Atometrics One-Click Image Dimension Measuring Instrument: Realizes Fast and Accurate Detection of MLCC Dimensions | Industry Applications

MLCC is a ceramic capacitor commonly used in the electronics industry. Its size affects the physical footprint, electrical performance, and reliability, so MLCC size control is critical to product quality.

Here, Dr. Atometrics introduces the overview of MLCC and the MLCC size fast measurement solution.

1. MLCC Overview

MLCC (Multi-layer Ceramic Capacitors) is a very common capacitor used in the electronics industry. It consists of a multilayer ceramic dielectric diaphragm printed with internal electrode slurry, which is then stacked and sintered at high temperature to form a ceramic chip. A metal layer (external electrode) is sealed at both ends of the chip.

MLCC

Took by Atometrics AH-3000 series digital microscope

2. Importance of MLCC Size

The size of MLCC (multilayer ceramic capacitor) is usually represented by a four-digit code.

The first two digits represent the length, and the last two digits represent the width. For example, the MLCC of "0805" means the length is 0.08 inches and the width is 0.05 inches.

MLCC0805

1. The size of the MLCC not only determines the physical space occupied by the capacitor, but also affects its electrical performance and reliability.

• Capacitance: With the same material and voltage level, larger size generally provides greater capacitance.

• Self-resonant frequency: Larger MLCCs may have lower self-resonant frequencies, which is an important consideration in high-frequency applications.

• Withstand voltage: Larger MLCCs can withstand higher voltages.

• Reliability and durability: Large size allows more space to design complex internal structures, which may provide better reliability and durability.

• Mounting and layout: Smaller MLCCs are suitable for high-density circuit board designs.

• Temperature characteristics: Larger MLCCs may have better temperature stability because they have more material to disperse heat.

2. MLCC size control is critical to ensuring product quality, performance and reliability.

• MLCC dimensions: length L, width W, height H, which need to be accurately measured to ensure compliance with nominal dimensions and design requirements.

• Electrode dimensions: The dimensions of the MLCC terminal electrodes A/B, which affect their soldering performance and electrical connection with the PCB.

3. MLCC Size Measurement Solution

The size consistency between each MLCC can ensure the reliability of the product and ensure its compatibility in the automated assembly process. If the size does not match, it will be stuck when it is loaded into the material belt, which will greatly hinder the subsequent automated SMT placement.

Terminal thickness & profile angle R: The thickness D and profile angle R of the MLCC terminal affect its mechanical strength and stability after installation.

Therefore, in order to ensure the dimensional consistency of MLCC products, manufacturers need to conduct batch dimensional inspection of MLCC.

Atometrics Image dimension measurement system FM9000 Series: It can instantly complete the MLCC geometric dimension measurement, make OK/NG judgments, and improve product yield.

Multiple products can be measured simultaneously, and the inspection can be completed instantly, with automatic OK/NG judgment.

Only take pictures of the location of the MLCC and measure only this area;

You can place it at will, the platform intelligently selects the best path, automatically searches and switches the lens, and measures at the fastest speed.

Because MLCC size has a great impact on product quality, quality inspection is essential.

Many manufacturers face problems such as difficulty in recruiting quality inspectors, large differences in measurement results between different personnel, and long measurement time.

The FM-9000 series of Atometrics Image dimension measurement system: It can be placed anywhere for instant, accurate, fast, and batch measurement. It is the optimal solution to solve the problem of MLCC geometric size measurement, helping you improve product yield and output!

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