T322B475K010AS Equivalent & Substitute Parts

Part Overview

The T322B475K010AS is a 4.7 µF molded tantalum capacitor manufactured by KEMET, rated for 10 V operation with ±10% tolerance. This axial through-hole component is designed for general-purpose applications requiring compact form factor and reliable performance across the -55°C to 125°C operating temperature range. The part is currently active in production with 953 pieces available in inventory.

Substitute parts are necessary when design requirements change, such as increased voltage margin requirements, improved RoHS compliance status, or when primary inventory becomes unavailable. Alternative models within the T322 series maintain identical capacitance and tolerance specifications while offering different voltage ratings and ESR characteristics.

Substiute Parts

T322B475K010AS

KEMETIn Stock: 1000T322B475K010AS Datasheet

Current PartRFQ

T322B475K010AT

KEMETIn Stock: 2292T322B475K010AT Datasheet

DirectRFQ

T322B475K015AS

KEMETIn Stock: 1406T322B475K015AS Datasheet

UpgradeRFQ

T322B475K020AS

KEMETIn Stock: 1037T322B475K020AS Datasheet

UpgradeRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution within the T322 series is determined by three critical parameters: capacitance value, tolerance specification, and physical package dimensions. All substitute parts maintain the 4.7 µF capacitance and ±10% tolerance of the main part, ensuring functional equivalence in circuits designed for these specifications.

Voltage rating and ESR are secondary parameters that vary among substitutes. Higher voltage-rated parts (15 V and 20 V) operate within the same physical envelope and can replace the 10 V rated part in applications where circuit voltage remains at or below 10 V, providing additional safety margin. ESR values decrease with higher voltage ratings due to internal design optimization.

RoHS compliance status differs between the main part and one direct substitute, reflecting manufacturing process variations. All parts share identical operating temperature range, mounting type, and axial package configuration.

Parameter Comparison

Engineering Selection Recommendations

T322B475K010AT (Direct Substitute): This part is electrically and mechanically identical to the main part T322B475K010AS, with matching 10 V rating and 8 Ohm ESR. The primary distinction is ROHS3 compliance status. Selection of T322B475K010AT is appropriate when RoHS3 compliance is a design requirement or when higher inventory availability (2190 pieces) is advantageous for production scheduling.

T322B475K015AS (Voltage Upgrade): This 15 V rated variant maintains the same 4.7 µF capacitance and ±10% tolerance while reducing ESR to 5 Ohm. Selection is appropriate for applications where circuit voltage remains at 10 V or below but where improved ESR performance or additional voltage safety margin is beneficial. RoHS compliance status remains non-compliant, matching the main part.

T322B475K020AS (Voltage Upgrade): This 20 V rated variant provides the lowest ESR at 4.5 Ohm among all substitutes. Selection is appropriate for applications requiring maximum ESR reduction or highest voltage margin while maintaining 4.7 µF capacitance. RoHS compliance status remains non-compliant.

All substitute parts maintain active product status and are available in production quantities. Selection between upgrade options depends on circuit voltage requirements and ESR performance specifications rather than availability or compliance considerations.

Frequently Asked Questions (FAQ)

Q: Can T322B475K010AT replace T322B475K010AS in any application?

A: Yes. T322B475K010AT is a direct electrical and mechanical equivalent with identical capacitance (4.7 µF), tolerance (±10%), voltage rating (10 V), ESR (8 Ohm), and physical dimensions (0.110" Dia x 0.290" L). The only difference is RoHS3 compliance status. Substitution is valid for all applications designed for the main part.

Q: Can higher voltage-rated parts (15 V or 20 V) replace the 10 V rated main part?

A: Yes, provided the circuit voltage does not exceed 10 V. The T322B475K015AS and T322B475K020AS maintain identical capacitance, tolerance, and physical package dimensions. Higher voltage ratings provide additional safety margin and lower ESR values. Substitution is valid when circuit design voltage remains at or below the main part's 10 V rating.

Q: What is the significance of ESR differences between substitute parts?

A: ESR (Equivalent Series Resistance) affects ripple current handling and heat dissipation. The main part and T322B475K010AT both have 8 Ohm ESR. The T322B475K015AS reduces ESR to 5 Ohm, and T322B475K020AS further reduces it to 4.5 Ohm. Lower ESR is beneficial in high-frequency or high-ripple-current applications. Selection depends on circuit performance requirements rather than substitution compatibility.

Q: Are all substitute parts available in the same axial through-hole package?

A: Yes. All parts—T322B475K010AS, T322B475K010AT, T322B475K015AS, and T322B475K020AS—share identical physical dimensions of 0.110" Dia x 0.290" L (2.79mm x 7.37mm) and axial through-hole mounting configuration. Direct board-level substitution is possible without layout modifications.

Q: Does RoHS compliance affect electrical performance?

A: No. RoHS compliance status reflects manufacturing process and material composition but does not alter electrical specifications. T322B475K010AT is ROHS3 compliant while T322B475K010AS is non-compliant, but both deliver identical electrical performance. Selection based on compliance requirements is a design or regulatory consideration, not a performance consideration.

Q: What is the operating temperature range for all substitute parts?

A: All substitute parts operate across the identical temperature range of -55°C to 125°C. Temperature performance is consistent across the T322 series and does not differentiate between substitutes.