2.5G DFB in Coupler
Model Number: BLLD-PSA2-D5520H-2GR(TEC)
Brand Name: Belycomm
Mounting Type: universal type
Description: DFB Laser Coaxial Laser Module
Type: Laser Diode
- Product Introduction
Video Description
Key attributes
| Model Number | BLLD-PSA2-D5520H-2GR(TEC) |
| Place of Origin | Fujian, China |
| Package Type | Through Hole |
| Package / Case | Coaxial |
| Supplier Type | original manufacturer, ODM, agency, retailer |
Introduction
As a leading 2.5G DFB laser module manufacturer, Belycomm presents the BLLD-PSA2-D5520H-2GR(TEC) - a high-performance DFB coaxial laser diode designed for B2B bulk procurement. Ideal for optical transceivers and optical bidi modules, this 1550nm DFB laser module combines low noise, high reliability, and long operational life, making it a top choice for telecom equipment suppliers, data center integrators, and optical module manufacturers. Whether you need wholesale DFB laser modules for large-scale projects or custom ODM solutions, we support bulk orders with flexible pricing and timely delivery.
Packaging and delivery
| Selling Units | Single item |
| Single package size | 20X14X5.5 cm |
| Single gross weight | 0.500 KG |
| Quantity (pieces) | 1 - 100 | 101 - 1000 | 1001 - 10000 | > 10000 |
| Lead time (days) | 14 | 18 | 21 | To be negotiated |
Specification
Characteristics
- 1550nm Direct Modulation Transmitter featuring Cooled DFB-LD.
-
Delivers low-noise, low-distortion performance with low threshold current.
-
Integrated InGaAs/PIN monitoring photodiode.
-
Engineered for high reliability and extended operational lifespan
Application Scenarios
The 2.5G DFB laser module is widely used in:
-
2.5G SFP optical transceivers
-
FTTH (Fiber to the Home) optical bidi modules
-
Data center interconnect systems
-
Telecom equipment (compatible with mainstream brands like Huawei, ZTE)
Absolute Maximum Ratings (Tc=25℃)
|
Parameter |
Symbol |
Min |
Type |
Max |
Unit |
Notes |
|
Reverse Voltage(LD) |
Vr(LD) |
- |
- |
2 |
V |
CW |
|
Forward Current(LD) |
If(LD) |
- |
- |
100 |
mA |
CW |
|
Reverse Voltage(MPD) |
Vr(PD) |
- |
- |
15 |
V |
CW |
|
Forward Current(MPD) |
If(PD) |
- |
- |
2 |
mA |
|
|
Storage Temperature |
Tstg |
-40 |
- |
+85 |
℃ |
|
|
Operating Temperature |
Topr |
-20 |
- |
70 |
℃ |
|
|
Lead Soldering Temperature/Time |
Ts |
- |
260/10 or 360/5 |
- |
℃/S |
|
|
Fiber Bend Radius |
R |
30 |
- |
- |
mm |
Transmitter Optical and Electrical Characteristics
|
Parameter |
Symbol |
Min |
Type |
Max |
Unit |
Test Condition |
|
Threshold Current |
Ith |
3 |
- |
15 |
mA |
CW |
|
- |
- |
50 |
mA |
CW,T=85℃ |
||
|
Operating Voltage |
Vf |
- |
1.2 |
1.5 |
V |
- |
|
Optical Output Power |
Pf |
2.0 |
- |
3.0 |
mW |
CW, If=Ith+20mA |
|
Center Wavelength |
λ |
1540 |
1550 |
1560 |
nm |
|
|
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 |
15 |
PF |
VRD=5V, f=1MHz |
|
Dark Current |
Id |
- |
- |
100 |
nA |
VRD=5V |
|
Spectral Width(-3dB) |
Δλ |
- |
0.3 |
0.5 |
nm |
CW, If=Ith+20mA |
|
Slope Efficiency |
SE |
0.10 |
- |
- |
W/A |
CW, If=Ith+20mA |
|
Tracking Error |
TE |
-1.5 |
- |
1.5 |
dB |
CW, Im=Constant & |
|
Bandwidth |
BW |
- |
2.5 |
- |
GHz |
|
|
Side Mode |
SMSR |
30 |
- |
- |
dB |
CW, If= Ith+20mA |
|
Optical Isolation |
Iso |
30 |
- |
- |
dB |
- |
|
TEC |
Qmax |
- |
- |
0.6 |
W |
- |
|
Imax |
- |
- |
0.9 |
A |
- |
|
|
Vmax |
- |
- |
1.2 |
V |
- |
|
|
ΔT |
- |
40 |
- |
K |
- |
|
|
Thermistor Resistance |
Rth |
- |
9.9 |
- |
kΩ |
- |
|
Relative Intensity Noise |
RIN |
- |
- |
-130 |
dB/Hz |
- |
Outline Diagram and Pin Assignment
Order Information
Product Packaging
Company Profile
Quality management and patent certificates
FAQ
Q1:Are you a manufacturer or a trading company?
We are based in Fujian, China, start from 2004,sell to Domestic Market(40%),Northern Europe(10%),Eastern Europe(10%),Eastern Asia(6%),South Asia(5%),Southern Europe(5%),North America(5%),Central America(5%),Western Europe(5%),Mid East(5%),Southeast Asia(4%).
Q2:Why Choose Our 2.5G DFB Laser Module?
- Bulk Order Advantages: Enjoy exclusive discounts for wholesale DFB laser module purchases. Orders of 1000+ units qualify for preferential pricing, and long-term partners receive additional cost benefits.
-
Custom ODM Service: Need tailored specifications? Our R&D team supports custom wavelength, power, or connector adjustments (e.g., SC/APC, FC/UPC). Samples for customized requirements are available within 15 days.
-
Certified Quality: Compliant with RoHS standards and manufactured under ISO 9001 quality management systems, ensuring compatibility with global industry requirements.
-
High Production Capacity: With a monthly output of 50,000+ units, we handle large-scale 2.5G DFB bulk orders without delays, making us a trusted DFB laser procurement partner for global clients.
Q3:What is delivery time if we place an order?
A:It depends order quantities.Usually,we can deliver goods within 10-15 working days,for more QTY order,let's confirm when you place official order.
Q4:How to deal with the faulty?
A:Firstly,Our products are produced in strict quality control system and the defective rate will be less than 0.2% Secondly,during the guarantee period,we will check the problem and confirm the solution including re-call according to real situation.
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