KEMET C512B Ceramic High Reliability Capacitors

Category: Capacitors, Electronics, Kemet Electronics Corporation

Overview of KEMET Ceramic High Reliability Capacitors

KEMET Electronics Corporation is recognized as a leader in the production of high reliability monolithic ceramic capacitors. These capacitors are manufactured under rigorous control to achieve exceptional performance, which KEMET refers to as “State of the Art.” The production process emphasizes the selection of quality materials, conservative design principles, extensive employee training, and stringent inspection at every stage—culminating in the excellence of the finished product.

Key Requirements and Features

1. High-Quality Raw Materials: The capacitors are crafted using only the finest raw materials, ensuring the best electrical properties and physical integrity. Material traceability is consistently maintained.

2. Batch Homogeneity: Production is controlled on a batch basis, with each batch kept homogeneous in terms of materials, design, and processing conditions.

3. Clean Room Processing: Processes susceptible to particulate contamination occur within a clean room environment to ensure electrical stability.

4. Specialized Design: Designs are conscientiously overseen; for instance dielectric thickness is strictly controlled.

5. Destructive Physical Analysis: Batches undergo DPA sampling as a part of quality assurance, with reports included with shipped capacitors.

6. C-SAM Screening (Optional): Optional screening through C-Mode Surface Acoustical Microscopy may be conducted to check for voids or delaminations.

7. Batch Performance Monitoring: Electrical characteristics are monitored, and aberrant batches are rejected to ensure consistent performance.

8. Special Customer Requirements: Customization to meet specific customer requirements such as serialization and special packaging is possible.

Product Specifications

The datasheet details the two types of temperature characteristics available for these capacitors: COG (BP) and XZR (BX). The COG (BP) is made from non-ferroelectric ceramic materials, offering superior stability but lower packaging efficiency. XZR (BX) capacitors contain ferroelectric materials like barium titanate, enabling high stability and packaging efficiency. An aging process described for barium titanate dielectrics indicates a slow reversion to the tetragonal form, impacting the aging rate, which is influenced by temperature and voltage; COG formulations, being non-ferroelectric, do not exhibit aging.

Quality Control

KEMET enforces a comprehensive quality system encompassing their Quality Manual and various Quality Operating Documents. All such documents and revisions are subject to approval protocols, and customization of products is conducted in compliance with customer-specific modifications and KEMET’s standard procedures.