TFZVTR18B

TFZVTR18B Application Field and Working Principle

The TFZVTR18B is a single Zener diode with an anode-cathode voltage of 18 V. It has a maximum power dissipation of 2.2 W and is a type of diode conceptually related to the Zener diode. It is often used in voltage regulation applications and for protection against transients or voltage spikes.

Description

The TFZVTR18B is a silicon-based, unidirectional single Zener diode. It typically comes in a DO-214AB plastic encapsulation package and features easy-to-solder solderable terminals. It is designed to provide decent heat spreading and absolute stability over an operating temperature range of -65°C to 150°C. Its forward voltage drop at 0.1A is typically 1.3 V with a leakage current of just 0.01µA.

Applications

The TFZVTR18B is widely used in voltage regulation, precision references, clippers, and crowbar applications. It can be used as a relatively low-power voltage reference and is often used as a protector against transients or voltage spikes. It is also widely used in auto and mobile electronics, communications and data acquisition systems, and industrial and automotive equipment.

Working Principle

The working principle of the TFZVTR18B is based on the Zener effect. It is an avalanche voltage breakdown mechanism whereby an electric current is created in the reverse direction of a standard p-n junction by increasing the voltage above the Zener voltage. This voltage drop blocks the electric current and allows the device to regulate and maintain a constant voltage. The TFZVTR18B is designed to provide isolation and protection against transient overvoltages, which could otherwise damage sensitive electronic components connected to it.

Conclusion

The TFZVTR18B single Zener diode has a wide range of applications in voltage regulation, precision references, clippers, and crowbar applications. Its avalanche voltage breakdown mechanism allows it to provide decent heat spreading and absolute stability over an operating temperature range from -65°C to +150°C. Its main purpose is to provide isolation and protection against transient overvoltages, preventing damage to sensitive components connected to it.