2.5G 1270-1610nm CWDM DFB Laser
Model Number: DFB-2.5G-1310-A
Brand Name: Belycomm
Mounting Type: others
Description: Coaxial laser diode
Type: Laser Diode
- Product Introduction
Video Description
Core Attributes
| Model Number | DFB-2.5G-1310-A |
| Brand | Belycomm |
| Type | Laser Diode (DFB type) |
| Package | 5.6mm TO-CAN coaxial package, surface mount |
| Origin | Fujian, China |
| Fiber type | SM G657A |
Package and Lead time
- Flexible Packaging: Standard carton tape packaging.
- Lead Time:
1-100 Pcs : About 14 Days
101-1000 Pcs : About 26 Days
1001-10000 Pcs : About 35 Days
>10000 Pcs : To be negotiated
Products Description
Features
- Exceptional Side-Mode-Suppression Ratio: Effectively suppresses spurious modes to ensure high purity and stability of output signals, meeting the requirements of high-precision transmission and detection scenarios.
- High Power Output Over a Wide Temperature Range: Maintains stable high-power performance within a broad temperature range (e.g., industrial grade -40℃ to +85℃), adapting to complex and harsh working environments.
- 5.6mm TO-CAN Package: Utilizes the industry-standard 5.6mm TO-CAN metal package, featuring excellent sealing, thermal conductivity, and anti-electromagnetic interference capabilities.
- High Reliability and Long Service Life: Undergoes rigorous production processes and reliability tests (such as high-temperature high-humidity and thermal shock tests), resulting in low device failure rates.
Applications
- Telecommunication refers to the transmission of information over significant distances using various technologies, encompassing voice, video, and data signals through mediums like wires, radio waves, or optical fibers.
- Data Communication specifically focuses on the exchange of digital data between devices, systems, or locations, relying on protocols and networks to ensure accurate and efficient transfer of information in formats such as text, images, or files.
- Storage Area Networks (SANs) are specialized high-speed networks that connect and provide access to centralized storage resources, enabling multiple servers to share storage devices like disk arrays, enhancing data management and accessibility.
Product Specifications
Absolute Maximum Ratings (Tc=25℃)
| Parameter | Symbol | Ratings | Unit | Notes |
| Reverse Voltage(LD) | Vr(LD) | 2 | V | CW |
| Forward Current(LD) | If(LD) | 120 | mA | CW |
| Reverse Voltage(MPD) | Vr(PD) | 15 | V | CW |
| Forward Current(MPD) | If(PD) | 2 | mA | CW |
| Storage Temperature | Tstg | -40~+85 | ℃ | - |
| Operating Temperature | Topr | -20~+70 | ℃ | |
| Lead Soldering Temperature/Time | Ts | 260/10 | ℃/S | - |
Transmitter Optical and Electrical Characteristics (Tc=25℃)
| Parameter | Symbol | Min. | Type | Max. | Unit | Test Condition |
| Threshold Current | Ith | 3 | - | 15 | mA | CW |
| - | - | 50 | mA | CW,T=70℃ | ||
| Operating Voltage | Vf | - | 1.1 | 1.5 | V | |
| Optical Output Power | Pf | 6 | 7 | - | mW | CW, If=Ith+20mA |
| Center Wavelength | λc | 1307 | 1310 | 1313 | nm | CW, If=Ith+20mA |
| Rise/Fall Time(20-80%) | Tr/Tf | - | - | 120 | pS | If=Ith, Po=Pf, 50 Ohm |
| Monitor Current | Im | 100 | - | 1000 | uA | CW, If=Ith+20mA |
| Capacitance | C | - | 10 | 20 | PF | VRD=5V, f=1MHz |
| Dark Current | Id | - | - | 100 | nA | VRD=5V |
| Spectral Width(-3dB) | Δλ | - | 0.3 | 1 | nm | CW, P0 = Pf |
| Slope Efficiency | SE | 0.3 | 0.35 | - | W/A | CW, P0 = Pf |
| Side Mode Suppression Ratio | SMSR | 30 | 35 | - | dB | CW, P0 = Pf |
| Relaxation Oscillation Frequency | FR | 1.5 | 2.5 | - | GHz | |
| Parallel divergence Angle | // | - | 27 | 29 | Deg | |
| Perpendicular divergence Angle | ⊥ | - | 30 | 38 | Deg | |
| Focus length | F | 7.2 | 7.5 | 7.8 | mm | Aspherical lens cap |

Order Information
| DFB-2.5G-1310-A | ||||||
| X | -X | -X | -X | -X | -X | (X) |
| LD Type | Frequency | Wavelength | Pin Assignment | Package Type | Focal length | Note |
|
FP DFB |
1.25G 2.5G 3.6G 6G 10G |
1270nm 1290nm …… 1610nm 1625nm 1650nm |
A: Type A B: Type B C: Type C F: Type F N: Type N |
Aspherical Lens Cap Flat Window Large Ball Small Ball Tube Cap |
7.5 …… 6.7 6.3 10.1 |
|
Package

Exhibition



FAQ
Q: Are licenses required for this laser diode?
A: Licenses are required for manufacturing, selling, or using Class 3b/4 lasers (including systems embedding them). Our diodes comply with international classification standards.
Q: How is the laser classified?
A: Classification reflects hazard level - higher classes indicate greater power. Our 2.5G CWDM DFB laser is classified based on output power, with details in the full datasheet.
Q: How long does the Laser Diode (LD) last?
A: The LD lasts for approximately 50,000 hours at 40°C with failure rate of 10%.
It lasts for approximately 100,000 hours at normal temperature (Approx. 25°C).
Q: Do you provide technical support for bulk integration?
A: Yes, our engineering team offers pre-integration consulting and post-delivery troubleshooting for large orders.
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