JFOPT SFP 1.25G 1310nm 1-40km LC DX Transceiver | Dual-Mode (MM 1km/SM 40km)

Product model	JFTSM-SFP-1.25-13-1/10/15/20/40LCD	Manufacturer brand	JFOPT
Package type	SFP	Optical connector	Duplex LC
Max data rate	up to 1.25Gbps	Channel data rate	-
Effective transmission distance	1/10/15/20/30/40KM
Wavelength	1310nm	Operating voltage	3.3V
Fiber type	MMF/SMF	Core size	50/125um 9/125µm
Transmitter type	FP	Receiver type	IDP
TX power	1/10KM -9~-3dbm 15/20KM -8~-3dbm 30KM -5~0dbm 40KM -2~3dbm	Receiver sensitivity	1/10/15KM -21dbm 20KM -22dbm 30/40KM -24dbm
Digital optical monitoring(DDM)	YES	Receiver overload	-3dBm
Power consumption	<1W	Protocols	SFP MSA SFF-8472
Operating temperature(Commercial)	0℃~+70℃	Storage temperature(Commercial)	-40℃~+85℃
Operating temperature(Industrial)	-40℃~+85℃	Storage temperature(Industrial)	-40℃~+85℃

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 SFP 1.25G 1310nm 1/10/15/20/40km LC DX Transceiver series offers versatile solutions for high-speed optical data communication, catering to both multi-mode and single-mode fiber applications. For multi-mode fiber networks, the 1km transceiver is a compact, small form-factor pluggable module designed for bi-directional serial optical data communication, supporting protocols such as Ethernet and SDH/SONET. Equipped with a 20-pin SFP connector, it enables hot-plug functionality for easy installation and maintenance. Optimized for multi-mode fiber, this module operates at a standard wavelength of 1310nm, ensuring reliable performance for short-range applications.For single-mode fiber networks, the 10/15/20/40km transceiver is a high-performance module designed for long-distance bi-directional communication, compatible with Gigabit Ethernet 1000BASE-LX and Fiber Channel 1x SM-LC-L FC-PI. It also features a 20-pin SFP connector for hot-plug capability. Operating at a nominal wavelength of 1310nm, this transceiver is tailored for single-mode fiber. The transmitter incorporates a high-quality multiple quantum well 1310nm laser, compliant with Class 1 laser safety standards under IEC-60825. The receiver utilizes an advanced optical detection system, including an integrated InGaAs detector preamplifier (IDP) mounted in an optical header and a precision limiting post-amplifier IC, ensuring robust signal reception and processing.The SFP 1.25G 1310nm 1/10/15/20/40km LC DX Transceiver series is fully compliant with the SFF-8472 SFP Multi-Source Agreement (MSA), guaranteeing industry-standard compatibility and interoperability across both multi-mode and single-mode applications.

TRANSCEIVER SERIES PRODUCTS

PRODUCTION & TESTING EQUIPMENT

FEATURES

Operating data rate up to 1.25Gbps					1310nm FP laser transmitter
10km with 9/125 µm SMF 15km with 9/125 µm SMF 20km with 9/125 µm SMF 30km with 9/125 µm SMF 40Km with 9/125 µm SMF					Operating temperature Standard: 0℃~+70℃ Industrial: -40℃~+85℃
1km reach for 50/125um(800MHz.km)					Single 3.3V power supply and TTL logic interface
Hot-pluggable SFP footprint duplex LC connector interface					550m reach for 62.5/125um(550MHz.km)
Safety certification: TUV/UL/FDA

APPLICATION

Gigabit ethernet switches and routers				Fiber channel switch infrastructure
Fiber channel links

STANDARD COMPLIANCE

ORDERING INFORMATION

Part No.	Data Rate	Fiber	Distance	Interface	Temperature	DDMI
JFTSM-SFP-1.25-13-1LCD	1.25Gbps	MMF	550m/1km	LC	Standard	YES
					Industrial
JFTSM-SFP-1.25-13-10LCD	1.25Gbps	SMF	10km	LC	Standard	YES
					Industrial
JFTSM-SFP-1.25-13-15LCD	1.25Gbps	SMF	15km	LC	Standard	YES
					Industrial
JFTSM-SFP-1.25-13-20LCD	1.25Gbps	SMF	20km	LC	Standard	YES
					Industrial
JFTSM-SFP-1.25-13-40LCD	1.25Gbps	SMF	40km	LC	Standard	YES
					Industrial

ABSOLUTE MAXIMUM RATINGS

Parameter	Symbol	Min.	Max.	Unit
Storage temperature	TS	-4.0	+85	℃
Supply voltage	VCC	-0.5	3.6	V
Operating relative humidity	-	-	95	%
Exceeding any one of these values may destroy the device immediately.

RECOMMENDED OPERATING ENVIRONMENT

Parameter		Symbol		Min	Typical	Max	Unit
Operating case temperature		Tc	JFTSM-SFP-1.25-13-1/10/15/20/40LCD	0	-	+70	°C
				-40	-	+85
Power supply voltage		Vcc		3.15	3.3	3.45	V
Power supply current		Icc		-	-	300	mA
Date rate	GBE	-		-	1.25	-	Gbps
	FC			-	1.063	-
	-	-		-	-	1.25

PERFORMANCE SPECIFICATIONS–ELECTRICAL

Parameter		Symbol	Min.	Typ.	Max.	Unit	Notes
Transmitter
LVPECL inputs(Differential)		Vin	500	-	2400	mVpp	AC coupled inputs
Input impedance (Differential)		Zin	85	100	115	ohm	Rin > 100 kohm @ DC
TX_disable	Disable	-	2	-	Vcc	V	-
TX_disable	Enable	-	0	-	0.8	V	-
TX_FAULT	Fault	-	2	-	Vcc+0.3	V	-
TX_FAULT	Normal	-	0	-	0.5	V	-
Receiver
LVPECL outputs (Differential)		Vout	370	-	2000	mVpp	AC coupled output
Output impedance (Differential)		Zout	85	100	115	ohms	-
RX_LOS	LOS	-	2	-	Vcc+0.3	V	-
RX_LOS	Normal	-	0	-	0.8	V	-
MOD_DEF ( 0:2 )		VoH	2.5	-	-	V	With serial ID
MOD_DEF ( 0:2 )		VoL	0	-	0.5	V	With serial ID

OPTICAL AND ELECTRICAL CHARACTERISTICS

1310nm FP and PIN, 1km
Parameter	Symbol	Min.	Typical	Max.	Unit
50µm core diameter MMF(800MHz.km)	L	-	1	-	km
62.5µm core diameter MMF(550MHz.km)	L	-	0.55	-	km
Data rate	-	-	1.25	-	Gbps
Transmitter
Center wavelength	λC	1260	1310	1360	nm
Spectral width (RMS)	Δλ	-	-	5	nm
Average output power	Pout	-9	-	-3	dBm
Extinction ratio	ER	9	-	-	dB
Rise/Fall time(20%～80%)	tr/tf	-	-	0.26	ns
Total jitter	TJ	-	-	0.43	UI
Output optical eye	IEEE802.3ah-2004 compliant
TX disable assert time	t_off	-	-	10	us
Receiver
Center wavelength	λc	1260	-	1600	nm
Receiver sensitivity	Pmin	-	-	-21	dBm
Receiver overload	Pmax	-3	-	-	dBm
Return loss	-	12	-	-	dB
LOS de-assert	LOSD	-	-	-22	dBm
LOS assert	LOSA	-35	-	-	dBm
LOS hysteresis	-	0.5	-	-	dB

1310nm FP and PIN, 10km
Parameter	Symbol	Min.	Typical	Max.	Unit
9µm core diameter SMF	L	-	10	-	km
Data rate	-	-	1.063/1.25	-	Gbps
Transmitter
Center wavelength	λC	1270	1310	1355	nm
Spectral width (RMS)	Δλ	-	-	4	nm
Average output power	Pout	-9	-	-3	dBm
Extinction ratio	ER	9	-	-	dB
Rise/Fall time(20%～80%)	tr/tf	-	-	0.26	ns
Total jitter	TJ	-	-	0.43	UI
Output optical eye	Compliant with IEEE 802.3z
TX disable assert time	t_off	-	-	10	us
Pout@TX disable asserted	Pout	-	-	-45	dBm
Receiver
Center wavelength	λ	1270	-	1355	nm
Receiver sensitivity	Pmin	-	-	-21	dBm
Receiver overload	Pmax	-3	-	-	dBm
LOS de-assert	LOSD	-	-	-22	dBm
LOS assert	LOSA	-35	-	-	dBm
LOS hysteresis	-	0.5	-	-	dB

1310nm FP and PIN, 15km
Parameter	Symbol	Min.	Typical	Max.	Unit
9µm core diameter SMF	L	-	15	-	km
Data rate	-	-	1.063/1.25	-	Gbps
Transmitter
Center wavelength	λC	1260	1310	1360	nm
Spectral width (RMS)	Δλ	-	-	4	nm
Average output power	Pout	-8	-	-3	dBm
Extinction ratio	ER	9	-	-	dB
Rise/Fall time(20%～80%)	tr/tf	-	-	0.26	ns
Total jitter	TJ	-	-	0.43	UI
Output optical eye	Compliant with IEEE 802.3z
TX disable assert time	t_off	-	-	10	us
Pout@TX disable asserted	Pout	-	-	-45	dBm
Receiver
Center wavelength	λ	1260	-	1600	nm
Receiver sensitivity	Pmin	-	-	-21	dBm
Receiver overload	Pmax	-3	-	-	dBm
LOS de-assert	LOSD	-	-	-22	dBm
LOS assert	LOSA	-35	-	-	dBm
LOS hysteresis	-	0.5	-	-	dB

1310nm FP and PIN, 20km
Parameter	Symbol	Min.	Typical	Max.	Unit
9µm core diameter SMF	L	-	20	-	km
Data rate	-	-	1.063/1.25	-	Gbps
Transmitter
Center wavelength	λC	1260	1310	1360	nm
Spectral width (RMS)	Δλ	-	-	4	nm
Average output power	Pout	-8	-	-3	dBm
Extinction ratio	ER	9	-	-	dB
Rise/Fall time(20%～80%)	tr/tf	-	-	0.26	ns
Total jitter	TJ	-	-	0.43	UI
Output optical eye	Compliant with IEEE 802.3z
TX disable assert time	t_off	-	-	10	us
Pout@TX disable asserted	Pout	-	-	-45	dBm
Receiver
Center wavelength	λ	1260	-	1600	nm
Receiver sensitivity	Pmin	-	-	-22	dBm
Receiver overload	Pmax	-3	-	-	dBm
LOS de-assert	LOSD	-	-	-23	dBm
LOS assert	LOSA	-35	-	-	dBm
LOS hysteresis	-	0.5	-	-	dB

1310nm FP and PIN, 30km
Parameter	Symbol	Min.	Typical	Max.	Unit
9µm core diameter SMF	L	-	30	-	km
Data rate	-	-	1.063/1.25	-	Gbps
Transmitter
Center wavelength	λC	1260	1310	1360	nm
Spectral width (RMS)	Δλ	-	-	4	nm
Average output power	Pout	-5	-	0	dBm
Extinction ratio	ER	9	-	-	dB
Rise/Fall time(20%～80%)	tr/tf	-	-	0.26	ns
Total jitter	TJ	-	-	0.43	UI
Output optical eye	Compliant with IEEE 802.3z
TX disable assert time	t_off	-	-	10	us
Pout@TX disable asserted	Pout	-	-	-45	dBm
Receiver
Center wavelength	λ	1260	-	1600	nm
Receiver sensitivity	Pmin	-	-	-24	dBm
Receiver overload	Pmax	-3	-	-	dBm
LOS de-assert	LOSD	-	-	-25	dBm
LOS assert	LOSA	-35	-	-	dBm
LOS hysteresis	-	0.5	-	-	dB

1310nm FP and PIN, 40km
Parameter	Symbol	Min.	Typical	Max.	Unit
9µm core diameter SMF	L	-	40	-	km
Data rate	-	-	1.063/1.25	-	Gbps
Transmitter
Center wavelength	λC	1260	1310	1360	nm
Spectral width (-20dB)	Δλ	-	-	1	nm
Side mode suppression ratio	SMSR	30	-	-	dBm
Average output power	Pout	-2	-	3	dBm
Extinction ratio	ER	9	-	-	dB
Rise/Fall time(20%～80%)	tr/tf	-	-	0.26	ns
Total jitter	TJ	-	-	0.43	UI
Output optical eye	Compliant with IEEE 802.3z
TX disable assert time	t_off	-	-	10	us
Pout@TX disable asserted	Pout	-	-	-45	dBm
Receiver
Center wavelength	λ	1260	-	1600	nm
Receiver sensitivity	Pmin	-	-	-24	dBm
Receiver overload	Pmax	-3	-	-	dBm
LOS de-assert	LOSD	-	-	-25	dBm
LOS assert	LOSA	-35	-	-	dBm
LOS hysteresis	-	0.5	-	-	dB

FUNCTIONAL DESCRIPTION OF TRANSCEIVER

SFP TRANSCEIVER ELECTRICAL PAD LAYOUT

PIN FUNCTION DEFINITIONS

Pin	Name	Function	Plug Seq.	Notes
1	VeeT	Transmitter ground	1	5)
2	TX Fault	Transmitter fault indication	3	1)
3	TX Disable	Transmitter disable	3	2) Module disables on high or open
4	MOD-DEF2	SDA	3	3) 2 wire serial ID interface.
5	MOD-DEF1	SCL	3	3) 2 wire serial ID interface.
6	MOD-DEF0	MOD_ABS	3	3) Grounded within the module.
7	Rate Select	Not connect	3	Function not available
8	LOS	Loss of signal	3	4)
9	VeeR	Receiver ground	1	5)
10	VeeR	Receiver ground	1	5)
11	VeeR	Receiver ground	1	5)
12	RD-	Inv. received data out	3	6)
13	RD+	Received data out	3	7)
14	VeeR	Receiver ground	1	5)
15	VccR	Receiver power	2	7) 3.3V ± 5%
16	VccT	Transmitter power	2	7) 3.3V ± 5%
17	VeeT	Transmitter ground	1	5)
18	TD+	Transmit data In	3	8)
19	TD-	Inv. transmit data In	3	8)
20	VeeT	Transmitter ground	1	5)

Notes:
1) TX Fault is an open collector/drain output, which should be pulled up with a 4.7K – 10KΩ resistor on the host board. Pull up voltage between 2.0V and VccT/R+0.3V. When high, output indicates a laser fault of some kinds. Low indicates normal operation. In the low state, the output will be pulled to < 0.8V.

2) TX disable is an input that is used to shutdown the transmitter optical output. It is pulled up within the module with a 4.7K – 10 KΩ resistor. Its states are:
Low (0 – 0.8V): Transmitter on
(>0.8, < 2.0V): Undefined
High (2.0 – 3.465V): Transmitter Disabled
Open: Transmitter Disabled

3) Mod-Def 0,1,2. These are the module definition pins. They should be pulled up with a 4.7K – 10K resistor on the host board. The pull-up voltageshall be VccT or VccR .
Mod-Def 0 is grounded by the module to indicate that the module is present
Mod-Def 1 is the clock line of two wire serial interface for serial ID
Mod-Def 2 is the data line of two wire serial interface for serial ID

4) LOS is an open collector/drain output, which should be pulled up with a 4.7K – 10KΩ resistor. Pull up voltage between 2.0V and VccT/R+0.3V. When high, this output indicates the received optical power is below the worst-case receiver sensitivity (as defined by the standard in use).Low indicates normal operation. In the low state, the output will be pulled to < 0.8V.

5) VeeR and VeeT may be internally connected within the SFP module.

6) RD-/+: These are the differential receiver outputs. They are AC coupled 100Ω differential lines which should be terminated with 100Ω (differential) at the user SERDES. The AC coupling is done inside the module.

7) VccR and VccT are the receiver and transmitter power supplies. They are defined as 3.3V ±5% at the SFP connector pin. Maximum supply current is 300Ma. Recommended host board power supply filtering is shown below. Inductors with DC resistance of less than 1ohm should be used in order to maintain the required voltage at the SFP input pin with 3.3V supply voltage. When the recommended supply-filtering network is used, hot plugging of the SFP transceiver module will result in an inrush current of no more than 30Ma greater than the steady state value.VccR and VccT may be internally connected within the SFP transceiver module.

8) TD-/+: These are the differential transmitter inputs. They are AC-coupled, differential lines with 100Ω differential termination inside the module.

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