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2.5 Amp Adjustable Laser Diode Driver, OEM



Product Description

Are you looking for a powerful yet easy to integrate laser driver for your project or product that won’t break the bank?  Well look no further!

The J Tech Photonics High Power Laser/LED driver is designed with features, protection, size, and cost in mind.

This is the fourth generation of the popular High Current Laser Diode Driver series.  We designed this new generation to follow the federal guidelines for safety compliance for high power Class 4 laser operation.  This includes the use of a key enable switch, safety interlock system, power off reset, and laser LED indicators.  All of these features make for a safer laser operation and will comply with federal laws regulating such operations.

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.

The high power laser diode driver is cost effective and easily integrated into industrial, research, or enthusiast projects and products.  The driver can be operated in CW mode or in Input Control Mode to be interfaced to remote electronics.  This design uses digital isolators for super fast response and input range while protecting the laser from deadly ground loops.   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.

2.5 Amp Version

This version of the popular High Current Laser Driver offers up bigger regulators, bigger power adapter, more capacitance, more resistors, and more options for current limits.  It includes the OEM Power Connector with Cable 6′ 18AWG – Straight to easily connect to a DC power supply of choice.  There is a 3 volt drop across the regulators, so choose a power supply to be above your laser diode voltage plus at least three volts.

This kit does NOT come with an included power adapter.  Feel free to choose an associated power adapter from the accessories section of or from any other supplier.

This driver will provide 2.5 amps of constant regulated and protected current to the diode. Configurable current limits with jumpers for 0.5, 1.0, 1.5, 2.0, and 2.5 amp settings and adjustable output with an analog trim pot. It also can be remotely controlled with an opto isolated input with a super huge range of acceptable voltages for turning your driver on and off. Does your equipment in your project or system that you want to interface with have backwards logic? No problem! There is a jumper for choosing inverted or non inverted logic as well! Perfect for integrating into any final product or project.

Simple, effective, and inexpensive current source for all of your laser needs…



  • High power current source for driving Laser Diodes and Light Emitting Diodes.
  • Current Range of  2.5 Amps.
  • Current Ranges are adjustable in 500ma increments.
  • Integrated cooling fan
  • Soft start for diode protection.
  • Reverse diode and ESD protection.
  • Thermal Protection and Over Current Protection.
  • Federal Compliant Safety Features
  • Key switch, Remote Interlock, Power Fault Reset
  • Compact Size.
  • CW Mode and Input Control Mode.
  • Digitally isolated control input.
  • Control from CW to 5KHz.
  • Configurable Input signal: Inverting /Non-Inverting.
  • Multiple connector options for both Laser/LED output and control input.
  • LED status lights for input laser enabled and laser on.


Specification HCDBSAFDA2_5AMP
Current Source Range: 0 – 2.5 Amps
Current Limit Jumper Settings: 0.5, 1.0, 1.5, 2.0, 2.5 Amps
Compliance Voltage w/12V adapter: 8 volts
Current Resolution: 0.1%
Current Adjustment: Analog Trim Pot
Current Range Accuracy Always greater than limit, no more than 15%
Laser Diode Protection: Soft Start, Reverse Voltage, Current Limit, Thermal Shutdown
Integrated Safety Features Laser Enable Key Switch, Integrated Laser Interlock, Power off Reset, LED Indicators
AC Adapter Input Voltage: 100 – 240 VAC
Control Signal Digital Isolation Voltage: 4500 Vrms
Minimum Control Signal ”Turn On” Voltage: 2.8 Volts
Control Signal Maximum Voltage: 36 Volts
Control Signal Maximum Current: 50 ma
Control Signal Maximum Frequency: 5KHz
Connectors: Screw Terminal and Molex Mini-Fit Jr™ Connectors
Operating Temperature: 0 to 40 °C
Storage Temperature: -40 to 70 °C
Dimensions: 3.6″ x 2.2″

Power Adapter Specifications:

  • Positive center
  • 2.1mm I.D. x 5.5mm O.D



Remote Reset Switch – In case your driver board is in a hard to reach area.

Remote Reset 800

Add an Emergency Stop Switch to your interlock circuit.  Click Here

Emergency Stop Button Switch 800

For more information, check out the:

Laser Driver FAQ 

Laser Driver Specifications

Additional Information

Weight 0.8 lbs
Dimensions 6 x 3 x 1.1 in


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