4A SpikeSafe Source Measure Unit

The 4A SpikeSafe Source Measure Unit is part of the SpikeSafe Source Measure Unit Family. It supplies precision DC, continuous pulse, and single pulse current with minimum pulse widths of 1us. Output pulses have microsecond rise and fall times – key to precise LED photometric and electrical measurements. Programmable load tuning alters the SpikeSafe 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.

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. The 4A SpikeSafe Source Measure Unit 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 current source are as follows: the low range output current accuracy is 0.04%+175µA. The high range output current accuracy is 0.08%+1mA. The pulse width range is 1µs-15000s and 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 current source. Learn more about Control Panel here.

4A Source Pulse Shapes

Precision pulsing is key to best practices measurements. The 4A SpikeSafe Source Measure Unit offers programmable pulse width flexibility. It is capable of long pulse widths (ms to seconds) and short pulse widths (100us pulse widths and faster). With the pulse source, minimum 10us pulse widths are available with upgrades for fast precision pulsing (1us pulse widths).

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 Units here.