T322D156K020AS Equivalent & Substitute Parts

Part Overview

The T322D156K020AS is a 15 µF molded tantalum capacitor manufactured by KEMET, rated for 20 V operation with ±10% tolerance. This axial through-hole component operates across the temperature range of -55°C to 125°C and features an equivalent series resistance (ESR) of 2.3 Ohm. The part is classified as Active product status and serves general-purpose applications in electronic circuits requiring stable capacitance performance.

Substitute parts are identified when design requirements permit component interchange due to matching or superior electrical and mechanical specifications. Alternative sources and upgraded voltage ratings provide flexibility for inventory management and supply chain optimization.

Substiute Parts

T322D156K020AS

KEMETIn Stock: 868T322D156K020AS Datasheet

Current PartRFQ

T322D156K020AT

KEMETIn Stock: 724T322D156K020AT Datasheet

DirectRFQ

T322D156K025AS

KEMETIn Stock: 842T322D156K025AS Datasheet

UpgradeRFQ

173D156X9020XE3

Vishay SpragueIn Stock: 1301173D156X9020XE3 Datasheet

SimilarRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitute parts for the T322D156K020AS are classified into three categories based on electrical and mechanical compatibility:

Direct Equivalent (Same Specifications): Parts matching all critical parameters—capacitance, voltage rating, tolerance, physical dimensions, and operating temperature range—are classified as direct equivalents. These parts maintain identical electrical performance and physical fit.

Upgrade (Higher Voltage Rating): Parts with identical capacitance, tolerance, and physical dimensions but rated for higher voltage operation are classified as upgrades. Higher voltage ratings provide additional design margin and are electrically compatible in circuits designed for the original voltage specification.

Cross-Manufacturer Equivalent (Different Manufacturer): Parts from alternative manufacturers with matching capacitance, voltage rating, tolerance, physical dimensions, and operating temperature range are classified as cross-manufacturer equivalents. These parts provide supply chain alternatives while maintaining electrical and mechanical compatibility.

Substitution Criteria (All Must Match):

• Capacitance: 15 µF
• Voltage Rating: 20 V or higher
• Tolerance: ±10%
• Type: Molded Tantalum
• Mounting: Through Hole Axial
• Package Dimensions: 0.180" Dia x 0.420" L (4.57mm x 10.67mm)
• Operating Temperature: -55°C to 125°C minimum

Parameter Comparison

Engineering Selection Recommendations

T322D156K020AT (Direct Equivalent): This KEMET part provides direct electrical and mechanical substitution for the T322D156K020AS. Both components share identical capacitance, voltage rating, tolerance, physical dimensions, and operating temperature specifications. The T322D156K020AT achieves ROHS3 compliance, whereas the main part is RoHS non-compliant. Selection of this part is appropriate when RoHS compliance is a design requirement. Inventory availability is 677 pieces.

T322D156K025AS (Upgrade): This KEMET part maintains identical capacitance, tolerance, physical dimensions, and operating temperature range while providing a higher 25 V voltage rating. The ESR is reduced to 2.0 Ohm compared to 2.3 Ohm in the main part. This part is suitable for applications where increased voltage margin is beneficial. The part remains RoHS non-compliant. Inventory availability is 819 pieces.

173D156X9020XE3 (Cross-Manufacturer Equivalent): This Vishay Sprague TANTALEX™ 173D series part provides electrical and mechanical compatibility with matching capacitance, voltage rating, tolerance, physical dimensions, and operating temperature range. The part achieves ROHS3 compliance. ESR specification is not provided for this part. This option is appropriate for supply chain diversification and when RoHS compliance is required. Inventory availability is 1229 pieces.

Selection criteria should prioritize product status (all parts are Active), compliance requirements (RoHS3 compliance available in T322D156K020AT and 173D156X9020XE3), and inventory availability. Voltage upgrade to T322D156K025AS is appropriate when circuit design permits higher voltage operation.

Frequently Asked Questions (FAQ)

Q: Can T322D156K020AT replace T322D156K020AS directly?

A: Yes. Both parts share identical electrical specifications (15 µF, ±10%, 20 V) and physical dimensions (0.180" Dia x 0.420" L). The primary difference is RoHS compliance status. T322D156K020AT is ROHS3 compliant while T322D156K020AS is not. Direct substitution is electrically and mechanically valid.

Q: What is the difference between T322D156K025AS and T322D156K020AS?

A: Both parts have identical capacitance (15 µF), tolerance (±10%), physical dimensions, and operating temperature range. T322D156K025AS is rated for 25 V operation compared to 20 V for T322D156K020AS. The ESR is 2.0 Ohm versus 2.3 Ohm. T322D156K025AS can be used in circuits designed for 20 V operation, providing additional voltage margin.

Q: Is the Vishay Sprague 173D156X9020XE3 compatible with the KEMET T322D156K020AS?

A: Yes. The 173D156X9020XE3 matches the critical electrical parameters (15 µF, ±10%, 20 V) and physical dimensions (0.180" Dia x 0.420" L). Both are molded tantalum axial through-hole components with identical operating temperature range (-55°C to 125°C). Cross-manufacturer substitution is valid for these specifications.

Q: What packaging differences exist among the substitute parts?

A: T322D156K020AS, T322D156K020AT, and T322D156K025AS are supplied in Bulk packaging. The 173D156X9020XE3 is supplied in Cut Tape (CT) packaging. Packaging format affects handling and assembly processes but does not impact electrical or mechanical compatibility.

Q: Which substitute part offers the best RoHS compliance?

A: Both T322D156K020AT and 173D156X9020XE3 achieve ROHS3 compliance. T322D156K020AS and T322D156K025AS are RoHS non-compliant. Selection between the two compliant options depends on manufacturer preference and supply chain requirements.

Q: Does ESR specification affect substitution validity?

A: ESR is a performance characteristic that influences circuit behavior but does not prevent substitution when other electrical parameters match. T322D156K025AS has lower ESR (2.0 Ohm) compared to T322D156K020AS (2.3 Ohm), which may improve performance in certain applications. The 173D156X9020XE3 does not specify ESR, but this does not invalidate its use as a substitute when other parameters are equivalent.

Q: Can these parts be used interchangeably in existing designs?

A: Yes, provided the circuit design accommodates the electrical specifications. All substitute parts maintain the same capacitance (15 µF), tolerance (±10%), physical dimensions, and operating temperature range. Designs using 20 V rated components can accept the 25 V upgrade (T322D156K025AS). RoHS compliance requirements should be verified against design specifications.