QSFPTEK QSFP-40-100-SRBD Transceiver Module User Guide

: September 25, 2024
: QSFPTEK

Table of Contents

Quality Certification
Safety Information
Product Overview
QSFPTEK Transceiver Operation Guide
Transceiver Safety Guidelines
ESD Protection Considerations
Support and Other Resources
Product Warranty
Customer Support
References
Read User Manual Online (PDF format)
Download This Manual (PDF format)

QSFPTEK QSFP-40-100-SRBD Transceiver Module

Quality Certification

Safety Information

Note

Warning

Never look into fiber port

The tranceiver can only be installed or replace by qualified personnel

Please wear antistatic gloves

Caution against moisture.

Do not disassemble or modify.

Product Overview

10 G BASE-T SFP+
1000 BASE-T SFP
25G SFP28
25G BiDi SFP28
25G WDM SFP28
1 0G SFP+
1 0G Bi Di SFP+
1 0G WDM SFP+
1000 BASE SFP
1 00G QSFP28
S0G QSFP28
S0G BiDi QSFP28
40G QSFP+
40G BiDi QSFP+
800G QSFP-DD
800G OSFP
400G QSFP-DD
400G OSFP
200G QSFP-DD

QSFPTEK Transceiver Operation Guide

Tools Preparation

ESD wrist strap or comparable grounding device
Antistatic mat or antistatic foam
Optical fiber end-face cleaning tool
Troubleshooting equipment

Operation Guide

Note: Line up the module with the port and slide it gently into the port until the lock is fully seated

Note: When inserting a QSFP+ module, the label need to face down

Transceiver Safety Guidelines

Electrostatic Discharge Sensitivity (ESD)

All transceivers are vulnerable to ESD. While ESD poses no threat to humans, it can severely damage electronic components.

Always wear ESD protection gear(ESD Gloves, ESD Wrist Strap) when working with transceivers.
Avoid touching the electrical connectors, as they are particularly susceptible to ESD damage.

Wrong Operation

Must Work with ESD Protection

Cleanliness

Fiber optic devices are highly susceptible to contamination from dust, dirt, and grease.

To protect the QSFPTEK transceiver when not in use, always ensure the dust cap is securely placed.
Prior to connecting the fiber to the transceiver, confirm that it is free of contaminants by using specialized cleaning tools and performing a visual inspection.

Our transceiver cleaning and inspection processes strictly follow the IEC 61300-3-35 ED.1.0 standard.

ESD Protection Considerations

While many CAN transceivers come equipped with internal ESD protection circuits, these typically only safeguard against up to 8 kV of electrostatic discharge. However, as previously mentioned, certain environments can experience ESD surges as high as 30 kV. To enhance system-level ESD resilience, an external ESD protection diode is required. Below are the essential factors to consider when choosing the right ESD protection diode:

Working Voltage (Vrwm) and Polarity

The working voltage of the ESD diode depends on the application. Under ideal circumstances, the CAN bus voltage swings between Vcc (either 5 V or 3.3 V) on CANH and 0 V on CANL. However, in automotive applications, a common-mode voltage is influenced by the vehicle’s battery, which can vary. Smaller vehicles typically use 12 V batteries, while larger ones, like trucks, rely on 24 V systems. Additionally, the risk of incorrect jumpstarting—where two batteries are connected in series instead of parallel—can double the voltage. For a 12 V battery, a 24 V diode is necessary to prevent damage in such scenarios. In vehicles with 24 V systems made of two 12 V cells, a 36 V diode is required since each cell is charged separately. All ESD diodes must be bidirectional to protect against potential line faults and incorrect wiring.

IEC 61000-4-2 Rating

This standard defines an ESD waveform designed to simulate real-world conditions, unlike human body model (HBM) and charged device model (CDM) waveforms, which are meant for controlled environments. Environmental factors like temperature and humidity can intensify ESD strikes, so the ESD diode should have a minimum contact rating of 15 kV to ensure robust protection.

ISO 10605 Rating

ISO 10605 simulates automotive ESD strikes by using various capacitance and resistance combinations, unlike the IEC 61000-4-2 standard, which uses only 150 pF/330 Ω. The most challenging combination is 330 pF/330 Ω, which is even more stringent than IEC 61000-4-2. To withstand harsh automotive ESD conditions, the diode should also meet a 15 kV contact rating.

Capacitance

To minimize signal degradation, ESD diodes should have low capacitance. The maximum allowable capacitance depends on factors like signal speed (LS CAN vs. CAN FD), the transceiver’s own capacitance, the network size, and other components like filtering capacitors on CANH and CANL. Typically, it’s recommended to keep diode capacitance under 15 pF, though system designers often prefer even lower capacitance values to maximize the system’s overall capacitance budget.

Clamping Voltage

The required clamping voltage will depend on the specific CAN transceiver in use. The crucial point is that the clamping voltage should always be lower than the absolute maximum rating of the CANH and CANL pins to prevent damage.

Package

In many CAN-based systems, automatic optical inspection (AOI) is used to verify that all components are properly soldered. For compatibility with AOI processes, leaded packages such as SOT-23 and SC70 are recommended for ESD diodes.

Support and Other Resources

Contact us https://www.qsfptek.com/company/contact-us.html
Customer Success https://www.qsfptek.com/resources/customer-success-stories
Email support@qsfptek.com

Product Warranty

The transceiver products are backed by a 5-year limited warranty supported by QSFPTEK. You are eligible to apply for return and exchange within 30 days of receiving them.
For more details about applying qualifications, please live chat or email sales@qsfptek.com for support.

5 Year Warranty