GRM21BR61E106KA73L 10uF X5R MLCC for Power Supply and Decoupling

ElecSuppliers Part Number GuideAug 15, 2026

The GRM21BR61E106KA73L is a Murata multilayer ceramic capacitor from the GRM series. It is a 10uF X5R MLCC in a compact surface mount package and is aimed at the sort of power and decoupling work commonly found on modern PCBs.

A 10uF ceramic capacitor is often used when a circuit needs more local capacitance than the small 100nF bypass capacitors normally placed directly beside IC power pins.

That makes this part particularly relevant to power rails rather than signal coupling.

A 10uF Capacitor Has a Different Job

A 100nF capacitor and a 10uF capacitor may both appear next to an IC, but they are not normally serving exactly the same purpose.

The 10uF value provides considerably more capacitance and can help support short changes in load current on a power rail.

It is commonly used around regulators, converters and embedded processors where the supply current can change quickly.

Designers will often combine several capacitor values rather than expecting one component to handle every filtering requirement.

GRM21BR61E106KA73L in Power Circuits

This type of MLCC can be used at different points in a power network.

A voltage regulator may require an output capacitor. A DC DC converter may need local capacitance around its input or output. A processor board may also use several 10uF capacitors to divide the power distribution network into smaller sections.

The correct position depends on the circuit topology and the recommendations for the particular regulator or power IC.

X5R Dielectric

The X5R designation is important when selecting this component.

X5R ceramic capacitors are commonly used in power applications because they offer relatively high capacitance in a small surface mount package.

However, the nominal capacitance is not necessarily the capacitance the circuit will see under every operating condition.

With MLCCs, applied DC voltage can reduce the effective capacitance. The amount of reduction depends on the capacitor's construction and operating conditions.

For that reason, engineers should check the actual capacitance at the intended voltage when the design is sensitive to the available capacitance.

What the Part Number Tells You

The complete GRM21BR61E106KA73L number is useful because it distinguishes this capacitor from the many other Murata MLCCs with similar capacitance values.

The 106 portion identifies the 10uF capacitance value.

Other characters in the MPN identify the series and electrical or mechanical characteristics of the particular component.

This is why purchasing a generic "10uF ceramic capacitor" is not a reliable way to reproduce a production BOM.

PCB Placement Matters

When the capacitor is being used for power decoupling, placement should be considered during PCB layout.

A capacitor placed close to the relevant power and ground connections generally provides a shorter current path than one positioned farther away.

For switching regulators in particular, the recommended layout in the power IC documentation should be followed.

The correct land pattern and mounting conditions should also be used to avoid mechanical problems with the ceramic component.

Where GRM21BR61E106KA73L Can Be Used

Typical applications include:

• DC DC converters

• Voltage regulator circuits

• Processor power rails

• Embedded systems

• Industrial control boards

• Communication equipment

• Portable electronics

• General power filtering

The actual suitability depends on voltage, temperature, ripple current and the required effective capacitance.

Finding a Replacement

A replacement for GRM21BR61E106KA73L should be compared using more than its nominal 10uF value.

Voltage rating, dielectric, tolerance, package size and DC bias behavior can all affect whether another MLCC is suitable.

This is particularly important for regulator circuits. A replacement with the same printed capacitance may provide substantially different effective capacitance when the circuit is operating.

GRM21BR61E106KA73L Supplier Search

For purchasing, the complete GRM21BR61E106KA73L part number should be used.

This makes it easier to distinguish the required Murata component from other 10uF MLCCs with similar descriptions.

Before approving a supplier, buyers should confirm the exact MPN, manufacturer, package, electrical specifications, product status and available quantity.

For designers looking for a compact 10uF X5R MLCC for power filtering and decoupling, GRM21BR61E106KA73L is a practical component to evaluate against the requirements of the power circuit.