Optical
Wavelength per bar, bar count and watts per bar. A 600 W listing may be 6 × 100 W at 808 nm, 12 × 50 W, or the 5 × 120 W HD lines. Mixed maps add 755 nm, 780 nm, 940 nm or 1064 nm bars. FAC, when stated, is part of the optical build.
Hangzhou SG Electronic Technology Co., Ltd.
Diode Laser Stacks for OEM and Replacement Projects
Hangzhou SG is a diode laser stack supplier for aesthetic laser equipment. Use this guide to specify an OEM diode laser stack, or to identify a replacement diode laser stack from the part that is already installed. Nominal watts are the start of the description, not the part number.
The public catalogs checked on 7 November 2026 group stacks at 600 W, 800 W, 1000 W, 1200 W and 2400 W. Inside each group the optical map, bar size, height and cooling interface still change. A driver and a handpiece built for one of those builds will not automatically accept another.
Select by optical, mechanical, electrical and cooling fit
Power is one published number. The catalogs show why it cannot stand alone. Two stacks can both be sold as 600 W or 800 W and still differ in wavelength, height, chip description and water path. Where a field was not published, this site leaves it unpublished.
Mechanical
Height and housing decide whether the stack sits in the handpiece. The 600 W configuration list gives 37 mm and 49 mm for two different 12 × 50 W models. Q2785 is published as a bare 1200 W module. Drawing size is not the same thing as a single caliper photo.
Electrical
Current, voltage, duty cycle, pulse width and repetition rate have to match the driver. In these catalogs that set is published for one 800 W SKU, HMA-808-50-16-D1. Those limits are coupled. They are not a template for the other stacks.
Cooling
Medium, temperature, pressure, flow and port position keep the bars inside their rating. Macro-channel water figures are published for HMA-808-50-16-D1. One 1000 W row notes dual-row rear water ports. Do not copy either detail onto a stack that does not state it.
Published stack families
Each card opens the configurations transcribed from that public catalog page. Prices are not repeated here. This site does not take payment and it does not show stock.
Catalog family600 W6 × 100 W, 12 × 50 W, and 5 × 120 W lines, including mixed wavelengths. Two models share the item code Y019.
Catalog family800 WThree documented SKUs, all 16 × 50 W. Only HMA-808-50-16-D1 publishes drive and cooling limits.
Catalog family1000 W10 × 100 W and 20 × 50 W text rows, with heights and port notes only where the catalog states them.
Catalog family1200 W12 × 100 W maps, plus the photographed Q2785 bare module at 808 nm. Drive data is not on that page.
Catalog family2400 W24 × 100 W listings, 808 nm and mixed 755 / 808 / 940 / 1064 nm maps. Commercial terms are left off this site.
How to chooseSelection guideA practical order for OEM builds and for replacement diode laser stack requests.
What this supplier page does not claim
Hangzhou SG Electronic Technology Co., Ltd. supplies diode laser stacks for aesthetic equipment. Chip names in the catalogs — including US Coherent, German Osram, and Chinese bars — describe the bars in those published listings. They are not a statement that SG manufactures those chips or holds that brand’s factory qualification.
No machine brand is listed here as a compatible host. If the catalog does not state a handpiece, connector or driver match, this site does not invent one. For a quotation, send the stack reference and your system details through the quote request page, by email or on WhatsApp.