25G 850nm SFP28 Optical Transceiver for liquid cooling

Description

The F-tone Networks FTCS-25G-SR-2XX-xxx is a single-Channel, Pluggable, Fiber-Optic SFP28 for 25 Gigabit Ethernet and Infiniband EDR 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 70 m using OM3 fiber or 100 m using OM4 fiber. This module is designed to op

erate over multimode fiber systems using a nominal wavelength of 850nm. The electrical interface uses a 20 contact edge type connector. This module incorporates F-tone Networks proven circuit and VCSEL 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 70m on OM3 MMF and 100m on OM4 MMF

● 850nm VCSEL laser and PIN photo-detector

● Internal CDR on both Transmitter and Receiver channel

● Optional pigtail type and length

● Single 3.3V power supply

● Power dissipation < 1W

● Digital diagnostics functions are available via the I2C interface

● RoHS compliant

● Case operating temperature

Commercial: 0 ~ +60℃

Industrial: -40 ~ +85℃

Applications

● 25GBASE-SR Ethernet

● Liquid immersion environment

Absolute Maximum Ratings
Table 1 – 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
Table 2 – 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			300	mA
Fiber Length on 50/125μm high-bandwidth (OM3) MMF				70	m
Fiber Length on 50/125μm high-bandwidth (OM4) MMF				100	m
Liquid immersion depth				10	m

Optical and Electrical Characteristics
Table 3 – Optical and Electrical Characteristics 

Parameter		Symbol	Min	Typical	Max	Unit	Notes
Transmitter
Data rate		BR		25.78		Gbps
Centre Wavelength		λc	840	850	860	nm
Spectral Width (-20dB)		σ			0.6	nm
Average Output Power		Pavg	-8.4		2.4	dBm
Optical Power OMA		POMA	-6.4		3	dBm
Extinction Ratio		ER	2			dB
Differential data input swing		VIN,PP	40		1000	mV
Input Differential Impedance		ZIN	90	100	110	Ω
TX Disable	Disable		2.0		Vcc	V
	Enable		0		0.8	V
TX Fault	Fault		2.0		Vcc	V
	Normal		0		0.8	V
Receiver
Data rate		BR		25.78		Gbps
Centre Wavelength		λc	840	850	860	nm
Receiver Sensitivity (OMA)		Psens	–	–	-10	dBm
Stressed Sensitivity (OMA)			–	–	-5.2	dBm
Receiver Power (OMA)					3	dBm
LOS De-Assert		LOSD			-13	dBm
LOS Assert		LOSA	-30			dBm
LOS Hysteresis			0.5			dB
Differential data output swing		Vout,PP	300		850	mV
LOS		High	2.0		Vcc	V
		Low			0.8	V

 Notes:  Receive Sensitivity measured with a prbs31 pattern @25.78125Gb/s, BER 1E-5.

Mechanical Dimensions

Ordering information

产品型号	产品描述
FTCS-25G-SR-2XX-xxx	25Gbps, 850nm, SFP28, MMF, DDM ,liquid immersion,0ºC ~ +60ºC
FTCS-25G-SR-2XX-xxxI	25Gbps, 850nm, SFP28, MMF, DDM ,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.ne 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.