Generic Compatible 25G LR SFP28 1310nm 20km DOM Duplex LC SMF Optical Transceiver Module

SFP28-25-13-20(LR)-LCD

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SPECIFICATIONS
Product ModelSFP28-25-13-20(LR)-LCDManufacturer BrandPHILISUN
Package TypeSFP28Optical ConnectorDuplex LC
Max Data Rate25.78GChannel Data Rate10.31Gbps
Effective Transmission Distance20km
Wavelength1310nmOperating Voltage3.3V
Fiber TypeSMFCore Size9/125µm
Transmitter TypeDFB-LDReceiver TypeCDR
TX Power-7~2dbmReceiver Sensitivity＜9.5dBm
Digital Diagnostic Monitoring(DDM)YESReceiver Overload2dBm
Power Consumption<1.2W(Standard)
<1.5W(Industrial)		ProtocolsSFF-8402
Operating Temperature(Commercial)0℃~+70℃Storage Temperature(Commercial)-40℃~+85℃
Operating Temperature(Industrial)-40℃~+85℃Storage Temperature(Industrial)-40℃~+85℃

 

PRODUCT PRESENTATION
The PHILISUN SFP28 25G 1310nm 20km LR LC DX transceiver is a high-performance solution for duplex optical data communications, supporting data rates of 25.78Gbps. It features an SFP+ 20-pin connector for hot-pluggable capability and provides digital diagnostic monitoring through an I2C interface. The module includes built-in dual clock and data recovery (CDR) for enhanced signal integrity.Designed for single-mode fiber, this transceiver operates at a nominal wavelength of 1310nm. The transmitter section integrates a high-performance 1310nm DFB laser, compliant with Class 1 laser safety standards (IEC 60825). The receiver section is equipped with an InGaAs detector pre-amplifier (IDP) housed in an optical header, paired with a limiting post-amplifier IC for reliable and efficient performance.

 

TRANSCEIVER SERIES PRODUCTS

 

PRODUCTION & TESTING EQUIPMENT

 

PERFORMANCE PARAMETER
Absolute Maximum Ratings
Parameter Symbol Unit Min. Max.
Storage temperature range Ts °C -45 85
Relative humidity RH % 0 95
Input voltage Vcc V 0 4

 

Recommended Operating Conditions
Parameter Symbol Unit Min. Typ. Max.
Operating case temperature range Tc ℃ -45 – 85
Supply voltage Vcc V 3.135 3.3 3.465
Bit rate BR Gb/s – 25.78125 –
Max supported link length L km – – 20

 

Electrical Characteristics
Parameter Symbol Unit Min. Typ. Max. Note
Power dissipation – W – – 1.2 –
Transmitter
Input differential impedance RIN Ω – 100 – –
Single ended data input swing VIN mVp-p 90 – 450 –
Tx_disable input voltage – low VIL V -0.3 – 0.8 –
Tx_disable input voltage – high VIH V 2.0 – Vcc+0.3 –
Tx_fault output voltage – low VOL V -0.3 – 0.8 –
Tx_fault output voltage – high VOH V 2.0 – Vcc+0.3 –
Receiver
Output impedance (Differential) Zout V – 100 – –
Rx_LOS output voltage- low VOL V -0.3 – 0.8 –
Rx_LOS output voltage- high VOH V 0.2 – Vcc+0.3 –

 

Optical Transmitter/Receiver Characteristics
Parameter Symbol Unit Min. Typ. Max. Note
Transmitter
Center wavelength λ nm 1295 1310 1325 –
Data rate B Gb/s – 25.78 – –
Output Spectral Width λ(-20dB) nm – – 1 –
Optical output power Po dBm -7 – 2 –
Extinction ratio ER dB 3.5 – – –
Transmitterand dispersion penalty TDP dB – – 3.2 –
Receiver
Operating Wavelength λ nm 1260 – 1355 –
Overload – dBm 2 – – –
Receiver sensitivity (OMA) POMA dBm – – -11.3 –
Optical return loss ORL dB – – -26 –
Signal detect threshold-de-assert SD dBm – – -14 –
LOS hysteresis – dB 0.5 – – –

 

PIN CONFIGURATION

 

TRANSCEIVER PIN DESCRIPTIONS
Pin No. Symbol Logic Description
1,20 VEET – Transmitter ground(common with receiver ground)
2 TX fault LVTTL output Transmitter fault. low normal operation, high fault indication
3 TX disable LVTTL input Transmitter disable. laser output disabled on high or open
4 SDA LVTTL input/output Module definition 2.data line for serial ID
5 SCL LVTTL input/output Module definition 1.clock line for serial ID
6 MOD-ABS – Module definition 0.grounded within the module
7 RS0 LVTTL input Rate select 0, optionally controls SFP28 module receiver. LVTTL logic.
8 LOS LVTTL output Loss of signal indication. Logic 0 indicates normal operation.
9 RS1 LVTTL input Rate select 1, optionally controls SFP28 module transmitter. LVTTL logic.
10,11,14 VEER – Receiver ground(common with transmitter ground)
12 RD- CML output Receiver inverted DATA out.AC coupled
13 RD+ CML output Receiver non-inverted DATA out.AC coupled
15 VCCR – Receiver power supply
16 VCCT – Transmitter power supply
18 TD+ CML input
Transmitter non-inverted DATA in.AC coupled
19 TD- CML input Transmitter inverted DATA in.AC coupled

 

PRODUCT CERTIFICATION

 

QUALITY ADVANTAGE

 

COMPATIBLE BRANDS
CONFIGURATION INFORMATION
光模块产品详情订购信息---SFP28

 

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