2220Y1K50331MXT Equivalent & Substitute Parts

Part Overview

The 2220Y1K50331MXT is an active production ceramic capacitor manufactured by Knowles Syfer, featuring 330 pF capacitance with 1500V rated voltage and X7R temperature coefficient. This Surface Mount MLCC (Multilayer Ceramic Capacitor) is designed for high-voltage applications requiring stable performance across the -55°C to 125°C operating range. The part is ROHS3 compliant with unlimited moisture sensitivity rating, making it suitable for boardflex-sensitive applications. Equivalent and substitute parts are identified to provide design flexibility, inventory alternatives, or performance upgrades when the primary part becomes unavailable or when application requirements necessitate different electrical characteristics.

Substiute Parts

2220Y1K50331MXT

Knowles SyferIn Stock: 11612220Y1K50331MXT Datasheet

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2220Y4K00331KXT

Knowles SyferIn Stock: 8862220Y4K00331KXT Datasheet

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Key Parameters

Substitute Part Grouping Explanation

Substitution eligibility for the 2220Y1K50331MXT is determined by the following critical parameters:

Fixed Parameters (Must Match):

• Capacitance: 330 pF
• Package / Case: 2220 (5750 Metric)
• Mounting Type: Surface Mount, MLCC
• Temperature Coefficient: X7R
• Operating Temperature Range: -55°C to 125°C
• Series: FlexiCap™
• Features: Soft Termination

Variable Parameters (Allowed to Differ):

• Voltage - Rated: May be equal or higher
• Tolerance: May be tighter (lower percentage)
• Thickness: May vary within mechanical constraints
• Manufacturer specifications within compliance standards

The substitute part 2220Y4K00331KXT maintains identical capacitance, package, mounting type, temperature coefficient, and operating range. It provides an upgrade path with higher voltage rating (4000V vs 1500V) and improved tolerance (±10% vs ±20%), while maintaining the same 2220 package footprint and soft termination feature.

Parameter Comparison

Engineering Selection Recommendations

Both the 2220Y1K50331MXT and 2220Y4K00331KXT are active production parts with ROHS3 compliance and REACH unaffected status, ensuring regulatory compliance for current manufacturing standards. The primary distinction between these parts is voltage rating and tolerance specification.

The 2220Y1K50331MXT is appropriate for applications with 1500V maximum operating voltage requirements. The 2220Y4K00331KXT provides higher voltage capability at 4000V with tighter tolerance (±10%), making it suitable for applications requiring enhanced voltage margin or stricter capacitance tolerance. The reduced thickness of the 4kV variant (2.50mm vs 4.20mm) may provide design advantages in space-constrained layouts while maintaining identical footprint dimensions.

Both parts share identical capacitance, package, mounting type, temperature coefficient, and operating temperature range, confirming direct substitution compatibility at the board level. Selection between these parts depends on circuit voltage requirements and tolerance specifications rather than mechanical or thermal constraints.

Frequently Asked Questions (FAQ)

Q: Can the 2220Y4K00331KXT replace the 2220Y1K50331MXT in existing designs?

A: Yes, the 2220Y4K00331KXT is a direct substitute provided the circuit voltage rating does not exceed 4000V. The identical 2220 package footprint, capacitance value, and mounting type ensure PCB compatibility. The higher voltage rating and improved tolerance of the substitute part do not create compatibility issues in applications designed for 1500V operation.

Q: What are the key differences between these two parts?

A: The primary differences are voltage rating (1500V vs 4000V), tolerance (±20% vs ±10%), and thickness (4.20mm vs 2.50mm). Capacitance, package, temperature coefficient, and operating range remain identical.

Q: Are both parts suitable for boardflex-sensitive applications?

A: Yes, both parts feature soft termination and are designated for boardflex-sensitive applications, maintaining compatibility with flexible PCB designs.

Q: Do these parts have different moisture sensitivity requirements?

A: No, both parts have MSL 1 (Unlimited) rating, indicating no moisture sensitivity restrictions for storage or handling.

Q: Can the thinner 2220Y4K00331KXT be used in designs originally specified for the thicker 2220Y1K50331MXT?

A: Yes, the reduced thickness (2.50mm vs 4.20mm) of the 4kV variant does not create compatibility issues. The identical length and width dimensions ensure PCB footprint compatibility, and the thinner profile may provide design advantages in space-constrained applications.