Main technical parameters of the 2S518A zener diode:
• Rated stabilization voltage: 18 V at Ist 5 mA;
• Stabilization voltage spread: 16.2... 19.8 V;
• Temperature coefficient of stabilization voltage: 0.1%/°C;
• Temporary instability of the zener diode stabilization voltage: ±1.5%;
• Differential resistance of the zener diode: 200 Ohm at Ist 1 mA;
• Minimum permissible stabilization current: 1 mA;
• Maximum permissible stabilization current: 45 mA;
• Maximum permissible power dissipation on the zener diode: 1 W;
• Operating range of ambient temperature: -60... +125 °C.