0805J1K00331MXT Equivalent & Substitute Parts

Part Overview

The 0805J1K00331MXT is a 330 pF ceramic capacitor rated for 1000V (1kV) with X7R temperature coefficient, manufactured by Knowles Syfer in 0805 (2012 Metric) surface mount package. This component is designed for general purpose applications requiring high voltage performance in compact form factor. The part is currently active in production with full RoHS3 compliance and unlimited moisture sensitivity rating (MSL 1). Substitute parts are identified when equivalent electrical specifications and mechanical compatibility are maintained across manufacturers.

Substiute Parts

0805J1K00331MXT

Knowles SyferIn Stock: 8460805J1K00331MXT Datasheet

Current PartRFQ

C0805C331KDRAC7800

KEMETIn Stock: 7201C0805C331KDRAC7800 Datasheet

UpgradeRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution eligibility for the 0805J1K00331MXT is determined by the following critical parameters:

• Capacitance Value: Must be 330 pF
• Voltage Rating: Must be 1000V (1kV) or higher
• Temperature Coefficient: Must be X7R
• Package: Must be 0805 (2012 Metric) surface mount
• Operating Temperature: Must support -55°C to 125°C range
• Compliance: Must maintain ROHS3 and REACH Unaffected status

The substitute part C0805C331KDRAC7800 from KEMET meets all these criteria. Tolerance variation (±20% vs ±10%) does not disqualify substitution when the tighter tolerance of the substitute part is acceptable for the application circuit design.

Parameter Comparison

Engineering Selection Recommendations

Both the 0805J1K00331MXT and C0805C331KDRAC7800 are active production components with identical compliance certifications (ROHS3 Compliant, REACH Unaffected). The KEMET substitute offers improved capacitance tolerance (±10% vs ±20%), which provides tighter performance specifications for precision circuit applications. Physical dimensions are equivalent with a maximum thickness difference of 0.004" (0.10mm), which remains within standard PCB assembly tolerances for 0805 surface mount placement. Both components maintain unlimited moisture sensitivity rating and identical operating temperature range, ensuring direct functional equivalence in high voltage ceramic capacitor applications.

Frequently Asked Questions (FAQ)

Q: Can C0805C331KDRAC7800 be used as a direct replacement for 0805J1K00331MXT?

A: Yes. Both parts share identical capacitance (330 pF), voltage rating (1000V), temperature coefficient (X7R), package (0805), and operating temperature range (-55°C to 125°C). The substitute part features tighter tolerance (±10% vs ±20%), which is compatible with circuit designs specified for the original part.

Q: What is the significance of the tolerance difference between these parts?

A: The KEMET substitute provides ±10% tolerance compared to the Knowles Syfer ±20% tolerance. This tighter tolerance specification does not prevent substitution; it indicates improved capacitance accuracy. Circuit designs accepting ±20% tolerance will function correctly with the ±10% substitute.

Q: Are there physical compatibility concerns with the 0.004" thickness difference?

A: No. The maximum thickness difference of 0.004" (0.10mm) between the two parts falls within standard PCB assembly tolerances for 0805 surface mount components. Both parts maintain identical length and width dimensions (0.079" x 0.049" / 2.00mm x 1.25mm).

Q: Do both parts meet the same regulatory and compliance standards?

A: Yes. Both the 0805J1K00331MXT and C0805C331KDRAC7800 are ROHS3 Compliant and REACH Unaffected, with identical moisture sensitivity level (MSL 1 - Unlimited). They meet equivalent environmental and regulatory requirements.

Q: What applications are these capacitors suitable for?

A: Both parts are specified for general purpose applications. The 1000V rating and X7R temperature coefficient make them suitable for high voltage circuits requiring stable capacitance across the -55°C to 125°C operating range.