1N985B

Diodes - Zener - Single

The 1N985B is a single Zener diode designed specifically for use in voltage regulation, voltage clamping and circuit protection applications. It is an efficient, cost effective solution to provide a stable, accurate reference voltage. This diode offers an ultra wide operating current range of 10 mA up to 1.2 A with a maximum voltage drop of 8.2 V. It operates in a temperature range of -65°C to 175°C.

Application Field

The 1N985B has a wide range of applications in both commercial and industrial applications. It can be used in voltage regulation, voltage clamping and circuit protection. Its short response time and low response time makes it ideal for protecting sensitive electronic circuits from high voltage transients, such as those generated from electrostatic discharge (ESD). It is also well suited for high-efficiency battery backup systems and as a voltage reference for DC/DC converters.

Working Principle

The 1N985B utilizes the Zener effect, which states that when the PN junction of a diode is reversed biased and the voltage is greater than the Zener breakdown voltage, a constant voltage can be observed across the PN junction. This voltage remains constant and is not dependant on the amount of current. The 1N985B takes advantage of this principle and uses a Zener junction to regulate and maintain a constant voltage over a wide range of currents and temperatures.

The 1N985B is designed to protect sensitive electronic components from high voltage transients by absorbing them, allowing them to “clamp” voltage spikes at the diode’s breakdown voltage. This prevents the voltage spike from propagating through the system and damaging other components. In addition, the Zener junction’s reverse saturation current, combined with its avalanche voltage, ensures a low response time compared to traditional linear or switching regulators.

Conclusion

The 1N985B is a versatile, cost-effective diode that can be used in a wide range of applications from circuit protection to voltage regulation. Its wide operating current range and low response time, combined with its high avalanche voltage, make it an ideal choice for protecting sensitive electronic circuits. The 1N985B is a dependable and efficient solution to many electrical engineering problems.