1.25Gbps SFP Optical Transceiver, 550m Reach (PN: SP-851G-SX(D)x)
● Data-rate of 1.25Gbps operation
● 850nm VCSEL laser and PIN photo detector
● Compliant with SFP MSA and SFF-8472 with duplex LC receptacle
● Digital Diagnostic Monitoring:
Internal Calibration or External Calibration
● 550m transmission with 50/125µm MMF
● 300m transmission with 62.5/125µm MMF
● Compatible with RoHS
● +3.3V single power supply
● Operating case temperature:
Standard: 0 to +70°C
Extended: -20 to +85°C
Industrial: -40 to +85°C
● Gigabit Ethernet
● Fiber Channel
● Switch to Switch interface
● Switched backplane applications
● Router/Server interface
● Other optical transmission systems
The SFP transceivers are high performance, cost effective modules supporting data-rate of 1.25Gbps and 550m transmission distance with MMF.
Absolute Maximum Ratings
Table 1 - Absolute Maximum Ratings
Recommended Operating Conditions
Table 2 - Recommended Operating Conditions
Operating Case Temperature
Power Supply Voltage
Power Supply Current
Optical and Electrical Characteristics
PN: SP-851G-SX(D)x: (VCSEL and PIN, 500m Reach)
Table 3 - Optical and Electrical Characteristics
Spectral Width (RMS)
Average Output Power
Optical Rise/Fall Time (20%~80%)
Data Input Swing Differential
Input Differential Impedance
Data Output Swing Differential
1. The optical power is launched into MMF.
2. PECL input, internally AC-coupled and terminated.
3. Measured with a PRBS 27-1 test pattern @1250Mbps, BER ≤1×10-12.
4. Internally AC-coupled.
The transceiver consists of three sections: a VCSEL laser transmitter, a PIN photodiode integrated with a trans-impedance preamplifier (TIA) and MCU control unit. All modules satisfy class I laser safety requirements.
The transceivers are compatible with SFP Multi-Source Agreement (MSA) and SFF-8472. For further information, please refer to SFP MSA.
Ordering information for SFP SX
850nm, 1.25Gbps, 550m, 0ºC ~ +70ºC
850nm, 1.25Gbps, 550m, 0ºC ~ +70ºC, With Digital Diagnostic Monitoring
850nm, 1.25Gbps, 550m, -20ºC ~ +85ºC
850nm, 1.25Gbps, 550m, -20ºC ~ +85ºC, With Digital Diagnostic Monitoring
850nm, 1.25Gbps, 550m, -40ºC ~ +85ºC
850nm, 1.25Gbps, 550m, -40ºC ~ +85ºC, With Digital Diagnostic Monitoring
Regular part number/name
1. Neutral Package 10 or 20 pcs/Plastic Tray.
2. According to Customer's request.
WE SHIP BY TNT, DHL, FedEx, UPS.
1. OEM & ODM
OEM and ODM is acceptable. We can customize label, logo, PN and SN for customers, as well as EEPROM.
We provide 3 years warranty for all our fiber optical devices.
Usually we have enough inventory for hot selling products, so regular order can be delivered on the same day.
We Supply 100% compatible transceivers. All of our products are fully compatible with brands like Cisco, Brocade, Huawei, Alcatel-Lucent, Juniper,HP etc.
---Our products are 100% compatible with brands as following and more~~
1. About Us
SKY OPTICS(Sky Optics), a national new high-tech enterprise, founded in 2010, focus on optical communication components, integrating products development, manufacturing, marketing sales and technology service, to supply high-quality products for telecom operators, broadband operators, SI (system integration) operators and all customers in optical communication business.
Our products cover from optical transceiver modules, DC (data center) products and optical passive devices to NIC Card:
Active transceiver product line: all series modules (155M~40G), including GBIC, SFP, SFP+, XFP, X2, XENPAK & QSFP.
DC product line: 10G~40G copper & optical cable, including SFP+ & QSFP+
Optical passive product line: CWDM/DWDM MUX/DEMUX, Adapter, Attenuator, Fiber Jumper
NIC card: 1G~40G NIC card
In the future, Sky Optics will persevere with objectives: developing leading technologies, manufacturing first-rate products, casting excellent quality, and offering satisfactory service, continue to supply the best system solutions, high-quality products and high-efficiency service, to enhance the core competitiveness and create the maximum worth for customers.
All Sky Optics’s products have passed RoHS, CE, FCC certificates.
1. Do you have any MOQ?
Re: No. we completely understand customer will need sample for test, so we don’t set MOQ.
2. How can I pay you, can I use paypal?
Re: We only accept bank transfer.
3. What is your warranty?
Re: We provide 3 years warranty for all our products.
4. Can I use your product in Cisco or Alcatel-Lucent equipment?
Re: Yes, our products are fully compatible with Cisco, HP, Alcatel-Lucent, Nortel, Extreme etc.
5. How about your lead time?
Re: Usually we have enough inventory for hot selling products, so regular order can be delivered on the same day.
6. Can you make my logo on the label?
Re: Yes, we can make your logo on your label as long as your company sent an official letter of authorization.