25G SFP28 MMF is a transceiver module that supports a 25 Gigabits per second (Gbps) data rate over multi-mode fiber (MMF) using a specific SFP28 form factor. It is designed for high-speed connections, primarily for data centers, providing 25G Ethernet connectivity and serving as a building block for 100G networks.
This SFP-25G-SR compatible transceiver provides 25GBase-SR throughput up to 100m over multi-mode fiber (MMF) using a wavelength of 850nm via an LC connector. The 25G SFP28 portfolio offers high-density and low-power 25 Gigabit Ethernet connectivity options for data center and high-performance computing networks.
✓ 25G Ethernet
✓ Data Center & Fiber Channel
✓ SFF-8431 Compliant
✓ SFF-8472 Compliant
✓ RoHS Compliant
Absolute Maximum Ratings
| Storage Temperature |
Ts |
-40 |
- |
85 |
°C |
| Relative Humidity |
RH |
5 |
- |
95 |
% |
| Power Supply Voltage |
VCC |
-0.3 |
- |
4 |
V |
| Signal Input Voltage |
|
Vcc-0.3 |
- |
Vcc+0.3 |
V |
Recommended Operating Conditions
| Case Operating Temperature |
Tcase |
0 |
- |
70 |
°C |
Commercial |
| Power Supply Voltage |
VCC |
3.14 |
3.3 |
3.47 |
V |
|
| Power Supply Current |
ICC |
- |
|
300 |
mA |
|
| Data Rate |
BR |
|
25.78 |
|
Gbps |
|
| Transmission Distance |
TD |
|
- |
100 |
m |
OM4 or 70m OM3 |
| Coupled fiber |
Multi mode fiber |
|
Optical Characteristics
| Output Opt. Pwr |
POUT |
-9.1 |
|
2.4 |
dBm |
1 |
| Optical Wavelength |
λ |
840 |
850 |
860 |
nm |
|
| Spectral Width (RMS) |
σ |
|
|
0.6 |
nm |
|
| Optical Extinction Ratio |
ER |
3.0 |
|
|
dB |
|
| RIN |
RIN |
|
|
-128 |
dB/Hz |
|
| Rx Sensitivity |
RSENS |
|
|
-11 |
dBm |
2 |
| Input Saturation Power (Overload) |
Psat |
2.4 |
|
|
dBm |
|
| Wavelength Range |
λC |
770 |
850 |
860 |
nm |
|
| LOS De-Assert |
LOSD |
|
|
-13 |
dBm |
|
| LOS Assert |
LOSA |
-30 |
|
|
dBm |
|
| LOS Hysteresis |
|
0.5 |
|
|
dB |
|
Electrical Characteristics
| Supply Voltage |
Vcc |
3.14 |
3.3 |
3.46 |
V |
|
| Supply Current |
Icc |
|
|
300 |
mA |
|
| Input differential impedance |
Rin |
|
100 |
|
Ω |
1 |
| Single ended data input swing |
Vin,pp |
180 |
|
700 |
mV |
|
| Transmit Disable Voltage |
VD |
Vcc–1.3 |
|
Vcc |
V |
|
| Transmit Enable Voltage |
VEN |
Vee |
|
Vee+0.8 |
V |
2 |
| Differential data output swing |
Vout,pp |
300 |
|
850 |
mV |
3 |
| LOS Fault |
VLOS fault |
Vcc–1.3 |
|
VccHOST |
V |
4 |
| LOS Normal |
VLOS norm |
Vee |
|
Vee+0.8 |
V |
4 |
Technical Notes:
- Class 1 Laser Safety per FDA/CDRH and IEC-825-1 regulations.
- Measured with a PRBS 2³¹-1 test pattern, @25.78Gb/s, BER < 5×10⁻⁵.
- Connected directly to TX data input pins. AC coupled thereafter.
- Into 100 ohms differential termination.
- Loss Of Signal is LVTTL. Logic 0 indicates normal operation; logic 1 indicates no signal detected.
Frequently Asked Questions
What is the maximum transmission distance for 25G SFP28 MMF?
The module supports a transmission distance of up to 100 meters over OM4 multi-mode fiber or up to 70 meters over OM3 multi-mode fiber.
What is the operating wavelength of this transceiver?
It operates at a nominal wavelength of 850nm, which is standard for short-reach multi-mode fiber applications.
Which connector type does the 25G SFP28 MMF use?
This module is equipped with a standard duplex LC connector for secure and reliable fiber connectivity.
Is the 25G SFP28 module compliant with industry standards?
Yes, it is fully compliant with SFF-8431, SFF-8472, and RoHS standards, ensuring interoperability and environmental safety.
What are the primary applications for this module?
It is primarily designed for high-speed 25G Ethernet connectivity in data centers, high-performance computing networks, and as a building block for 100G network upgrades.
What is the power consumption of these modules?
The 25G SFP28 modules are designed for low power consumption, typically requiring a supply current of no more than 300mA at 3.3V.
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