Equivalent & Substitute Parts for 2220J1K50331MXT

Part Overview

The Knowles Syfer 2220J1K50331MXT is a 330 pF ceramic capacitor rated for 1500V (1.5kV) with X7R temperature coefficient, housed in a 2220 (5750 Metric) surface mount package. This component is designed for general purpose applications requiring high voltage performance in compact form factors. The part is currently active and available in production quantities. Substitute parts may be required due to inventory availability, specific tolerance requirements, or temperature coefficient specifications for particular circuit applications.

Substiute Parts

2220J1K50331MXT

Knowles SyferIn Stock: 7412220J1K50331MXT Datasheet

Current PartRFQ

C2220C331JFGAC7800

KEMETIn Stock: 2956C2220C331JFGAC7800 Datasheet

MFR RecommendedRFQ

C2220C331KFGAC7800

KEMETIn Stock: 1250C2220C331KFGAC7800 Datasheet

MFR RecommendedRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution for the 2220J1K50331MXT is determined by the following critical parameters that must remain constant:

• Capacitance Value: 330 pF (exact match required)
• Voltage Rating: 1500V (1.5kV) minimum (exact match required)
• Package / Case: 2220 (5750 Metric) (exact match required)
• Mounting Type: Surface Mount, MLCC (exact match required)
• Operating Temperature Range: -55°C to 125°C (exact match required)

Parameters that may vary within acceptable substitution criteria:

• Tolerance: May be tighter (±5% or ±10%) than the original ±20%
• Temperature Coefficient: C0G/NP0 is acceptable as an alternative to X7R, provided circuit requirements permit

The two KEMET substitute parts listed below meet all critical parameters while offering improved tolerance specifications and alternative temperature coefficient characteristics suitable for high voltage ceramic capacitor applications.

Parameter Comparison

Engineering Selection Recommendations

Both KEMET substitute parts are active production components with ROHS3 compliance and unlimited moisture sensitivity rating, matching the regulatory and environmental requirements of the original Knowles Syfer part.

C2220C331JFGAC7800 (KEMET) provides the tightest tolerance specification at ±5%, suitable for applications requiring precise capacitance values. The C0G/NP0 temperature coefficient offers superior temperature stability compared to X7R, with minimal capacitance variation across the operating temperature range.

C2220C331KFGAC7800 (KEMET) offers ±10% tolerance, positioning it between the original ±20% specification and the tighter ±5% alternative. This part also features C0G/NP0 temperature coefficient with the same thermal stability advantages.

Both KEMET parts feature reduced thickness (0.061" versus 0.098"), which may provide design flexibility in space-constrained applications while maintaining identical footprint dimensions and electrical ratings.

Frequently Asked Questions (FAQ)

Q: Can C0G/NP0 temperature coefficient parts replace X7R parts?

A: C0G/NP0 temperature coefficient ceramic capacitors exhibit significantly lower capacitance variation across temperature compared to X7R. Substitution is permissible when circuit design does not require the specific temperature characteristics of X7R dielectric. Verify circuit performance requirements before substitution.

Q: What is the significance of tolerance differences between ±20%, ±10%, and ±5%?

A: Tolerance defines the acceptable range of actual capacitance values from the nominal specification. Tighter tolerances (±5%, ±10%) ensure capacitance values remain closer to the nominal 330 pF specification. Parts with tighter tolerances are suitable for applications where precise capacitance is critical; looser tolerances (±20%) are acceptable for general purpose filtering and coupling applications.

Q: Are the KEMET substitutes mechanically compatible with the original part?

A: Yes. Both KEMET parts use identical 2220 (5750 Metric) package dimensions and surface mount footprint. The reduced thickness of KEMET parts (0.061" versus 0.098") does not affect PCB assembly compatibility and may provide additional design flexibility.

Q: What compliance certifications apply to these parts?

A: All three parts are ROHS3 compliant, REACH unaffected, and classified under ECCN EAR99. Moisture sensitivity level is 1 (Unlimited) for all parts, indicating no special moisture handling requirements during storage or assembly.

Q: Can these parts be used interchangeably in production?

A: Yes, provided circuit design specifications permit the tolerance and temperature coefficient variations. Electrical performance in high voltage applications (1500V rating) is equivalent across all three parts for the specified 330 pF capacitance value and operating temperature range.