GPSIM15 Equivalent & Substitute Parts Reference

Part Overview

The GPSIM15 is a 1.575GHz GPS module RF antenna manufactured by TE Connectivity Laird, designed for navigation applications requiring chassis-mounted SMA male termination. This antenna delivers 2.5dBi gain with a 1.5-meter cable assembly and operates within the UHF frequency band (1GHz–2GHz). The product is currently classified as obsolete, necessitating identification of functionally equivalent alternatives for ongoing system support and new design implementations.

Substiute Parts

GPSIM15

TE Connectivity LairdIn Stock: 1074GPSIM15 Datasheet

Current PartRFQ

AR251575008CCLF

API Technologies CorpIn Stock: 939AR251575008CCLF Datasheet

SimilarRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution eligibility for the GPSIM15 is determined by strict alignment of the following critical parameters:

Primary Substitution Criteria:

• Frequency center band: 1.575GHz (GPS L1 band)
• Frequency group: UHF (1GHz–2GHz)
• Antenna type: Module
• Number of bands: Single band (1)
• Termination type: SMA Male connector
• Mounting configuration: Chassis Mount
• Application category: GPS navigation
• ECCN classification: 7A994

Secondary Compatibility Parameters:

• Gain range: 2.0–2.5dBi (acceptable variance for GPS module applications)
• Cable length: Approximately 250–1500mm
• Height constraint: Maximum 0.505" (12.83mm) for mechanical fit
• Moisture sensitivity: MSL 1 (Unlimited)

The AR251575008CCLF qualifies as a direct substitute based on matching all primary criteria and operating within acceptable secondary parameter ranges.

Parameter Comparison

Engineering Selection Recommendations

Substitution Feasibility:

The AR251575008CCLF (API Technologies Corp) is a qualified substitute for the obsolete GPSIM15 based on electrical and mechanical parameter alignment. Both components operate at the GPS L1 frequency (1.575GHz), utilize identical SMA Male termination, support chassis-mount installation, and carry matching ECCN 7A994 export classification.

Critical Considerations:

1. Gain Differential: The AR251575008CCLF provides 2dBic gain versus the GPSIM15's 2.5dBi. This 0.5dB reduction is within acceptable variance for GPS module applications and does not preclude functional substitution.

2. Cable Length Variance: The GPSIM15 includes a 1.5-meter cable assembly, while the AR251575008CCLF provides 254mm (approximately 10 inches). System integration must accommodate this dimensional difference through external cabling or connector routing modifications.

3. Mounting Configuration: The AR251575008CCLF offers both magnetic and chassis-mount options, providing greater installation flexibility than the GPSIM15's chassis-mount-only design.

4. Height Profile: The AR251575008CCLF's maximum height of 0.505" (12.83mm) exceeds the GPSIM15's 0.250" (6.35mm). Mechanical clearance verification is required for space-constrained applications.

5. Regulatory Compliance: Both components share identical ECCN classification (7A994) and MSL 1 moisture sensitivity rating, ensuring equivalent compliance posture for export and environmental handling.

Inventory Status:

GPSIM15: 966 pieces (new original, in stock) AR251575008CCLF: 834 pieces (new original, in stock)

Frequently Asked Questions (FAQ)

Q: Can the AR251575008CCLF directly replace the GPSIM15 without design modification?

A: Electrical substitution is direct. Mechanical integration requires assessment of cable length requirements and height clearance. The GPSIM15's 1.5-meter cable versus the AR251575008CCLF's 254mm cable necessitates system-level evaluation.

Q: What is the significance of the gain difference (2.5dBi vs. 2dBic)?

A: The 0.5dB variance falls within acceptable tolerance for GPS navigation applications. The "ic" notation (isotropic circular) indicates circular polarization reference, while "i" indicates isotropic reference. Both are compatible with standard GPS receiver systems.

Q: Are both parts subject to the same export restrictions?

A: Yes. Both components carry ECCN 7A994 classification, indicating identical export control status and regulatory treatment.

Q: What does MSL 1 (Unlimited) mean for component handling?

A: MSL 1 indicates the component has unlimited shelf life and requires no special moisture-control packaging or baking procedures prior to assembly. Both the GPSIM15 and AR251575008CCLF share this classification.

Q: Is the magnetic mounting feature of the AR251575008CCLF a compatibility advantage?

A: The magnetic mount option provides additional installation flexibility for applications requiring temporary or repositionable antenna placement. For fixed chassis-mount applications, this feature is supplementary and does not affect core substitution eligibility.

Q: How do VSWR specifications affect substitution?

A: The AR251575008CCLF specifies VSWR of 2.1. The GPSIM15 does not provide VSWR data. A VSWR of 2.1 is acceptable for GPS module applications and indicates adequate impedance matching at 1.575GHz.

Q: Can cable length be extended on the AR251575008CCLF to match the GPSIM15's 1.5-meter assembly?

A: Yes. External SMA-to-SMA extension cables or custom harnesses can accommodate length requirements. System designers must account for cable loss and impedance characteristics in RF path calculations.