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20km BiDi LC SMF SFP Transceiver Module , 1490nm / 1310nm 1000BASE-BX-D

Basic Information
Place of Origin: Shenzhen China
Brand Name: OLKOPTO
Certification: RoHS FCC CE GS UL FDA etc
Model Number: OLSB3412L-CD20
Minimum Order Quantity: 1pc
Packaging Details: Individual package Or 10pcs/pallet Or 20pcs/pallet
Delivery Time: 3-5 working days
Payment Terms: T/T or Net 30 days
Supply Ability: 80-120k per month
Data Rate: 1000Mbps Optical Components: DFB BiDi
Form Factor: SFP TX Power: -9~-3dBm
Compaticubility: Custom Wavelength: 1490nm/1310nm
Distance: 20km DDM/DOM: Supported
Warranty: 3 Years
High Light:

1490nm 1000BASE-BX-D




BiDi SFP Transceiver Module

1000BASE-BX-D BiDi SFP 1490nm/1310nm 20km DOM LC SMF Transceiver Module


Product Descriptions

The transceiver consists of three sections: a FP/DFB 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.


Absolute Maximum Ratings

Parameter Symbol Min. Max. Unit Note
Supply Voltage Vcc -0.5 4.0 V  
Storage Temperature TS -40 85 °C  
Relative Humidity RH 0 85 %  


Note: Stress in excess of the maximum absolute ratings can cause permanent damage to the transceiver.


General Operating Characteristics

Parameter Symbol Min. Typ Max. Unit Note
Data Rate DR   1.25   Gb/s  
Supply Voltage Vcc 3.13 3.3 3.47 V  
Supply Current Icc5     220 mA  
Operating Case Temp. Tc 0   70 °C  
TI -40   85  



Electrical Characteristics (TOP(C) = 0 to 70 , TOP(I) =-40 to 85 ,VCC = 3.13 to 3.47 V)

Parameter Symbol Min. Typ Max. Unit Note
Differential data input swing VIN,PP 120   820 mVpp 1
Tx Disable Input-High VIH 2.0   Vcc+0.3 V  
Tx Disable Input-Low VIL 0   0.8 V  
Tx Fault Output-High VOH 2.0   Vcc+0.3 V 2
Tx Fault Output-Low VOL 0   0.8 V 2
Input differential impedance Rin   100   Ω  
Differential data output swing Vout,pp 340 650 800 mVpp 3
Rx LOS Output-High VROH 2.0   Vcc+0.3 V 2
Rx LOS Output-Low VROL 0   0.8 V 2



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.


Product Features

1. 10G,8G,4G,3G,2.5G,1.25G,155m all rate

2. SFP+,XFP,SFP,SFF,CSFP,are customizable

3. Perfectly compatible with famous switch,ZTE HUAWEI etc

4. DDM

5. Choice from Single mode,muli-mode

6. Choice from dual fiber LC,single fiber SC/LC

7. Low power consumption and high sensitivily

8. Programmable of no light alarm function

9. Complying with ROHS standard

10. The working temperature is up from -40c to ~+85c

11. Complying with Class 1 Laser,and the requirements of IEC60825-1

12. The label can be customized according to customer’s requirements

13. The excellent characteristic of overclocking



● Gigabit Ethernet

● Fiber Channel

● Switch to Switch interface

● Switched backplane applications

● Router/Server interface

● Other Optical Links



Q1: How can I get your catalogue and price list?

A1: Please let us know your email or contact us from website directly for our catalogue and price list;

Q2: Can I negotiate the prices?

A2: Yes, we may consider discounts for multiple container load of mixed goods.

Q3: How much will the shipping charges be?

A3: It depends on the size of your shipment and the method of shipping.

We will offer the charge to you as you requested.

Contact Details

Phone Number : 008618695187695

WhatsApp : +8618695187695