RF Antenna 1.575GHz Module SMA Male Magnetic (Laird Connectivity 637114)

Part Overview

The Laird Connectivity 637114 is a 1.575GHz GPS module RF antenna with SMA male termination and magnetic mounting. This component is designed for navigation applications requiring precise GPS signal reception in the UHF frequency band (1GHz ~ 2GHz). The antenna features a 6-meter cable with integrated low-noise amplifier (LNA) and IP66 ingress protection for outdoor deployment.

The 637114 is discontinued at DiGi Electronics. Identifying equivalent substitute parts ensures continued availability for production, maintenance, and system upgrades while maintaining functional compatibility with existing designs.

Substiute Parts

637114

Laird Connectivity Inc.In Stock: 834637114 Datasheet

Current PartRFQ

AA.105.301111

Taoglas LimitedIn Stock: 5884AA.105.301111 Datasheet

SimilarRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution eligibility for GPS module RF antennas is determined by the following critical parameters:

Primary Compatibility Criteria:

• Center frequency alignment at 1.575GHz
• Frequency range overlap within navigation band specifications
• SMA male connector termination
• Magnetic mounting configuration
• Module antenna type
• GPS application classification
• Compliance certifications (RoHS, REACH)

Secondary Compatibility Factors:

• VSWR performance within acceptable operating range
• Gain characteristics suitable for GPS reception
• Ingress protection rating equal to or exceeding IP66
• Height and form factor compatibility (14.00mm maximum)
• Integrated LNA functionality

The Taoglas Limited AA.105.301111 qualifies as a substitute based on matching primary criteria: identical center frequency (1.575GHz), overlapping frequency range (1.57GHz ~ 1.58GHz encompasses the 1.574GHz ~ 1.576GHz specification), SMA male termination, magnetic mounting, module type, GPS application, and equivalent compliance status.

Parameter Comparison

Engineering Selection Recommendations

Laird Connectivity 637114 Characteristics: The 637114 is discontinued, limiting procurement options for new inventory. This part provides 4dBic gain with a 6-meter cable configuration, suitable for applications requiring extended cable runs or higher signal amplification.

Taoglas Limited AA.105.301111 Characteristics: The AA.105.301111 is actively produced and available in high inventory (5785 pcs). This part meets current ROHS3 compliance standards and provides superior VSWR performance (1.92 vs. 2.0) and enhanced ingress protection (IP67 vs. IP66). The 3-meter cable length accommodates standard installation distances.

Selection Basis:

• For discontinued part replacement: The AA.105.301111 provides functional equivalence with active product status and current compliance certifications.
• For new designs: The AA.105.301111 offers superior electrical performance (VSWR) and environmental protection (IP67).
• Cable length consideration: Applications requiring cable lengths exceeding 3 meters must evaluate the 6-meter vs. 3-meter cable difference as a design constraint.

Both parts share identical center frequency, frequency band overlap, SMA male termination, magnetic mounting, module type, and integrated LNA functionality, establishing substitution compatibility for GPS navigation applications.

Frequently Asked Questions (FAQ)

Q: Can the Taoglas AA.105.301111 directly replace the Laird 637114 in existing designs?

A: Yes, for applications where the 3-meter cable length is acceptable. Both parts feature identical center frequency (1.575GHz), SMA male termination, magnetic mounting, and integrated LNA. The AA.105.301111 provides superior VSWR (1.92 vs. 2.0) and ingress protection (IP67 vs. IP66). The primary design consideration is cable length: the 637114 provides 6 meters while the AA.105.301111 provides 3 meters.

Q: What are the key parameters that determine substitution eligibility?

A: Substitution eligibility is based on: center frequency alignment (1.575GHz), frequency range overlap within GPS band specifications, identical connector type (SMA male), identical mounting method (magnetic), module antenna type, GPS application classification, and compliance certifications (RoHS, REACH). Secondary factors include VSWR performance, gain characteristics, ingress protection rating, and physical dimensions.

Q: How do the gain specifications differ between these parts?

A: The Laird 637114 provides 4dBic gain, while the Taoglas AA.105.301111 provides 2dBic gain. This 2dB difference represents a power ratio of approximately 1.58:1. Applications requiring maximum signal amplification should evaluate whether the lower gain of the AA.105.301111 meets system sensitivity requirements.

Q: What is the significance of the VSWR difference?

A: The Taoglas AA.105.301111 provides VSWR of 1.92 compared to the Laird 637114's VSWR of 2.0. Lower VSWR indicates better impedance matching and reduced signal reflection. The AA.105.301111's superior VSWR performance results in more efficient power transfer and improved antenna efficiency.

Q: Are there compliance differences between these parts?

A: Both parts are RoHS compliant and REACH unaffected. The Laird 637114 meets RoHS Compliant status, while the Taoglas AA.105.301111 meets the current ROHS3 Compliant standard. Both parts carry identical ECCN (7A994) and HTSUS (8529.10.4040) classifications.

Q: What is the impact of the ingress protection rating difference?

A: The Laird 637114 provides IP66 protection (dust-tight, high-pressure water jets), while the Taoglas AA.105.301111 provides IP67 protection (dust-tight, temporary immersion). The IP67 rating of the AA.105.301111 offers enhanced environmental protection for applications subject to temporary water immersion or more severe moisture exposure.

Q: How should cable length be evaluated for substitution?

A: The 6-meter cable of the 637114 accommodates longer installation distances from the receiver unit. The 3-meter cable of the AA.105.301111 is suitable for standard mounting configurations. Applications requiring cable lengths exceeding 3 meters must either use the 637114 or implement external cable extensions, which may affect impedance matching and signal quality.

Q: What is the inventory status of these parts?

A: The Laird 637114 is discontinued at DiGi Electronics with limited availability. The Taoglas AA.105.301111 is actively produced with 5785 pcs in stock, ensuring reliable procurement for production and maintenance applications.