Product Overview
The SPT-P5503-160D is a 1550nm wavelength, 155Mb/s data rate, 150km transmission distance SFP optical transceiver module. This module supports DDM digital diagnostic monitoring functions, uses LC interface, and complies with SFF-8472 standard. Suitable for long-distance fiber optic communications, telecommunications networks, data transmission and other application scenarios.
Features
- SFP Package: Complies with SFP Multi-Source Agreement standard
- 155Mb/s Data Rate: Supports SONET/SDH standards
- 150km Transmission Distance: Meets long-distance transmission needs
- 1550nm Wavelength: DFB Laser
- LC Interface: Standard LC fiber optic connector
- DDM Digital Diagnostic Monitoring: Supports temperature, voltage, bias current, transmit power, receive power monitoring
- Class 1 Laser Safety: Complies with FDA/CDRH and EN(IEC)60825 standards
- RoHS Compliant: Complies with environmental standards
Absolute Maximum Ratings
| Parameter | Symbol | Min | Max | Unit |
| Supply Voltage | Vcc | -0.3 | 3.6 | V |
| Operating Temperature | TOP | 0 | 70 | °C |
| Storage Temperature | TST | -40 | 85 | °C |
| Soldering Temperature | TSOLD | - | 260 | °C |
Recommended Operating Conditions
| Parameter | Symbol | Min | Typ | Max | Unit |
| Supply Voltage | Vcc | 3.0 | 3.3 | 3.6 | V |
| Operating Temperature | TOP | 0 | 25 | 70 | °C |
Electrical Characteristics
| Parameter | Symbol | Min | Typ | Max | Unit |
| Supply Current | Icc | - | - | 300 | mA |
| Transmitter Input Differential Voltage | VIN | 200 | - | 1500 | mV |
| Receiver Output Differential Voltage | VOUT | 200 | - | 1500 | mV |
| TX Disable Voltage - High | TX_Dis | 2.0 | - | Vcc | V |
| TX Disable Voltage - Low | TX_Dis | 0 | - | 0.8 | V |
Optical Transmitter Characteristics
| Parameter | Symbol | Min | Typ | Max | Unit |
| Center Wavelength | λC | 1540 | 1550 | 1560 | nm |
| Spectral Width (RMS) | σ | - | - | 1 | nm |
| Average Transmit Power | PTX | -2 | - | 5 | dBm |
| Extinction Ratio | ER | 10 | - | - | dB |
| Optical Modulation Amplitude (OMA) | OMA | -3 | - | - | dBm |
| Transmitter Eye Mask | - | - | - | - | Complies with FC-PI 13.0 template |
Optical Receiver Characteristics
| Parameter | Symbol | Min | Typ | Max | Unit |
| Receiver Sensitivity | Sen | - | - | -33 | dBm |
| Receiver Reflectance | - | - | - | -12 | dB |
| LOS Assert | LOS | - | - | -45 | dBm |
| LOS Deassert | LOS | -36 | - | - | dBm |
| LOS Hysteresis | LOS | 0.5 | 2 | 2.5 | dB |
General Specifications
| Parameter | Symbol | Value | Unit |
| Data Rate | BR | 155 | Mb/s |
| Bit Error Rate | BER | 10⁻¹² | - |
| Max. Supported Link Length on 9/125μm SMF@155M | LMAX | 150 | km |
| Total System Budget | LB | 20 | dB |
Notes
- Also specified to meet curves in FC-PI 13.0 Figures 18 and 19 which allow trade-off between wavelength spectral widths
- Class 1 Laser Safety per FDA/CDRH and EN(IEC)60825 regulations
- Unfiltered 20-80%. Complies with IEEE 802.3(Gig.E)FC 1x and 2x eye masks when filtered
- Measured with conformance signals defined in FC-PI 13.0 specifications
- Measured with PRBS 2²³-1 at 10⁻¹² BER
- Dispersion limited per FC-PI Rev.13
- Attenuation of 1dB/km is used for the link length calculations. Distances are indicative only. Please refer to the Optical Specifications in Table IV to calculate a more accurate link budget based on specific conditions in your application
Pin Definitions
Diagram of Host Board Connector Block Pin Numbers and Names
| 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-DEF(2) | Module Definition 2 | 2 | 3 |
| 5 | MOD-DEF(1) | Module Definition 1 | 3 | 3 |
| 6 | MOD-DEF(0) | 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 | - |
Notes
- Circuit ground is internally isolated from chassis ground
- Laser output disabled on TDIS>2.0V or open, enabled on TDIS<0.8V
- Should be pulled up with 4.7k-10k ohms on host board to a voltage between 2.0V and 3.6V. MOD_DEF(0) pulls line low to indicate module is plugged in
- Rate select is not used
- LOS is open collector output. Should be pulled up with 4.7k-10k ohms on host board to a voltage between 2.0V and 3.6V. Logic 0 indicates normal operation; logic 1 indicates loss of signal
- AC Coupled
SFP Module EEPROM Information and Management
The SFP modules implement the 2-wire serial communication protocol as defined in the SFF-8472. The serial ID information of the SFP modules and Digital Diagnostic Monitor parameters can be accessed through the I²C interface at address A0h and A2h. The memory is mapped in Table 1. Detailed ID information (A0h) is listed in Table 2. And the DDM specification is at address A2h.
For more details of the memory map and byte definitions please refer to the SFF-8472 "Digital Diagnostic Monitoring Interface for Optical Transceivers". The DDM parameters have been internally calibrated.
Table 1. Digital Diagnostic Memory Map (Specific Data Field Descriptions)
| Data Address | Parameter | Accuracy | Unit | Calibration |
| 96-97 | Transceiver Internal Temperature | ±3.0 | °C | Internal |
| 98-99 | VCC3 Internal Supply Voltage | ±5.0 | % | Internal |
| 100-101 | Laser Bias Current | ±10 | % | Internal |
| 102-103 | Tx Output Power | ±3.0 | dBm | Internal |
| 104-105 | Rx Input Power | ±3.0 | dBm | Internal |
Table 2. EEPROM Serial ID Memory Contents (A0h)
| Data Address | Length (Byte) | Name of Field | 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 | SONET |
| 11 | 1 | Encoding | SONET Scrambled |
| 12 | 1 | BR Nominal | Nominal baud rate unit of 100Mbps |
| 13 | 1 | Reserved | (0000h) |
| 14 | 1 | Length (9um km) | Link length supported for 9/125um fiber units of km |
| 15 | 1 | Length (9um) | Link length supported for 9/125um fiber units of 100m |
| 16 | 1 | Length (50um) | Link length supported for 50/125um fiber units of 10m |
| 17 | 1 | Length (62.5um) | Link length supported for 62.5/125um fiber units of 10m |
| 18 | 1 | Length (Copper) | Link length supported for copper units of meters |
| 19 | 1 | Reserved | - |
| 20-35 | 16 | Vendor Name | SFP vendor name |
| 36 | 1 | Reserved | - |
| 37-39 | 3 | Vendor OUI | SFP transceiver vendor OUI ID |
| 40-55 | 16 | Vendor PN | Part Number: "SPT-P5503-160D" |
| 56-59 | 4 | Vendor rev | Revision level for part number |
| 60-61 | 2 | Wavelength | Laser wavelength |
| 62 | 1 | 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 | Manufacturing date code |
| 92 | 1 | Diagnostic Type | Diagnostics |
| 93 | 1 | Enhanced Options | Diagnostics |
| 94 | 1 | SFF-8472 | Diagnostics |
| 95 | 1 | CC EX | Check code for the extended ID Fields (addresses 64 to 94) |
| Vendor Specific ID Fields |
| 96-127 | 32 | Readable | Vendor specific data read only |
| 128-255 | 128 | Reserved | Reserved for SFF-8079 |
Regulatory Compliance
The transceiver complies with international Electromagnetic Compatibility (EMC) and international safety requirements and standards (see details in Table following).
| Standard | Description |
| Electrostatic Discharge (ESD) to the Electrical Pins | MIL-STD-883E Class 1(>1000V) Method 3015.7 |
| Electrostatic Discharge (ESD) to the Duplex LC Receptacle | IEC61000-4-2 Compatible with standards GR-1089-CORE |
| Electromagnetic Interference (EMI) | FCC Part 15 Class B EN55022 Class B(CISPR22B) VCCI Class B Compatible with standards |
| Laser Eye Safety | FDA 21CFR1040.10 and 1040.11 EN60950 EN(IEC)60825-1 Compatible with Class 1 laser product |
Regulatory Compliance Standards
- Small Form-factor Pluggable (SFP) Transceiver Multi-source Agreement (MSA) September 14 2000
- Bellcore GR-253 and ITU-T G.957 Specifications
Recommended Circuit & Mechanical Dimensions
SFP Host Recommended Circuit
Please refer to the SFP Host Recommended Circuit diagram
Mechanical Drawing
Please refer to the Mechanical Dimensions drawing

Ordering Information
| Part Number | Product Description |
| SPT-P5503-160D | 1550nm 155Mb/s 160km 0°C to 70°C |
| SPT-P5503-160TD | 1550nm 155Mb/s 160km -40°C to 85°C |
Contact Us
Email: info@sopto.com.cn
Web: http://www.sopto.com.cn
Note: If you need more customized services, please contact us.