Thin Polymer Aluminum Cap
Ultra-thin polymer aluminum electrolytic capacitors (SZ CAPs) are a new type of solid-state capacitor that utilizes a multi-layered aluminum foil structure as the anode and a solid conductive polymer as the cathode. This design achieves characteristics of low ESR, low impedance, and high capacitance. These products are suitable for input and output current filtering in various power supply circuits, as well as serving as backup devices when load changes in CPU peripherals exceed the range. Their advantage lies in helping to reduce the number of components and saving substrate space.
Structure and Working Principle:
Structure
Anode: Aluminum foil
Dielectric: Aluminum oxide insulation layer on the surface of the aluminum foil (formed by an electrolytic process)
Cathode: Conductive polymer
Packaging: Epoxy resin and silver paste (square structure)
Working Principle
Stores charge through dielectric polarization.
The conductive polymer material gives SZ CAPs lower equivalent series resistance (ESR) and more stable capacitance at high frequencies.
Key Features and Advantages:
Miniaturization:
Compact size, suitable for high-density circuit design.
The ultra-thin thickness advantage, can be attached to the back of the PCB, which can increase the heat dissipation space of the board surface.
Excellent High-Frequency Characteristics:
ESR is lower than tantalum capacitors and liquid aluminum electrolytic capacitors in the 10KHz~20MHz range.
High-Temperature Performance:
Can operate for 2000 hours at 105℃, suitable for high-temperature environments.
High Safety:
Does not explode or burn in case of failure, safer than tantalum capacitors.
Other Advantages:
No reverse piezoelectric effect, can replace MLCC components, avoiding noise or micro-vibration.
Large capacitance per unit, reducing the number of parts used and saving costs.
Application Areas:
Consumer Electronics:Mobile phones, laptops, tablets, etc.
Industrial Control:Servers, communication base stations, industrial motherboards, etc. (stable power supply filtering and decoupling functions).
5G and the Internet of Things (IoT):5G small base stations, IoT devices (high frequency and high capacity requirements).
