JFOPT SFP 155M 850nm LC DX Multimode Optical Module | 2km

Product model	JFTSM-SFP-0155-85-2-LCD	Manufacturer brand	JFOPT
Package type	SFP	Optical connector	Duplex LC
Max data rate	≤155Mbps	Channel data rate	-
Effective transmission distance	2km
Wavelength	850nm	Operating voltage	3.3V
Fiber type	MMF	Core size	50/125
Transmitter type	VCSEL	Receiver type	IDP
TX power	-9.5~-4dbm	Receiver sensitivity	-18dBm
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(commercial)	-40℃~+85℃	Storage temperature(commercial)	-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 155M 850nm LC DX Transceiver series is a compact, small form-factor pluggable module designed for duplex optical data communication, particularly suited for Fast Ethernet applications. Featuring a 20-pin SFP connector, it supports hot-plug functionality for easy installation and maintenance. Optimized for multi-mode fiber, this transceiver operates at a standard wavelength of 850nm. The transmitter section incorporates a high-performance multiple quantum well VCSEL laser, compliant with Class 1 laser safety standards under IEC 60825. On the receiver side, the module utilizes an advanced optical detection system, including an integrated GaAs detector preamplifier (IDP) mounted in an optical header and a precision limiting post-amplifier IC, ensuring reliable signal reception and processing. The SFP 155M 850nm 2km LC DX Transceiver series is fully compliant with the SFF-8472 SFP Multi-Source Agreement (MSA), guaranteeing industry-standard compatibility and interoperability for seamless integration into network systems.

TRANSCEIVER SERIES PRODUCTS

PRODUCTION & TESTING EQUIPMENT

FEATURES

850nm VCSEL laser transmitter					2km with 50/125 µm MMF 1km with 62.5/125 µm MMF
Single 3.3V power supply and TTL logic inter					Hot-pluggable SFP footprint duplex LC connector interface
Operating temperature Standard: 0℃~+70℃ Industrial: -40℃~+85℃					Digital diagnostic monitor interface compatible with SFF-8472

APPLICATION

Fast ethernet

Other optical links

STANDARD COMPLIANCE

ORDERING INFORMATION

Part No.	Data Rate	Fiber	Distance	Interface	Temperature	DDMI
JFTSM-SFP-0155-85-2-LCD	155Mbps	MMF	2km	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-0155-85-2-LCD	0	-	+70	°C
				-40	-	+85
Power supply voltage		Vcc		3.15	3.3	3.45	V
Power supply current		Icc		-	-	300	mA
Date rate	FE	-		-	125	-	Mbps

PERFORMANCE SPECIFICATIONS–ELECTRICAL

Parameter		Symbol	Min.	Typ.	Max.	Unit	Notes
Transmitter
LVPECL inputs(Differential)		Vin	400	-	2000	mVpp	AC coupled inputs
Input impedance (Differential)		Zin	85	100	115	ohm	Rin > 100 kohm @ DC
TX_disable	Disable	-	2	-	Vcc+0.3	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	400	-	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 ( 2:0 )		VoH	2.5	-	-	V	With serial ID
MOD_DEF ( 2:0 )		VoL	0	-	0.5	V	With serial ID

OPTICAL AND ELECTRICAL CHARACTERISTICS

Parameter	Symbol	Min.	Typical	Max.	Unit
50µm core diameter MMF	L	-	2	-	km
Data rate	-	-	125	-	Mbps
Transmitter
Center wavelength	λC	830	850	860	nm
Spectral width (RMS)	Δλ	-	-	0.85	nm
Average output power	Pout	-9.5	-	-4	dBm
Extinction ratio	ER	8.2	-	-	dB
Rise/Fall time(20%～80%)	tr/tf	-	-	3	ps
Total jitter	TJ	-	-	1	UI
Output optical eye	IEEE 802.3 compliant
TX disable assert time	t_off	-	-	10	us
Receiver
Center wavelength	λC	760	-	860	nm
Receiver sensitivity	Pmin	-	-	-18	dBm
Receiver overload	Pmax	-3	-	-	dBm
Return loss	-	14	-	-	dB
LOS de-assert	LOSD	-	-	-19	dBm
LOS assert	LOSA	-45	-	-	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	-
2	TX fault	Transmitter fault indication	3	1)
3	TX disable	Transmitter disable	3	2) Module disables on high or open
4	MOD-DEF2	Module definition 2	3	3) Data line for serial ID.
5	MOD-DEF1	Module definition 1	3	3) Clock line for serial ID.
6	MOD-DEF0	Module definition 0	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	6)
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) Modulation Absent, connected to VEET or VEER in the module.

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 and is thus not required on the host board. The voltage swing on these lines will be between 400 and 2000 mV differential (200 –1000 mV single ended) when properly terminated.

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. The AC coupling is done inside the module and is thus not required on the host board. The inputs will accept differential swings of 400 – 2000mV (200 – 1000mV single-ended).

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