An object of the disclosure is to provide a compact RC triggered ESD clamp, which is used for fast ramp supplies, and is immune to parasitics, process, temperature variations, and a noisy environment. A further object of the disclosure is to provide an ESD clamp circuit with low power consumption, and which is robust against reliability or burnout failures. A further object of the disclosure is that the short time constant and the long time constant are realized using a single capacitor, charged by two separate resistors. Still further, another object of the disclosure is that the elements are connected in such a way that there are no additional active junctions connected to the charging node of the ESD clamp.