CDCLD Current Regulator Diodes Central Semiconductor CDCLD Current Regulator Diodes are specifically designed for applications requiring constant current regulation. These diodes are designed with a unique process that maintains a constant current over a broad temperature range. The zero temperature coefficient feature eliminates the need for additional resistors to compensate for variation in the current limit that results from changes in temperature. The regulator current values range from 27.5mA to 575mA with a maximum limiting voltage (VL) ranging from 1.5V to 2V. These current regulator diodes are optimized for heat dissipation and offer nominal current regulation at low voltage input.