KRM55QR72A106KH01L

Murata KRM55QR72A106KH01L — 10 µF, 100 V, X7R Stacked MLCC (2220)

The Murata KRM55QR72A106KH01L is a stacked multilayer ceramic capacitor (MLCC) designed for high-capacitance, high-voltage applications in a compact surface-mount form factor. As part of Murata’s KRM series, this 10 µF ±10% capacitor uses an X7R dielectric and is rated for 100 VDC, making it a strong candidate for bulk energy storage, decoupling, and smoothing on higher-voltage rails. Housed in a 2220 (5750 metric) footprint with an approximate 3.7 mm stack height, the KRM55QR72A106KH01L balances volumetric efficiency with robust performance over a wide temperature range.

For engineers, buyers, and sourcing managers, the Murata KRM55QR72A106KH01L provides a straightforward path to achieving high capacitance at 100 V in standard SMT assembly flows—without resorting to larger film or electrolytic capacitors. This page consolidates the essential details to help you evaluate, specify, and source the part with minimal back-and-forth.

Quick Highlights

MPN/Brand: Murata KRM55QR72A106KH01L (KRM series)
Capacitance and Voltage: 10 µF at 100 VDC
Dielectric and Tolerance: X7R, ±10%
Package: 2220 (5750 metric) SMD/SMT; approx. 3.7 mm stack height
Operating Temperature: -55°C to +125°C
Mounting: Surface mount, 2 terminals

Why Choose the Murata KRM55QR72A106KH01L

High capacitance at 100 V in a compact footprint

Achieving 10 µF at 100 V in a standard 2220 footprint is non-trivial with conventional single-piece MLCCs. The KRM stacked construction enables a higher effective capacitance while keeping board area small and leveraging typical SMT assembly processes. The result: fewer parallel parts, simplified layouts, and potential BOM consolidation on high-voltage rails.

X7R dielectric for broad operating conditions

X7R is a Class II dielectric formulated for stable operation from -55°C to +125°C, making it suitable for industrial, instrumentation, and power-conversion environments. While X7R exhibits voltage and temperature dependence typical of Class II ceramics, it offers an excellent balance of size, capacitance density, and stability for decoupling, bypass, and energy storage roles.

Stacked MLCC construction

Stacked MLCCs increase capacitance density by layering multiple ceramic elements. In this device, the stacked approach yields a practical path to 10 µF at 100 V without moving to larger components or different technologies. The approximate 3.7 mm stack height is a key mechanical consideration for enclosure and z-height constraints.

Detailed Specifications

Manufacturer: Murata Manufacturing Co., Ltd.
Series: KRM
MPN: KRM55QR72A106KH01L
Category: Capacitors > Multilayer Ceramic (MLCC) > Stacked
Capacitance: 10 µF
Voltage Rating: 100 VDC
Tolerance: ±10%
Dielectric: X7R (Class II)
Construction: Stacked Multilayer Ceramic
Case Size (Imperial): 2220
Case Size (Metric): 5750
Approximate Stack Height: 3.7 mm
Mounting: Surface Mount
Number of Terminals: 2
Operating Temperature Range: -55°C to +125°C
Dimensions (L × W): 5.7 mm × 5.0 mm (typ.)
RoHS/Environmental: Not specified in datasheet
Lifecycle Status: Not specified in datasheet

Note: Always verify the latest ratings and any additional parameters (e.g., insulation resistance, dissipation factor, test conditions, termination finish, packaging) in the official Murata datasheet.

Applications and Use Cases

The Murata KRM55QR72A106KH01L is well-suited for:

Decoupling/Bypass of high-voltage ICs and modules
Bulk energy storage on 48–100 V DC rails (within rated voltage)
Output smoothing in DC/DC power conversion stages
High-side driver and gate-drive supply buffering
Industrial control, factory automation, and instrumentation
LED lighting and signage power systems with elevated bus voltages
Communications and networking equipment with distributed high-voltage rails

Designers leverage this part when they need a true SMT 10 µF at 100 V in a board-friendly 2220 footprint, especially where space and assembly standardization matter.

Package, Footprint, and Mechanical Considerations

2220 (5750 metric) with ~3.7 mm stack height

Footprint size: 5.7 mm × 5.0 mm (typ.) supports dense layouts on power and control boards.
Z-height: Approximately 3.7 mm; confirm mechanical clearance in enclosures or under shields.

Assembly and PCB layout tips

Reflow soldering: Follow Murata’s recommended reflow profile. Avoid exceeding thermal limits to prevent dielectric damage or termination stress.
Pad design: Align with Murata land pattern guidance for 2220 MLCCs and your PCB fabrication rules. Proper pad sizing aids wetting and helps mitigate tombstoning/tilting.
Board flex mitigation: Taller stacked capacitors can be more susceptible to mechanical stress. Place away from board edges, mounting holes, and scoring lines; consider layout strategies that reduce bending stress.
Cleaning and handling: Use ESD-safe handling and compatible cleaning solvents. Avoid aggressive mechanical cleaning that could stress ceramic bodies.

Electrical Behavior Notes for X7R Stacked MLCCs

DC bias dependence: As with most Class II dielectrics, effective capacitance can decrease as applied DC voltage increases. When using the full 100 V rating, evaluate the capacitance under bias to ensure it meets system requirements.
Temperature characteristics: X7R supports -55°C to +125°C operation; expect modest capacitance variation across the temperature range typical of X7R formulations.
AC ripple and self-heating: Ripple current induces self-heating; ensure the capacitor remains within allowable temperature limits across operational conditions.
Derating practices: Many teams apply voltage and temperature derating for added reliability margin in power and industrial designs. Establish derating per your internal standards and confirm with Murata’s datasheet guidance.

These behaviors are normal for X7R MLCCs and should be incorporated early into simulations and worst-case analyses.

Sourcing, Lifecycle, and Replacement Guidance

Lifecycle status: Not specified in datasheet. Consult the Murata product page for the latest status and recommended replacements if applicable.
RoHS/Environmental: Not specified in datasheet. Check the Murata product detail page for compliance statements and documentation.
Series continuity: The KRM series targets high-capacitance, stacked MLCC use cases. For second-source planning, start by staying within the KRM family at the same case size, voltage rating, dielectric, and tolerance. Validate electrical performance (capacitance under bias, ESR/ESL behavior, insulation resistance) to maintain system margins.
Suffix details: The full code “KRM55QR72A106KH01L” includes suffix elements that may denote tolerance, termination, and packaging variants. Always refer to the Murata datasheet/ordering guide to interpret suffix meanings correctly.
Availability and planning: Lead times for high-capacitance, high-voltage MLCCs can vary with market conditions. Consider safety stock, AVL approvals for equivalent variants, and early engagement with distribution for volume builds.

If a direct drop-in alternative is needed, use these decision points:
1) same footprint (2220),
2) 100 V rating or higher (per your derating rules),
3) 10 µF nominal with comparable tolerance,
4) X7R dielectric,
5) similar z-height, and
6) compatible termination/finish for your soldering process.

Design-In Checklist

Electrical target at operating bias: Confirm the effective capacitance at your operating DC bias and temperature.
Voltage margin: Ensure adequate headroom relative to the maximum applied voltage, per your derating policy.
Ripple environment: Verify thermal rise under expected ripple current and switching frequencies.
Mechanical constraints: Check the 3.7 mm height against enclosures, airflow paths, and keep-out zones.
Assembly profile: Align reflow profiles and land patterns with Murata guidance.
Reliability documentation: If required (e.g., for safety or industrial certs), obtain Murata quality and environmental files from the product page.

Frequently Asked Questions (FAQs)

What are the key ratings of the Murata KRM55QR72A106KH01L?

10 µF capacitance, 100 VDC rating, X7R dielectric, ±10% tolerance, in a 2220 package with approximately 3.7 mm stack height.

Is the KRM55QR72A106KH01L AEC‑Q200 qualified?

Not specified in datasheet. Check the official Murata product page for automotive qualification details if required.

What is the physical size and height?

The footprint is 5.7 mm × 5.0 mm (typical) in the 2220 case size. The approximate stack height is 3.7 mm.

Can I use this capacitor directly on a 100 V bus?

The part is rated for 100 VDC. Ensure your design accounts for DC bias effects on capacitance, any expected voltage transients, and appropriate derating per your internal standards.

What termination finish does this part use?

Not specified in datasheet. Refer to the Murata ordering guide for termination and plating details associated with this specific suffix.

What about RoHS and environmental compliance?

Not specified in datasheet. Consult the Murata product detail page for the latest compliance declarations.

Are there recommended alternatives if this exact code is unavailable?

Start with the Murata KRM series at 2220 case size, 100 V rating, 10 µF nominal, X7R dielectric, and similar tolerance/height. Validate electrical performance and mechanical fit before substitution.

Practical Application Examples

High-voltage DC/DC converters: Use as an output capacitor for smoothing and transient load handling on 72–100 V rails, ensuring bias-aware capacitance budgeting.
Industrial motor control: Buffer and decouple high-side driver supplies and control logic fed from elevated bus voltages.
Communications power shelves: Bulk decoupling on intermediate bus architectures that operate near 48–60 V with margin toward higher transient voltages.
LED lighting drivers: Filtering and energy storage on constant-current/constant-voltage stages with high-voltage outputs.

These examples illustrate typical use scenarios for a 10 µF, 100 V X7R stacked MLCC; always confirm suitability against your system requirements.

Summary

The Murata KRM55QR72A106KH01L is a robust, high-capacitance ceramic solution for designs that require 10 µF at 100 V in an SMT‑friendly 2220 case. Its X7R dielectric and stacked construction deliver practical density and a workable z‑height (~3.7 mm), making it ideal for decoupling, bypass, and energy storage roles across industrial and power-conversion applications. While detailed environmental and lifecycle data are not specified here, Murata’s product page and datasheet provide the latest particulars to finalize qualification and sourcing.

For engineers, the value lies in consolidating capacitance without large electrolytics; for buyers and sourcing managers, it’s the ability to meet performance targets with a standard SMT part from a top-tier manufacturer. When planned with bias, temperature, and mechanical considerations in mind, the KRM55QR72A106KH01L offers a clean, dependable path to high-voltage ceramic capacitance.

Resources

Murata Product Page: https://www.murata.com/en-us/products/productdetail?partno=KRM55QR72A106KH01L
Datasheet (PDF): https://search.murata.co.jp/Ceramy/en/productsearch/resultpdf?partno=KRM55QR72A106KH01L