1210J2000393MXT Equivalent & Substitute Parts

Part Overview

The 1210J2000393MXT is a 0.039 µF ceramic capacitor manufactured by Knowles Syfer, rated for 200V with X7R temperature coefficient and 1210 (3225 Metric) package form factor. This component is designed for general purpose applications requiring stable capacitance across the operating temperature range of -55°C to 125°C. The part maintains Active product status with full RoHS3 compliance and unlimited moisture sensitivity rating (MSL 1). Substitute parts are identified when equivalent electrical performance can be maintained within the specified parameter tolerances while accommodating design flexibility or inventory availability.

Substiute Parts

1210J2000393MXT

Knowles SyferIn Stock: 7511210J2000393MXT Datasheet

Current PartRFQ

C1210C393KARAC7800

KEMETIn Stock: 5750C1210C393KARAC7800 Datasheet

UpgradeRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution eligibility for the 1210J2000393MXT is determined by the following critical parameters:

Mandatory Matching Parameters:

• Capacitance value: 0.039 µF (exact match required)
• Package / Case: 1210 (3225 Metric) (physical compatibility)
• Temperature Coefficient: X7R (thermal stability requirement)
• Mounting Type: Surface Mount, MLCC (assembly compatibility)
• Operating Temperature Range: -55°C to 125°C (minimum requirement)

Allowable Variation Parameters:

• Voltage Rating: May exceed 200V (higher ratings provide design margin)
• Tolerance: May be tighter than ±20% (improved accuracy acceptable)
• Thickness: Variation acceptable within assembly constraints

The identified substitute C1210C393KARAC7800 satisfies all mandatory matching criteria while providing enhanced voltage rating (250V) and improved tolerance (±10%), making it suitable for direct replacement in applications where the original part is unavailable.

Parameter Comparison

Engineering Selection Recommendations

Both the 1210J2000393MXT and C1210C393KARAC7800 maintain Active product status with full ROHS3 compliance and identical moisture sensitivity ratings. The KEMET substitute provides measurable advantages: 250V voltage rating offers additional design margin over the 200V specification, ±10% tolerance improves capacitance accuracy compared to ±20%, and reduced thickness (0.88mm vs 2.00mm) may provide assembly benefits in space-constrained layouts. Selection between these parts should be based on inventory availability, lead time requirements, and specific application voltage headroom needs. Both components are suitable for general purpose applications within the specified operating temperature range.

Frequently Asked Questions (FAQ)

Q: Can C1210C393KARAC7800 be used as a direct replacement for 1210J2000393MXT?

A: Yes. Both parts share identical capacitance (0.039 µF), temperature coefficient (X7R), package form factor (1210/3225 Metric), and operating temperature range (-55°C to 125°C). The KEMET substitute provides higher voltage rating (250V vs 200V) and tighter tolerance (±10% vs ±20%), making it functionally compatible for direct substitution.

Q: What are the physical compatibility considerations?

A: Both components use identical 1210 (3225 Metric) package dimensions: 0.126" L × 0.098" W (3.20mm × 2.50mm). The KEMET part is thinner (0.88mm vs 2.00mm), which may provide assembly advantages but does not affect electrical compatibility or PCB footprint requirements.

Q: Are there compliance or certification differences?

A: No. Both parts maintain ROHS3 compliance, identical moisture sensitivity level (MSL 1 - Unlimited), and equivalent regulatory status (REACH Unaffected, ECCN EAR99, HTSUS 8532.24.0020).

Q: When should the higher voltage rating of the KEMET part be considered?

A: The 250V rating of C1210C393KARAC7800 provides additional design margin in applications where the original 200V specification may approach circuit operating voltages. This is particularly relevant for circuits with transient voltage conditions or where reliability margin is prioritized.

Q: Does tolerance difference affect circuit performance?

A: The ±10% tolerance of the KEMET substitute is tighter than the ±20% tolerance of the Knowles Syfer part. In applications where capacitance accuracy is critical, the improved tolerance may provide performance benefits. In general purpose applications with wide tolerance acceptance, both parts perform equivalently.