We offer zener diodes values: 3V 3.3V 3.6V 3.9V 4.7V 5.1V 5.6V 6.2V 10V 12V 13V 15V 18V 27V 30V
All these zener diodes manage up to 1W of power. To compute the max current, please use the formula: I = 1/Voltage.
If you need to manage more power, combines this zener diode with a power stage. You can use a MOSFET or a BJT to manage the power at a constant voltage given by the zener voltage.