Antenova A5645 RF Antenna Equivalent & Substitute Parts

Part Overview

The Antenova A5645 is a 2.4GHz PCB trace surface mount RF antenna designed for Bluetooth, WiMedia™, WLAN, and Zigbee™ applications. Operating across the 2.4GHz to 2.5GHz frequency band, this antenna delivers 1.2dBi gain with a VSWR of 1.5. The A5645 is classified as obsolete, making identification of compatible substitute parts essential for ongoing design support and production continuity.

Substiute Parts

A5645

AntenovaIn Stock: 7882A5645 Datasheet

Current PartRFQ

A5645H

AntenovaIn Stock: 1472A5645H Datasheet

DirectRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution of the A5645 is determined by the following critical parameters:

• Frequency range compatibility (2.4GHz ~ 2.5GHz band)
• Surface mount form factor and solder termination
• Maximum height constraint of 0.130" (3.30mm)
• RF standards support (Bluetooth, WiFi, 802.15.4)
• RoHS compliance and MSL rating

The A5645H qualifies as a direct substitute based on these criteria. Both parts operate within the identical frequency band, share the same series designation (Mica), employ solder surface mount technology, and maintain equivalent physical dimensions. The A5645H is actively produced, addressing the obsolescence status of the original A5645.

Parameter Comparison

Engineering Selection Recommendations

The A5645H is the appropriate substitute for the obsolete A5645. Both components maintain RoHS compliance and identical MSL ratings, ensuring equivalent handling and storage requirements. The A5645H is currently in active production status, providing assured supply for new designs and production continuity for existing applications.

The primary difference between the parts is antenna construction type: the A5645 uses PCB trace technology while the A5645H employs chip antenna design. Both operate within the specified 2.4GHz to 2.5GHz frequency band and support identical RF standards. The A5645H exhibits a slightly higher VSWR (1.8 versus 1.5), which remains within acceptable parameters for the supported applications.

Frequently Asked Questions (FAQ)

Q: Can the A5645H directly replace the A5645 in existing PCB designs?

A: The A5645H maintains identical solder termination, surface mount configuration, and maximum height of 0.130" (3.30mm), enabling direct footprint compatibility. However, the shift from PCB trace to chip antenna design may require RF performance validation in your specific application due to the VSWR difference (1.8 versus 1.5).

Q: What is the significance of the antenna type difference between A5645 and A5645H?

A: The A5645 is a PCB trace antenna integrated into the circuit board layout, while the A5645H is a discrete chip antenna component. Both operate across the identical 2.4GHz to 2.5GHz frequency range and support the same RF standards. The chip antenna approach of the A5645H may offer different integration characteristics and performance profiles depending on PCB layout and component placement.

Q: Are there compliance differences between the A5645 and A5645H?

A: Both parts maintain identical RoHS compliance status and MSL rating of 1 (Unlimited). No compliance differentiation exists between the two components.

Q: Why is the A5645 listed as obsolete?

A: The A5645 has been discontinued by Antenova. The A5645H represents the active production alternative within the Mica series, ensuring continued availability for applications requiring 2.4GHz surface mount RF antenna solutions.

Q: What packaging options are available for the A5645H?

A: The A5645H is supplied in Cut Tape (CT) packaging format.