SFP Overview:
The Small Form Factor Pluggable (SFP) transceivers adhere to the Small Form Factor Pluggable Multi-Sourcing Agreement (MSA). This transceiver comprises five main sections: the LD driver, the limiting amplifier, the digital diagnostic monitor, the FP laser, and the PIN photodetector. These SFP are Capable of data links up to 20km on 9/125µm single mode fiber, it allows for optical output disabling via a TTL logic high-level input of Tx Disable. Additionally, system-level disabling of the module is achievable through I2C. The Tx Fault feature indicates laser degradation, while Loss of Signal (LOS) output indicates loss of input optical signal or link status with a partner. LOS/Disable/Fault information can be accessed via I2C register.
SFP description:
Features for SFP 1.25g:
- Supports data links up to 1.25Gb/s
- Equipped with a 1310nm FP laser transmitter and PIN photodetector
- Supports distances of up to 20km on 9/125µm SMF
- Hot-pluggable SFP footprint for easy installation
- BIDI LC/UPC type pluggable optical interface
- Low power consumption
- Metal enclosure reduces EMI interference
- RoHS compliant and lead-free
- Supports Digital Diagnostic Monitoring interface
- Operates on a single +3.3V power supply
- Compliant with SFF-8472
- Operating temperature ranges:
- Commercial: 0 ~ +70oC
- Extended: -10 ~ +80oC
- Industrial: -40 ~ +85oC
Applications For SFP 1.25G:
- Switch to Switch Interface
- Gigabit Ethernet
- Switched Backplane Applications
- Router/Server Interface
- Other Optical Links
Part Number Ordering Information of SFP 1.25G.
| Part Number |
Data Rate (Gb/s) |
Wavelength (nm) |
Transmission Distance(km) |
Temperature ( oC) (Operating Case) |
| HTSF-B1G3149LC |
1.25 |
1310Tx/1490nmRx |
20km SMF |
0~70 commercial |
| HTSF-B1G3149LE |
1.25 |
1310Tx/1490nmRx |
20km SMF |
-10~80 Extended |
| HTSF-B1G3149LI |
1.25 |
1310Tx/1490nmRx |
20km SMF |
-40~85 Industria |
Absolute Maximum Ratings for our SFP 1.25G
It has to be noted that the operation in excess of any individual absolute maximum ratings might cause permanent damage to this module.
| Parameter |
Symbol |
Min |
Max |
Unit |
Notes |
| Storage Temperature |
TS |
-40 |
85 |
degree C |
|
| Power Supply Voltage |
VCC |
-0.3 |
3.6 |
V |
|
| Relative Humidity (non-condensation) |
RH |
5 |
95 |
% |
|
| Damage Threshold |
THd |
5 |
|
dBm |
|
Recommended Operating Conditions and Power Supply Requirements of SFP 1.25G:
| Parameter |
Symbol |
Min |
Typical |
Max |
Unit |
Notes |
| Operating Case Temperature |
TOP |
0 |
70 |
- |
oC |
commercial |
| |
|
-10 |
80 |
- |
oC |
extended |
| |
|
-40 |
85 |
- |
oC |
industrial |
| Power Supply Voltage |
VCC |
3.135 |
3.3 |
3.465 |
V |
|
| Data Rate |
|
|
1.25 |
|
Gb/s |
|
| Control Input Voltage High |
|
2 |
- |
- |
Vcc |
|
| Control Input Voltage Low |
|
0 |
0.8 |
- |
V |
|
| Link Distance (SMF) |
D |
20 |
- |
- |
km |
9/125um |