We are all QSI laser diodes, which have already occupied a very large market share in the industry. So many people still cannot find the price of QSI laser diodes? Where can I buy QSI laser diodes? Let me give you a brief introduction below!

The price of QSI laser diodes is closely related to parameters such as model, wavelength, output power, packaging form, and the presence or absence of PD/single-mode/multi-mode. Here are some price information I have compiled, including where to buy it and suggestions for selecting/saving. If you provide specific models (such as QL63D4SA), I can give a more accurate quote.

1、 Market approximate price

QSI QL63D4SA/B/C, 635nm, 5mW, TO-18 package red light 5mW ≈ US $6

QSI 20mW, 635nm, TO-18 red light 20mW * * ≈ US $19

QSI QL65I7SA/C, 658nm, 30mW red light 30mW ≈ US $9.8

2、 Where to buy in China

Here are some possible channels:

Online electronic component suppliers: such as Alibaba (Longxingda Technology) Made-in-China， Or a professional optoelectronic device mall with many QSI models available

3、 Price fluctuation factors&buying precautions

Please note that these factors will significantly affect prices:

1. Power size: The higher the power, the higher the cost, and the price usually increases exponentially.

2. Wavelength&wavelength stability/single-mode vs multi-mode: LDs with special wavelengths or requiring high beam quality/single-mode will be much more expensive.

3. Packaging form: TO-18/TO-5/TO with PD form/modular/with cooling/heat dissipation structure, etc. will all incur additional charges.

4. Does it have a photoelectric monitoring PD (monitor photodiode) or APC (automatic power control) function. People with PD are more expensive than those without PD.

5. Quantity/Batch Purchase: Large batches usually have much lower unit prices.

6. Import taxes/shipping fees/tariffs: If purchased from abroad, transportation and tariff costs must be added.

The above is about the price of QSI laser diodes and where to buy them. Generally speaking, the price of QSI still depends on the customer's usage situation, and different products have different prices.