Please note:  If you wish to place an international order with us, please email us at the address above with your requirements and full contact details and we will be happy to send you a quotation.

PLD Series

The PLD Series Laser Diode Drivers deliver the reliable performance in a compact and easy-to-integrate package. Versions are available with outputs are available from 200mA to 12.5 Amps.

Additional information

  • Small size - model dependent
  • Single supply operation: +5 V to +30 V
  • Slow Start Laser Diode Protection
  • Constant Current or Constant Power Mode
  • Active Current Limit
  • Mechanical Relay Protection
  • Integrated fan and heatsink - PCB mount
  • 200 mA - 12.5 A laser diode current - model dependent
  • Remote enable / disable input
  • Onboard setpoint and limit controls

The PLD Series Laser Diode Drivers deliver the reliability and performance you expect from a Wavelength Electronics laser driver in a compact and easy-to-integrate package. Tens of thousands of PLD drivers are deployed in laser systems around the world, proving beyond doubt the reliability and stability of the design. PLD Series laser power supplies are found in particle counters, manufacturing vision systems, photovoltaic quantum efficiency testers, wavefront scanners, fiber aligners, and laser diode LIV testers.


So you can optimize your total system performance, Wavelength offers the PLD Series drivers over a range of output currents. Choose the model that best suits your needs, or call Wavelength if you need assistance deciding:
PLD Series – Output ranges of 200mA, 500mA, 1.25A, 5A and 6.5A; circuit-board mounted package
PLD-CH Series – from 5A, 10A and 12.5A output current; chassis-mount package


The PLD drivers operate from a single 5 V power supply. To accommodate high compliance lasers, or multiple stacked lasers, the PLD laser diode drivers allow the laser to be driven from a separate power supply up to 30 V.

The available PLDEVALPCB evaluation circuit board reduces your development costs and allows you to focus on designing the features that will set your system apart.

Remote computer control is available using the USBKIT, which also allows graphing and datalogging.


Thoughtfully designed features provide valuable benefits and protect the laser against operational anomalies:

  • Remote enable can be tied to a safety interlock and a temperature controller, such as Wavelength’s PTC Series.
  • Built-in constant current and constant power operating modes minimize your electronics overhead.
  • On-board controls mean quick and easy driver setup.
  • Analog setpoint input gives you remote external control of the laser current and modulation.
  • Latching current limit safely switches off output if current limit is reached.

Built-in safety features make your product more robust to real world operating conditions: latching current limit, slow start circuit, and a mechanical shorting relay protect the laser and ensure long-term system reliability. Long-term reliability means better up-time, fewer service calls, and more customers who are satisfied with your products.


+44 (0) 1829 773155

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Next day delivery for UK webshop orders received before 12 noon, subject to stock availability.

All prices shown exclude VAT and delivery.

Delivery charge for UK webshop orders - £8.50 excl VAT.

Non-UK orders - Delivery is based on weight of order.

Non-UK orders - Local import duties and taxes are not included.