1210J1K50331MXT Equivalent & Substitute Parts

Part Overview

The 1210J1K50331MXT is a 330 pF ceramic capacitor manufactured by Knowles Syfer, rated for 1500V (1.5kV) operation with X7R temperature coefficient characteristics. This component is designed for general-purpose applications requiring high-voltage ceramic capacitance in a compact surface-mount package. The part maintains Active product status with full RoHS3 compliance and unlimited moisture sensitivity rating (MSL 1). Substitute parts are identified when equivalent capacitance, voltage rating, package dimensions, and compliance certifications align with application requirements.

Substiute Parts

1210J1K50331MXT

Knowles SyferIn Stock: 7491210J1K50331MXT Datasheet

Current PartRFQ

C1210C331JGGAC7800

KEMETIn Stock: 8046C1210C331JGGAC7800 Datasheet

MFR RecommendedRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution eligibility for the 1210J1K50331MXT is determined by the following critical parameters:

• Capacitance Value: Must be 330 pF to maintain circuit function
• Package Dimensions: Must be 1210 (3225 Metric) for PCB layout compatibility
• Mounting Type: Must be Surface Mount, MLCC
• Voltage Rating: Must meet or exceed 1500V minimum requirement
• Temperature Coefficient: X7R or equivalent stable performance across operating range
• Compliance: RoHS3 and REACH compliance required for regulatory alignment
• MSL Rating: Must support unlimited moisture sensitivity (MSL 1)

The identified substitute C1210C331JGGAC7800 satisfies all substitution criteria. While this part features a higher voltage rating (2000V) and tighter tolerance (±5% versus ±20%), these characteristics represent performance enhancements rather than incompatibilities. The identical package footprint, capacitance value, operating temperature range, and compliance certifications ensure direct functional equivalence.

Parameter Comparison

Engineering Selection Recommendations

Both the 1210J1K50331MXT and C1210C331JGGAC7800 maintain Active product status with full regulatory compliance. Selection between these parts should be based on application-specific requirements:

The 1210J1K50331MXT provides the specified voltage rating of 1500V with X7R temperature stability and ±20% tolerance. This part is suitable for applications where the exact voltage specification and tolerance band are design requirements.

The C1210C331JGGAC7800 offers enhanced performance characteristics including 2000V voltage rating, C0G/NP0 temperature coefficient, and ±5% tolerance. This substitute is applicable when higher voltage margin, superior temperature stability, or tighter capacitance tolerance provides system benefits. The marginal thickness increase (0.091" versus 0.079") remains within typical PCB assembly clearance specifications.

Both parts carry identical RoHS3 and REACH compliance certifications, ensuring regulatory alignment across supply chains.

Frequently Asked Questions (FAQ)

Q: Can C1210C331JGGAC7800 directly replace 1210J1K50331MXT on existing PCBs?

A: Yes. Both parts share identical footprint dimensions (0.126" L x 0.098" W, 3.20mm x 2.50mm) and mounting type (Surface Mount, MLCC). The thickness difference (0.091" versus 0.079") does not affect PCB assembly compatibility under standard manufacturing tolerances.

Q: What is the significance of the temperature coefficient difference (X7R versus C0G/NP0)?

A: X7R provides ±15% capacitance variation across the -55°C to 125°C operating range. C0G/NP0 provides superior stability with minimal variation across temperature. For applications requiring stable capacitance across temperature extremes, C0G/NP0 offers enhanced performance.

Q: Does the ±5% tolerance of C1210C331JGGAC7800 provide advantages over the ±20% tolerance of 1210J1K50331MXT?

A: Tighter tolerance reduces capacitance variation in production batches, improving circuit consistency. Applications requiring precise capacitance values benefit from ±5% tolerance. General-purpose applications typically function within ±20% tolerance specifications.

Q: Is the higher voltage rating (2000V) of C1210C331JGGAC7800 a concern for 1500V applications?

A: No. Higher voltage rating provides additional safety margin and does not degrade performance in lower-voltage applications. The substitute operates safely at 1500V with enhanced reliability margin.

Q: Are both parts available with identical compliance certifications?

A: Yes. Both 1210J1K50331MXT and C1210C331JGGAC7800 carry ROHS3 compliance and REACH Unaffected status, ensuring regulatory alignment for global supply chains.

Q: What packaging format is available for both parts?

A: Both parts are supplied in Tape & Reel (TR) format, standard for automated PCB assembly processes.