1206J2K00331MXT Equivalent & Substitute Parts

Part Overview

The 1206J2K00331MXT is a 330 pF ceramic capacitor rated for 2000V (2kV) with X7R temperature coefficient, manufactured by Knowles Syfer. This surface mount multilayer ceramic capacitor (MLCC) is designed for general purpose applications requiring high voltage performance in a compact 1206 (3216 Metric) package form factor. The part is currently active in production with 958 units in stock. Substitute parts are identified when equivalent electrical specifications and mechanical compatibility are maintained within the allowed parameter tolerances for this product category.

Substiute Parts

1206J2K00331MXT

Knowles SyferIn Stock: 9731206J2K00331MXT Datasheet

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KGM31AR73D331KU

KYOCERA AVXIn Stock: 12998KGM31AR73D331KU Datasheet

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Key Parameters

Substitute Part Grouping Explanation

Substitution for the 1206J2K00331MXT is determined by strict equivalence in the following parameters:

• Capacitance value: 330 pF (exact match required)
• Voltage rating: 2000V (2kV) minimum (equal or higher acceptable)
• Temperature coefficient: X7R (required for stable performance across operating range)
• Package form factor: 1206 (3216 Metric) (mechanical compatibility requirement)
• Mounting type: Surface Mount, MLCC (assembly process compatibility)
• Operating temperature range: -55°C ~ 125°C (functional requirement)
• Compliance certifications: ROHS3 Compliant, REACH Unaffected (regulatory requirement)

Tolerance variations are permitted within industry standards for ceramic capacitors. Physical dimension variations within the 1206 package specification are acceptable provided they do not exceed standard PCB footprint allowances.

Parameter Comparison

Engineering Selection Recommendations

Both parts meet the core electrical and mechanical requirements for 330 pF, 2000V, X7R ceramic capacitor applications in 1206 package form factor. Both are ROHS3 compliant and REACH unaffected, satisfying regulatory compliance requirements.

The KGM31AR73D331KU substitute offers tighter capacitance tolerance (±10% versus ±20%), which may provide improved circuit performance in applications where capacitance precision is critical. The substitute part dimensions are within acceptable PCB footprint tolerances for 1206 package specifications, with maximum thickness of 0.071" (1.80mm) compared to 0.063" (1.60mm) for the primary part.

Both parts maintain identical voltage rating, temperature coefficient, and operating temperature range. Selection between these parts should be based on tolerance requirements, inventory availability, and PCB layout constraints related to component height.

Frequently Asked Questions (FAQ)

Q: Can KGM31AR73D331KU replace 1206J2K00331MXT in existing designs?

A: Yes. Both parts share identical capacitance (330 pF), voltage rating (2000V), temperature coefficient (X7R), and operating temperature range (-55°C ~ 125°C). The substitute part has slightly larger physical dimensions (0.130" L x 0.063" W versus 0.126" L x 0.063" W, and 0.071" thickness versus 0.063" thickness), which remain within standard 1206 package tolerances. PCB layout verification is recommended to confirm clearance for the increased height.

Q: What is the tolerance difference between these parts?

A: The primary part 1206J2K00331MXT has ±20% capacitance tolerance, while the substitute KGM31AR73D331KU has ±10% tolerance. The tighter tolerance of the substitute part may provide improved circuit stability in applications sensitive to capacitance variation.

Q: Are both parts compliant with environmental regulations?

A: Yes. Both parts are ROHS3 compliant and REACH unaffected, meeting current environmental and hazardous substance restrictions.

Q: What is the moisture sensitivity level for these capacitors?

A: Both parts have Moisture Sensitivity Level (MSL) 1, indicating unlimited shelf life without moisture control requirements.

Q: Are there any assembly process differences between these parts?

A: No. Both parts are surface mount MLCCs in 1206 package form factor with identical mounting type specifications. Standard reflow soldering processes apply to both parts.