ACA-104-T RF Antenna Equivalent & Substitute Parts

Part Overview

The ACA-104-T is a 1.575GHz GPS chip RF antenna manufactured by Abracon LLC, designed for surface mount applications in navigation systems. This component operates within the UHF frequency band (1GHz ~ 2GHz) with a center frequency of 1.575GHz and a frequency range of 1.57GHz ~ 1.58GHz. The part is classified as Obsolete, making identification of functionally equivalent alternatives necessary for ongoing production support and design continuity.

Substiute Parts

ACA-104-T

Abracon LLCIn Stock: 1074ACA-104-T Datasheet

Current PartRFQ

AH316M157501-T

Taiyo YudenIn Stock: 1211AH316M157501-T Datasheet

MFR RecommendedRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution eligibility for the ACA-104-T is determined by the following critical parameters:

• Center Frequency: 1.575GHz (GPS L1 band standard)
• Frequency Range: Must encompass or closely align with 1.57GHz ~ 1.58GHz
• Antenna Type: Chip configuration required
• Mounting Type: Surface Mount (SMD) required
• Termination: Solder connection required
• RF Family/Standard: Navigation (GPS) applications
• VSWR: 3 or better
• RoHS Compliance: ROHS3 Compliant

The substitute part AH316M157501-T from Taiyo Yuden meets these core substitution criteria. Both parts operate at the same center frequency (1.575GHz), share identical antenna type (Chip), mounting configuration (Surface Mount), termination method (Solder), RF standard (Navigation), VSWR specification (3), and RoHS compliance status (ROHS3).

Parameter Comparison

Engineering Selection Recommendations

The AH316M157501-T from Taiyo Yuden is a direct functional equivalent for the obsolete ACA-104-T. Both components share identical electrical specifications for center frequency, VSWR, and RF standard, with full RoHS3 compliance and unlimited moisture sensitivity rating.

The AH316M157501-T offers a reduced maximum height (0.020" versus 0.047"), which provides a space advantage in compact PCB designs. The frequency range of the Taiyo Yuden part (1.574GHz ~ 1.576GHz) is narrower than the Abracon part but remains within the GPS L1 band operational window.

Both parts carry product status designations indicating limited availability: ACA-104-T is Obsolete, while AH316M157501-T is Not For New Designs. For new production requirements, evaluation of current-generation GPS antenna alternatives is recommended based on design specifications and supply chain availability.

Frequently Asked Questions (FAQ)

Q: Can the AH316M157501-T replace the ACA-104-T in existing designs?

A: Yes. Both parts operate at 1.575GHz center frequency, share identical VSWR (3), mounting type (Surface Mount), termination method (Solder), and RF standard (Navigation/GPS). Electrical compatibility is established through these matching parameters.

Q: What is the difference in physical dimensions between these parts?

A: The primary dimensional difference is maximum height. The ACA-104-T has a maximum height of 0.047" (1.20mm), while the AH316M157501-T measures 0.020" (0.50mm). This 0.027" reduction may affect PCB layout and clearance considerations in space-constrained applications.

Q: Are there frequency range differences that affect GPS operation?

A: The ACA-104-T operates across 1.57GHz ~ 1.58GHz, while the AH316M157501-T operates across 1.574GHz ~ 1.576GHz. The Taiyo Yuden part has a narrower range but maintains full coverage of the GPS L1 center frequency at 1.575GHz. Both ranges are within standard GPS operational parameters.

Q: What is the packaging difference between these parts?

A: The ACA-104-T is supplied in standard packaging, while the AH316M157501-T is supplied in Tape & Reel (TR) format. Tape & Reel packaging is standard for high-volume surface mount production and does not affect component functionality.

Q: Are both parts RoHS compliant?

A: Yes. Both the ACA-104-T and AH316M157501-T are ROHS3 Compliant with MSL Rating 1 (Unlimited), meeting current environmental and regulatory requirements.

Q: Why are both parts marked with limited availability status?

A: The ACA-104-T is classified as Obsolete, indicating discontinued production. The AH316M157501-T is classified as Not For New Designs, indicating limited ongoing support. For new production programs, current-generation GPS antenna components should be evaluated.