JFOPT SFP28 25G 1310nm 40km ER LC DX Transceiver - IEEE 802.3CC 25GBASE-ER Compliant Optical Module

Product model	JFTSM-SFP28-25-13-40(ER)-LCD	Manufacturer brand	JFOPT
Package type	SFP28	Optical connector	Duplex LC
Max data rate	25.78G	Channel data rate	10.31Gbps
Effective transmission distance	40km
Wavelength	1310nm	Operating voltage	3.3V
Fiber type	SMF	Core size	9/125
Transmitter type	DML	Receiver type	APD
TX power	-0.5~6.5dBm	Receiver sensitivity	＜19.5dBm
Digital diagnostic monitoring(DDM)	YES	Receiver overload	-5dBm
Power consumption	≤2W	Protocols	SFF-8472, SFF-8432, SFF-8431
Operating temperature(Commercial)	0℃~+70℃	Storage temperature(Commercial)	-40℃~+85℃
Operating temperature(Industrial)	-20 to 75℃ (-4 to167℉)	Storage temperature(Industrial)	-40 to 85℃ (-40 to 185℉)

PRODUCTION LINE INTRODUCTION

JFOPT continues to invest in optical transceiver production, covering a full range of optical transceiver such as 1*9, SFP, 10G, 25G, 100G, 200G, 400G, 800G GPON/EPON/XG/XGSPON OLT transceiver. At the same time, our company provides TOSA, ROSA, BOSA semi-finished device solutions for the downstream peer. JFOPT's production line has a daily production capacity of 10,000 optical transceivers and 20,000 optical devices. In addition, JFOPT's optical transceiver have industry-leading high temperature resistance and anti-interference capability, and are widely used in computing centers, operators, traffic security, power facilities and other industries.

PRODUCT PRESENTATION

The JFOPT SFP28 25G 1310nm 40km ER LC DX is an ultra-compact optical transceiver module designed to convert 25Gbps serial CML electrical data into optical signals in compliance with the 25GBASE-ER standard. Its electrical interface adheres to SFI specifications, while the EML transmitter and APD receiver deliver exceptional performance for Ethernet applications, supporting links of up to 40km over single-mode fiber (SMF).This SFP28 ER module is fully compliant with SFF-8431, SFF-8432, and IEEE 802.3CC 25GBASE-ER standards. It also supports digital diagnostic functions via a 2-wire serial interface, as outlined in SFF-8472.With a fully SFP-compliant form factor, the module offers hot-pluggability, seamless optical port upgrades, and low EMI emissions, making it a reliable and efficient solution for high-speed networking.

TRANSCEIVER SERIES PRODUCTS

PRODUCTION & TESTING EQUIPMENT

FEATURES

25.78Gb/s bit rates					Hot-pluggable
Duplex LC connector					EML transmitter, APD photo-detector
Up to 40km on SMF					Power supply :+3.3V
2-wire interface for management specifications compliant with SFF 8472 digital diagnostic monitoring interface for optical transceivers					Operating case temperature Range: 0~ 70°C
Cost effective SFP28 solution, enables higher port densities and greater bandwidth					Low power consumption<1.5W

APPLICATION

High-speed storage area networks					Computer cluster cross-connect
Custom high-speed data pipes					Inter rack connection

STANDARD COMPLIANCE

ABSOLUTE MAXIMUM RATINGS

Parameter	Symbol	Min.	Typ.	Max.	Unit	Ref.
Storage temperature	TS	-40	-	+85	°C	-
Case operating temperature	TA	0	-	70	°C	-
Maximum supply voltage	Vcc	0	-	3.6	V	-
Relative humidity	RH	5	-	95	%	-

ELECTRICALCTRICAL CHARACTERISTICS

Parameter	Symbol	Min.	Typ.	Max.	Unit	Note
Supply voltage	VCC	3.135	-	3.465	V	-
Supply current	Icc	-	-	450	mA	-
Power consumption	P	-	-	1.5	W	-
Data rate	R	-	25.78	-	Gb/s	-
Transmitter Section:
Input differential impedance	Rin	-	100	-	Ω	1
Tx input single ended DC voltage tolerance (Ref VeeT)	V	-0.3	-	4	V	-
Differential input voltage swing	Vin,pp	180	-	700	mV	2
Transmit disable voltage	VD	2	-	Vcc	V	-
Transmit enable voltage	VEN	Vee	-	Vee+0.8	V	-
Receiver section:
Single ended output voltage tolerance	V	-0.3	-	4	V	-
Rx output diff voltage	Vo	150	-	900	mV	-
Rx output rise and fall time	Tr/Tf	9.5	-	-	ps	3
LOS fault	VLOS fault	2	-	VCCHOST	V	4
LOS normal	VLOS norm	Vee	-	Vee+0.8	V	4
Notes: 1.Connected directly to TX data input pins. AC coupling from pins into laser driver IC. 2.Per SFF-8431 Rev 3.0 3.20%～80% 4.LOS is an open collector output. Should be pulled up with 4.7k – 10kΩ on the host board. Normal operation is logic 0; loss of signal is logic 1. Maximum pull-up voltage is 5.5V.

OPTICAL CHARACTERISTICS

Parameter	Symbol	Min.	Typ.	Max	Unit	Notes
Transmitter Section:
Center wavelength	λt	1295	-	1310	nm	-
Spectral width	△λ	-	-	1	nm	-
Average optical power	Pavg	0	-	+6	dBm	1
Laser off power	Poff	-	-	-30	dBm	-
Extinction ratio	ER	4	-	-	dB	-
Receiver Section:
Center wavelength	λr	1295	-	1325	nm	-
Receiver sensitivity(OMA)	Sen	-	-	-19	dBm	2
Stressed sensitivity(OMA)	Sen2	-	-	-16.5	dBm	2
Los assert	LOSA	-30	-	-	dBm	-
Los dessert	LOSD	-	-	-11	dBm	-
Los hysteresis	LOSH	0.5	-	5	dB	-
Overload	-	-9	-	-	dBm	3
Receiver reflectance	-	-	-	-12	dB	-
Notes: 1.Average power figures are informative only, per IEEE802.3CC. 2.Conditions of stressed receiver tests per IEEE802.3CC. At 5E-5 BER. 3.Receiver overload specified in OMA and under the worst comprehensive stressed condition.

TIMING CHARACTERISTICS

Parameter	Symbol	Min.	Typ.	Max.	Unit
TX_disable assert time	t_off	-	-	100	us
TX_disable negate time	t_on	-	-	2	ms
Time to initialize include reset of TX_FAULT	t_int	-	-	300	ms
TX_FAULT from fault to assertion	t_fault	-	-	1	ms
TX_disable time to start reset	t_reset	10	-	-	us
Receiver loss of signal assert time	TA,RX_LOS	-	-	100	us
Receiver loss of signal deassert time	Td,RX_LOS	-	-	100	us
Rate-select chage time	t_ratesel	-	-	10	us
Serial ID clock time	t_serial-clock	-	-	100	kHz

DIGITAL DIAGNOSTIC SPECIFICATIONS

Data Address	Parameter	Accuracy	Unit
96-97	Transceiver internal temperature	±3.0	℃
98-99	VCC3 internal supply voltage	±3.0	%
100-101	Laser bias current	±10	%
102-103	Tx output power	±2.0	dBm
104-105	Rx input power	±2.0	dBm

PIN ASSIGNMENT

Pin	Symbol	Description	Notes
1	VeeT	Module transmitter ground	1
2	TX fault	Module transmitter fault	2
3	TX disable	Transmitter disable; turns off transmitter laser output	3
4	SDL	2 wire serial interface data input/output (SDA)	4
5	SCL	2 wire serial interface clock input (SCL)	4
6	MOD_ABS	Module absent, connect to VeeR or VeeT in the module	2
7	RS0	Rate select0, optionally control SFP+ receiver. When high,input data rate >4.5Gb/ s; when low, input data rate <=4.5Gb/s	-
8	LOS	Receiver Loss of signal indication	-
9	RS1	Rate select0, optionally control SFP+ transmitter. When high,input data rate >4.5Gb/s; when low, input data rate <=4.5Gb/s	-
10	VeeR	Module receiver ground	1
11	VeeR	Module receiver ground	1
12	RD-	Receiver inverted data out put	-
13	RD+	Receiver non-inverted data out put	-
14	VeeR	Module receiver ground	1
15	VccR	Module receiver 3.3V supply	-
16	VccT	Module transmitter 3.3V supply	-
17	VeeT	Module transmitter ground	1
18	TD+	Transmitter non-inverted data out put	-
19	TD-	Transmitter inverted data out put	-
20	VeeT	Module transmitter ground	1
Notes: 1.The module ground pins shall be isolated from the module case. 2.This pin is an open collector/drain output pin and shall be pulled up with 4.7K-10Kohms to Host_Vcc on the host board. 3.This pin shall be pulled up with 4.7K-10Kohms to VccT in the module. 4.This pin is an open collector/drain output pin and shall be pulled up with 4.7K-10Kohms to Host_Vcc on the host board.

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