Introduction of ES1FLHM2G

ES1FLHM2G is a rectifier diode with a built-in resistive element (<200 ohms at IF=2A) is a super low voltage, low current type of varistor diode. The current rating and the pre-breakdown voltage are both super low, so it is most suitable for the peak clamping of small low voltage and low current partial circuits.

Application fields of ES1FLHM2G

The application fields for ES1FLHM2G are relatively wide. Its peak clamping function deals with temporary overloads caused by various reasons such as an instantaneous current, voltage fluctuation terms and static electricity. For example, it is used in communication equipment and home appliance, or in the surge protection circuit in AC adapter, outlet and data line.

Working Principle of ES1FLHM2G

The ES1FLHM2G working principle is similar to other varistors. Its main component is a sintered semiconductor. Its breakdown voltage is determined by the diameter of ITO (Indium tin oxide) particles. The thinner the particle, the lower the breakdown voltage.

When the voltage is below the breakdown voltage U_G, the ES1FLHM2G is off and behaves like an open circuit. When the voltage exceeds U_G, the varistor becomes conductive and acts like a low resistance instead of an open circuit. As voltage increases, current rises exponentially and reaches its maximum rated current.

The varistor shape of the ES1FLHM2G diode fundamentally changes the characteristics of the diode. It allows the diode to dissipate power effectively, preventing the diode from being damaged due to overheating. The built-in resistive element also helps reduce the current flow to a safe and acceptable level, protecting the varistor from more severe overloads.