HFBR-2528Z Frequently Asked Questions (FAQs)


What is the recommended PCB layout for optimal performance of the HFBR-2528Z?
A 4-layer PCB with a solid ground plane and a separate power plane is recommended. The transmitter and receiver should be placed close to the fiber optic connector to minimize EMI. A detailed layout guide is available in the application note AN815.


How do I ensure reliable operation of the HFBR-2528Z over the entire operating temperature range?
Ensure that the device is operated within the recommended power supply voltage range (3.3V ± 10%) and that the PCB is designed to minimize thermal resistance. Additionally, follow the recommended thermal management guidelines to prevent overheating.


What is the maximum cable length supported by the HFBR-2528Z?
The HFBR-2528Z supports cable lengths up to 10 km at 1 Gb/s and up to 5 km at 2.5 Gb/s, depending on the fiber type and quality. However, the actual cable length may vary depending on the specific application and fiber optic infrastructure.


How do I troubleshoot issues with the HFBR-2528Z, such as no signal or intermittent signal loss?
Check the power supply voltage, ensure proper PCB layout and routing, and verify that the fiber optic connector is securely connected. Use an oscilloscope to verify the signal integrity and check for any signs of signal degradation or distortion.


Is the HFBR-2528Z compatible with other fiber optic transceivers or modules?
The HFBR-2528Z is a SFP+ transceiver module that conforms to the SFP+ MSA (Multi-Source Agreement). It is compatible with other SFP+ transceivers and modules that comply with the SFP+ MSA.