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LED
Stress Systems
LED
Stress System Data Sheet (PDF)
Vektrex’s
SpikeSafe high power LED stress systems provide source drive current, thermal
control and data management for high-volume LED test applications. With up to
5A drive current per channel and 200V compliance, these systems are capable of
driving thousands of LEDs in series circuits. Applications include longterm
reliability testing, production burn-in, and thermal stress testing.
When LEDs fail,
the instantaneous forward voltage, Vf, changes. This change can cause current
through the device and others in the same series circuit to spike upward,
often destroying the faulty device and others in the circuit. Spike damage can
skew reliability data and eliminate the ability to do failure analysis on
faulty devices. Vektrex’s unique SpikeSafe protection circuitry eliminates
current spikes by shutting down drive at the early onset of a failure. This
rapid shutdown prevents secondary failures. In many cases the faulty LED is
also preserved in working condition.
The Vektrex
SpikeSafe systems convert roughly 90% of input power to LED drive power. This
high efficiency eliminates the need for expensive water-cooling and it reduces
your electricity costs.
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