This electronic part is a Current Limiting Diode manufactured by the company Diotec. The CL30MD has an operating voltage of 90V and passes a maximum current of 40mA. This device is usually used as a current regulator in electronic circuits, helping to regulate the flow of current in the circuit. Its MiniMELF form factor ensures that it can fit into tight spaces in electronic equipment, making it suitable for use in compact electronic devices.