Antenova A10381 RF Antenna 2.4GHz Equivalent & Substitute Parts

Part Overview

The Antenova A10381 is a 2.4GHz chip RF antenna designed for Bluetooth, Wi-Fi, and Zigbee applications. This part operates in the UHF frequency band (2GHz ~ 3GHz) with a center frequency of 2.4GHz and a frequency range of 2.4GHz ~ 2.5GHz. The A10381 features a 1.5dBi gain, 1.6 VSWR, and -10dB return loss with solder termination for surface mount applications.

The A10381 is currently listed as obsolete. Identifying equivalent and substitute parts is necessary to maintain design continuity and ensure component availability for new production runs and legacy system support.

Substiute Parts

A10381

AntenovaIn Stock: 5014A10381 Datasheet

Current PartRFQ

SR4W035

AntenovaIn Stock: 3004SR4W035 Datasheet

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SRC5G027

AntenovaIn Stock: 9909SRC5G027 Datasheet

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SRCW004

AntenovaIn Stock: 88572SRCW004 Datasheet

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Key Parameters

Substitute Part Grouping Explanation

Substitution eligibility for the A10381 is determined by the following critical parameters:

Primary Substitution Criteria:

• Frequency band alignment: Center frequency and frequency range must support 2.4GHz ~ 2.5GHz operation
• Antenna type: Chip antenna configuration
• Termination method: Solder termination
• Mounting type: Surface mount
• RF standards compatibility: Support for Bluetooth, Wi-Fi, and/or Zigbee protocols

Secondary Compatibility Factors:

• VSWR and return loss performance within acceptable ranges for the application
• Gain characteristics suitable for the intended RF link budget
• Physical dimensions compatible with PCB layout constraints
• Moisture sensitivity level and environmental compliance

Based on these criteria, the substitute parts are grouped as follows:

Group 1 - Direct 2.4GHz Substitutes (Frequency-Compatible):

• SR4W035: 2.4GHz center frequency, 2.4GHz ~ 2.5GHz range, active product status
• SRCW004: 2.4GHz center frequency, 2.4GHz ~ 2.5GHz range, active product status

Group 2 - Frequency-Incompatible (Not Recommended for Direct Substitution):

• SRC5G027: 5.4GHz center frequency, 4.9GHz ~ 5.9GHz range; operates in SHF band and does not support 2.4GHz operation

Parameter Comparison

Engineering Selection Recommendations

Recommended Substitutes for 2.4GHz Applications:

SR4W035 is suitable for direct substitution in designs where higher gain (4.6dBi vs. 1.5dBi) is acceptable or beneficial. This part maintains identical frequency range (2.4GHz ~ 2.5GHz), identical return loss (-10dB), and compatible VSWR (1.8 vs. 1.6). SR4W035 is active product status with full REACH compliance. The reduced height (0.016" vs. 0.026") may provide PCB layout advantages. Gain increase of 2dBi will improve RF link performance.

SRCW004 is suitable for direct substitution with moderate gain increase (2.5dBi vs. 1.5dBi). This part maintains identical frequency range, identical VSWR (1.6), and identical return loss (-10dB). SRCW004 is active product status with RoHS compliance and REACH unaffected status. Height is 0.020", intermediate between A10381 and SR4W035. This part offers balanced performance improvement with minimal design impact.

Not Recommended for Direct Substitution:

SRC5G027 operates at 5.4GHz center frequency (4.9GHz ~ 5.9GHz range) and is not suitable for 2.4GHz applications. Frequency incompatibility makes this part unsuitable for Bluetooth, Wi-Fi, and Zigbee designs requiring 2.4GHz operation.

Frequently Asked Questions (FAQ)

Q: Can SR4W035 replace A10381 in my 2.4GHz Bluetooth design?

A: Yes. SR4W035 operates at the same 2.4GHz center frequency and 2.4GHz ~ 2.5GHz range as A10381. Both parts support Bluetooth, Wi-Fi, and 802.15.4 standards. SR4W035 provides higher gain (4.6dBi vs. 1.5dBi) and improved return loss performance. The reduced height (0.016" vs. 0.026") is compatible with standard PCB layouts. SR4W035 is active product status.

Q: What is the difference between SRCW004 and SR4W035?

A: Both parts operate at 2.4GHz and are suitable substitutes for A10381. SR4W035 provides higher gain (4.6dBi vs. 2.5dBi) and lower height (0.016" vs. 0.020"). SRCW004 offers intermediate gain and includes General ISM band support in addition to Bluetooth, Wi-Fi, and 802.15.4. SRCW004 includes RoHS compliance certification. Selection depends on specific gain requirements and compliance mandates.

Q: Why is SRC5G027 listed as a substitute if it operates at 5.4GHz?

A: SRC5G027 is not a suitable substitute for 2.4GHz applications. This part is frequency-incompatible and operates in the SHF band (4.9GHz ~ 5.9GHz). SRC5G027 is appropriate only for 5GHz Wi-Fi (802.11a/ac/ax) or other 5GHz ISM band applications. For 2.4GHz designs, use SR4W035 or SRCW004.

Q: Are there packaging differences between A10381 and the substitute parts?

A: Yes. A10381 uses standard packaging (not specified as Tape & Reel). SR4W035, SRCW004, and SRC5G027 are supplied in Tape & Reel (TR) packaging. Tape & Reel packaging is standard for high-volume production and is compatible with automated assembly equipment. Confirm packaging requirements with your procurement and assembly processes.

Q: What is the impact of gain differences on my design?

A: A10381 provides 1.5dBi gain. SR4W035 provides 4.6dBi (2dBi increase), and SRCW004 provides 2.5dBi (1dBi increase). Higher gain improves RF link budget and reception sensitivity. If your design is already optimized for 1.5dBi gain, higher-gain substitutes will improve performance. If your design operates near regulatory power limits, verify that increased gain does not exceed local RF emission regulations.

Q: Are all substitute parts REACH compliant?

A: Yes. A10381, SR4W035, SRCW004, and SRC5G027 all have REACH Unaffected status. SRCW004 and SRC5G027 additionally carry RoHS Compliance certification. All parts have Moisture Sensitivity Level 1 (Unlimited), indicating no special moisture handling requirements.