Osram PL520B 80mW 520nm Direct Green 3.8mm Laser Diode
Listing is for a single new 3.8mm Osram PL520B 80mW 520nm single mode laser diode. Don’t attempt to connect the diode directly to a fixed voltage source like a battery. The diode requires a proper laser driver to operate. For drop in ready units that have the diode in modules with the driver installed and glass lens see my other PL520B listings There are many other proper laser drivers but be careful a lot of sellers here are offering LED drivers as a laser driver which can damage or cause shortened life to the laser diode. LED drivers are not laser drivers. LED’s are tough as nails but laser diodes are much more sensitive and need extra features like soft start, overshoot protection and a very low noise output that are standard on laser drivers but not included on LED drivers to save cost since they are not necessary when driving a LED. I have seen a a few tutorials for building a “cheap laser” with this LED driver but it is a bad idea as I see it causing a lot of diode deaths and any build using it will have reduced life or even risk immediate damage to the laser diode. Also this LED driver and variants of it have been popular here and are causing a lot of damage. See this LED Driver Scope Test on it. Please do your homework or shoot me a message if confused by the many offerings of “cheap drivers” as risking an expensive diode to save on a bargain driver is just not worth it. If you do use a LED driver you do so at your own risk. Diode should be properly heatsinked and driven with a laser driver set to a no more than 300mA. Osram PL520B 520nm Laser Diode*Disclamer* By purchasing these diodes you are agreeing to the following. – You are over 18 years of age . – You understand that these components that are mentioned above are dangerous when not properly assembled into a finished product. – You will use these as components and properly incorporate them into a finished product. – You will use these diodes/modules in a safe and responsible manner and for a legal purpose. – You are legally responsible for the use of these components, improper use of these components or their end products. – You are legally responsible for any injury to anybody resulting from the use of or assembly of these components or their finished products. – You Accept this diode/module as a COMPONENT for integration in a system of YOUR OWN design and will be legally responsible from any and all LIABILITIES These Diodes and Modules are sold solely as a component for incorporation into the customer’s end products. Therefore, this diode/module is exempt from compliance with the appropriate requirements of FDA 21CFR, section 1040.10 and 1040.11 for complete products.
12mm Copper Laser Diode Mount Blank Modules – 3.8mm – 5.6mm – 9mm – DTR-CLMV5-12
12mm DTR Copper Laser Modules V5 for 3.8mm, 5.6mm and 9mm laser diodes.DTR-CLMV5-12 12mm laser modules are a common standard for laser DIY and countess end products like CNC, lightshow, 3d printers, ect… that incorporate diode based lasers as a component of the system. It makes a quick straightforward way to install and remove for service by using a receiver mount that for the module that also serves as a heastink with some with angle adjustment for cusom alignment before locking it in place. The standard for 12mm laser modules calls for a 0.05mm under size @ 11.95mm paired with a heatsink milled with a boar of 12.00mm and both module and heatsink heed to have at least a +/-0.01mm tolerance for a proper perfect fit if it uses a set screw to secure the module. Greater than a 0.07mm difference will have thermal contact issues with the set screw types and less than 0.03mm will be an interference fit require pressing in which makes it very hard to remove if service or change out is required. A clamp style is the best option for proper thermal contact all the way around the module like the Z-Bolt heatsinks for 12mm laser modules or a SK-12 aluminum rail mount. These modules are precision machined to meet the 12mm common standard with a 12mm(11.95mm)X30mm and a +/-0.01mm tolerance out fine copper C1100 which is the highest grade of copper at 99.9% pure. These modules were originally designed as a cooperative effort by a forum community to deal with tolerance issues with clones of the older Axiz designed 12mm plated brass modules being widely sold at the time. These units large variation in tolerances for the outer diameter as extreme as 11.80mm to 12.10mm causing issues using heatsinks using the standard 12.00mm boar where the to be in proper spec the module is undersized by 0.05mm as less would be an interference fit requiring pressing the module in. If the module is too small there will be poor thermal contact which can cause the laser to overheat and die or run hot and degrade at an accelerated rate. Also brass was just not efficient enough for higher power diodes that were starting to become available. They bottle necked and just could not dissipate heat to the sink as fast as it is created. Thermal transfer is very important and having high quality copper and good tolerances is very important to the proper operation of high power laser didoes. Note on new clones of these modules being offered usually refereed to as “Red Copper” In China brass commonly is commonly refereed to as copper unless specified noting a grade of actual copper and the term “Red Copper” is now being used to note that it is copper and not brass which is a mix of copper and zinc usually around a 60/40 split. There are also a lot of low grade coppers being used do to the skyrocketing cost of pure copper. Low grade copper with a lot of impurities or brass removes the thermal transfer efficiency advantage of using pure C1100 grade copper. When you see “Red Copper which is 3 time faster on heat dispensation than normal copper” it is comparing the thermal efficiency of copper to brass and the rate is about right if assuming a pure grade copper like C1100. High grade copper with low impurities is getting very expensive and it is not uncommon to see low grade coppers being used to lower costs but using low grade copper for this application can cause degradation or COD damage if not able to transfer the heat away from the diode as quick as it is being generated with some of the newer generation high power laser diodes that produce a massive amount of waste heat. Search for some of the reviews over on the forums for more details. Low grade copper can have even lower thermal transfer efficiency than brass but will have the red color. you can usually spot it pretty easy as it may have a slightly pitted surface, it is more brittle than pliable and threading can be rough with lots of burrs which is another danger of particles breaking off and getting on the diode window burning up the laser. Warning if you buy a heatsink that is over sized due to poor machining which the low quality cheap ones that are all over ebay thow it out. Don’t attempt to fill physical gaps with thermal grease as that is not going to work and your diode will degrade from overheating in the now thermally isolated module that only has a sliver of direct with a heatsink. Thermal compound is for filling microscopic gaps between two surfaces in direct contact with pressure. It will actually work against you. Also the acrylic lenses should only be used with diodes with power output of 300mW or less. Use with higher power diodes will melt the lens and very likely ruin the diode. A glass lens is needed for higher power diodes. New variations are now available as well as full copper in all back half options. There also options with glass lenses and the full and half length back halfs are a must if using diodes with powers of 4W and above as they draw heat directly from the base but that means no options for internal laser drivers as can be done with the hollow back halfs. A diode press is available as well and if chosen will come with the press for the type of diodes the models orders fit and a sleeve that acts as a centering guide for pressing diodes into the diode mount.
1.2W 520nm NDG7475 Laser Diode In Copper Module W/X-Drive & DTR-G-8 Glass Lens
Listing is for a single 1.2W 520nm NDG7475 laser module. Unit is mounted in a 12mmX30mm high quality copper module for max cooling and stability. It is prewired with a 2.2A SXD buck laser driver and comes with the new DTR-G-8 glass lens. Unit measures 12mmx30mm fit for standard 12mm laser heatsinks. The unit is ready to be dropped into your final project. No setting current or soldering diode to driver. Just place in heatsink and connect leads to your power supply. Input voltage range is 6V-9V. Great for use with two Li-Ion’s in series. Suggest two 16340/18350/18650 3.7V Li-Ion’s. You can also use a 6-9V 2A wall adapter or bench power supply. Warning. There are many reports on the forms and I have had multiple customers informing me they have received 700mW NDG700 520 diodes from foreign sellers here on ebay advertised as the real NDG7475 and told to over drive the diode past safe limits to get 1W out of it. Also listed as NDG7575, NDG7K75, 1W 520nm NDG7475(T) or just 1W 520 diode. This may make it an accurate claim of potential power but is deceptive and will reduce the life of the diode significantly. The actual NDG7475 1W 520nm diode will hit 1W @ 1.5A where the NDG700 needs 1.7A. Here is what you get. The X-Drive is encased in the back of the model connected to the diode. Modules are wired with extremely flexible 26AWG wire that is burn proof and makes for very easy soldering. Wire assignment is: Red + Black – Wavelength 520nm +/- 5nmInput Voltage 6V-9VDriver Output Current 2200mADriver Current Draw 1.7A +/- 0.5APower Output 1.2W-1.4WDriver Type Constant CurrentLens M9x0.5mm Threaded DTR-G-8 Glass Lens Here is my testing on this diode Nichia NDG7475 1W 520nm Laser DiodeExciting day. Finally got my 1W Green diodes and could not wait to do some testing on them.:eg:This 9mm diode has off center pins.First thing I did is pop one in a sink and fire it up. Was amazed the brightness of the beam indoors during the day. Really bright.Then beam specs and divergence seem to be nearly the exact same as the NDB7875 and M140 445nm diodes. This diode with the G-2 has a pretty identical box reflection as the NDB7875 and M140 as well. So next I decided to put the NDG7475 head to head with the NDB7875 @ 25 Feet they were both about 23mm with a G-2.So now on to the meat here is the LPM test of the diode. I expected this thing to dim maybe around 2.5A but it just kept going. I decided to end it when I started getting foldback around 3.5A. There really was not much gain from 2.5A up but wanted to see where it dimmed but it never did at least to where I felt it would not blow up as they are kind of pricey.:whistle: Would not suggest driving past this point. Stay 2.4A or under. There you have it. Whole lot of of Green goodness. Oh and for some dark shots. *Disclamer* By purchasing these diodes you are agreeing to the following. – You are over 18 years of age . – You understand that these components that are mentioned above are dangerous when not properly assembled into a finished product. – You will use these as components and properly incorporate them into a finished product. – You will use these diodes/modules in a safe and responsible manner and for a legal purpose. – You are legally responsible for the use of these components, improper use of these components or their end products. – You are legally responsible for any injury to anybody resulting from the use of or assembly of these components or their finished products. – You Accept this diode/module as a COMPONENT for integration in a system of YOUR OWN design and will be legally responsible from any and all LIABILITIES These Diodes and Modules are sold solely as a component for incorporation into the customer’s end products. Therefore, this diode/module is exempt from compliance with the appropriate requirements of FDA 21CFR, section 1040.10 and 1040.11 for complete products.
1.8A SXD Super X-Drive Laser Driver M140 – PLTB450B – NDB7875 – NDG7475
Listing is for a single 1.8A SXD Super X-Drive Bucking Laser Driver. The X-Drive is an extremely efficient buck style regulator with many built in safety features to protect and give long life to your laser diodes. Driver has soft start, overshoot protection and very low noise as well as self bleeding output caps to prevent spikes by charged output caps that so many diodes have been lost to from other drivers. This version of the driver is suited to work with the M140, NDG7875, NDB7675, NDG700, NDG7475, NUGM01 or the PLTB450B laser diodes using a 7-12V power source capable of 2A+ like two Li-ions in series. Input and output pads are clearly marked for easy installation. Here are a some pictures of the dimensions: SXD Super X-Drive TTL control. These instructions are only if you plan to use TTL to control the driver. If you don’t plan on using TTL the driver will work as is no need to modify anything.:) PWN/TTLModulation Frequency: Up to 1kHz Modulation Voltage 0-5V Full range: 1.6V ON “Max 12V” & 0.6V – 0V OFF Solder the modulation Wire to the Yellow Arrow after removing the 10K.^^^^ Like SO: Enable Pin is High “ON” Minimum 1.6V with an Ultimate MAX of 12V inputEnable Pin is Low “OFF” 0.6V or lower 12V MAX the enable pin can take. Remove the Ramp Up Capacitor.