HSFP28-2321 is a module of SFP28 for dual-work light data communications, supporting 25.78 Gb/s and 28.05 Gb/s data links. It supports thermal extraction function by using the SFP+20 glycerator. Digital diagnostic functions can be achieved through the I2C interface. It has a double clock and data restoration (CDR) feature. The module is designed for single fibre-optics, with a working wavelength of 1310 nm. The launcher uses high performance 1310 nm DFB laser, which meets the INS standard for type 1 lasers of IEC-60825. The receiver part uses a pre-movator (IDP) with an integrated IngaAs probe, installed in a fibre-optic connection and equipped with a limited banded back-migator.
| Parameter | Value |
| Operating Wavelength [Single-Mode Fiber] | 1310 nm |
| Launcher segment | High performance 1310 nm DFB laser |
| Receiver segment | Integrated IngaAs Pro-Memplifier (IDP), installed in fibre-optic connectors with limited-banded and later amplifier IC |
| Boot connector | 20 引脚 |
| Interface [Digital diagnostic function] | I2C |
| CDR | Internal Double |
| Data links | 25.78 Gb/s and 28.05 Gb/s |
| Power supply [Single] | +3.3 V |
| Working shell temperature | 0℃~+70℃ |
| Power Consumption | < 1.2 W |
| Monitor interface | Matching SFF-8472 |
| Launcher Disable Tx Disable [Laser Output Disable] | > 2.0V or open the road |
| Launcher Disable Tx Disable [Laser Output Enabled] | < 0.8 V |
| Electrical resistance [SDA / SCL / on the host board / pull up to a voltage between2.0V and3.6V] | 4.7kΩ to 10kΩ |
| Voltage [SDA / SCL / on the host board / pull up through a4.7kΩ to10kΩ resistor] | 2.0V to 3.6V |
| Electrical resistance [LOS / on the host board / pull up to a voltage between 2.0V and 3.6V] | 4.7kΩ to 10kΩ |
| Voltage [LOS / on the host board / pull up through a4.7kΩ to10kΩ resistor] | 2.0V to 3.6V |
| Electrical resistance [RS0 / RS1 / SFP28 module internal / lower to VeeR or VeeT] | Greater than 30kΩ |
| RS0 [Optionally control the SFP28 module receiver] | LVTTL Logic |
| RS1 [Optionally controlled SFP28 module launcher] | LVTTL Logic |
| MOD-ABS | Internal location of modules |
• 25GbE • 32GFC • Other light links
Complies with MSA SFP+ SFF-8402 and SFF-8472 monitoring. Single+3.3V supply; hot-pluggable; built-in dual CDR. Supports25.78Gb/s and28.05Gb/s links,up to10Km over9/125um SMF. Very low EMI and strong ESD protection; case0℃~+70℃; power<1.2W; RoHS compliant.
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Shenzhen Hi-Optel Technology Co., Ltd. (hereinafter referred to as "Hi-Optel") was established in May 1999 and is a pioneer in China's core optical communication optical module field and a mainstream high-end optical device manufacturer. The company has a registered capital of 100 million yuan, total assets of over 300 million yuan, more than 450 employees, and modern factory buildings of over 10,000 square meters. The company was officially listed on the National Equities Exchange and Quotations on May 18, 2015, with stock code: 832449, opening a new chapter in capitalization development.
Relying on advanced TO components, COB packaging technology, and intelligent production lines covering the full range of optical transceivers from 155M to 800G, Hi-Optel is committed to providing global customers with cost-effective and highly reliable active optical transceiver solutions. Products are widely used in key areas such as telecommunications networks, data centers, and artificial intelligence computing centers.
The company has built and continuously improved a comprehensive quality management system, and has obtained ISO 9001 quality management system certification, ISO 14001 environmental management system certification, ISO 45001 occupational health and safety management system certification, TL9000 telecommunications industry quality management system certification, and ESD protection system certification. All products comply with RoHS environmental standards and support international certifications such as CE, UL, TUV, KCC, and FDA, ensuring product compliance and competitiveness in the global market.
As a national high-tech enterprise and a specialized and sophisticated "little giant" enterprise, Hi-Optel has two provincial-level engineering technology research centers and has established a market-oriented R&D system with independent innovation as the core. The R&D team brings together high-end industry talents, has won more than 80 patents, and has undertaken multiple major scientific research projects from the National Development and Reform Commission, the Ministry of Science and Technology, and the Shenzhen Municipal Government.
The company is based in China and radiates globally. It has established a bonded factory in Malaysia to achieve overseas localized production and efficient delivery, supplemented by a global sales and technical support network to provide customers with agile, reliable, and customized supply chain assurance and service support.
Hi-Optel always adheres to the business philosophy of "integrity, responsibility, and win-win", and insists on open collaboration and win-win development. Its "Hi-Optel" brand optical devices and optical transceiver products have won market trust with excellent performance. The company also provides technical collaboration and OEM/ODM services for internationally renowned enterprises, continuously empowering customer value and building the future of the industry through technological breakthroughs, product innovation, and business model evolution.