CL31B221KGFNNNE Equivalent & Substitute Parts

Part Overview

The CL31B221KGFNNNE is a 220 pF ceramic capacitor manufactured by Samsung Electro-Mechanics, rated for 500V with X7R temperature coefficient in 1206 (3216 Metric) surface mount package. This component is classified as Active product status with ROHS3 compliance and unlimited moisture sensitivity rating (MSL 1). The part is suitable for general purpose applications requiring stable capacitance across the operating temperature range of -55°C to 125°C. Substitute parts are identified when inventory constraints, lead time requirements, or specific application voltage margins necessitate alternative sourcing while maintaining functional compatibility within the allowed electrical and mechanical parameters.

Substiute Parts

CL31B221KGFNNNE

Samsung Electro-MechanicsIn Stock: 776CL31B221KGFNNNE Datasheet

Current PartRFQ

KGM31AR73A222KU

KYOCERA AVXIn Stock: 1122KGM31AR73A222KU Datasheet

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Key Parameters

Substitute Part Grouping Explanation

Substitute parts for the CL31B221KGFNNNE are identified based on strict adherence to the following allowed parameters:

Mandatory Matching Parameters:

• Package / Case: 1206 (3216 Metric) surface mount configuration
• Temperature Coefficient: X7R for consistent capacitance stability
• Mounting Type: Surface Mount, MLCC technology
• Operating Temperature Range: -55°C ~ 125°C minimum
• RoHS3 Compliance: Required for regulatory alignment
• MSL Rating: 1 (Unlimited) or equivalent

Allowable Variation Parameters:

• Capacitance: Substitutes may differ from 220 pF if functionally equivalent within application requirements
• Voltage Rating: Substitutes may exceed 500V rating; higher voltage ratings provide additional design margin
• Tolerance: Substitutes may equal or improve upon ±10% specification
• Packaging Format: May vary (Tape & Reel vs. bulk) without affecting electrical compatibility

The identified substitute KGM31AR73A222KU from KYOCERA AVX meets all mandatory matching criteria while providing enhanced voltage rating (1000V vs. 500V) and increased capacitance (2200 pF vs. 220 pF), suitable for applications requiring higher voltage margins or different capacitance values within the same package footprint.

Parameter Comparison

Engineering Selection Recommendations

Primary Part Selection (CL31B221KGFNNNE): Select the CL31B221KGFNNNE when the application requires exactly 220 pF capacitance at 500V rating. This part maintains Active product status with established supply chain availability (707 Pcs in stock). ROHS3 compliance and MSL 1 rating confirm suitability for standard manufacturing and storage conditions.

Substitute Part Selection (KGM31AR73A222KU): The KGM31AR73A222KU from KYOCERA AVX serves as an alternative when the application circuit design permits 2200 pF capacitance or when higher voltage margin (1000V) is required. This substitute maintains identical temperature coefficient (X7R), operating temperature range (-55°C ~ 125°C), and regulatory compliance (ROHS3, MSL 1). The substitute is available in higher inventory (1063 Pcs) and packaged in Tape & Reel format. Physical dimensions show minimal variation (0.130" L vs. 0.126" L; 0.071" thickness vs. 0.055" thickness), remaining within 1206 package specifications. Verify PCB layout clearance for the increased thickness before final design implementation.

Both parts maintain Active product status, ensuring continued manufacturing support and supply reliability. Selection between primary and substitute depends on specific capacitance and voltage requirements of the target application circuit.

Frequently Asked Questions (FAQ)

Q: Can KGM31AR73A222KU directly replace CL31B221KGFNNNE in any circuit?

A: Direct replacement is not universal. The substitute has 10x higher capacitance (2200 pF vs. 220 pF) and double the voltage rating (1000V vs. 500V). Substitution is valid only if the circuit design permits 2200 pF capacitance at the operating point. Verify circuit schematic and design specifications before substitution.

Q: Are the physical dimensions compatible for PCB assembly?

A: Both parts use the 1206 (3216 Metric) package footprint, ensuring identical pad spacing and placement. However, the substitute is thicker (0.071" vs. 0.055"), requiring verification of vertical clearance on the PCB, particularly near adjacent components or solder mask features.

Q: Do both parts meet the same regulatory and compliance standards?

A: Yes. Both CL31B221KGFNNNE and KGM31AR73A222KU are ROHS3 compliant, REACH unaffected, and carry MSL 1 (Unlimited) moisture sensitivity rating. Both operate across -55°C to 125°C temperature range with X7R temperature coefficient, ensuring equivalent performance stability.

Q: What is the difference in packaging format?

A: The main part (CL31B221KGFNNNE) is supplied in standard packaging format. The substitute (KGM31AR73A222KU) is packaged in Tape & Reel (TR) format, which is standard for high-volume surface mount assembly. Both formats are compatible with automated pick-and-place equipment.

Q: Which part should be selected for new designs?

A: For new designs, select based on the required capacitance value and voltage margin. If 220 pF at 500V is specified, use CL31B221KGFNNNE. If the circuit permits 2200 pF or requires higher voltage margin, KGM31AR73A222KU is acceptable. Both parts are Active status with reliable supply chains.

Q: Are there any thermal or reliability differences between the two manufacturers?

A: Both Samsung Electro-Mechanics and KYOCERA AVX are established manufacturers of ceramic capacitors. Both parts share identical X7R temperature coefficient and operating temperature range (-55°C ~ 125°C), indicating equivalent thermal performance. Selection should be based on application-specific capacitance and voltage requirements rather than manufacturer preference.