mounting interface (bracket mount)
• Both components meet RoHS compliance requirements
• Both components have MSL rating of 1 (Unlimited), indicating no moisture sensitivity constraints

Status Advantage: The FG3803 carries Active product status, ensuring continued manufacturer support, availability, and supply chain reliability compared to the obsolete FG3805.

Compliance Consideration: Both parts are RoHS Compliant and carry identical MSL ratings, supporting direct substitution in regulated environments without additional compliance assessment.

Frequently Asked Questions (FAQ)

Q: Can the FG3803 directly replace the FG3805 in existing installations?

A: Yes. The FG3803 maintains identical frequency range (380MHz ~ 390MHz), antenna type (whip, straight), termination (N Type Female), and mounting configuration (bracket mount) as the FG3805. Both components are RoHS Compliant with MSL rating 1.

Q: What is the primary difference between FG3805 and FG3803?

A: The FG3803 specifies 3dBd gain compared to the FG3805's 5dBd gain. The FG3803 also provides VSWR specification (2) and maximum height specification (44 inches). The FG3803 carries Active product status versus the FG3805's Obsolete status.

Q: Does the gain difference affect substitution compatibility?

A: Gain specification is an allowable variation parameter for antenna substitution within the same frequency band and physical configuration. The 2dBd difference reflects design optimization in the FG3803 but does not prevent functional substitution in 385MHz applications.

Q: Are there packaging differences between these parts?

A: The FG3805 packaging is listed as dash (-), while the FG3803 is supplied in Bulk packaging. Both parts are available in new original condition with substantial inventory levels.

Q: What compliance certifications apply to both parts?

A: Both the FG3805 and FG3803 are RoHS Compliant and carry Moisture Sensitivity Level 1 (Unlimited). Both parts share identical ECCN classification (5A991G) for export control purposes.

Q: Why is the FG3803 preferred for new designs?

A: The FG3803 carries Active product status, ensuring ongoing manufacturer support and supply availability. The FG3805's Obsolete status indicates discontinued production and potential future supply constraints.