1.25g Bidi Sc Type SFP Fiber Optic Transceiver 20km

• Customization: Available
• Usage: Computer
• Type: Wired
• Model NO.: DF-3424S-L2CD
• Support Network: Ethernet
• Information content: Data
• Certification: CE, ISO, RoHS
• Condition: New
• Item Name: 1.2 Sm Dual Fibers SFP+ Optical Module 10km 1310nm
• Transmit Rate: 1.25g
• Transmit Distance: 20km
• Fiber Type: Single Fiber
• Interface Tyoe: Sc, LC or RJ45 Are Available
• Single Power Supply: More Than 3.3V
• Standard Temperature: 0 -70
• Wavelenth: 1310nm
• Warranty: 2 Years
• Transport Package: Pet Bag+Carton
• Trademark: TAKFLY
• Origin: China
• Production Capacity: 50000PCS/Week

Product Description

1.25G Bidi LC type SFP fiber optic transceiver 20km

1.Features

1.Dual data-rate of 1.25Gbps/1.063Gbps operation;
2.1310nm FP laser and PIN photo detector for 20km transmission;
3.Compliant with SFP MSA and SFF8472 withsimplex LC receptacle;
4.Digital Diagnostic Monitoring: Internal Calibration or External Calibration;
5.Compatible with SONET OC-24-LR-1; 6.Compatible with RoHS;
7.+3.3V single power supply;
8.Operating case temperature:
Standard : 0 to +70ºC;
Industrial : -40 to +85-176ºC;

2.Application

1.Gigabit Ethernet;
2.Fiber Channel;
3.Switch to Switch interface; 4.Switched backplane applications;
5. Router/Server interface;
6.Other optical transmission systems;

3.Description

The SFP-BIDI transceivers are high performance, cost effective modules supporting dual data-rate of 1.25Gbps/1.0625Gbps and 20km transmission distance with SMF.

The transceiver consists of three sections: a FP laser transmitter, a PIN photodiode integrated with a trans-impedance preamplifier (TIA) and MCU control unit. All modules satisfy class I laser safety requirements.
The transceivers are compatible with SFP Multi-Source Agreement (MSA) and SFF-8472. For further information.

4.Absolute Maximum Ratings
 

Parameter	Symbol	Min	Max	Unit
Supply Voltage	Vcc	-0.5	4.5	V
Storage Temperature	Ts	-40	+85	°C
Operating Humidity	-	5	85	%

5.Recommended Operating Conditions
 

Parameter			Symbol	Min	Typical	Max	Unit
Operating Case Temperature		Standard	Tc	0		+70	°C
		Industrial		-40		+85	°C
Power Supply Voltage			Vcc	3.13	3.3	3.47	V
Power Supply Current			Icc			300	mA
Data Rate	Gigabit Ethernet				1.25		Gbps
	Fiber Channel				1.063

6.Optical and Electrical Characteristics

DF-3424x-L2x(D):  (FP and PIN, 1310nm, 20km Reach)
 

Parameter		Symbol		Min	Typical	Max	Unit	Notes
Transmitter
Centre Wavelength			λc	1260	1310	1360	nm
Spectral Width (RMS)			λ			4	nm
Average Output Power			Pout	-9		-3	dBm	1
Extinction Ratio			ER	9			dB
Optical Rise/Fall Time (20%~80%)			tr/tf			0.26	ns
Data Input Swing Differential			VIN	400		1800	mV	2
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
Centre Wavelength			λc	1470		1510	nm
Receiver Sensitivity						-23	dBm	3
Receiver Overload				-3			dBm	3
LOS De-Assert			LOSD			-24	dBm
LOS Assert			LOSA	-35			dBm
LOS Hysteresis				1		4	dB
Data Output Swing Differential			Vout	400		1800	mV	4
LOS			High	2.0		Vcc	V
			Low			0.8	V	Notes:

Note:

1. The optical power is launched into SMF;
2. PECL input, internally AC-coupled and terminated;
3. Measured with a PRBS 27-1 test pattern @1250Mbps, BER ≤1×10-12;
4. Internally AC-coupled;

7.Timing and Electrical
 

Parameter	Symbol	Min	Typical	Max	Unit
Tx Disable Negate Time	t_on			1	ms
Tx Disable Assert Time	t_off			10	µs
Time To Initialize, including Reset of Tx Fault	t_init			300	ms
Tx Fault Assert Time	t_fault			100	µs
Tx Disable To Reset	t_reset	10			µs
LOS Assert Time	t_loss_on			100	µs
LOS De-assert Time	t_loss_off			100	µs
Serial ID Clock Rate	f_serial_clock			400	KHz
MOD_DEF (0:2)-High	VH	2		Vcc	V
MOD_DEF (0:2)-Low	VL			0.8	V

8.Diagnostics
 

Parameter	Range	Unit	Accuracy	Calibration
Temperature	0 to +70	°C	±3°C	Internal / External
Voltage	3.0 to 3.6	V	±3%	Internal / External
Bias Current	0 to 100	mA	±10%	Internal / External
TX Power	-9 to -3	dBm	±3dB	Internal / External
RX Power	-23 to -3	dBm	±3dB	Internal / External

9.Pin Descriptions
 

Pin	Signal Name	Description	Plug Seq.	Notes
1	VEET	Transmitter Ground	1
2	TX FAULT	Transmitter Fault Indication	3	Note 1
3	TX DISABLE	Transmitter Disable	3	Note 2
4	MOD_DEF(2)	SDA Serial Data Signal	3	Note 3
5	MOD_DEF(1)	SCL Serial Clock Signal	3	Note 3
6	MOD_DEF(0)	TTL Low	3	Note 3
7	Rate Select	Not Connected	3
8	LOS	Loss of Signal	3	Note 4
9	VEER	Receiver ground	1
10	VEER	Receiver ground	1
11	VEER	Receiver ground	1
12	RD-	Inv. Received Data Out	3	Note 5
13	RD+	Received Data Out	3	Note 5
14	VEER	Receiver ground	1
15	VCCR	Receiver Power Supply	2
16	VCCT	Transmitter Power Supply	2
17	VEET	Transmitter Ground	1
18	TD+	Transmit Data In	3	Note 6
19	TD-	Inv. Transmit Data In	3	Note 6
20	VEET	Transmitter Ground	1

Notes:
Plug Seq.: Pin engagement sequence during hot plugging.
1) TX Fault is an open collector output, which should be pulled up with a 4.7k~10kΩ resistor on the host board to a voltage between 2.0V and Vcc+0.3V. Logic 0 indicates normal operation; Logic 1 indicates a laser fault of some kind. In the low state, the output will be pulled to less than 0.8V.
2) TX Disable is an input that is used to shut down the transmitter optical output. It is pulled up within the module with a 4.7k~10kΩ resistor. Its states are:
Low (0 to 0.8V):             Transmitter on
(>0.8V, < 2.0V):             Undefined
High (2.0 to 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~10kΩ resistor on the host board. The pull-up voltage shall 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 output, which should be pulled up with a 4.7k~10kΩ resistor. Pull up voltage between 2.0V and Vcc+0.3V. Logic 1 indicates loss of signal; Logic 0 indicates normal operation. In the low state, the output will be pulled to less than 0.8V.
5) RD-/+: These are the differential receiver outputs. They are internally AC-coupled 100 differential lines which should be terminated with 100Ω (differential) at the user SERDES.
6) TD-/+: These are the differential transmitter inputs. They are internally AC-coupled, differential lines with 100Ω differential termination inside the module.

10.Mechanical Dimensions



11.Ordering information
 

Part Number	Product Description
DF-3424S-L2C	1310nm, 1.25Gbps, SC,20km,  0°C~+70°C
DF-3424S-L2CD	1310nm, 1.25Gbps, SC,20km,  0°C~+70°C, With Digital Diagnostic Monitoring
DF-3424L-L2C	1310nm, 1.25Gbps, LC,20km,  0°C~+70°C
DF-3424L-L2CD	1310nm, 1.25Gbps, LC,20km,  0°C~+70°C, With Digital Diagnostic Monitoring
DF-3424S-L2T	1310nm, 1.25Gbps, SC,20km,  -40 to +85°C
DF-3424S-L2TD	1310nm, 1.25Gbps, SC,20km,  -40 to +85°C, With Digital Diagnostic Monitoring
DF-3424L-L2T	1310nm, 1.25Gbps, LC,20km,  -40 to +85°C
DF-3424L-L2TD	1310nm, 1.25Gbps, LC,20km,  -40 to +85°C, With Digital Diagnostic Monitoring

12.Our item images:







13.Company Information:

Takfly, established in 2000, has been manufacturing and exporting fiber cable, adapter, attenuator, connector, coupler, splitter, termination box, ODF, fiber instruments, media conceiver, switch, optical module, CWDM/DWDM, etc. Takfly's products have passed the management verification: ISO14001: 2004. and goods have passed RoHS, CE, FCC, REACH, EN50575, ISO9001, etc.

So far, Our products have been widely installed in many big worldwide project and work perfectly. Many project contactors ask the first and second operators to purchase fiber items from Takfly for their new project. In addition, we also have builted long term cooperation with Lapp, Amper, Telefonica, orange and Ericsson. All enquiry are warmly welcomed here no matter it's small or big, we promise to provide all customers high quality and good price item.

14.Why choose Takfly?

Service

1.Customer's logo: Acceptable;
2.General inspection on fixing before packing;
3.Third party inspection: Acceptable;
 
Quality Control

All products must go through five checks before manufacturing process;
1.Material incoming inspection before production;
2.Full check after every individual process finished;
3.Full check after production half-done;
4.Full check before packing;
5.Spots check after production packed before shipping;
 
Advantage

1.15 years experience in manufacturing fiber optic products;
2.Availability of R & D with more than 10 engineers;
3.Available of design and making mold with special molding house;
4.High quality, attractive price and fast delivery(2-7days);
5.OEM, ODM customer designs are also welcomed;
6.More than 200 workers;
7.Excellent service;

Delivery

1.Packing: Plastic bag& carton, Neutral packing or as your required;
2.Sample time: 1-3 days after confirm;
3.Order lead time: 2-7working days depend on quantity and products;
4.Shipping port: Shenzhen China or HK;
5.Shipping term: EXW or FOB;
 
Shipping 

1.Once confirmed the order, and payment sent after finishing goods;
2.Goods will be sent within 7 days with the fast, reasonable and efficient shipping mode such as DHL, EMS, UPS,FEDEX, TNT, etc;
3.Please make sure your postal address is correct. Any lost and mistakes because  of wrong address are not supplier's responsibility;
4.Please do not bid if you disagree with the shipping and
handling charge;

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