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                  25G SFP28 CWDM 20km Transceiver SFP Module 1270nm 1370nm For CISCO HP Huawei

                  Categories Optical Transceiver Module
                  Brand Name: Takfly
                  Model Number: TKSFP25GCW20
                  Certification: CE,ROHS,FCC,REACH,ISO9001,ISO14001
                  Place of Origin: China
                  MOQ: 1 piece
                  Payment Terms: T/T, Western Union, MoneyGram, Paypal, L/C
                  Delivery Time: 3-5 working days
                  Packaging Details: blister box + spone + carton
                  Price: USD 60 ~ USD 100
                  Supply Ability: 30000pcs/month
                  Speed: 25G Base
                  Transmission Distance: 20KM
                  Wavelength: 1270~1370nm
                  Compatible Switch Brand: CISCO/HP/Huawei/H3C/Juniper/ZTE/........
                  Grade: Commercial Grade/Industrial Grade
                  Fiber type: Singemode
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                  • Product Details
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                  25G SFP28 CWDM 20km Transceiver SFP Module 1270nm 1370nm For CISCO HP Huawei

                  25G SFP28 CWDM 20km Optica Transceiver SFP Module 1270~1370nm compatible with CISCO HP Huawei H3C Juniper ZTE

                  Optical Transceive Module Description

                  25G SFP28 transceiver module is designed to transmit and receive optical data over single mode optical fiber for link length 10km/20km. The SFP28 LR module electrical interface is compliant to SFI electrical specifications. The transmitter input and receiver output impedance is 100 Ohms differential. Data lines are internally AC coupled. The module provides differential termination and reduce differential to common mode conversion for quality signal termination and low EMI. SFI typically operates over 200 mm of improved FR4 material or up to about 150mmof standard FR4 with one connector.

                  Optical Transceive Module Product Features

                  • Supports 25GBASE(25Gb/s);
                  • Lane bit rate 25.78 Gb/s;
                  • Up to 20km transmission on SMF;
                  • DFB laser and PIN receiver for 6 CWDM waves(1270nm-1370nm);
                  • High speed I/O electrical interface (25GAUI);
                  • I2C interface with integrated Digital Diagnostic monitoring;
                  • SFP28 MSA package with duplex LC connector;
                  • Single +3.3V power supply;Maximum power consumption 1.2 W;
                  • Operating case temperature: Refer to Order info.
                  • Compliant to IEEE 802.3cc Draft3.0, SFF-8402 and SFF-8432;

                  Optical Transceive Module Applications

                  • 25GBase-CWDM

                  1. Absolute Maximum Ratings

                  Storage TemperatureTS-40-+85
                  Supply VoltageVCC-0.5-+4.0
                  Operating Relative HumidityRH--+85

                  2. Recommended Operating Conditions

                  Operating Case Temperature TKSFP25GCW20TC-5-+70°C
                  Operating Case Temperature TKSFP25GCW20ITC-40-+85°C
                  Power Supply VoltageVCC3.133.33.47V
                  Power Supply CurrentICC--0.35A
                  Maximum Power DissipationPD--1.2W
                  Lane Bit RateBRLANE24.325.7826.5Gb/s
                  Transmission DistanceTD-20km

                  3. Optical Characteristics

                  Center Wavelengthλ01XX0-61XX01XX0+6nm
                  Average Launch PowerPTX_LANE-3-2dBm1,2
                  Spectral Width (-20dB)σ--1dBm3
                  Optical Modulation AmplitudeOMA-4-2.2dBm4
                  Launch power in OMA minus TDP (min)OMA_TDP-5--dBm
                  Difference in launch power between lanesPTX_DELTA_LANE--3.6dB
                  Average Output Power (Laser Turn off)Pout-OFF---30dBm
                  Side Mode Suppression RatioSMSR30--dB
                  Extinction Ratio, 100GEER3.5--dB
                  Transmitter and dispersion penalty (TDP)TDP--2.7dB
                  Optical Return Loss ToleranceORLT--20dB
                  Optical Eye MaskCompliant with IEEE 802.3cc Draft 3.0
                  Center Wavelengthλ012601380nm
                  Receiver sensitivity (OMA)---12.3dBm5
                  Stress sensitivity (OMA)---9.8dBm6
                  Receiver OverloadPIN-OL3--dBm
                  LOS Assert per laneLOSA-30--dBm
                  LOS De-assertLOSD---17dBm
                  LOS HysteresisLOSH0.5-4dB


                  1. Class 1 Laser Safety per FDA/CDRH and EN (IEC) 60825 regulations.

                  2. High Bandwidth Mode. Class 1 Laser Safety per FDA/CDRH and EN (IEC) 60825 regulations.

                  3. 20dB spectral width.

                  4. Equivalent extinction ratio specification for Fibre Channel. Allows smaller ER at higher average power.

                  5. At 5E-5 BER, KR4 FEC

                  6. Per IEEE802.3cc

                  4. Electrical Characteristics

                  Transmitter (Module Input)
                  Differential Data Input AmplitudeVIN,P-P90-800mVpp
                  Differential Termination Mismatch--5%


                  Normal OperationVIL-0.3-0.8V
                  Laser DisableVIH2.0-VCC+0.3V
                  Receiver (Module Output)
                  Differential Data Output AmplitudeVOUT,P-P185-425mVpp
                  Differential Termination Mismatch(1MHZ)--5%
                  Output Rise/Fall Time, 20%~80%TR12--ps


                  Normal OperationVOL--0.2V
                  Lose SignalVOHVCC-0.2--V

                  5. Pin Descriptions

                  1VEETTransmitter Ground (Common with Receiver Ground)7.1
                  2TFAULTTransmitter Fault. Not supported.
                  3TDISTransmitter Disable. Laser output disabled on high or open.7.2
                  4MOD_DEF(2)Module Definition 2. Data line for Serial ID.7.3
                  5MOD_DEF(1)Module Definition 1. Clock line for Serial ID.7.3
                  6MOD_DEF(0)Module Definition 0. Grounded within the module.7.3
                  7RS0Rate Select0, optionally controls SFP+ module receiver. When high input signaling rate>4.25 GBd and when low input signaling rate<4.25GBd
                  8LOSLoss of Signal indication. Logic 0 indicates normal operation.7.4
                  9RS1Rate Select1, optionally controls SFP+ module receiver. When high input signaling rate>4.25 GBd and when low input signaling rate<4.25GBd
                  10VEERReceiver Ground (Common with Transmitter Ground)7.1
                  11VEERReceiver Ground (Common with Transmitter Ground)7.1
                  12RD-Receiver Inverted DATA out. AC Coupled.
                  13RD+Receiver Non-inverted DATA out. AC Coupled.
                  14VEERReceiver Ground (Common with Transmitter Ground)7.1
                  15VCCRReceiver Power Supply
                  16VCCTTransmitter Power Supply
                  17VEETTransmitter Ground (Common with Receiver Ground)7.1
                  18TD+Transmitter Non-Inverted DATA in. AC Coupled.
                  19TD-Transmitter Inverted DATA in. AC Coupled.
                  20VEETTransmitter Ground (Common with Receiver Ground)7.1


                  7.1 Circuit ground is internally isolated from chassis ground.

                  7.2 Laser output disabled on TDIS >2.0V or open, enabled on TDIS <0.8V.

                  7.3 Should be pulled up with 4.7k - 10kohms on host board to a voltage between 2.0V and 3.6V. MOD_DEF(0) pulls line low to indicate module is plugged in.

                  7.4 LOS is open collector output. Should be pulled up with 4.7k -10kohms on host board to a voltage between 2.0V and 3.6V. Logic 0 indicates normal operation; logic 1 indicates loss of signal.

                  6. EEPROM & DDM THRESHOLD

                  6.1 EEPROM

                  2 wire address 1010000X (A0h)


                  Serial ID Defined by SFP MSA (96 bytes)


                  Vendor Speific (32 bytes)


                  Reserved (128 bytes)

                  6.2 DDM THRESHOLD

                  Low AlarmLow WarnHigh WarnHigh Alarm
                  Temperature TKSFP25GCW20-10℃-5℃75℃80℃
                  Temperature TKSFP25GCW20I-45℃-40℃80℃85℃
                  Tx Bias10mA20mA80mA100mA
                  Tx Power-4dBm-3dBm2.5dBm3dBm
                  Rx Power-14.4dBm-12.4dBm2dBm2.5dBm

                  Ordering Information

                  Part No.

                  Data Rate


                  Fiber Type


                  Optical Interface



                  TKSFP25GGLR25.78GbpsCWDM DFBSMF20KMLC-5~70 °CY
                  TKSFP25GGLRI25.78GbpsCWDM DFBSMF20KMLC-40~85 °CY

                  CWDM WAVE=1270nm, 1290nm, 1310nm, 1330nm, 1350nm, 1370nm.

                  Quality 25G SFP28 CWDM 20km Transceiver SFP Module 1270nm 1370nm For CISCO HP Huawei for sale
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