{"id":3283,"date":"2015-09-15T15:14:09","date_gmt":"2015-09-15T21:14:09","guid":{"rendered":"https:\/\/jtechphotonics.com\/?post_type=product&#038;p=3283"},"modified":"2026-06-12T20:25:34","modified_gmt":"2026-06-13T02:25:34","slug":"3-8w-laser-and-2-5amp-safety-compliant-driver-kit","status":"publish","type":"product","link":"https:\/\/jtechphotonics.com\/?product=3-8w-laser-and-2-5amp-safety-compliant-driver-kit","title":{"rendered":"4.2W Laser and 2.5amp Safety Compliant Driver Kit"},"content":{"rendered":"<h4>Due to increased quality of our diode lasers, the 3.8W is now rated at 4.2W minimum.<\/h4>\n<h2>Fourth Generation Product \u2013 it just keeps getting better!<\/h2>\n<p>The standard kit comes with:<\/p>\n<ul>\n<li>4.2W laser diode component with mounting screws<\/li>\n<li>2.5 Amp Adjustable Safety Compliant Laser Diode Driver<\/li>\n<li><a title=\"Power Adaptor 12V 2 Amp, US Style Plug\" href=\"https:\/\/jtechphotonics.com\/?product=power-adaptor-12v-2-amp\">Power Adapter 12V 2.5A, US Style Plug<\/a><\/li>\n<li><a title=\"Laser Safety Goggles For 445nm Lasers\" href=\"https:\/\/jtechphotonics.com\/?product=laser-safety-goggles-for-445nm-lasers\">Laser Safety Goggles for 445nm Lasers<\/a><\/li>\n<li>3&#8242; Molex MiniFit Jr. Input Cable (<a href=\"https:\/\/jtechphotonics.com\/?product=molex-mini-fit-jr-jumper-2-wire-connector\">for longer lengths purchase here<\/a>)<\/li>\n<li><a href=\"https:\/\/jtechphotonics.com\/?product=laser-fan-upgrade-2-2w-or-2-8w-laser-kit\">Laser Fan<\/a><\/li>\n<\/ul>\n<p>We have kept all of the features that make this laser kit awesome \u2013 precision laser trimmed regulators for constant current to the laser, 0.01 tuning resolution, digital isolation, soft start, esd protection, current limiting, and the list goes on. \u00a0But NOW we have more safety in mind as well! \u00a0The <a href=\"http:\/\/www.fda.gov\/Radiation-EmittingProducts\/RadiationEmittingProductsandProcedures\/HomeBusinessandEntertainment\/LaserProductsandInstruments\/default.htm\">US Federal Government has a list of things<\/a> that are required for operating these high power class 4 lasers. \u00a0They might seem trivial, but they could save your eyesight! \u00a0Here is a run down of the <em><strong>new safety feature<\/strong><strong>s<\/strong><\/em> to protect yourself and others:<\/p>\n<ul>\n<li><strong>Key Switch \u2013\u00a0<\/strong>This key is needed to enable the laser. \u00a0When the key switch is turned on, the laser is enabled and the key CANNOT come out. \u00a0You can only remove the key when it is disabled. \u00a0This feature is good if you have curious children or have your laser in a shared area and want to limit use. \u00a0Just take the key out and hide it!<\/li>\n<li><strong>Remote Interlocks<\/strong> \u2013 This feature allows for addition of switches to your enclosure so when it is open, the laser will automatically turn off. \u00a0Also provides for the addition of an <a title=\"Emergency Stop Switch\" href=\"https:\/\/jtechphotonics.com\/?product=emergency-stop-switch\">E Stop button for the laser<\/a>, which is always good for if you need to stop the laser super quick! \u00a0Add as many switches as you want to make a super safe area for your laser machine so nobody can accidentally look into the laser.<\/li>\n<li><strong>Power Fault Protection\u00a0<\/strong>&#8211; This one may seem like it is not needed, but hear us out. \u00a0Consider your power goes out in your area where the laser is located. \u00a0You were running your program and then everything is dark\u2026 \u00a0Power doesn\u2019t come back on for awhile\u2026 long enough for you to forget that the laser was left ON! \u00a0You come back and are checking your laser and boom, the power is back on, right when you are looking straight at it. \u00a0Well, don\u2019t worry because the laser will be disabled whenever the power to the driver is lost. \u00a0Press the reset button and you are back in action!<\/li>\n<li><strong>Emission Indicator\u00a0<\/strong>&#8211; \u00a0The small little LED on the front to let you know \u00a0your really super bright laser is on\u2026 \u00a0They require this in case you are using an infrared invisible laser.<\/li>\n<\/ul>\n<h3>What this kit includes:<\/h3>\n<p>The standard kit comes with:<\/p>\n<ul>\n<li>4.2W laser diode component with mounting screws<\/li>\n<li>2.5 Amp Adjustable Safety Compliant Laser Diode Driver<\/li>\n<li><a title=\"Power Adaptor 12V 2 Amp, US Style Plug\" href=\"https:\/\/jtechphotonics.com\/?product=power-adaptor-12v-2-amp\">Power Adapter 12V 2.5A, US Style Plug<\/a><\/li>\n<li><a title=\"Laser Safety Goggles For 445nm Lasers\" href=\"https:\/\/jtechphotonics.com\/?product=laser-safety-goggles-for-445nm-lasers\">Laser Safety Goggles for 445nm Lasers<\/a><\/li>\n<li>3&#8242; Molex MiniFit Jr. Input Cable (<a href=\"https:\/\/jtechphotonics.com\/?product=molex-mini-fit-jr-jumper-2-wire-connector\">for longer lengths purchase here<\/a>)<\/li>\n<li><a href=\"https:\/\/jtechphotonics.com\/?product=laser-fan-upgrade-2-2w-or-2-8w-laser-kit\">Laser Fan<\/a><\/li>\n<\/ul>\n<h2><img loading=\"lazy\" decoding=\"async\" class=\"wp-image-8721 aligncenter\" src=\"https:\/\/jtechphotonics.com\/wp-content\/uploads\/2015\/09\/Laser-Upgrade-Kit-Contents-JTech-Photonics.jpg\" alt=\"\" width=\"725\" height=\"578\" srcset=\"https:\/\/jtechphotonics.com\/wp-content\/uploads\/2015\/09\/Laser-Upgrade-Kit-Contents-JTech-Photonics.jpg 1000w, https:\/\/jtechphotonics.com\/wp-content\/uploads\/2015\/09\/Laser-Upgrade-Kit-Contents-JTech-Photonics-600x478.jpg 600w, https:\/\/jtechphotonics.com\/wp-content\/uploads\/2015\/09\/Laser-Upgrade-Kit-Contents-JTech-Photonics-300x239.jpg 300w, https:\/\/jtechphotonics.com\/wp-content\/uploads\/2015\/09\/Laser-Upgrade-Kit-Contents-JTech-Photonics-768x612.jpg 768w, https:\/\/jtechphotonics.com\/wp-content\/uploads\/2015\/09\/Laser-Upgrade-Kit-Contents-JTech-Photonics-150x120.jpg 150w\" sizes=\"auto, (max-width: 725px) 100vw, 725px\" \/><\/h2>\n<h2>Laser Overview<\/h2>\n<p>This laser is our newest compliment to our laser kits and can run at 2.5amps continuosly to produce 3.8W of optical power! \u00a0This is compared to our 2.8W kit, which at the factory setting only produces 2W of optical power. \u00a0You will be able to cut and engrave at almost twice the speed!<\/p>\n<h4>\u00a0<b>Absolute Maximum Ratings:<\/b><\/h4>\n<table border=\"1\" width=\"498\" cellspacing=\"0\" cellpadding=\"0\">\n<tbody>\n<tr>\n<td width=\"245\">Item<\/td>\n<td width=\"198\">Absolute Maximum Ratings<\/td>\n<td width=\"55\">Unit<\/td>\n<\/tr>\n<tr>\n<td>Forward Current (Tc = 25\u00b0C)<\/td>\n<td>3<\/td>\n<td>A<\/td>\n<\/tr>\n<tr>\n<td>Absolute max output optical power<\/td>\n<td>&gt;4<\/td>\n<td>W<\/td>\n<\/tr>\n<tr>\n<td>Allowable Reverse Current (Tc = 25\u00b0C)<\/td>\n<td>85<\/td>\n<td>mA<\/td>\n<\/tr>\n<tr>\n<td>Operating Case Temperature<\/td>\n<td>50<\/td>\n<td>\u00b0C<\/td>\n<\/tr>\n<\/tbody>\n<\/table>\n<p><b>Electrical \/ Optical Characteristics:<\/b><\/p>\n<table border=\"1\" width=\"524\" cellspacing=\"0\" cellpadding=\"0\">\n<tbody>\n<tr>\n<td width=\"275\">Item<\/td>\n<td width=\"57\">Min<\/td>\n<td width=\"64\">Typ.<\/td>\n<td width=\"64\">Max<\/td>\n<td width=\"64\">Unit<\/td>\n<\/tr>\n<tr>\n<td>Optical Output Power @2.5\u00a0amps<\/td>\n<td><\/td>\n<td>4.2<\/td>\n<td>\u00a04.5<\/td>\n<td>W<\/td>\n<\/tr>\n<tr>\n<td><\/td>\n<td><\/td>\n<td><\/td>\n<td><\/td>\n<td><\/td>\n<\/tr>\n<tr>\n<td>Dominant Wavelength<\/td>\n<td>435<\/td>\n<td><\/td>\n<td>455<\/td>\n<td>nm<\/td>\n<\/tr>\n<tr>\n<td>Threshold Current<\/td>\n<td>80<\/td>\n<td><\/td>\n<td>220<\/td>\n<td>mA<\/td>\n<\/tr>\n<tr>\n<td>Operating Voltage<\/td>\n<td>3.7<\/td>\n<td><\/td>\n<td>5.5<\/td>\n<td>V<\/td>\n<\/tr>\n<tr>\n<td>Focused Spot Size<\/td>\n<td>0.011<\/td>\n<td>0.014<\/td>\n<td><\/td>\n<td>Inches<\/td>\n<\/tr>\n<tr>\n<td>Beam Divergence Full Angle (1\/e^2) \/\/<\/td>\n<td>5<\/td>\n<td>14<\/td>\n<td>25<\/td>\n<td>deg.<\/td>\n<\/tr>\n<tr>\n<td>Beam Divergence Full Angle (1\/e^2) \u2013 Perp<\/td>\n<td>30<\/td>\n<td>44<\/td>\n<td>50<\/td>\n<td>deg.<\/td>\n<\/tr>\n<\/tbody>\n<\/table>\n<p><em>-Note: The beam is slightly rectangular. Focused size specification is for the long axis.<\/em><\/p>\n<p><em>-Above specifications are for reference purposes only and are subject to change.\u00a0 Figures in specifications may contain measurement errors.<\/em><\/p>\n<p><img loading=\"lazy\" decoding=\"async\" class=\"alignnone size-medium wp-image-11993\" src=\"https:\/\/jtechphotonics.com\/wp-content\/uploads\/2015\/10\/Class-4-Laser-Radiation-Sticker-4_2w-sm-300x196.jpg\" alt=\"\" width=\"300\" height=\"196\" srcset=\"https:\/\/jtechphotonics.com\/wp-content\/uploads\/2015\/10\/Class-4-Laser-Radiation-Sticker-4_2w-sm-300x196.jpg 300w, https:\/\/jtechphotonics.com\/wp-content\/uploads\/2015\/10\/Class-4-Laser-Radiation-Sticker-4_2w-sm-150x98.jpg 150w, https:\/\/jtechphotonics.com\/wp-content\/uploads\/2015\/10\/Class-4-Laser-Radiation-Sticker-4_2w-sm.jpg 420w\" sizes=\"auto, (max-width: 300px) 100vw, 300px\" \/><\/p>\n<h2>Driver Overview<\/h2>\n<p>This is the fourth generation of the popular High Current Laser Diode Driver series.\u00a0 We designed this new generation to follow the federal guidelines for safety compliance for high power Class 4 laser operation.\u00a0 This includes the use of a key enable switch, safety interlock system, power off reset, and laser LED indicators.\u00a0 All of these features make for a safer laser operation and will comply with federal laws regulating such operations.<\/p>\n<p>At the heart of the product are laser trimmed parallel regulators to give constant current without the large temperature dissipation of other regulators. Couple this with inherent safety features like soft starting, current isolation, reverse protection, ESD protection, and thermal shutdown control and you have all you need in a small package.<\/p>\n<p>The high power laser diode driver is cost effective and easily integrated into industrial, research, or enthusiast projects and products.\u00a0 The driver can be operated in CW mode or in Input Control Mode to be interfaced to remote electronics.\u00a0 This design uses digital isolators for super fast response and input range while protecting the laser from deadly ground loops.\u00a0\u00a0 The board has screw terminal connections as well as Molex mini-fit Jr. connectors for easy connections to external equipment for control and the laser diode output.<\/p>\n<h3>Features:<\/h3>\n<ul>\n<li>High power current source for driving Laser Diodes and Light Emitting Diodes.<\/li>\n<li>Current Range of \u00a02.5 Amps.<\/li>\n<li>Current Ranges are adjustable in 500ma increments.<\/li>\n<li>Integrated cooling fan<\/li>\n<li>Soft start for diode protection.<\/li>\n<li>Reverse diode and ESD protection.<\/li>\n<li>Thermal Protection and Over Current Protection.<\/li>\n<li>Federal Compliant Safety Features<\/li>\n<li>Key switch, Remote Interlock, Power Fault Reset<\/li>\n<li>Compact Size.<\/li>\n<li>CW Mode and Input Control Mode.<\/li>\n<li>Digitally isolated control input.<\/li>\n<li>Control from CW to 5KHz.<\/li>\n<li>Configurable Input signal: Inverting \/Non-Inverting.<\/li>\n<li>Multiple connector options for both Laser\/LED output and control input.<\/li>\n<li>LED status lights for input laser enabled and laser on.<\/li>\n<\/ul>\n<h3><a name=\"_Toc400627039\"><\/a>Specifications<\/h3>\n<table width=\"607\">\n<tbody>\n<tr>\n<td width=\"233\"><strong>Specification<\/strong><\/td>\n<td width=\"373\"><strong>HCDBSAFDA2_5AMP<\/strong><\/td>\n<\/tr>\n<tr>\n<td width=\"233\">Current Source Range:<\/td>\n<td width=\"373\">0 \u2013 2.5 Amps<\/td>\n<\/tr>\n<tr>\n<td width=\"233\">Current Limit Jumper Settings:<\/td>\n<td width=\"373\">0.5, 1.0, 1.5, 2.0, 2.5 Amps<\/td>\n<\/tr>\n<tr>\n<td width=\"233\">Compliance Voltage w\/12V adapter:<\/td>\n<td width=\"373\">8 volts<\/td>\n<\/tr>\n<tr>\n<td width=\"233\">Current Resolution:<\/td>\n<td width=\"373\">0.1%<\/td>\n<\/tr>\n<tr>\n<td width=\"233\">Current Adjustment:<\/td>\n<td width=\"373\">Analog Trim Pot<\/td>\n<\/tr>\n<tr>\n<td width=\"233\">Current Range Accuracy<\/td>\n<td width=\"373\">Always greater than limit, no more than 15%<\/td>\n<\/tr>\n<tr>\n<td width=\"233\">Laser Diode Protection:<\/td>\n<td width=\"373\">Soft Start, Reverse Voltage, Current Limit, Thermal Shutdown<\/td>\n<\/tr>\n<tr>\n<td width=\"233\">Integrated Safety Features<\/td>\n<td width=\"373\">Laser Enable Key Switch, Integrated Laser Interlock, Power off Reset, LED Indicators<\/td>\n<\/tr>\n<tr>\n<td width=\"233\">AC Adapter Input Voltage:<\/td>\n<td width=\"373\">100 \u2013 240 VAC<\/td>\n<\/tr>\n<tr>\n<td width=\"233\">Control Signal Digital Isolation Voltage:<\/td>\n<td width=\"373\">4500 Vrms<\/td>\n<\/tr>\n<tr>\n<td width=\"233\">Minimum Control Signal \u201dTurn On\u201d Voltage:<\/td>\n<td width=\"373\">2.8 Volts<\/td>\n<\/tr>\n<tr>\n<td width=\"233\">Control Signal Maximum Voltage:<\/td>\n<td width=\"373\">36 Volts<\/td>\n<\/tr>\n<tr>\n<td width=\"233\">Control Signal Maximum Current:<\/td>\n<td width=\"373\">50 ma<\/td>\n<\/tr>\n<tr>\n<td width=\"233\">Control Signal Maximum Frequency:<\/td>\n<td width=\"373\">5KHz<\/td>\n<\/tr>\n<tr>\n<td width=\"233\">Connectors:<\/td>\n<td width=\"373\">Screw Terminal and Molex Mini-Fit Jr\u2122 Connectors<\/td>\n<\/tr>\n<tr>\n<td width=\"233\">Operating Temperature:<\/td>\n<td width=\"373\">0 to 40 \u00b0C<\/td>\n<\/tr>\n<tr>\n<td width=\"233\">Storage Temperature:<\/td>\n<td width=\"373\">-40 to 70 \u00b0C<\/td>\n<\/tr>\n<tr>\n<td width=\"233\">Dimensions:<\/td>\n<td width=\"373\">3.6\u2033 x 2.2\u2033<\/td>\n<\/tr>\n<\/tbody>\n<\/table>\n<h3><\/h3>\n<h3>Accessories:<\/h3>\n<p style=\"text-align: center;\"><a title=\"Remote Reset Switch\" href=\"https:\/\/jtechphotonics.com\/?product=remote-reset-switch\">Remote Reset Switch \u2013 In case your driver board is in a hard to reach area.<\/a><\/p>\n<p style=\"text-align: center;\"><a href=\"https:\/\/jtechphotonics.com\/?product=remote-reset-switch\"><img loading=\"lazy\" decoding=\"async\" class=\"aligncenter wp-image-1760 size-thumbnail\" src=\"https:\/\/jtechphotonics.com\/wp-content\/uploads\/2014\/10\/Remote-Reset-800-150x150.jpg\" alt=\"Remote Reset 800\" width=\"150\" height=\"150\" srcset=\"https:\/\/jtechphotonics.com\/wp-content\/uploads\/2014\/10\/Remote-Reset-800-150x150.jpg 150w, https:\/\/jtechphotonics.com\/wp-content\/uploads\/2014\/10\/Remote-Reset-800-200x200.jpg 200w, https:\/\/jtechphotonics.com\/wp-content\/uploads\/2014\/10\/Remote-Reset-800-100x100.jpg 100w\" sizes=\"auto, (max-width: 150px) 100vw, 150px\" \/><\/a><\/p>\n<p style=\"text-align: center;\"><a title=\"Emergency Stop Switch\" href=\"https:\/\/jtechphotonics.com\/?product=emergency-stop-switch\">Add an Emergency Stop Switch to your interlock circuit. \u00a0Click Here<\/a><\/p>\n<p><a href=\"https:\/\/jtechphotonics.com\/?product=emergency-stop-switch\"><img loading=\"lazy\" decoding=\"async\" class=\"aligncenter wp-image-1778 size-thumbnail\" src=\"https:\/\/jtechphotonics.com\/wp-content\/uploads\/2014\/10\/Emergency-Stop-Button-Switch-800-150x150.jpg\" alt=\"Emergency Stop Button Switch 800\" width=\"150\" height=\"150\" srcset=\"https:\/\/jtechphotonics.com\/wp-content\/uploads\/2014\/10\/Emergency-Stop-Button-Switch-800-150x150.jpg 150w, https:\/\/jtechphotonics.com\/wp-content\/uploads\/2014\/10\/Emergency-Stop-Button-Switch-800-200x200.jpg 200w, https:\/\/jtechphotonics.com\/wp-content\/uploads\/2014\/10\/Emergency-Stop-Button-Switch-800-100x100.jpg 100w\" sizes=\"auto, (max-width: 150px) 100vw, 150px\" \/><\/a><\/p>\n","protected":false},"excerpt":{"rendered":"<p>This laser produces an <strong>amazing 4.2W<\/strong> of power at MFG recommended settings of 2.5amps!<br \/>\n(<em>this laser is the same as the older 3.8W, just improved output)<\/em><\/p>\n<p><em><strong>Engrave<\/strong> <\/em>on wood, leather, acrylics, and many other materials!<br \/>\n<strong><em>Cut<\/em> <\/strong>thin and non dense woods like Balsa, Basswood, and thin plywood!<br \/>\n<em><strong>Cut<\/strong> <\/em>many types other materials like foam and acrylics!<\/p>\n<p><strong>MAKE\u00a0<\/strong>incredible objects for projects or production. \u00a0Your creations are only limited by your imagination!<\/p>\n<p><strong><a href=\"https:\/\/jtechphotonics.com\/?product_cat=mouting-kits\">CLICK HERE<\/a><\/strong>\u00a0to order your mounting kit<\/p>\n<p>Choose your power adapter region, North America or International Plugs.<\/p>\n","protected":false},"featured_media":9573,"comment_status":"open","ping_status":"closed","template":"","meta":{"_monsterinsights_skip_tracking":false,"_monsterinsights_sitenote_active":false,"_monsterinsights_sitenote_note":"","_monsterinsights_sitenote_category":0,"neve_meta_sidebar":"","neve_meta_container":"","neve_meta_enable_content_width":"","neve_meta_content_width":0,"neve_meta_title_alignment":"","neve_meta_author_avatar":"","neve_post_elements_order":"","neve_meta_disable_header":"","neve_meta_disable_footer":"","neve_meta_disable_title":"","neve_meta_reading_time":""},"product_brand":[],"product_cat":[150],"product_tag":[],"class_list":["post-3283","product","type-product","status-publish","has-post-thumbnail","product_cat-uncategorized","first","outofstock","taxable","shipping-taxable","purchasable","product-type-variable"],"composite_virtual":false,"composite_layout":"","composite_add_to_cart_form_location":"","composite_editable_in_cart":false,"composite_sold_individually_context":"","composite_shop_price_calc":"","composite_components":[],"composite_scenarios":[],"bundled_by":[],"bundle_stock_status":"outofstock","bundle_stock_quantity":null,"bundle_virtual":false,"bundle_layout":"","bundle_add_to_cart_form_location":"","bundle_editable_in_cart":false,"bundle_sold_individually_context":"","bundle_item_grouping":"","bundle_min_size":"","bundle_max_size":"","bundle_price":[],"bundled_items":[],"bundle_sell_ids":[],"yoast_head":"<!-- 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(this laser is the same as the older 3.8W, just improved output)  Engrave on wood, leather, acrylics, and many other materials! Cut thin and non dense woods like Balsa, Basswood, and thin plywood! Cut many types other materials like foam and acrylics!  MAKE\u00a0incredible objects for projects or production. \u00a0Your creations are only limited by your imagination!  CLICK HERE\u00a0to order your mounting kit  Choose your power adapter region, North America or International Plugs.\" \/>\n<meta property=\"og:url\" content=\"https:\/\/jtechphotonics.com\/?product=3-8w-laser-and-2-5amp-safety-compliant-driver-kit\" \/>\n<meta property=\"og:site_name\" content=\"J Tech Photonics, Inc.\" \/>\n<meta property=\"article:modified_time\" content=\"2026-06-13T02:25:34+00:00\" \/>\n<meta property=\"og:image\" content=\"https:\/\/jtechphotonics.com\/wp-content\/uploads\/2015\/09\/Laser-Shroud-Kit-Jtech-Photonics-sq.jpg\" \/>\n\t<meta property=\"og:image:width\" content=\"877\" \/>\n\t<meta property=\"og:image:height\" content=\"691\" \/>\n\t<meta property=\"og:image:type\" content=\"image\/jpeg\" \/>\n<meta name=\"twitter:card\" content=\"summary_large_image\" \/>\n<meta name=\"twitter:label1\" content=\"Est. reading time\" \/>\n\t<meta name=\"twitter:data1\" content=\"6 minutes\" \/>\n<script type=\"application\/ld+json\" class=\"yoast-schema-graph\">{\"@context\":\"https:\\\/\\\/schema.org\",\"@graph\":[{\"@type\":\"WebPage\",\"@id\":\"https:\\\/\\\/jtechphotonics.com\\\/?product=3-8w-laser-and-2-5amp-safety-compliant-driver-kit\",\"url\":\"https:\\\/\\\/jtechphotonics.com\\\/?product=3-8w-laser-and-2-5amp-safety-compliant-driver-kit\",\"name\":\"4.2W Laser and 2.5amp Safety Compliant Driver Kit - 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