I²t and Peak Let-Through: Mastering Semiconductor Fuse Selection

<p><span class="ng-star-inserted">GFEFUSE is a trusted expert because we specialize in the advanced engineering required for these devices. We utilize pure silver elements, sophisticated arc-quenching technology, and rigorous testing to guarantee every&nbsp;</span><strong class="ng-star-inserted"><span class="ng-star-inserted">semiconductor fuse</span></strong><span class="ng-star-inserted">&nbsp;provides the ultra-fast performance and low I&sup2;t values needed to reliably protect the most sensitive and expensive power electronic components.</span></p>

<p><span class="ng-star-inserted">No, they are crucial for both AC and DC circuits. A&nbsp;</span><strong class="ng-star-inserted"><span class="ng-star-inserted">semiconductor fuse</span></strong><span class="ng-star-inserted">&nbsp;is essential for protecting the input of an AC drive, the DC bus link inside the drive, and the output of DC power supplies and rectifiers. GFEFUSE offers a wide range of fuses with high AC and DC voltage ratings.</span></p>

<p><span class="ng-star-inserted">These are IEC designations for a&nbsp;</span><strong class="ng-star-inserted"><span class="ng-star-inserted">semiconductor fuse</span></strong><span class="ng-star-inserted">. "aR" stands for "partial-range" protection, meaning it offers extremely fast protection against short circuits only and must be paired with another device for overload protection. "gS" or "gR" stands for "full-range" protection, meaning the fuse will safely open on both short circuits and lower-level overload currents.</span></p>

<p>The single most important specification is the clearing I&sup2;t rating. This value represents the total thermal energy the fuse lets through before it clears a fault. This fuse I&sup2;t value must be lower than the I&sup2;t withstand rating of the semiconductor being protected to ensure the fuse blows before the semiconductor is damaged.</p>

<p><span class="ng-star-inserted">You cannot use a regular fuse because it is far too slow. A semiconductor can be destroyed by thermal energy in less than a millisecond. A&nbsp;</span><strong class="ng-star-inserted"><span class="ng-star-inserted">semiconductor fuse</span></strong><span class="ng-star-inserted">&nbsp;is designed to open the circuit in microseconds and, more importantly, to limit the peak current, preventing the destructive energy from ever reaching the component it protects.</span></p>

<p><span class="ng-star-inserted">A&nbsp;</span><strong class="ng-star-inserted"><span class="ng-star-inserted">semiconductor fuse</span></strong><span class="ng-star-inserted">&nbsp;is an extremely fast-acting, high-speed fuse designed to provide short-circuit protection for sensitive solid-state electronic devices, such as diodes, SCRs (Silicon Controlled Rectifiers), and IGBTs (Insulated Gate Bipolar Transistors), which are found in inverters, VFDs, and rectifiers.</span></p>