Name: 25G SFP28 LR 10km
Brand: T&S Communications Co., Ltd.
Availability: InStock

T&S TSSP-3125G-LR is a single-Channel, Pluggable, Fiber-Optical SFP28 for 25 Gigabit Ethernet Applications. It is a high-performance module for data communication and interconnect applications that operate at 25.78125 Gbps up to 10km. This module is designed to operate over single-mode fiber systems using a nominal wavelength of 1310nm. The electrical interface uses a 20 contact edge type connector. The optical interface uses duplex LC receptacle.

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25G SFP28 LR 10km Specification Download

Features of SFP28 25G LR

Up to 25.78 Gb/s bi-directional data links
Hot-pluggable SFP+ footprint
Built-in digital diagnostic functions
1310nm DFB laser transmitter
Duplex LC connector
RoHS compliant
Up to 10 km on 9/125μm SMF
Metal enclosure, for lower EMI
1.5W maximum power consumption with established link
Single 3.3V power supply
Operating case temperature
Commercial: 0°C to +70 °C
+3.3V single power supply RoHS compliant

Applications of SFP28 25G LR

25GE LR
eCPRI & CPRI

Specifications of SFP28 25G LR

Absolute Maximum Rating

Recommended Operating Environment

Optical Characteristics

Electrical Characteristics

These values represent the damage threshold of the module. Stress in excess of any of the individual Absolute Maximum Ratings can cause immediate catastrophic damage to the module even if all other parameters are within Recommended Operating Conditions.

Parameters	Symbol	Min.	Max.	Unit
Power Supply Voltage	V_CC	0	+3.6	V
Storage Temperature	Tc	-40	+85	°C
Operating Case Temperature	Tc	0	+70	°C
Relative Humidity	RH	5	95	%
RX Input Average Power	Pmax	-	0	dBm

Recommended Operating Environment specifies parameters for which the electrical and optical characteristics hold unless otherwise noted.

Parameter	Symbol	Min.	Typical	Max	Unit
Power Supply Voltage	V_CC	3.135	3.300	3.465	V
Operating Case Temperature	T_C	0	25	70	°C

The following optical characteristics are defined over the Recommended Operating Environment unless otherwise specified.

Parameter	Symbol	Min.	Typical	Max	Unit	Notes
Transmitter
Center Wavelength	λt	1295		1325	nm
Side Mode Suppression Ratio	SMSR	30	-	-	dB
Average Optical Power	Pavg	-7.0	-	2	dBm	2
Launch Power in OMA minus Transmitter and Dispersion Penalty (TDP)		-5			dBm
Extinction Ratio	ER	2.0	-	-	dB	3
Transmitter Dispersion Penalty	TDP	-	-	2.7	dB
Optical Return Loss Tolerance		-	-	12	dB
Eye Mask{X1, X2, X3, Y1, Y2, Y3}		{0.31, 0.4, 0.45, 0.34, 0.38, 0.4}
Receiver
Center Wavelength	λr	1260		1350	nm
Damage Threshold	THd	3.5			dBm
Average Receive Power		-13.3			dBm
Receive Power (OMA)				2.2	dBm
Receiver Sensitivity (OMA)	SEN	-	-	-11.3	dBm	3
Stressed Receiver Sensitivity (OMA)				-8.8	dBm
Vertical Eye Closure Penalty, each Lane			1.9		dB
Stressed Eye J2 Jitter			0.27		UI
Stressed Eye J4 Jitter			0.39		UI
SRS Eye Mask Definition {X1, X2, X3, Y1, Y2, Y3} Hit ratio 5x10-5 per sample		{0.24, 0.5, 0.5, 0.24, 0.24, 0.4}

Note:

Trade-offs are available between spectral width, center wavelength and minimum OMA, as shown in table 6.
The optical power is launched into MMF
Measured with a PRBS 2³¹-1 test pattern @25.78125Gbps;BER=5x10^-5

The following electrical characteristics are defined over the Recommended Operating Environment unless otherwise specified.

Parameter	Symbol	Min.	Typical	Max	Unit	Notes
Data Rate		-	25.78125	-	Gbps
Power Consumption		-	1200	1500	mW
Transmitter
Single Ended Output Voltage Tolerance		-0.3	-	4.0	V
C common mode voltage tolerance		15	-	-	mV
Tx Input Diff Voltage	VI	400		1600	mV
Tx Fault	VoL	-0.3		0.4	V	At 0.7mA
Receiver
Single Ended Output Voltage Tolerance		-0.3	-	4.0	V
Rx Output Diff Voltage	Vo	300		850	mV

Pin Definition of SFP28 25G LR

Pin	Symbol	Name/Description
1	VEET [1]	Transmitter Ground
2	Tx_FAULT [2]	Transmitter Fault
3	Tx_DIS [3]	Transmitter Disable. Laser output disabled on high or open
4	SDA [2]	2-wire Serial Interface Data Line
5	SCL [2]	2-wire Serial Interface Clock Line
6	MOD_ABS [4]	Module Absent. Grounded within the module
7	RS0 [5]	Rate Select 0
8	RX_LOS [2]	Loss of Signal indication. Logic 0 indicates normal operation
9	RS1 [5]	Rate Select 1
10	VEER [1]	Receiver Ground
11	VEER [1]	Receiver Ground
12	RD-	Receiver Inverted DATA out. AC Coupled
13	RD+	Receiver DATA out. AC Coupled
14	VEER [1]	Receiver Ground
15	VCCR	Receiver Power Supply
16	VCCT	Transmitter Power Supply
17	VEET [1]	Transmitter Ground
18	TD+	Transmitter DATA in. AC Coupled
19	TD-	Transmitter Inverted DATA in. AC Coupled
20	VEET [1]	Transmitter Ground

Notes:

Module circuit ground is isolated from module chassis ground within the module.
should be pulled up with 4.7k – 10k ohms on host board to a voltage between 3.15Vand 3.6V.
Tx_Disable is an input contact with a 4.7 kΩ to 10 kΩ pullup to VccT inside the module.
Mod_ABS is connected to VeeT or VeeR in the SFP+ module. The host may pull this contact up to Vcc_Host with a resistor in the range 4.7 kΩ to10 kΩ.Mod_ABS is asserted “High” when the SFP+ module is physically absent from a host slot.
RS0 and RS1 are module inputs and are pulled low to VeeT with > 30 kΩ resistors in the module.

Regulatory Compliance of SFP28 25G LR

T&S SFP+ transceiver is designed to be Class I Laser safety compliant and is certified per the following standards:

Feature	Agency	Standard	Certificate / Comments
Laser Safety	FDA	CDRH 21 CFR 1040 and Laser Notice No. 50	1120292-000
Product Safety	UL	UL and CUL EN60950-2:2007	E347511
Environmental protection	SGS	RoHS Directive 2002/95/EC	GZ1001008918/CHEM
EMC	WALTEK	EN 55022:2006+A1:2007 EN 55024:1998+A1+A2:2003	WT10093759-D-E-E

Important Notice of SFP28 25G LR

Performance figures, data and any illustrative material provided in this data sheet are typical and must be specifically confirmed in writing by T&S before they become applicable to any particular order or contract. In accordance with the T&S policy of continuous improvement specifications may change without notice.

The publication of information in this data sheet does not imply freedom from patent or other protective rights of T&S or others. Further details are available from any T&S sales representative.