Samsung Electro-Mechanics CL21B105KOFNNWE

CL21B105KOFNNWE Samsung Electro-Mechanics Product Synopsis

The CL21B105KOFNNWE is a multilayer ceramic chip capacitor (MLCC) manufactured by Samsung Electro-Mechanics, specifically designed for surface mount applications. With a capacitance of 1μF, a rated voltage of 16V, and an X7R dielectric housed in a standard 0805 (2012 metric) package, this component plays a key role in noise filtering, decoupling, and signal smoothing in various electronic devices. The product supports high-speed automated placement and is optimized for volume applications in consumer electronics, industrial, and networking equipment.

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Design Features and Technical Parameters of CL21B105KOFNNWE

The Samsung Electro-Mechanics CL21B105KOFNNWE utilizes a ceramic body and multiple inner electrodes, typically employing a nickel barrier with tin-plated (Sn) end terminations. This construction provides excellent performance under both DC and AC operating conditions. Key technical specifications include:

Capacitance: 1μF

Dielectric Type: X7R, providing stable performance across a wide temperature range

Capacitance Tolerance: ±10%

Rated Voltage: 16V DC

Size: 0805 (2.0 × 1.25 mm, 2012 metric)

Structure: Multilayer arrangement for high capacitance in a compact form factor

Moisture Sensitivity Level: 1 (Unlimited)

The X7R dielectric ensures the capacitor remains effective from –55°C up to +125°C, with typical capacitance variation up to ±15% across this temperature range. The product is RoHS3 and REACH compliant, facilitating its use in global production environments.

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Reliability Metrics and Performance Attributes of CL21B105KOFNNWE

Reliability is a critical consideration for MLCCs, especially in environments subject to thermal and mechanical stress. The CL21B105KOFNNWE meets industry standards with its robust construction and has passed key tests for moisture resistance, operational endurance, and board bending stress:

Endurance: Durable under 150% of rated voltage during operational and life tests

Bending Resistance: Qualified for mechanical stability under PCB flexure; Samsung offers enhanced variants for applications requiring even higher bending strength

Moisture Resistance: Performs reliably under high humidity (up to 85%RH) and elevated temperature conditions

Dielectric Loss (DF): The dissipation factor is reliably low, ensuring efficiency in filter and timing applications

Insulation Resistance: Maintains high insulation resistance for charge retention and noise suppression

Capacitance Aging: As a Class II ceramic (X7R), slight, predictable capacitance aging occurs and must be considered in high-precision applications

Samsung’s implementation ensures that the capacitor supports high-speed automated PCB placement, which is imperative for mass production processes, supporting both consumer and industrial grade systems.

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Usage Examples for CL21B105KOFNNWE

The versatility of the CL21B105KOFNNWE makes it suitable for a broad range of modern electronics. Recommended application areas include:

Consumer Electronics: Smartphones, tablets, PCs, game consoles, and displays

Power Delivery: DC-DC converters and power management modules

Networking: Base stations, network equipment, and servers requiring stable high-density capacitors for reliability and signal integrity

Industrial: Devices exposed to moderate thermal and mechanical loads, where stability and board real estate are important

The 0805 package size allows for high-density placement, making it a good fit for designs where PCB space and weight are at a premium.

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Special Editions and Solution Alternatives in the CL21 Product Line

The CL21 series by Samsung Electro-Mechanics is not limited to the standard variant but includes numerous specialized configuration options to address specific engineering challenges:

High Reliability Types: High Level I and II variants for enhanced endurance in industrial and outdoor environments

High Bending Strength Models: For areas subject to extreme flexure and vibration, such as automotive or power modules

Low Acoustic Noise Types: To mitigate audible noise due to the piezoelectric effect in high-frequency circuits

Low ESL (Equivalent Series Inductance) Versions: Essential for noise-sensitive, high-speed digital circuits and reduced mounting area requirements

Land Side Capacitors: Thin-profile, land-pattern variants suitable for integration in modules and wearables

Selecting the correct CL21 variant allows engineers to closely tailor performance to meet environmental, reliability, and noise immunity demands.

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Environmental Standards and Packaging Information for CL21B105KOFNNWE

CL21B105KOFNNWE capacitors are manufactured in compliance with RoHS3 and REACH directives and are classified as EAR99 for export control (not controlled under anti-terrorism regulations). The product offers:

MSL 1 (unlimited floor life at ≤30°C/85% RH) for safe process handling

Variety of tape, reel, and box packaging to suit automatic assembly lines (in accordance with IEC 60286-3 standards)

Standard labeling indicating manufacturer, part number, capacitance, lot, and traceability

Storage is recommended at 0–40°C, ≤70% RH, within six months of manufacture for optimal solderability and performance.

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Primary Engineering Factors for CL21B105KOFNNWE

When designing with the Samsung Electro-Mechanics CL21B105KOFNNWE, engineers should consider several best practices:

Capacitance and Bias: The capacitance of X7R ceramics decreases with high applied voltage (DC bias effect)—design for worst-case scenarios

Placement and Handling: Avoid mechanical stress during automated or manual placement; adhere to recommended PCB land patterns

Soldering: Follow manufacturer guidelines for reflow and wave soldering profiles to prevent cracks due to thermal shock

Aging and Temperature: Account for capacitance drift across product lifetime and temperature swings, especially in timing and analog signal path applications

Circuit Protection: High-reliability circuits should include provisions such as fusing to mitigate risks of shorts due to component failure

Evaluating system-level requirements, real-world operating conditions, and board design geometry is crucial to maximizing capacitor reliability and longevity.

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Possible Substitute or Equivalent Models for CL21B105KOFNNWE

For engineers and procurement specialists, having alternative sources is essential. Potential equivalency can be considered among Samsung’s own CL21 series and from other MLCC manufacturers offering:

1μF, 16V, X7R, 0805 (2012 metric) MLCCs

RoHS/REACH compliance and MSL 1 rating

Comparable tolerance and endurance specifications (±10% tolerance, –55°C to +125°C temperature range)

Review data sheets for specific equivalent models from Murata (e.g., GRM21BR71C105KA01L), TDK (e.g., C2012X7R1C105K), or Yageo to confirm critical parameters such as IR, ESR, and DC bias characteristic are matched for your application. Always conduct qualification and reliability checks when specifying cross-vendor substitutions.

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Conclusion

on CL21B105KOFNNWE Implementation

The Samsung Electro-Mechanics CL21B105KOFNNWE stands out as a robust, versatile surface-mount capacitor suitable for a wide range of volume electronics and industrial applications. Its balance between capacitance, voltage rating, reliability, and mounting flexibility caters to both standard and high-reliability requirements. With suitable variant choices, compliance with global standards, and detailed engineering support, it provides design engineers and purchasers with a dependable option for modern electronic systems. For applications requiring precise performance, always apply best engineering practices regarding placement, soldering, and in-circuit validation to ensure maximum performance and lifetime.