| Customization: | Available |
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| Type: | Gepon Ont ONU |
| Certification: | ISO9001 |
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COME-SFP-GE-LX-B20 high performance, cost-effective 1.25G BiDi SFP transceiver complies with the Small Form Factor Pluggable Multi-Sourcing Agreement (MSA). It provides Digital diagnostics functions via a 2-wire serial interface as specified in SFF-8472. It adopts high-performance FP/DFB transmitter and high-sensitivity PIN receiver, provides up to 14dB link budge for Gigabit Ethernet applications up to 20km on a single core single mode fiber.
1. Up to 1.25Gb/s Data Links
2. Hot-Pluggable
3. Simplex LC connector; SC optional
4. 1310nm FP or 1490/1550nm DFB transmitter, PIN photo-detector
5. 20km on a single-core SMF
6.2-wire interface for management specifications compliant with SFF 8472 digital diagnostic monitoring interface
7. Power Supply:+3.3V
8. Power consumption<1W
9. Temperature Range: 0~ 70°C, -40°C to 85°C/-5°C to 85°C available
10. RoHS compliant
1. 1000Base-LX Ethernet
2. Metro/Access Networks
3. 1G Fibre Channel
4. Other Optical Links
| Part Number | Data Rate | Distance | Wavelength | Laser | Fiber | DDM | Connector |
| COME-SFP-GE-B20-35 | 1.25Gb/s | 20km | TX1310nm/RX1550nm | FP/PIN | SM | Yes | Simplex LC |
| COME-SFP-GE-B20-53 | 1.25Gb/s | 20km | TX1550nm/RX1310nm | DFB/PIN | SM | Yes | Simplex LC |
| COME-SFP-GE-B20-35-SC | 1.25Gb/s | 20km | TX1310nm/RX1550nm | FP/PIN | SM | Yes | Simplex SC |
| COME-SFP-GE-B20-53-SC | 1.25Gb/s | 20km | TX1550nm/RX1310nm | DFB/PIN | SM | Yes | Simplex SC |
| COME-SFP-GE-B20-34 | 1.25Gb/s | 20km | TX1310nm/RX1490nm | FP/PIN | SM | Yes | Simplex LC |
| COME-SFP-GE-B20-43 | 1.25Gb/s | 20km | TX1490nm/RX1310nm | DFB/PIN | SM | Yes | Simplex LC |
| COME-SFP-GE-B20-34-SC | 1.25Gb/s | 20km | TX1310nm/RX1490nm | FP/PIN | SM | Yes | Simplex SC |
| COME-SFP-GE-B20-43-SC | 1.25Gb/s | 20km | TX1490nm/RX1310nm | DFB/PIN | SM | Yes | Simplex SC |
| Parameter | Symbol | Min. | Typical | Max. | Unit |
| StorageTemperature | TS | -40 | +85 | °C | |
| SupplyVoltage | VCCT, R | -0.5 | 4 | V | |
| RelativeHumidity | RH | 0 | 85 | % |
| Parameter | Symbol | Min. | Typical | Max. | Unit | |
| CaseoperatingTemperature | Industrial | TC | -40 | 85 | °C | |
| Extended | -5 | 85 | °C | |||
| Commercial | 0 | +70 | °C | |||
| SupplyVoltage | VCC | 3.135 | 3.465 | V | ||
| Supply Current | Icc | 300 | mA | |||
| Inrush Current | Isurge | Icc+30 | mA | |||
| Maximum Power | Pmax | 1 | W | |||
| Parameter | Symbol | Min. | Typical | Max. | Unit | Note |
| Transmitter Section: | ||||||
| Input differential impedance | Rin | 90 | 100 | 110 | ||
| Single ended data input swing | Vin PP | 250 | 1200 | mVp-p | ||
| Transmit Disable Voltage | VD | Vcc - 1.3 | Vcc | V | 2 | |
| Transmit Enable Voltage | VEN | Vee | Vee+ 0.8 | V | ||
| Transmit Disable Assert Time | Tdessert | 10 | us | |||
| Receiver Section: | ||||||
| Single ended data output swing | Vout,pp | 300 | 800 | mv | 3 | |
| LOS Fault | Vlosfault | Vcc - 0.5 | VCC_host | V | 5 | |
| LOS Normal | Vlos norm | Vee | Vee+0.5 | V | 5 | |
| Power Supply Rejection | PSR | 100 | mVpp | 6 | ||
| Parameter | Symbol | Min. | Typical | Max. | Unit | Note | |
| Transmitter Section: | |||||||
| Center Wavelength | COME-SFP-GE-B20-35 | λc | 1290 | 1310 | 1330 | nm | |
| COME-SFP-GE-B20-34 | 1290 | 1310 | 1330 | ||||
| COME-SFP-GE-B20-53 | 1530 | 1550 | 1570 | ||||
| COME-GE-B20-43 | 1470 | 1490 | 1510 | ||||
| Spectral Width(RMS) | σRMS | 4 | nm | ||||
| Optical Output Power | Pout | -9 | -3 | dBm | 1 | ||
| Extinction Ratio | ER | 9 | dB | ||||
| Optical Rise/Fall Time | tr / tf | 260 | ps | 2 | |||
| Relative Intensity Noise | RIN | -120 | dB/Hz | ||||
| Total Jitter Contribution | TXΔ TJ | 0.284 | UI | 3 | |||
| Eye Mask for Optical Output | Compliant with IEEE802.3 z (class 1 laser safety) | ||||||
| Receiver Section: | |||||||
| Optical Input Wavelength | COME-SFP-GE-B20-35 | λc | 1530 | 1550 | 1570 | nm | |
| COME-SFP-GE-B20-34 | 1470 | 1490 | 1510 | ||||
| COME-SFP-GE-B20-53 | 1290 | 1310 | 1330 | ||||
| COME-SFP-GE-B20-43 | 1290 | 1310 | 1330 | ||||
| ReceiverOverload | Pol | -3 | dBm | 4 | |||
| RXSensitivity | Sen | -23 | dBm | 4 | |||
| RX_LOS Assert | LOS A | -35 | dBm | ||||
| RX_LOS De-assert | LOS D | -25 | dBm | ||||
| RX_LOS Hysteresis | LOS H | 0.5 | dB | ||||
| General Specifications: | |||||||
| Data Rate | BR | 1.25 | Gb/s | ||||
| Bit Error Rate | BER | 10-12 | |||||
| Max. Supported Link Length on 9/125μm [email protected]/s | LMAX | 20 | km | ||||
| Total System Budget | LB | 14 | dB | ||||
| Pin No | Name | Function | Plug Seq | Notes |
| 1 | VeeT | Transmitter Ground | 1 | 1 |
| 2 | TX Fault | Transmitter Fault Indication | 3 | |
| 3 | TX Disable | Transmitter Disable | 3 | 2 |
| 4 | MOD-DEF2 | Module Definition | 2 | 3 |
| 5 | MOD-DEF1 | Module Definition 1 | 3 | 3 |
| 6 | MOD-DEF0 | Module Definition 0 | 3 | 3 |
| 7 | Rate Select | Not Connected | 3 | 4 |
| 8 | LOS | Loss of Signal | 3 | 5 |
| 9 | VeeR | Receiver Ground | 1 | 1 |
| 10 | VeeR | Receiver Ground | 1 | 1 |
| 11 | VeeR | Receiver Ground | 1 | |
| 12 | RD- | Inv. Received Data Out | 3 | 6 |
| 13 | RD+ | Received Data Out | 3 | 6 |
| 14 | VeeR | Receiver Ground | 3 | 1 |
| 15 | VccR | Receiver Power | 2 | 1 |
| 16 | VccT | Transmitter Power | 2 | |
| 17 | VeeT | Transmitter Ground | 1 | |
| 18 | TD+ | Transmit Data In | 3 | 6 |
| 19 | TD- | Inv. Transmit In | 3 | 6 |
| 20 | VeeT | Transmitter Ground | 1 |
| Data Address | Length (Byte) |
Name of Length |
Description and Contents |
| Base ID Fields | |||
| 0 | 1 | Identifier | Type of Serial transceiver (03h=SFP) |
| 1 | 1 | Reserved | Extended identifier of type serial transceiver (04h) |
| 2 | 1 | Connector | Code of optical connector type (07=LC) |
| 3-10 | 8 | Transceiver | |
| 11 | 1 | Encoding | NRZ(03h) |
| 12 | 1 | BR, Nominal | Nominal baud rate, unit of 100Mbps |
| 13-14 | 2 | Reserved | (0000h) |
| 15 | 1 | Length(9um) | Link length supported for 9/125um fiber, units of100m |
| 16 | 1 | Length(50um) | Link length supported for 50/125um fiber, units of10m |
| 17 | 1 | Length(62.5um) | Link length supported for 62.5/125um fiber, units of10m |
| 18 | 1 | Length(Copper) | Link length supported for copper, units of meters |
| 19 | 1 | Reserved | |
| 20-35 | 16 | Vendor Name | SFP vendor name: COMELINK |
| 36 | 1 | Reserved | |
| 37-39 | 3 | Vendor OUI | SFP transceiver vendor OUI ID |
| 40-55 | 16 | Vendor PN | Part Number: "COME-SFP-GE-B20-xx" (ASCII) |
| 56-59 | 4 | Vendor rev | Revision level for part number |
| 60-62 | 3 | Reserved | |
| 63 | 1 | CCID | Least significant byte of sum of data in address 0-62 |
| Extended ID Fields | |||
| 64-65 | 2 | Option | Indicates which optical SFP signals are implemented (001Ah = LOS, TX_FAULT, TX_DISABLE all supported) |
| 66 | 1 | BR, max | Upper bit rate margin, units of % |
| 67 | 1 | BR, min | Lower bit rate margin, units of % |
| 68-83 | 16 | Vendor SN | Serial number (ASCII) |
| 84-91 | 8 | Date code | COMELINK's Manufacturing date code |
| 92-94 | 3 | Reserved | |
| 95 | 1 | CCEX | Check code for the extended ID Fields (addresses 64 to 94) |
| Vendor Specific ID Fields | |||
| 96-127 | 32 | Readable | COMELINK specific date, read only |
| 128-255 | 128 | Reserved | Reserved for SFF-8079 |
| Data Address | Parameter | Accuracy | Unit |
| 96-97 | Transceiver Internal Temperature | ±3.0 | °C |
| 100-101 | Laser Bias Current | ±10 | % |
| 100-101 | Tx Output Power | ±3.0 | dBm |
| 100-101 | Rx Input Power | ±3.0 | dBm |
| 100-101 | VCC3 Internal Supply Voltage | ±3.0 | % |
| Electrostatic Discharge (ESD) to the Electrical Pins |
MIL-STD-883E Method 3015.7 |
Class 1(>1000 V) |
| Electrostatic Discharge (ESD) to the Single LC Receptacle |
IEC 61000-4-2 GR-1089-CORE |
Compatible with standards |
| Electromagnetic Interference (EMI) |
FCC Part 15 Class B EN55022 Class B (CISPR 22B) VCCI Class B |
Compatible with standards |
| Laser Eye Safety | FDA 21CFR 1040.10 and 1040.11 EN60950, EN (IEC) 60825-1,2 |
Compatible with Class 1 laser product. |
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