RF Antenna B3803S 380MHz Whip Straight NMO Base Mount - Equivalent & Substitute Parts

Part Overview

The B3803S is a 380MHz whip straight RF antenna manufactured by TE Connectivity Laird with NMO base mount termination. This component is classified as obsolete, making identification of equivalent and substitute parts essential for system maintenance, repair, and redesign applications. The antenna operates within the UHF frequency band (300MHz to 1GHz) and delivers 3dB gain with a VSWR of 2. Current inventory of 862 pieces is available as new original stock.

Substiute Parts

B3803S

TE Connectivity LairdIn Stock: 966B3803S Datasheet

Current PartRFQ

B3803WS

TE Connectivity LairdIn Stock: 860B3803WS Datasheet

SimilarRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution eligibility for the B3803S is determined by the following critical parameters:

Mandatory Matching Parameters:

• Termination type: NMO
• Mounting type: Base Mount
• Antenna type: Whip, Straight
• Frequency group: UHF (300MHz ~ 1GHz)
• VSWR: 2
• RoHS compliance status

Allowable Variation Parameters:

• Center frequency: Must fall within the UHF band; frequency range flexibility depends on application requirements
• Gain: Specified as 3dB for B3803S; substitute parts may operate at equivalent gain levels
• Product status: Active products are preferred over obsolete classifications for long-term availability

The B3803WS qualifies as a substitute part based on matching termination (NMO), mounting type (Base Mount), antenna configuration (Whip, Straight), frequency group (UHF), VSWR (2), and RoHS compliance. The B3803WS operates at 450MHz center frequency with a frequency range of 380MHz to 520MHz, encompassing the B3803S operating point of 380MHz.

Parameter Comparison

Engineering Selection Recommendations

For B3803S Replacement:

The B3803WS is the designated substitute part for the obsolete B3803S. Both components share identical termination (NMO), mounting configuration (Base Mount), antenna geometry (Whip, Straight), and electrical performance specifications (VSWR 2, 3dB gain). Both parts maintain RoHS compliance and MSL rating 1 (Unlimited).

The B3803WS operates at 450MHz center frequency with a specified frequency range of 380MHz to 520MHz. This range encompasses the B3803S operating point of 380MHz, ensuring functional compatibility within the UHF band.

The B3803WS holds Active product status, providing superior long-term availability and supply chain continuity compared to the Obsolete B3803S. The substitute part includes specified maximum height (9.921 inches / 252.00mm) and maximum power rating (200W), parameters not provided for the original part.

Selection of the B3803WS eliminates obsolescence risk while maintaining electrical and mechanical compatibility with existing NMO base mount installations.

Frequently Asked Questions (FAQ)

Q: Can the B3803WS directly replace the B3803S in existing installations?

A: Yes. Both parts feature identical NMO termination, Base Mount configuration, Whip Straight antenna type, VSWR of 2, and 3dB gain specification. The B3803WS frequency range (380MHz to 520MHz) includes the B3803S operating point of 380MHz.

Q: What is the primary reason for substitution?

A: The B3803S is classified as Obsolete. The B3803WS is an Active product from the same manufacturer, providing assured long-term availability and supply chain support.

Q: Are there mechanical compatibility concerns?

A: Both parts use NMO base mount termination and whip straight antenna configuration. The B3803WS specifies a maximum height of 9.921 inches (252.00mm). Verify this dimension against your installation space requirements.

Q: Do both parts meet RoHS compliance requirements?

A: Yes. Both the B3803S and B3803WS are RoHS Compliant with MSL rating 1 (Unlimited moisture sensitivity level).

Q: What is the frequency difference between these parts?

A: The B3803S operates at 380MHz center frequency. The B3803WS operates at 450MHz center frequency with a frequency range of 380MHz to 520MHz. The B3803WS frequency range encompasses the B3803S operating point.

Q: Are there power handling differences?

A: The B3803WS specifies a maximum power rating of 200W. The B3803S power specification is not provided in available documentation.

Q: What packaging is available for the B3803WS?

A: The B3803WS is supplied in Bulk packaging. The B3803S packaging specification is not provided.