500mA SpikeSafe Source Measure Unit

The SpikeSafe™ 500mA Source Measure Unit supplies precision DC, continuous pulse, and single pulse current with excellent pulse fidelity. The resulting pulses have nanosecond rise and fall times – key to accurate LED, VCSEL, and Laser Diode measurements. A precision hardware-controlled timing system supports pulse widths from 1µs to 15000s. Programmable load tuning alters the SpikeSafe current regulator response to compensate for load conditions, cable impedance, and length. Hardware triggering ensures measurement repeatability. Continuous power conversion technology means no duty cycle or pulse width limitations.

The 500mA model will accurately drive and pulse current into the microamp range. An optional bias current module supports junction temperature (Tj), thermal resistance (RΘ), and dynamic thermal impedance measurements.

Devices being tested are protected with a gentle turn-on during ramp-up and with SpikeSafe load protection during operation. SpikeSafe load protection continuously monitors voltage and current patterns and instantly shuts down the drive current when device anomalies are detected.

The notable specifications for this source measure unit are as follows: the low range output current accuracy is 0.05%+10µA. The high range output current accuracy is 0.05%+75µA. The pulse width accuracy is 1µs. The pulse rise/fall time is 200ns-3µs and the typical pulse width jitter is 30ns. 

The Control Panel Software Application is available with this source measure unit. Learn more about Control Panel here

500mA Source Pulse Shapes

Precision Pulsing is key to best practices testing criteria. The 500mA Source Measure Unit offers pulse width flexibility, ms pulse widths, 100us pulse widths, 10us pulse widths and upgrades for fast precision pulsing (1uS pulse widths). Pulse width accuracy is 1uS with pulse rise and fall times of 200ns to 3uS. Ramp time is adjustable based upon device characteristics. 

Performance Curves

This model includes buck/boost and is available for use with an internal power supply (300W or 600W). For total output power across 8 source channels (8 x 200W = 1,600W), an auxiliary power supply is required. Please consult Vektrex for auxiliary power supply recommendations.

Learn more about our SpikeSafe Source Measure Unit here.