KEMET T322A335K006AS Equivalent & Substitute Parts

Part Overview

The KEMET T322A335K006AS is a 3.3 µF molded tantalum capacitor rated for 6 V operation in axial through-hole configuration. This component is classified as Active product status and is suitable for general-purpose applications requiring compact, reliable energy storage in legacy and modern circuit designs. Substitute parts are identified when circuit requirements permit voltage rating upgrades or when inventory constraints necessitate alternative sourcing within the same product family.

Substiute Parts

T322A335K006AS

KEMETIn Stock: 866T322A335K006AS Datasheet

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T322B335K020AS

KEMETIn Stock: 903T322B335K020AS Datasheet

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Key Parameters

Substitute Part Grouping Explanation

Substitution logic for the T322A335K006AS is based on the following criteria:

Mandatory Matching Parameters:

• Capacitance: 3.3 µF (exact match required)
• Tolerance: ±10% (equivalent or tighter tolerance acceptable)
• Type: Molded Tantalum (same technology class)
• Mounting Type: Through Hole (same assembly method)
• Package / Case: Axial (same physical form factor)
• Operating Temperature: -55°C ~ 125°C (same or wider range acceptable)

Allowable Variation Parameters:

• Voltage - Rated: Substitutes must equal or exceed 6 V (higher voltage ratings are acceptable in applications where circuit design permits)
• ESR: Lower values represent improved electrical performance and are acceptable substitutes

The T322B335K020AS qualifies as a substitute because it maintains all mandatory parameters while providing a higher voltage rating (20 V) and improved ESR performance (5.5 Ohm versus 13 Ohm).

Parameter Comparison

Engineering Selection Recommendations

Primary Part Selection (T322A335K006AS): Select this part when circuit design specifies a 6 V rated capacitor and PCB layout accommodates the 0.095" diameter axial form factor. This part is appropriate for applications with voltage constraints at or near 6 V operation.

Substitute Part Selection (T322B335K020AS): The T322B335K020AS is a valid substitute when:

• Circuit operating voltage does not exceed 20 V
• PCB layout can accommodate the slightly larger 0.110" diameter form factor (0.015" increase in diameter, 0.030" increase in length)
• Improved ESR performance (5.5 Ohm versus 13 Ohm) provides circuit performance benefits
• Both parts maintain identical Active product status and compliance certifications

Both parts are RoHS non-compliant and REACH Unaffected, with identical regulatory classifications. Selection between these parts depends on circuit voltage requirements and available PCB space rather than compliance or reliability considerations.

Frequently Asked Questions (FAQ)

Q: Can T322B335K020AS replace T322A335K006AS in any application?

A: The T322B335K020AS is a valid substitute only when the circuit operating voltage does not exceed 20 V. The higher voltage rating does not create compatibility issues in lower-voltage applications. However, the slightly larger physical dimensions (0.110" diameter versus 0.095" diameter) must be verified against PCB layout constraints before substitution.

Q: What is the significance of the lower ESR in the substitute part?

A: ESR (Equivalent Series Resistance) of 5.5 Ohm in the T322B335K020AS compared to 13 Ohm in the T322A335K006AS indicates improved electrical performance. Lower ESR reduces heat generation and improves high-frequency response characteristics. This represents a performance enhancement rather than a limitation.

Q: Are there any compliance or regulatory differences between these parts?

A: Both parts share identical compliance status: RoHS non-compliant and REACH Unaffected. No regulatory advantage exists between the two parts. Selection is based solely on electrical requirements and physical form factor compatibility.

Q: What physical space considerations apply to substitution?

A: The T322B335K020AS is slightly larger: 0.110" diameter (versus 0.095") and 0.290" length (versus 0.260"). PCB layout must accommodate these dimensional increases. Verify lead hole spacing and component clearances before substitution.

Q: Is the ±10% tolerance maintained in the substitute part?

A: Yes. Both parts maintain ±10% capacitance tolerance, ensuring equivalent circuit performance in applications where this tolerance specification is required.

Q: Can the T322A335K006AS be used in place of T322B335K020AS?

A: No. The T322A335K006AS is rated for 6 V maximum operation. Using it in a circuit designed for the 20 V rated T322B335K020AS would result in overvoltage stress and potential component failure. Substitution is unidirectional: higher-rated parts can replace lower-rated parts only when circuit voltage permits.