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SFP28 25G 1310nm 30km ER LC DX Transceiver
25Gbps SFP28 Transceiver
Model:JFTSM-SFP28-25-13-30(ER)-LCD
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Product Specification
Data Sheets

Product model
JFTSM-SFP28-25-13-30(ER)-LCD
Manufacturer brand
JFOPT
Package type
SFP28
Optical connector
Duplex LC
Max data rate
25.78G
Channel data rate
10.31Gbps
Effective transmission distance
30km
Wavelength
1310nm
Operating voltage
3.3V
Fiber type
SMF
Core size
9/125
Transmitter type
DML
Receiver type
APD
TX power
-0.5~6.5dBm
Receiver sensitivity
<19.5dBm
Digital diagnostic monitoring(DDM)
YES
Receiver overload
-5dBm
Power consumption
≤2W
Protocols
SFF-8472, SFF-8432, SFF-8431
Operating temperature(Commercial)
0℃~+70℃
Storage temperature(Commercial)
-40℃~+85℃





PRODUCTION LINE INTRODUCTION
 
 

JFOPT continues to invest in optical transceiver production, covering a full range of optical transceiver such as 1*9, SFP, 10G, 25G, 100G, 200G, 400G, 800G GPON/EPON/XG/XGSPON OLT transceiver. At the same time, our company provides TOSA, ROSA, BOSA semi-finished device solutions for the downstream peer. JFOPT's production line has a daily production capacity of 10,000 optical transceivers and 20,000 optical devices. In addition, JFOPT's optical transceiver have industry-leading high temperature resistance and anti-interference capability, and are widely used in computing centers, operators, traffic security, power facilities and other industries.





PRODUCT PRESENTATION
 
 

The JFOPT SFP28 25G 1310nm 30km ER LC DX transceiver is specifically designed for Ethernet links, supporting data rates of up to 25.78 Gb/s and a transmission distance of up to 30km without FEC. It adheres to SFF-8472 standards and is compatible with SFF-8432 and relevant sections of SFF-8431. Additionally, the product is RoHS-compliant and lead-free in accordance with Directive 2011/96/EU.





TRANSCEIVER SERIES PRODUCTS
 
 





PRODUCTION & TESTING EQUIPMENT
 
 





FEATURES
 
 
UP to 25.78Gb/s data links Hot-pluggable SFP28 footprint
Duplex LC connector DML laser transmitter, APD photo detector
Up to 30km on SMF without FEC Single 3.3V power supply
Operating case temperature range: 0~ 70°C 2-wire interface for management specifications compliant with SFF 8472 digital diagnostic monitoring interface for optical transceivers




APPLICATION
 
 
High-speed storage area networks CPRI 10




STANDARD COMPLIANCE
 
 






ABSOLUTE MAXIMUM RATINGS
 
 
Parameter Symbol Min. Typ. Max. Unit
Storage temperature TS -40  - 85 °C
Case operating temperature TA - 70 °C
Maximum supply voltage Vcc - 3.6 V
Relative humidity RH - 85 %





ELECTRICALCTRICAL CHARACTERISTICS
 
 
Parameter Symbol Min. Typ. Max. Unit Note
Supply voltage VCC 3.15  - 3.46 V -
Supply current Icc - - 450  mA -
Power consumption P - - 1.5 W -
Data rate R - 25.8 - Gb/s -

Transmitter
 
Input differential impedance Rin - 100 - Ω 1
Differential input voltage swing Vin,pp 180 - 700 mV 2
Transmit disable voltage VD 2 - Vcc V 3
Transmit enable voltage VEN Vee - Vee+0.8 V -

Receiver
 
Single ended output voltage
tolerance
V -0.3 - 4 V -
Rx output diff voltage Vo 185 - 800 mV -
LOS fault VLOS fault 2 - VccHOST V 4
LOS normal VLOS norm Vee - Vee+0.8 V 4
Notes:
1.Connected directly to TX data input pins. AC coupling from pins into laser driver IC.
2.Per SFF-8431 Rev 3.0
3.Into 100 ohms differential termination.
4.LOS is an open collector output. Should be pulled up with 4.7k – 10kΩ on the host board. Normal operation is logic 0; loss of signal is logic 1. Maximum pull-up voltage is 5.5V.





OPTICAL CHARACTERISTICS
 
 
Parameter Symbol Min. Typ. Max Unit Notes

Transmitter
 
Center wavelength λt 1295 - 1325 nm -
Spectral width △λ - - 1 nm -
Average optical power Pavg 0 - +6  dBm 1
Laser off power Poff - - -30 dBm -
Side mode suppression ratio - 30 - - - -
Extinction ratio ER 4 - - dB -
Optical return loss tolerance - - - -12 dB -

Receiver
 
Center wavelength λr 1260 - 1370 nm -
Receiver sensitivity Sen - - -19 dBm 2
Los assert LOSA -30 - - dBm -
Los dessert LOSD - - -19 dBm -
Los hysteresis LOSH 0.5 - - dB -
Overload - -6  - - dBm -

Notes:
1.Average power figures are informative only, per IEEE802.3CC.
2.Receiver sensitivity is informative. Shall be measured with conformance test signal for . BER =5x 10-5.
 





TIMING CHARACTERISTICS
 
 
Parameter Symbol Min. Typ. Max. Unit
TX_disable assert time t_off - - 100 us
TX_disable negate time t_on - - 2 ms
Time to initialize 2-wire interface t_2w_start_up - - 300 ms
Time to initialize t_start_up - - 300 ms
Time to initialize cooled module and time to  power up a cooled module to power level II t_start_up_cooled - - 90 s
Time to power up to level II t_power_level2 - - 300 ms
Time to power down from level II t_power_down - - 300 ms
Tx_fault assert Tx_Fault_on - - 1 ms
Tx_fault assert for cooled module Tx_Fault_on_cooled - - 50 ms
TX_FAULT reset t_reset 10 - - us
Rx_LOS assert delay t_los_on - - 100 us
Rx_LOS negate delay t_los_off - - 100 us





DIGITAL DIAGNOSTIC SPECIFICATIONS
 
 
Parameter Symbol Min. Max. Accuracy Unit
Transceiver temperature T 0 +70  ±3.0°C °C
Transceiver supply voltage DDVoltage 3.15 3.45 ±3% V
Transmitter bias current DDBias 0 35 ±10% mA
Transmitter output power DDTx-Power -5 +5  ±2dB dBm
Receiver average optical input power DDRx-Power -16 -3 ±2dB dBm



 

PIN DESCRIPTION
 
 
Pin Symbol Name/Description Plug Seq.
VeeT Module transmitter ground
TX fault Module transmitter fault
TX disable Transmitter disable; turns off transmitter laser output
SDL 2 wire serial interface data input/output (SDA)
SCL 2 wire serial interface clock input (SCL)
MOD_ABS Module absent, connect to VeeR or VeeT in the module
RS0 Rate select0: module inputs and are pulled low to VeeT with >30 kΩ resistorsin the module. -
LOS Receiver Loss of signal indication -
RS1 Rate select1: module inputs and are pulled low to VeeT with >30 kΩ resistorsin the module. -
10  VeeR Module receiver ground
11  VeeR Module receiver ground
12  RD- Receiver inverted data out put -
13  RD+ Receiver non-inverted data out put -
14  VeeR Module receiver ground
15  VccR Module receiver 3.3V supply -
16  VccT Module transmitter 3.3V supply -
17  VeeT Module transmitter ground
18  TD+ Transmitter non-inverted data out put -
19  TD- Transmitter inverted data out put -
20  VeeT Module transmitter ground
Notes:
1.The module ground pins shall be isolated from the module case.
2.This pin is an open collector/drain output pin and shall be pulled up with 4.7K-10Kohms to Host_Vcc on the host board.
3.This pin shall be pulled up with 4.7K-10Kohms to VccT in the module.
4.This pin is an open collector/drain output pin and shall be pulled up with 4.7K-10Kohms to Host_Vcc on the host board.






PRODUCT PACKAGING
 
 




PRODUCT CERTIFICATION
 
 





QUALITY ADVANTAGE
 
 





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