Intel LTF8505-BC-IN / E25GSFP28SR 25G SFP28 SR Multimode Optical Transceiver
The Intel LTF8505-BC-IN (retail SKU E25GSFP28SR) is a 25GBASE-SR SFP28 short-reach optical transceiver for data center and enterprise Ethernet links over multimode fiber. It suits buyers interconnecting 25G top-of-rack switches with servers equipped on Intel XXV710 or E810 adapters, and its backward 10GbE support makes it useful in mixed-speed fabrics. Note that the 70 m / 100 m reach figures apply only on OM3/OM4/OM5-grade multimode cabling—verify your fiber plant before ordering.
Key specifications (table)
| Parameter | Specification |
|---|---|
| Product Model | Intel LTF8505-BC-IN |
| Retail SKU | E25GSFP28SR |
| Module Type | 25GBASE-SR SFP28 Optical Transceiver |
| Form Factor | SFP28 Hot-Pluggable |
| Transmission Rate | 25.78 Gbps |
| Backward Compatibility | Supports 10GbE (useful for phased migrations) |
| Fiber Type | Multimode Fiber (MMF) |
| Supported Fiber Standards | OM3 / OM4 / OM5 |
| Operating Wavelength | 850 nm |
| Connector Type | Duplex LC |
| Maximum Transmission Distance | 70 m on OM3 / 100 m on OM4 & OM5 |
| Laser Type | VCSEL |
| Receiver Type | PIN Photodiode |
| Digital Diagnostics | DDM / DOM Supported |
| FEC Support | Host RS-FEC Supported (availability depends on host platform) |
| Operating Temperature | 0°C to 70°C |
| Storage Temperature | -40°C to 85°C |
| Operating Voltage | 3.3 V |
| Power Consumption | ≤ 0.3 W |
| Compliance Standards | IEEE 802.3by, SFP28 MSA, SFF-8431, SFF-8432, SFF-8472 |
| Optical Interface | LC Duplex |
| Transmission Medium | Multimode Optical Fiber |
| Application Scenarios | Data Centers, Cloud Networking, Enterprise Ethernet |
| Compatible Platforms | Intel XXV710 / E810 Adapters and 25G Switches |
Good to know
- Although compliant with the SFP28 MSA, some switch vendors validate only firmware-coded transceivers—confirm MSA/DOM acceptance on your switch platform before deployment at scale.
- Within Intel’s optical family, this is the short-reach SR variant: lowest power (≤ 0.3 W) and cost, but reach capped at 100 m on OM4/OM5, unlike longer-reach LR-class single-mode options.
- Buying tip: match OM3, OM4, or OM5 patch cabling to the reach you actually need—70 m over OM3 is typically sufficient for in-rack and adjacent-rack links in ToR topologies.
For tray and reel pricing, current stock by part number and date code, and volume discounts on bulk orders, request a bulk quotation.
The Intel LTF8505-BC-IN (retail SKU E25GSFP28SR) is a 25GBASE-SR SFP28 short-reach optical transceiver for data center and enterprise Ethernet links over multimode fiber. It suits buyers interconnecting 25G top-of-rack switches with servers equipped on Intel XXV710 or E810 adapters, and its backward 10GbE support makes it useful in mixed-speed fabrics. Note that the 70 m / 100 m reach figures apply only on OM3/OM4/OM5-grade multimode cabling—verify your fiber plant before ordering.
Key specifications (table)
| Parameter | Specification |
|---|---|
| Product Model | Intel LTF8505-BC-IN |
| Retail SKU | E25GSFP28SR |
| Module Type | 25GBASE-SR SFP28 Optical Transceiver |
| Form Factor | SFP28 Hot-Pluggable |
| Transmission Rate | 25.78 Gbps |
| Backward Compatibility | Supports 10GbE (useful for phased migrations) |
| Fiber Type | Multimode Fiber (MMF) |
| Supported Fiber Standards | OM3 / OM4 / OM5 |
| Operating Wavelength | 850 nm |
| Connector Type | Duplex LC |
| Maximum Transmission Distance | 70 m on OM3 / 100 m on OM4 & OM5 |
| Laser Type | VCSEL |
| Receiver Type | PIN Photodiode |
| Digital Diagnostics | DDM / DOM Supported |
| FEC Support | Host RS-FEC Supported (availability depends on host platform) |
| Operating Temperature | 0°C to 70°C |
| Storage Temperature | -40°C to 85°C |
| Operating Voltage | 3.3 V |
| Power Consumption | ≤ 0.3 W |
| Compliance Standards | IEEE 802.3by, SFP28 MSA, SFF-8431, SFF-8432, SFF-8472 |
| Optical Interface | LC Duplex |
| Transmission Medium | Multimode Optical Fiber |
| Application Scenarios | Data Centers, Cloud Networking, Enterprise Ethernet |
| Compatible Platforms | Intel XXV710 / E810 Adapters and 25G Switches |
Good to know
- Although compliant with the SFP28 MSA, some switch vendors validate only firmware-coded transceivers—confirm MSA/DOM acceptance on your switch platform before deployment at scale.
- Within Intel’s optical family, this is the short-reach SR variant: lowest power (≤ 0.3 W) and cost, but reach capped at 100 m on OM4/OM5, unlike longer-reach LR-class single-mode options.
- Buying tip: match OM3, OM4, or OM5 patch cabling to the reach you actually need—70 m over OM3 is typically sufficient for in-rack and adjacent-rack links in ToR topologies.
For tray and reel pricing, current stock by part number and date code, and volume discounts on bulk orders, request a bulk quotation.
