B3803WR RF Antenna 450MHz Whip Straight NMO Base Mount

Part Overview

The B3803WR is a 450MHz whip antenna manufactured by TE Connectivity Laird, designed for UHF applications within the 380MHz to 520MHz frequency range. This antenna features a straight whip configuration with NMO base mount termination and delivers 3dBi gain with a maximum power rating of 200W. The product is currently classified as obsolete, necessitating identification of active substitute components to maintain system compatibility and ensure continued availability for replacement and new installations.

Substiute Parts

B3803WR

TE Connectivity LairdIn Stock: 1158B3803WR Datasheet

Current PartRFQ

B3803WS

TE Connectivity LairdIn Stock: 860B3803WS Datasheet

SimilarRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution of the B3803WR is determined by strict equivalence across the following critical parameters:

Electrical Parameters:

• Frequency band: 450MHz center frequency with 380MHz ~ 520MHz operating range
• Antenna gain: 3dBi
• VSWR: 2
• Maximum power handling: 200W

Mechanical Parameters:

• Antenna configuration: Whip, straight type
• Termination interface: NMO base mount
• Mounting method: Base mount

Compliance Parameters:

• RoHS compliance status
• Moisture sensitivity level (MSL 1)

The B3803WS qualifies as a direct substitute because it maintains identical electrical performance specifications, the same NMO termination and base mount configuration, and equivalent RoHS compliance. The primary difference is product status (active versus obsolete) and physical height variation (9.921" versus 9.125"), which does not affect electrical substitutability within the same mechanical envelope class.

Parameter Comparison

Engineering Selection Recommendations

The B3803WS is the direct substitute for the obsolete B3803WR. Selection of the B3803WS is supported by the following engineering criteria:

Electrical Equivalence: Both parts operate at identical center frequency (450MHz), frequency range (380MHz ~ 520MHz), gain (3dBi), VSWR (2), and maximum power (200W). No performance degradation or system recalibration is required.

Mechanical Compatibility: Both antennas employ NMO base mount termination and straight whip configuration. The height difference (9.921" versus 9.125") remains within the mechanical envelope of base mount antenna installations and does not compromise mounting compatibility.

Compliance Status: The B3803WS maintains RoHS compliance and MSL 1 rating, ensuring regulatory and environmental compatibility with the original specification.

Availability: The B3803WS is classified as active product status with current inventory availability (769 Pcs), whereas the B3803WR is obsolete. Selection of the B3803WS ensures long-term supply continuity and eliminates obsolescence risk.

Frequently Asked Questions (FAQ)

Q: Can the B3803WS be used as a direct replacement for the B3803WR in existing installations?

A: Yes. The B3803WS is electrically and mechanically equivalent to the B3803WR. Both parts share identical frequency band, gain, VSWR, power rating, and NMO base mount termination. The antenna can be directly substituted without system modification.

Q: What is the significance of the height difference between B3803WR (9.125") and B3803WS (9.921")?

A: The height difference of approximately 0.8 inches falls within the tolerance envelope of base mount antenna installations. This variation does not affect electrical performance, impedance matching, or mechanical mounting compatibility. Physical clearance should be verified in space-constrained applications.

Q: Are there any compliance or certification differences between the two parts?

A: No. Both the B3803WR and B3803WS are RoHS compliant and carry MSL 1 (Unlimited) moisture sensitivity rating. Regulatory and environmental compliance is equivalent.

Q: Why is the B3803WR classified as obsolete?

A: Product obsolescence is determined by manufacturer lifecycle decisions. The B3803WS represents the active continuation of this antenna family and should be selected for new designs and replacement applications.

Q: What packaging differences exist between these parts?

A: The B3803WR is supplied in standard packaging, while the B3803WS is supplied in bulk packaging. Packaging format does not affect electrical or mechanical performance.

Q: Are there any frequency band restrictions or regional limitations for the B3803WS?

A: The B3803WS operates across the 380MHz ~ 520MHz range, covering the 450MHz center frequency. Regional frequency allocations should be verified against local regulatory requirements, but the antenna itself has no inherent regional restrictions based on the provided specifications.