CL10B104KB8NNNC 100nF Ceramic Capacitor for Everyday Circuit Decoupling

ElecSuppliers Part Number GuideAug 26, 2026

CL10B104KB8NNNC is a multilayer ceramic capacitor designed for compact electronic circuits where stable local decoupling and filtering are required. The part number identifies a specific capacitor configuration rather than simply a generic 100nF component, making the complete model important when matching an existing PCB design or BOM.

With its small surface-mount construction, CL10B104KB8NNNC can be used in densely populated electronic equipment where individual power and signal circuits need local capacitance without consuming significant board space.

CL10B104KB8NNNC Capacitance Value

The 104 marking in the part number corresponds to a nominal capacitance of 100nF.

This value is widely used for local supply bypassing because it provides a practical balance between capacitance, package size and high-frequency response.

A 100nF capacitor is often placed close to the supply pins of integrated circuits. When an IC changes its operating state, the nearby capacitor can provide a short local current path and help reduce rapid voltage fluctuations on the power rail.

That makes CL10B104KB8NNNC particularly relevant to the small bypass capacitors found throughout digital and mixed-signal PCBs.

Why 100nF Is Commonly Used Near ICs

An electronic system may contain dozens or even hundreds of active devices.

Each device can generate short-duration changes in current consumption.

If the power connection between the IC and the main supply has significant inductance, the supply voltage at the IC can momentarily move away from its desired level.

A local ceramic capacitor helps address this problem by storing a small amount of electrical energy close to the load.

The effectiveness of the capacitor depends heavily on placement.

A theoretically suitable capacitor positioned far away from the IC may provide less effective high-frequency decoupling than the same capacitor located directly beside the relevant power pins.

The Ceramic Construction Suits High-Frequency Decoupling

Multilayer ceramic capacitors are widely used for high-frequency bypassing because of their low physical size and low parasitic characteristics.

CL10B104KB8NNNC is therefore better understood as part of the local power-distribution network rather than as a bulk energy-storage component.

For a PCB, larger electrolytic or polymer capacitors may handle slower changes and bulk energy requirements, while small ceramic capacitors such as CL10B104KB8NNNC can be distributed close to individual ICs.

Using several capacitor types in the same power system is often more practical than expecting one capacitor to handle every frequency range.

Understanding the CL10B104KB8NNNC Part Number

The complete part number contains information that helps distinguish this capacitor from visually similar components.

The CL10 designation identifies the component series and package family.

The 104 portion identifies the 100nF capacitance value.

The remaining characters distinguish characteristics such as tolerance and dielectric or ordering configuration.

This is why replacing CL10B104KB8NNNC with another component based only on its 100nF value can be risky.

Voltage rating, dielectric behavior, package dimensions and tolerance can all affect whether a substitute is appropriate.

Capacitance Tolerance Matters in Precision Circuits

For ordinary decoupling, a small difference between nominal and actual capacitance may have little practical impact.

Some circuits are more sensitive.

Timing networks, filters and analog signal paths may depend on a specific capacitance value and tolerance.

In those situations, the tolerance represented by the complete CL10B104KB8NNNC specification should be checked against the circuit requirement.

A capacitor should not be selected solely by reading "100nF" on the schematic.

DC Bias Can Change Effective Capacitance

Ceramic capacitors can exhibit changes in effective capacitance when a DC voltage is applied.

The effect depends on the dielectric material, rated voltage, package size and operating conditions.

This is especially important for compact multilayer ceramic capacitors because their small physical size can be associated with stronger capacitance variation under certain conditions.

For a simple bypass application, the remaining capacitance may still be more than adequate.

For a circuit where the exact capacitance is important, the effective capacitance under the actual operating voltage should be considered.

PCB Placement Can Be More Important Than Increasing Capacitance

A common mistake is to respond to supply noise by simply selecting a larger capacitor.

Increasing capacitance does not automatically solve a high-frequency power-integrity problem.

The connection between the capacitor and IC introduces parasitic inductance.

Long traces can reduce the capacitor's ability to respond quickly to transient current demands.

For CL10B104KB8NNNC used as an IC bypass capacitor, the shortest practical connection between the capacitor and the relevant power and ground nodes is generally preferred.

CL10B104KB8NNNC in Digital Circuits

Digital ICs can produce rapid changes in current as internal logic switches.

Microcontrollers, processors, memory devices and interface circuits can all create transient demands on their power rails.

A local 100nF ceramic capacitor can be used to provide high-frequency bypassing close to these devices.

This does not mean that every digital IC requires exactly one 100nF capacitor.

The final decoupling network should be determined by the device requirements, power architecture and PCB layout.

Mixed-Signal Boards Need Extra Attention

On a mixed-signal PCB, digital and analog circuits may share portions of the same power system.

Noise from digital switching can affect sensitive analog sections if the power distribution is poorly controlled.

Small ceramic capacitors can be placed close to individual devices to help manage local supply disturbances.

For CL10B104KB8NNNC, the most useful application may therefore be very simple: providing local high-frequency bypassing where a compact 100nF ceramic capacitor is required.

The component itself does not replace good grounding or power-plane design.

Automatic Assembly and Compact PCB Layout

The surface-mount form of CL10B104KB8NNNC makes it suitable for automated PCB assembly.

Its compact package allows designers to place multiple capacitors around a board without consuming the space required by larger through-hole components.

This becomes increasingly useful as PCB designs move toward smaller products and higher component density.

At the same time, small components can be more difficult to inspect manually.

Production designs should therefore consider placement accuracy, solder quality and inspection requirements during the component-selection stage.

Choosing a Replacement for CL10B104KB8NNNC

If CL10B104KB8NNNC becomes unavailable, a replacement should not be chosen simply by searching for a 100nF ceramic capacitor.

The substitute should be checked for capacitance, tolerance, dielectric characteristics, voltage rating, package size and mounting compatibility.

The circuit's actual operating voltage should also be considered because the effective capacitance of ceramic capacitors can vary under DC bias.

For a high-volume product, the replacement should be validated on the actual PCB rather than approved solely from a component comparison list.

Where CL10B104KB8NNNC Fits Best

CL10B104KB8NNNC is particularly relevant to the large number of small capacitors used throughout modern electronic equipment.

It can support local IC decoupling, power-rail filtering and other general-purpose applications where a compact 100nF ceramic capacitor is required.

Its value is not based on being a complicated component. In fact, its usefulness comes from solving a very common PCB problem with a small, inexpensive and easily integrated component.

For engineers sourcing CL10B104KB8NNNC, the important point is to preserve the complete electrical and mechanical specification rather than treating every 100nF ceramic capacitor as interchangeable.