The MS32 series from Ametherm, Inc., is a lineup of radial NTC (Negative Temperature Coefficient) thermistors designed specifically for inrush current limiting in electronic circuits. These components are commonly found in power supplies, LED lighting, and other electronic devices where controlling the initial surge of current during startup is crucial for protecting the circuit and extending component life.

If you're working on any project involving high-power switching power supplies or LED arrays, these thermistors can be a valuable addition. They help limit the inrush current by initially having a low resistance that decreases as the temperature rises due to the current flowing through them. This characteristic ensures that the initial surge of current is reduced, which is especially important in circuits with large capacitors that can draw significant current during startup.

One thing worth noting is that these thermistors are particularly useful in scenarios where the system might experience multiple power cycles or where the circuit is sensitive to voltage drops. They offer a simple yet effective solution without the need for complex control circuits or additional components. Engineers tend to reach for this when they need a straightforward way to manage inrush currents without compromising the overall design simplicity.