Kexint 9db 10db Class C++++ 1.25g Gpon Olt SFP 20km Optical Transceiver 1490nm 1310nm Sc Connector

Product Description

Products Description

The KEXINT GPON OLT SFP Class C++++ is a high-performance, high-power optical transceiver module specifically engineered for Point-to-Multipoint (P2MP) Passive Optical Network (GPON) applications. Operating at a downstream rate of 2.488Gbps and an upstream rate of 1.244Gbps, this module provides the extra optical power budget (9dB to 10dB) required for long-distance transmissions and high-ratio splitting in modern FTTx infrastructures.

Designed by KEXINT with reliability at its core, this module is hot-pluggable and fully compliant with ITU-T G.984.x standards, making it the ideal choice for service providers looking to enhance their network reach and stability.

Product Highlight

1. Extreme Optical Power Budget (Class C++++): Unlike standard B+ or C+ modules, the C++++ grade offers an industry-leading output power of 9dBm to 10dBm. This allows for a higher split ratio (e.g., 1:128) and overcomes significant signal loss in complex aging fiber plants.
2. High-Quality Imported Chipset: Built with premium imported core chips to ensure ultra-low power consumption and exceptional signal stability even during peak data traffic.
3. Superior Hardware Construction:
* Zinc Alloy Housing: Features a strong and durable zinc alloy shell that provides superior electromagnetic interference (EMI) shielding and highly efficient heat dissipation.
* Electroplated Hard Gold Pins: The "Golden Finger" uses advanced plug-in electroplating hard gold. This perfect combination of circuit components reduces contact resistance and significantly lowers the operating temperature of the module.
4. Intelligent Monitoring (DDM): Supports Digital Diagnostic Monitoring (DDM) according to SFF-8472, allowing real-time tracking of parameters like temperature, voltage, laser bias current, and transmit/receive optical power.
5. Ultra-Long Transmission: Guaranteed stable 20km transmission over Single Mode Fiber (SMF), satisfying the needs of both urban and rural FTTH deployments.

Features

1. Single-Fiber Bi-Directional: Adopts a single SC interface design using WDM technology (Tx 1490nm / Rx 1310nm) to save fiber resources.
2. Hot-Pluggable SFP Form Factor: Allows for installation or replacement without powering down the OLT equipment, minimizing network downtime.
3. Broad Compatibility: Tested for seamless integration with major OLT brands (Huawei, ZTE, Nokia, etc.) and compatible with fiber types including G.652D, G.657A1, G.657A2.
4. Burst-Mode Receiver: Specifically designed for the TDMA upstream characteristic of GPON networks, ensuring fast and accurate data capture from multiple ONUs.
5. Industrial Durability: Supports a wide storage temperature range of -40°C to +85°C and a standard operating range of 0°C to 70°C.
6. Compliance: Fully compliant with MSA SFP specifications and ITU-T G.984.2 standards. CE, ISO, and RoHS certified.

Application

1. FTTH / FTTX Access Networks: The primary application for connecting Central Office OLTs to end-user ONTs/ONUs via Passive Optical Splitters.
2. Gigabit Ethernet Services: Providing high-speed broadband backhaul for residential and commercial areas.
3. Fiber Channel & Storage Networks: Reliable data link for high-throughput storage area networks.
4. Switch-to-Switch Interfaces: Extending the reach between network switches in large campus or metropolitan networks.
5. Router & Server Connectivity: High-density optical interconnection for data center servers and high-end routers.
6. Switched Backplane Applications: Ideal for high-speed internal communication within modular chassis systems.

Specification

Parameter	Symbol	Min.	Min.	Unit
Storage Temperature	Ts	-40	+85	ºC
Operating Temperature	Top	0	+70	ºC
Supply Voltage	Vcc	-0.5	+3.6	ºC
Power Supply Current	Icc	-	400	ºC
Voltage at any Input Pin	VIN	0	VCC	ºC

Gigabit Ethernet Passive Optical Networks (GPON CLASS C+++)-OLT side

Recommended Operating Conditions:

Parameter	Symbol	Min.	TyP	Max.	Unit
Operating Temperature	Top	0	-	+70	ºC
Supply Voltage	Vcc	3.1	3.3	3.5	V
Tx Data Rate	-	-	2488	-	Mb/s
Rx Data Rate	-	-	1244	-	Mb/s

The SFP serial ID provides access to sophisticated identification information that describes thetransceiver's capabilities, standard interfaces, manufacturer, and other information. The serialinterface uses the 2-wire serial CMOS E'PROM protocol defined for the ATMELAT24C01A/02/04 family of components.
When the serial protocol is activated, the host generates the serial clock signal (SCL, Mod Def1). The positive edge clocks data into those segments of the E²PROM that are notwrite-protected within the SFP transceiver. The negative edge clocks data from the SFptransceiver.
The serial data signal (SDA, Mod Def 2) is bi-directional for serial data transfer. The host usesSDA in conjunction with SCL to mark the start and end of serial protocol activation. Thememories are organized as a series of 8-bit data words that can be addressed individually orsequentially.

Monitoring InterfaceThe interface is an extension of the serial ID interface defined in the SFP MSA specificationThe specifications define a 256 byte memory map in E~PROM which is accessible over a 2wire serial interface at the 8 bit address 1010000X (A0h). The digital diagnostic monitoringinterface makes use of the 8 bit address 1010001X (A2h), so the originally defined serial IDmemory map remains unchanged. The interface is backward compatible with both the GBICspecification and the SFP MSA. 

Note requirements:1. TX Fault is an open collector output, which should be pulled up with a 4.7K~10KI resistoron 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 lessthan 0.8V.
2. TX Disable is an input that is used to shut down the transmitter optical output. It is pulled upwithin the module with a 4.7K~10K resistor. Its states are:Low (0_0.8V): Transmitter on
(>0.8V,<2.0V): Undefined
High (2.0~3.465V): Transmitter Disabled
Open: Transmitter Disabled.
3. MOD-DEF 0,1,2 are the module definition pins. They should be pulled up with a4.7K~10K 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 presentMOD-DEF 1 is the clock line of two wire serial interface for serial IDMOD-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~10K resistor onthe host board to a voltage between 2.0V and Vcc+0.3V. Logic 0 indicates normal operation:logic 1 indicates loss of signal. In the low state, the output will be pulled to less than 0.8V.
5. These are the differential receiver outputs. They are AC coupled 1001 differential lineswhich should be terminated with 1009 (differential) at the user SERDES.
6. These are the differential transmitter inputs. They are AC-coupled, differential lines with1002 differential termination inside the module.

SFP Host PCB Mechanical Layout

 Mechanical (Units in mm)

Packaging & Shipping

 

Company Profile

FAQ

Q1. Are you a trading company or manufacturer?
A1. We are professional supplier. We are not only a trading company but also a manufacturer. Our factory name is Comelink co.,LTD
 
Q2. What are your main products?
A2. Our products cover mainstream brands of OLT and PON cards, ONT ONUs, enterprise switches, optical modules and OEM ODN equipment.
 
Q3. Do ONT ONU products provide customized services?
A3. Yes, we can customize your logo, company information, pre-configuration, packaging box, etc.

Q4. What is your delivery time?
A4. Usually we can ship within 1-3 days for small quantity, and about 15-20 days for large quantity.

Q5. What are your payment terms?
A5. Alipay, T/T, Western Union and Paypal. This is negotiable.

Q6. What is the shipping method?
A6. Shipping by sea, air or express (EMS, UPS, DHL, TNT, FEDEX, etc.).
 
Q7. For OLT, how to ensure quality?
A7. We conduct strict testing before shipment to ensure the goods are available, and electronic reports will also be shared with you. In addition, we also provide one-year warranty and technical service.

Q8. How do you make our business a long-term and great relationship?
A8. We maintain good quality and competitive prices to ensure our customers benefit;  We respect every customer as our friend, and we sincerely do business and make friends with them, no matter where they come from.
 
Q9. Is there a minimum order quantity?
A9. No, a test sample is also available.