25G SFP28 Transceiver Module LR SMF 1310nm, 2km, LC duplex Interface, FR, Dell, Aruba, Cisco Compatible

Description

Features of 25G SFP28 Transceiver Module LR

• Supports 24.3Gbps to 28.1Gbps bit rates
• 1310nm DFB Laser and PIN photo-detector
• Up to 2kmon 9/125µm SMF
• Duplex LC receptacle optical interface compliant
• Hot pluggable
• All-metal housing for superior EMI performance
• RoHS6 compliant (lead free)
• Operating case temperature: Commercial: -5ºC to +70°C; Extended: -20ºC to +80°C; Industrial: -40ºC to +85°C

 

Applications

• Data center: Interconnection among servers, switches, and routers (spine-leaf architecture);
• 5G network: 5G front-haul (Fronthaul) scenario, meeting the medium-distance connection requirements between base stations.

 

Standards

• Compliant with INF-8431
• Compliant with SFF-8472
• Compatible with IEEE802.3cc

 

25G SFP28 Transceiver Module LR Optical Parameters

Parameter	Symbol	Min.	Typical	Max.	Unit	Note
Transmitter Section
Centre Wavelength	λc	1295	1310	1325	nm
Spectral Width(-20dB)	Δλ			1	nm
Side Mode Suppression Ratio	SMSR	30			dB
Average Optical Power (avg.)	Pout	-5		+2.0	dBm	1
Laser Off Power	Poff	–	–	-30	dBm
Extinction Ratio	ER	3	–	–	dB	2
Relative Intensity Noise	RIN	–	–	-130	dB/Hz
Transmitter and Dispersion Penalty	TDP		–	2.7	dB
Optical Return Loss Tolerance		–	–	26	dB
Output Optical Eye	Compliant with IEEE802.3cc eye masks when filtered					2
Receiver Section
Receiver Center Wavelength	λc	1260	1310	1355	nm
Receiver in Average Power		-11.4		2	dBm
Receiver sensitivity(OMA)	Sen			-12	dBm	3
Los Assert	LOSA	-26	–	–	dBm
Los Dessert	LOSD	–	–	-17	dBm
Los Hysteresis	LOSH	0.5	–	5	dB
Overload	Pin-max	–	–	2	dBm	3
Receiver Reflectance		–	–	-26	dB
Receiver Power (damage)		–	–	3	dBm

 Notes:

1. The optical power is launched into 9/125µm SMF.
2. Measured with a PRBS 2³¹-1test pattern @25.78Gbps.
3. 3. Measured with a PRBS 2³¹-1test pattern @78Gbps, ER=4dB, BER <10^-6.

 

Timing Characteristics

Parameter	Symbol	Min.	Typical	Max.	Unit
TX_Disable Assert Time	t_off			100	us
TX_Disable Negate Time	t_on			2	ms
Time to Initialize	t_start_up			300	ms
Tx_Fault Assert	t_fault_on			1	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
Clock Frequency	fSCL	0		400	kHz

 

Ordering information

Part Number	Product Description
SFP28-25G-LR02	1310nm, 25Gbps, 2km, Duplex LC SFP28 Transceiver, -5ºC ~ +70ºC, With DDM.
SFP28-25G-LR02E	1310nm, 25Gbps, 2km, Duplex LC SFP28 Transceiver, -20ºC ~ +80ºC, With DDM.
SFP28-25G-LR02T	1310nm, 25Gbps, 2km, Duplex LC SFP28 Transceiver, -40ºC ~ +85ºC, With DDM.