4A DC Current Source

The SpikeSafe 4A DC Current Source supports LED reliability, burn-in test, IESNA LM-80 and other applications requiring multiple drive channels. It provides 8 independent source channels of reliable and accurate current drive at compliance voltages up to 400V. This high voltage capability makes the SS400 an ideal choice to power series circuits containing multiple devices.

Each source channel delivers up to 1000W of output power at an industry-leading 96% power conversion efficiency. High efficiency reduces electricity and cooling needs, lowering the total cost of ownership for systems incorporating the SS400.

Built-in voltage and current readback circuits support LM-80 monitoring requirements. Devices being tested are protected with a gentle turn-on during ramp-up, and with SpikeSafe™ load protection during operation.

4A Current Source Key Specifications

  • Independent Programmable Source Channels: 8
  • Output Power: 1000W/Channel, 8000W Total
  • Max. Compliance Voltage: 50V, 100V, 200V, 300V, or 400V
  • Max. Current: 4A
  • Output Current Accuracy: 0.04%+175µA
  • Recommended Min. Operating Current: 5.9mA


Vektrex offers software options for a complete solution. Vektrex DC current sources are easy-to-use with Vektrex Control Panel and SpikeSafe Test and Reliability Software (STARS) and STARPLOT. With Vektrex developed Control Panel Software Application and SpikeSafe current sources, it is possible to configure, control, and monitor devices – in the lab or remotely. STARS controls and monitors sources, loads, and thermal control devices during testing. With STARS, long-term reliability and burn-in tests can be automated and unattended. STARS supports independent source channel startup and shutdown, allowing multiple LED batch runs on a single system for optimized throughput. Stand-alone STARPLOT plotting software provides a graphic view of voltage, current and temperature data to quickly identify and illustrate trends.

System Configuration Options

SpikeSafe DC Current Sources are available in a self-contained 2U rack-mountable chassis that holds one module, or in multi-module rack systems that house up to 8, 24 or 32 modules. Scalable, modular design enables easy system expansion for increased capacity or specialized test performance.

Vektrex 4A DC Current Source System Configuration Options
Vektrex DC Current Source System Configuration Options

Additional Features and Software

SpikeSafe Current Sources run on economical bulk DC power. Consult Vektrex to select the appropriate bulk power supply for your application.

SpikeSafe load protection continuously monitors voltage and current patterns and instantly shuts down drive when device anomalies are detected.

Optional SpikeSafe Test and Reliability Software (STARS) controls and monitors 1 to 32 SpikeSafe modules. STARS supports source setup, data logging, error monitoring, test timing, and power cycling.