MEC Board-to-Wire Connectors JST Automotive Connectors MEC Board-to-Wire Connectors are 0.50 terminal with 2.0mm pitch miniaturized, low-profile devices. The current rating is 2A, and the voltage rating is 14V. The JST Automotive Connectors MEC connectors temperature range is -40°C to +105°C (tin-plated) or -40°C to +125°C (gold-plated).