1.25gbps SFP Bi-Directional Transceiver-20km Single Fiber SFP

• Customization: Available
• Usage: Fiber Telecommunication
• Type: Fiber Transceiver
• Model NO.: DF-B3424-3LCD20
• Support Network: Ethernet
• Information content: Data
• Certification: CE, ISO, RoHS
• Condition: New
• Name: 1.25gbps SFP Module
• Data-Rate: 1.25gbps
• Transport Package: in Plastic Bag Then in Carton
• Specification: SFP module
• Trademark: Takfly
• Origin: China
• HS Code: 854670000
• Production Capacity: 50000/Month

Product Description

1.25Gbps SFP Bi-Directional Transceiver, 20KM Reach Tx1310nm/Rx1490nm

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, please refer to SFP MSA.

1. Fearture

• Dual data-rate of 1.25Gbps/1.063Gbps operation
• 1310nm FP laser and PIN photodetector for 20KM transmission
• Compliant with SFP MSA and SFF-8472 with simplex LC receptacle
• Digital Diagnostic Monitoring:Internal Calibration or External Calibration
• Compatible with SONET OC-24-LR-1
• Compatible with RoHS
• +3.3V single power supply
• Operating case temperature range:0 °C to +70 °C (Commercial) / -40 °C to +85 °C (Industrial)

2. Applications 

• Gigabit Ethernet
• Fiber Channel
• Switch to Switch interface
• Switched backplane applications
• Router/Server interface
• Other optical transmission systems 

3. Bsolute Maximum Ratings

Parameter	Symbol	Min	Typ	Max	Unit	Ref.
Maximum Supply Voltage	Vcc	-0.5		4.7	V
Storage Temperature	TS	-40		85	°C
Case Operating Temperature	TOP	0		70	°C

4. Electrical Characteristics (TOP = 0 to 70ºC, VCC = 3.15 to 3.60Volts)

Parameter	Symbol	Min	Typ	Max	Unit	Ref.
Supply Voltage	Vcc	3.15	3.3	3.6	V
Supply Current	Icc		185	280	mA
Transmitter
Input differential impedance	Rin		100		Ω	1
Single ended data input swing	Vin,pp	250		1200	mV
Transmit Disable Voltage	VD	Vcc-1.3		Vcc	V
Transmit Enable Voltage	VEN	Vee		Vee+ 0.8	V	2
Transmit Disable Assert Time				10	us
Receiver
Single ended data output swing	Vout,pp	250		800	mV	3
Data output rise time	tr		100	175	ps	4
Data output fall time	tf		100	175	ps	4
LOS Fault	VLOS fault	Vcc-0.5		VccHOST	V	5
LOS Normal	VLOS norm	Vee		Vee+0.5	V	5
Power Supply Rejection	PSR	100			mVpp	6

Remark:    

1. Connected directly to TX data input pins. AC coupled thereafter.    
2. Or open circuit.    
3. Into 100 ohms differential termination.    
4. 20 - 80 %    
5. Loss Of Signal is LVTTL. Logic 0 indicates normal operation; logic 1 indicates no signal detected.    
6. Receiver sensitivity is compliant with power supply sinusoidal modulation of 20 Hz to 1.5 MHz up to specified value applied through the recommended power supply filtering network.

5.Electrical Input / Output Characteristics
Transmitter

Parameter		Symbol	Min.	Typ	Max.	Unit	Note
Diff. input voltage swing			120		820	mVpp	1
Tx Disable input	H	VIH	2.0		Vcc+0.3	V
	L	VIL	0		0.8
Tx Fault output	H	VOH	2.0		Vcc+0.3	V	2
	L	VOL	0		0.8
Input Diff. Impedance		Zin		100		Ω

Receiver

Parameter		Symbol	Min.	Typ	Max.	Unit	Note
Diff. output voltage swing			340	650	800	mVpp	3
Rx LOS Output	H	VOH	2.0		Vcc+0.3	V	2
	L	VOL	0		0.8

Remark:

1. TD+/- are internally AC coupled with 100Ω differential termination inside the module.
2. Tx Fault and Rx LOS are open collector outputs, which should be pulled up with 4.7k to 10kΩ resistors on the host board. Pull up voltage between 2.0V and Vcc+0.3V.
3. RD+/- outputs are internally AC coupled, and should be terminated with 100Ω (differential) at the user SERDES

6.Optical Characteristics
Transmitter

Parameter	Symbol	Min.	Typ	Max.	Unit	Note
Operating Wavelength	λC	1260	1310	1360	nm
Ave. output power (Enabled)	Po	-9		-3	dBm	1
Extinction Ratio	ER	10			dB	1
RMS spectral width	Δλ			4	nm
Rise/Fall time (20%~80%)	Tr/Tf			0.26	ps	2
Output Eye Mask	Telcordia GR-253-CORE and ITU-T G.957 compatible

Notes:

1. Measure at 2^23-1 NRZ PRBS pattern
2. Transmitter eye mask definition

Receiver

Parameter	Symbol	Min.	Typ	Max.	Unit	Note
Operating Wavelength		1470		1510	nm
Sensitivity	Psen			-22	dBm	1
Min. overload	Pimax	-3			dBm
LOS Assert	Pa	-36			dBm
LOS De-assert	Pd			-24	dBm	2
LOS Hysteresis	Pd-Pa	0.5		6	dB

Notes:

1. Measured with Light source 1310nm (1490nm), ER=10dB; BER =<10^-12 @PRBS=2^23-1 NRZ.
2. When LOS de-asserted, the RX data+/- output is signal output.

International Exhibitions:


Company:

Takfly Communications Co., Ltd,founded in 2000, which is a Hi-Tech enterprise having its own brand and specializing in R&D, manufacture and sales of fiber optical communications equipment. It controls the quality constantly and strictly in order to give the best products to the users.

  The main products of TAKFLY including MPO/MTP patch cord, CWDM/DWDM, fiber optic cable, patch cord, pigtail, adapter, PLC splitter, fast connector, attenuator, media converter, POE switch, optic splice closure, optic terminal box, ODF etc.

  Based on the conceptes" High Quality, Reasonable Price, Excellect Service and Mutual Benefit", TAKFLY is becoming a famous brand all over the world. Warmly welcome to be our business partner and let us help you to win more markets!

FQA :

1. Q: Are you a manufacturer?
A: yes, we are a manufacturer , FTTH solution and data center total solution provider in Shenzhen, China, established in 2000.

2. Q: What's your MOQ?
A: MOQ can be 1 pcs, but the price is not competitive.More quantity,the price will be more competitive.

3. Q: Can you quote FOB price?
A: yes. We can delivery by air, DHL, TNT, UPC, FEDEX, etc. For big quantity we will deliver it by sea.

We can quote price with freight and lead time for you, after you let us know detailed requirements with quantity.

We have competitive shipping forwarders. For more solutions, you can feel free to contact us.

4. Q: How is your quality?
A: Our production is according to IEC, Europe standard. CE, ISO, RoHS, CPR, and ANATEL certified.

All the products are 100% test before delivery.

5. Q: What's your lead time?
A: It depends on the quantity and products. For fiber optic patch cord, the lead time can be 2 -3 working days within 5000 pcs. We keep the regular products in stock. Also, we can deal with urgent orders.

6. Q: What's your warranty?
A: Depends one different product, we have1 years warranty for patch cord since delivery, but only responsible for non-artificial damage. For artificial damage, we can repair it for you for free, freight will be paid by your side.

7. Q: What's your packing?
A: International export standard package.If you need to print your logo on the packing, please let us know before we quote.

8. Q: Can you offer OEM/ODM?
A: yes, we can. all products accept OEM /ODM. we can sign the Confidentiality Agreement.

9. Q: Can I have a sample?
A: It depends on which products, Free sample provide under 10 usd. Freight will be paid by buyer before delivery.

10. Q: How can I order?
A:1.send mail or inquiries with product name, specification, and quantity  to us . Provide your receive address if you need FOB,CIF,CFR price.

2.We will offer our quotation with lead time.

3.After the quotation confirmed, we will send a PI with our bank account.

4.Production will be arranged after the payment received.

5.Confirm the consignee with you before we deliver it.

6.The tracking number will be provided after the delivery.

11. Q: What your payment term?
A: T/T, Western Union, Paypal, MoneyGram at once. For big amounts, can be 50% deposit in advance, 50% balance paid before delivery.