ACA-103-T RF Antenna Equivalent & Substitute Parts

Part Overview

The ACA-103-T is a dual-band chip RF antenna manufactured by Abracon LLC, designed for 2.4GHz and 5.5GHz Bluetooth and WLAN applications. This component operates across 2.4GHz ~ 2.485GHz and 5.15GHz ~ 5.825GHz frequency ranges with a gain of -1.37dBi and surface mount solder termination. The product is currently obsolete, making identification of compatible substitute parts essential for ongoing system support and new design implementations.

Key Parameters

Parameter	Value
Manufacturer Part Number	ACA-103-T
Manufacturer	Abracon LLC
Antenna Type	Chip
Frequency (Center/Band)	2.4GHz, 5.5GHz
Frequency Range	2.4GHz ~ 2.485GHz, 5.15GHz ~ 5.825GHz
Number of Bands	2
Gain	-1.37dBi
VSWR	3
Mounting Type	Surface Mount
Termination	Solder
Height (Max)	0.047" (1.20mm)
RF Family/Standard	Bluetooth, WiFi
Product Status	Obsolete
RoHS Status	ROHS3 Compliant
MSL Rating	1 (Unlimited)

Substitute Part Grouping Explanation

Substitution eligibility for the ACA-103-T is determined by the following critical parameters:

Primary Substitution Criteria:

Frequency coverage: Must support 2.4GHz and 5.5GHz dual-band operation
Antenna type: Chip configuration
Mounting: Surface mount capability
Termination: Solder connection
RF standards: Bluetooth and WiFi compatibility
Compliance: ROHS3 compliance and EAR99 classification

Substitute Parts Identified:

WDP.2458.25.4.B.02 (Taoglas Limited) — Primary substitute. Matches frequency bands (2.4GHz ~ 2.5GHz, 5.15GHz ~ 5.85GHz), dual-band configuration, surface mount, and WiFi standard. Differs in antenna type (ceramic patch vs. chip) and termination (pin vs. solder), requiring PCB layout modification.
PCS.07.A (Taoglas Limited) — Not suitable. Operates on cellular bands (850MHz, 900MHz, 1.8GHz, 1.9GHz, 2.1GHz) with no 2.4GHz/5.5GHz coverage. Incompatible with Bluetooth/WLAN applications.

Parameter Comparison

Parameter	ACA-103-T	WDP.2458.25.4.B.02	PCS.07.A
Manufacturer	Abracon LLC	Taoglas Limited	Taoglas Limited
Antenna Type	Chip	Ceramic Patch	Chip
Frequency (Center/Band)	2.4GHz, 5.5GHz	2.4GHz, 5.5GHz	850MHz, 900MHz, 1.8GHz, 1.9GHz, 2.1GHz
Frequency Range	2.4GHz ~ 2.485GHz, 5.15GHz ~ 5.825GHz	2.4GHz ~ 2.5GHz, 5.15GHz ~ 5.85GHz	824MHz ~ 960MHz, 1.71GHz ~ 2.17GHz
Number of Bands	2	2	5
Gain	-1.37dBi	6dBi, 8dBi	-1.96dBi, 1.77dBi, 2.9dBi, 2.83dBi, 2.57dBi
Mounting Type	Surface Mount	Surface Mount	Surface Mount
Termination	Solder	Pin	Solder
Height (Max)	0.047" (1.20mm)	0.157" (4.00mm)	0.118" (3.00mm)
RF Family/Standard	Bluetooth, WiFi	WiFi	Cellular (CDMA, DCS, EDGE, GPRS, GSM, HSDPA, PCS, UMTS, WCDMA)
Product Status	Obsolete	Active	Active
RoHS Status	ROHS3 Compliant	ROHS3 Compliant	ROHS3 Compliant
MSL Rating	1 (Unlimited)	1 (Unlimited)	3 (168 Hours)

Engineering Selection Recommendations

WDP.2458.25.4.B.02 is the only viable substitute for ACA-103-T applications. Both parts are ROHS3 compliant, EAR99 classified, and maintain active product status with unlimited MSL ratings. The WDP.2458.25.4.B.02 covers the required 2.4GHz and 5.5GHz frequency bands with expanded range coverage (2.4GHz ~ 2.5GHz, 5.15GHz ~ 5.85GHz).

Critical design considerations: The WDP.2458.25.4.B.02 uses pin termination instead of solder, requiring PCB footprint redesign. The ceramic patch antenna type differs from the chip configuration, resulting in higher gain (6dBi, 8dBi vs. -1.37dBi) and increased height (4.00mm vs. 1.20mm). These physical and electrical differences necessitate full system re-qualification.

PCS.07.A is not applicable. Its frequency bands (850MHz ~ 2.17GHz) do not overlap with the 2.4GHz/5.5GHz requirement and are designed for cellular standards, not Bluetooth/WLAN applications.

Frequently Asked Questions (FAQ)

Q: Can PCS.07.A replace ACA-103-T in Bluetooth/WLAN designs? A: No. PCS.07.A operates on cellular frequency bands (850MHz, 900MHz, 1.8GHz, 1.9GHz, 2.1GHz) and lacks coverage for 2.4GHz and 5.5GHz. It is designed for CDMA, GSM, and UMTS standards, not Bluetooth or WiFi.

Q: What are the main differences between ACA-103-T and WDP.2458.25.4.B.02? A: Both support 2.4GHz and 5.5GHz dual-band operation. Key differences: ACA-103-T uses chip antenna with solder termination (1.20mm height), while WDP.2458.25.4.B.02 uses ceramic patch antenna with pin termination (4.00mm height). Gain differs significantly (-1.37dBi vs. 6dBi/8dBi). PCB redesign is required for substitution.

Q: Is WDP.2458.25.4.B.02 frequency coverage compatible with ACA-103-T? A: Yes. WDP.2458.25.4.B.02 frequency ranges (2.4GHz ~ 2.5GHz, 5.15GHz ~ 5.85GHz) encompass ACA-103-T ranges (2.4GHz ~ 2.485GHz, 5.15GHz ~ 5.825GHz). Frequency compatibility is confirmed.

Q: What packaging differences exist between these parts? A: ACA-103-T packaging is not specified in available data. WDP.2458.25.4.B.02 is supplied in Tray packaging. PCS.07.A is supplied in Tape & Reel (TR) packaging. Verify packaging requirements for your procurement process.

Q: Are all substitute candidates ROHS3 compliant? A: Yes. ACA-103-T, WDP.2458.25.4.B.02, and PCS.07.A are all ROHS3 compliant and EAR99 classified. Compliance status does not differentiate substitution eligibility.

Q: Why is ACA-103-T obsolete? A: Product status is obsolete. WDP.2458.25.4.B.02 and PCS.07.A maintain active status with current inventory availability (781 Pcs and 1470 Pcs respectively).

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