Hisense LTF8505-BC1 Compatible 25GBASE-SR SFP28 Transceiver

EdgeOptic's LTF8505-BC1 compatible is a Hisense Broadband-coded version of the EdgeOptic 25G-SFP28-100 multi-vendor 25GBASE-SR SFP28 transceiver. The module ships with Hisense Broadband-recognized EEPROM vendor and part-number strings, so any MSA-compliant 25G SFP28 host that reads the optical identifier for inventory or telemetry sees the module as a Hisense part. LTF8505-BC1 is a distinct Hisense ordering code from the LTF8505-BC+ base model and from the Intel-coded LTF8505-BC-IN variant; the three are separate part numbers and should not be used interchangeably on a BOM without confirming against the vendor reference for the target platform.

Optical behavior follows the family root spec: 25GBASE-SR per IEEE 802.3by Clause 112 over duplex multi-mode fiber, 100 m on OM4 and OM5, 70 m on OM3. The 850 nm VCSEL transmitter is rated for TX power −5 to +2.4 dBm; the PIN photodiode receiver carries a sensitivity of −10.3 dBm and an overload of +2.4 dBm, with a 5.3 dB link budget. RS-FEC per IEEE 802.3by Clause 108 (RS(528,514)) applies when the host port enables it; verify FEC configuration against the host switch documentation. Line rate spans 10.31 to 25.78 Gbps on the EdgeOptic compatible, covering 10GBASE-SR and 25GBASE-SR host rates. Power dissipation is 0.3 W maximum across the 0 to 70°C commercial case-temperature range. The connector is LC/UPC duplex; DOM telemetry is exposed per SFF-8472.

Hisense Broadband is an OEM optical manufacturer, and the LTF8505 series ships both as standalone Hisense-coded parts and as the optical building block behind several major-vendor branded ordering codes. The standalone Hisense LTF8505-BC1 is specified against MSA-compliant 25G SFP28 ports rather than against a specific switch or NIC family. The module's SFP28 mechanical and management interfaces follow SFF-8402, SFF-8431 and SFF-8432; the DDM surface follows SFF-8472. Any host that reads the optical-ID bytes at insertion sees the expected Hisense vendor and part-number strings.

On FEC, 25G FEC mode is configured at the MAC layer on each link partner and the optical path is FEC-agnostic. RS-FEC per IEEE 802.3by Clause 108 is the standard mode for 25GBASE-SR; verify FEC configuration against the specific switch platform documentation. DOM registers for transmit power, receive power, supply voltage, laser bias current and module case temperature are accessible through standard SFF-8472 reads on any EEPROM-aware link partner. The module is hot-swappable and RoHS compliant per the original Hisense specification.

Backed by 15+ years of EdgeOptic compatibility engineering across vendor optical platforms. Ships next business day from EU stock with a lifetime warranty. For Hisense-specific EEPROM vendor and part-number strings, pre-deployment verification on a specific host platform, or confirmation of the ordering-code mapping between LTF8505-BC1, LTF8505-BC+ and the Intel-coded LTF8505-BC-IN for a given BOM, contact our sales team.