22205C684MAT1A Ceramic Capacitor - Equivalent & Substitute Parts

Part Overview

The 22205C684MAT1A is a 0.68 µF ceramic capacitor manufactured by KYOCERA AVX, rated for 50V with X7R temperature coefficient and 2220 (5750 Metric) package form factor. This surface mount multilayer ceramic capacitor (MLCC) is designed for general purpose applications requiring stable capacitance across the operating temperature range of -55°C to 125°C. The part is currently active in production and RoHS3 compliant with MSL 1 rating.

Substitute parts are identified when equivalent electrical performance can be achieved within the allowed parameter tolerances for this product category, particularly when higher voltage ratings or improved tolerance specifications are available from alternative manufacturers.

Substiute Parts

22205C684MAT1A

KYOCERA AVXIn Stock: 98922205C684MAT1A Datasheet

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C2220C684KARAC7800

KEMETIn Stock: 1573C2220C684KARAC7800 Datasheet

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C5750X7R2A684K160KA

TDK CorporationIn Stock: 1555C5750X7R2A684K160KA Datasheet

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C5750X7R2A684K160KM

TDK CorporationIn Stock: 2474C5750X7R2A684K160KM Datasheet

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C5750X7R2A684M160KA

TDK CorporationIn Stock: 2845C5750X7R2A684M160KA Datasheet

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GRM55DR72E684KW01L

Murata ElectronicsIn Stock: 1551GRM55DR72E684KW01L Datasheet

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Key Parameters

Substitute Part Grouping Explanation

Substitution eligibility for the 22205C684MAT1A is determined by the following criteria:

Mandatory Matching Parameters:

• Capacitance: 0.68 µF (exact match required)
• Package / Case: 2220 (5750 Metric) (exact match required)
• Temperature Coefficient: X7R (exact match required)
• Operating Temperature: -55°C to 125°C (exact match required)
• Mounting Type: Surface Mount, MLCC (exact match required)
• RoHS Status: ROHS3 Compliant (exact match required)

Allowable Variation Parameters:

• Voltage Rating: Equal to or greater than 50V (uprating permitted)
• Tolerance: ±10% or ±20% (tighter tolerance acceptable)
• Thickness: Variation permitted within mechanical constraints
• MSL Rating: 1 (Unlimited) maintained across all substitutes

Four substitute parts meet these criteria, representing alternatives from KEMET, TDK Corporation, and Murata Electronics with voltage ratings ranging from 100V to 250V and tolerance specifications of ±10% or ±20%.

Parameter Comparison

Engineering Selection Recommendations

For New Designs: The KEMET C2220C684KARAC7800 and Murata Electronics GRM55DR72E684KW01L are recommended as primary substitutes. Both parts carry Active product status, ensuring long-term availability and supply chain stability. The KEMET part offers the thinnest profile (0.057") with 250V rating and ±10% tolerance. The Murata part provides 250V rating with ±10% tolerance and Active status. Both are ROHS3 compliant with MSL 1 rating.

For Existing Designs: The TDK Corporation parts (C5750X7R2A684K160KA, C5750X7R2A684K160KM, C5750X7R2A684M160KA) are electrically compatible but carry "Not For New Designs" status. These parts may be used for legacy system maintenance or repair applications where supply continuity is required. The C5750X7R2A684M160KA matches the original ±20% tolerance specification.

Voltage Derating Consideration: All substitute parts exceed the original 50V rating (100V or 250V), providing additional safety margin in applications where voltage stress is a design concern.

Frequently Asked Questions (FAQ)

Q: Can I use a 100V or 250V rated capacitor in place of the 50V original part? A: Yes. Higher voltage ratings are acceptable substitutes for lower voltage applications. The 100V and 250V rated alternatives provide additional voltage margin and are electrically compatible when all other parameters (capacitance, tolerance, temperature coefficient, package) match exactly.

Q: What is the difference between the TDK parts with ±10% and ±20% tolerance? A: The C5750X7R2A684K160KA and C5750X7R2A684K160KM both specify ±10% tolerance, while C5750X7R2A684M160KA specifies ±20% tolerance. The original 22205C684MAT1A uses ±20% tolerance. For applications requiring tighter tolerance control, the ±10% alternatives provide improved capacitance accuracy.

Q: Why are some TDK parts marked "Not For New Designs"? A: This designation indicates the manufacturer is phasing out these parts. While they remain available for existing applications and repairs, new product designs should specify the KEMET or Murata alternatives to ensure long-term supply availability.

Q: Are all substitute parts available in the same packaging format? A: Yes. All substitute parts use 2220 (5750 Metric) package form factor and Tape & Reel (TR) packaging. Physical dimensions are compatible with the original part's PCB footprint, though thickness varies slightly (0.057" to 0.090"). Verify clearance in your specific assembly if height is constrained.

Q: Do all parts meet the same compliance standards? A: Yes. All listed parts are ROHS3 compliant, REACH unaffected, and carry MSL 1 (Unlimited) moisture sensitivity rating. ECCN classification is EAR99 for all parts, and HTSUS code 8532.24.0020 applies uniformly.