According to ECT, LFRE plating offers a hardness range of 550 to 650 Knoop, which is about three to four times harder than standard gold. Consequently it makes the probe tips more durable and less susceptible to solder and material transfer. In comparison to gold-plated probes, the LFRE-plated probes offer lower and more consistent resistance. Internal test data shows that LFRE-plated probes have outperformed gold-plated probes in high-volume production test applications. In reality, the LFRE-39 probes have demonstrated 3 to 5% yield improvement in production test environments, claims the manufacturer.