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| Categories | SFP Optical Transceiver Module | 
|---|---|
| Brand Name: | E-link China | 
| Model Number: | LNK-SFP-4.25G-05 | 
| Certification: | CE, RoHS, FCC | 
| Place of Origin: | Shenzhen, China | 
| MOQ: | 1 piece | 
| Payment Terms: | T/T, Western Union, MoneyGram, Paypal | 
| Supply Ability: | 1000000000pcs/Month | 
| Delivery Time: | 3-5 working days | 
| Packaging Details: | 10 piece in 1 carton box | 
| Data Rate: | 4.25G | 
| Fiber Type: | MM | 
| Wavelength: | 850nm | 
| Distance: | 500 meters | 
| Fiber: | Dual Fiber | 
| Connector: | LC | 
| Price: | Negotiation | 
| Company Info. | 
| E-link China Technology Co., Ltd. | 
| Verified Supplier | 
| View Contact Details | 
| Product List | 
4.25G SFP Dual Fiber 500m Multimode SFP Optical Transceiver Module
Features
Applications
Description
The transceiver consists of three sections: a 850nm VCSEL 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 the Small Form Factor Pluggable Multi-Sourcing Agreement (MSA)1. They are compatible with Fiber Channel per FC-PI-2 Rev. 10.0. also simultaneously compatible with Gigabit Ethernet as specified in IEEE Std 802.3.
Absolute Maximum Ratings
Table 1 - Absolute Maximum Ratings
| Parameter | Symbol | Min | Max | Unit | 
| Power Supply Voltage | Vcc-Vee | 0 | 3.6 | V | 
| Operating Case Temperature (Commercial) | Tc | 0 | 70 | °C | 
| Operating Case Temperature (Industrial) | Tc | -40 | +85 | °C | 
| Storage Temperature | Ts | -40 | +85 | °C | 
| Operating Humidity | - | 5 | 90 | % | 
Recommended Operating Conditions
Table 2 - Recommended Operating Conditions
| Parameter | Symbol | Min | Typical | Max | Unit | |
| Operating Case Temperature | Standard | Tc | 0 | +70 | °C | |
| Power Supply Voltage | Vcc | 3.13 | 3.3 | 3.47 | V | |
| Power Supply Current | Icc | 240 | mA | |||
| Data Rate | 4.25 | Gbps | ||||
Optical and Electrical Characteristics
Table 3 - Optical and Electrical Characteristics
| Parameter | Symbol | Min | Typical | Max | Unit | Notes | ||
| Transmitter | ||||||||
| Date Rate | 4.25 | Gb/S | ||||||
| Centre Wavelength | λc | 830 | 860 | nm | ||||
| Spectral Width (RMS) | ∆λ | 1 | nm | |||||
| Average Output Power (BOL) | Pout | -9 | -2.5 | dBm | 1 | |||
| Extinction Ratio | ER | 5 | dB | |||||
| Average Launch Power-OFF Transmitter | Pout | -4.5 | dBm | |||||
| Optical Eye Diagram | Fiber Channel Compliant | |||||||
| Optical Rise/Fall Time(20%~80%) | tr/tf | 120 | ns | |||||
| Data Input Swing Differential | VIN | 300 | 1800 | mV | 2 | |||
| Input Differential Impedance | ZIN | 90 | 100 | 110 | Ω | |||
| TX Disable | Disable | 2.0 | Vcc | V | ||||
| Enable | 0 | 0.8 | V | |||||
| TX Fault | Fault | 2.0 | Vcc | V | ||||
| Normal | 0 | 0.8 | V | |||||
| Receiver | ||||||||
| Centre Wavelength | λc | 830 | 860 | nm | ||||
| Receiver Sensitivity (BOL) | -15 | dBm | 3 | |||||
| Receiver Overload | 0 | dBm | 3 | |||||
| LOS De-Assert | LOSD | -20 | dBm | |||||
| LOS Assert | LOSA | -25 | dBm | |||||
| LOS Hysteresis | 0.5 | 6 | dB | |||||
| Receiver Reflectance | -20 | dB | ||||||
| Data Output Swing Differential | Vout | 350 | 1800 | mV | 4 | |||
| Loss of Signal (LOS) Assert Time | TAssert | 500 | nS | |||||
| Loss of Signal (LOS) DeassertTime | TDeassert | 500 | nS | |||||
| LOS | High | 2.0 | Vcc | V | ||||
| Low | 0 | 0.8 | V | |||||
Notes:
1. The optical power is launched into MMF.
2. PECL input, internally AC-coupled and terminated.
3. Measured with a PRBS 27-1 test pattern @1250Mbps, BER ≤1×10-12
4. Internally AC-coupled.
Timing and Electrical
Table 4 - Timing and Electrical
| Parameter | Symbol | Min | Typical | Max | Unit | 
| Tx Disable Negate Time | t_on | 1 | ms | ||
| Tx Disable Assert Time | t_off | 10 | µs | ||
| Time To Initialize, including Reset of Tx Fault | t_init | 300 | ms | ||
| Tx Fault Assert Time | t_fault | 100 | µs | ||
| Tx Disable To Reset | t_reset | 10 | µs | ||
| LOS Assert Time | t_loss_on | 100 | µs | ||
| LOS De-assert Time | t_loss_off | 100 | µs | ||
| Serial ID Clock Rate | f_serial_clock | 400 | KHz | ||
| MOD_DEF (0:2)-High | VH | 2 | Vcc | V | |
| MOD_DEF (0:2)-Low | VL | 0.8 | V | 
Diagnostics
Table 5 – Diagnostics Specification
| Parameter | Range | Unit | Accuracy | Calibration | 
| Temperature | 0 to +70 | °C | ±3°C | Internal / External | 
| -40 to +85 | ||||
| Voltage | 3.0 to 3.6 | V | ±3% | Internal / External | 
| Bias Current | 0 to 100 | mA | ±10% | Internal / External | 
| TX Power | -9 to -3 | dBm | ±3dB | Internal / External | 
| RX Power | -23 to -3 | dBm | ±3dB | Internal / External | 
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