25G 1310nm SFP28 Transceiver for liquid cooling

Description
The F-tone Networks FTCS-25G-LR-2XX-xxx is a single-Channel, Pluggable, Fiber-Optic SFP28 for 25 Gigabit Ethernet and CPRI Option 10 Applications, it’s specially reliable design to enable liquid immersion environment. It is a high performance module for short-range data communication and interconnect applications which 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 of pigtail is optional. This module incorporates F-tone Networks proven circuit and technology to provide reliable long life, high performance, and consistent service.

Features
● Hot-pluggable SFP28 form factor
● Supports 25Gbps data rate
● Maximum link length of 10km
● Uncooled 1310nm DML transmitter and PIN receiver
● Internal CDR on both Transmitter and Receiver channel
● Optional pigtail type and length
● Single 3.3V power supply
● Power dissipation < 1.5W
● RoHS compliant (2011/65/EU, lead free)
● Case operating temperature
      Commercial: 0 ~ +60℃
      Industrial: -40 ~ +85℃

Applications
● 25GBASE-LR Ethernet
● CPRI Option 10
● Liquid immersion environment
● Support 10G CPRI option 8 by CDR bypass

Absolute Maximum Ratings

Parameter	Symbol	Min	Max	Unit
Supply Voltage	Vcc	0	3.6	V
Storage Temperature	Ts	-40	+85	°C
Operating Humidity	–	5	85	%

Recommended Operating Conditions

Parameter	Symbol	Min	Typical	Max	Unit
Operating Case Temperature	Tc	0		+60	°C
Power Supply Voltage	Vcc	3.13	3.3	3.47	V
Power Supply Current	Icc			450	mA
Liquid immersion depth				10	m

Electrical Specifications

Parameter	Symbol	Min	Typical	Max	Unit
Differential Input Impedance	Zin	90	100	110	ohm
Differential Output Impedance	Zout	90	100	110	ohm
Differential Input Voltage Amplitude1	ΔVin	300		1100	mVp-p
Differential Output Voltage Amplitude2	ΔVout	500		800	mVp-p
Input Logic Level High	VIH	2.0		Vcc	V
Input Logic Level Low	VIL	0		0.8	V
Output Logic Level High	VOH	Vcc-0.5		Vcc	V
Output Logic Level Low	VOL	0		0.4	V

Notes:
1. Differential input voltage amplitude is measured between TxnP and TxnN.
2. Differential output voltage amplitude is measured between RxnP and RxnN.

Optical Characteristics

Parameter	Symbol		Min	Typical	Max	Unit	Notes
Transmitter
Data rate		BR		25.78		Gbps
Centre Wavelength		λc	1295	1310	1325	nm
Spectral Width (-20dB)		σ			1	nm
Side Mode Suppression Ratio		SMSR	30			dB
Average Output Power		Pavg	-7		2	dBm
Optical Modulation Amplitude		OMA	-4		2.2	dBm
Extinction Ratio		ER	3.5			dB
Eye Mask Coordinates		{0.31, 0.4, 0.45, 0.34, 0.38, 0.4}
Receiver
Data rate		BR		25.78		Gbps
Centre Wavelength		λc	1295	1310	1325	nm
Average Power at Receiver					2	dBm
Receive reflectance(max)					-26	dB
Receiver Sensitivity (OMA)		Psens	–	–	-12.0	dBm	1
Stressed receiver sensitivity(OMA)					-9.5	dBm	2
LOS De-Assert		LOSD			-12	dBm
LOS Assert		LOSA	-30			dBm
LOS Hysteresis			0.5			dB

Notes: 
1. For 25G-LR with FEC, receiver sensitivity is defined at 5E-5 BER level, not 10-12 BER level.
2. Measured with conformance test signal at TP3 for BER=5E-5.

Mechanical Dimensions

Ordering information

Part Number	Product Description
FTCS-25G-LR-2XX-xxx	25Gbps, 1310nm, SFP28, SMF, liquid immersion,0ºC ~ +60ºC
FTCS-25G-LR-2XX-xxxI	25Gbps, 1310nm, SFP28, SMF, liquid immersion,-40ºC ~ +85ºC
XX：pigtail connector type, optional: LC/FC/MPOxxx：pigtail length in meters.

北亿纤通 | F-tone Networks

企业邮箱： sales@f-tone.com
企业手机：19081343401
企业电话：028-85255257
企业传真：028-85977702

注：本产品有全国产化型号可选

Important Notice

Performance figures, data and any illustrative material provided in this data sheet are typical and must be specifically confirmed in writing by F-tone Networks before they become applicable to any particular order or contract. In accordance with the F-tone Networks 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 F-tone Networks or others. Further details are available from any F-tone Networks sales representative.dom from patent or other protective rights of F-tone Networks or others. Further details are available from any F-tone Networks sales representative.ailable from any F-tone Networks sales representative.y F-tone Networks sales representative.