The 140-100N5-4 series from Xicon Enterprise Co., Ltd. consists of 100V ceramic disc capacitors with NP0 temperature coefficient. These capacitors are designed for precision applications where stability under temperature variations is critical. If you're working on circuits that require high-frequency performance or need to maintain capacitance stability over a wide temperature range, these could be a good fit. One thing worth noting is their excellent tolerance to environmental conditions—ideal for industrial and automotive applications where reliability is paramount. Engineers tend to reach for this when they need a capacitor that can handle a broad temperature span without significant drift, ensuring consistent circuit performance. The NP0 designation means these capacitors exhibit minimal capacitance variation with temperature, making them suitable for RF tuning circuits, oscillator circuits, and any application where precise capacitance is essential.