T322B685K015AS Equivalent & Substitute Parts

Part Overview

The T322B685K015AS is a 6.8 µF molded tantalum capacitor manufactured by KEMET, rated for 15 V operation in an axial through-hole package. This component is classified as Active product status and is designed for general-purpose applications requiring stable capacitance and low equivalent series resistance in compact form factors.

Substitute parts are identified when equivalent electrical specifications and mechanical compatibility are maintained across the same capacitance value, voltage rating, tolerance, and package configuration. Alternative sources and packaging formats may be required due to inventory availability, compliance requirements, or manufacturing discontinuation.

Substiute Parts

T322B685K015AS

KEMETIn Stock: 1090T322B685K015AS Datasheet

Current PartRFQ

T322B685K015AT

KEMETIn Stock: 1118T322B685K015AT Datasheet

DirectRFQ

173D685X9015VWE3

Vishay SpragueIn Stock: 4748173D685X9015VWE3 Datasheet

SimilarRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution eligibility for the T322B685K015AS is determined by strict equivalence across the following electrical and mechanical parameters:

Primary Substitution Criteria:

• Capacitance: 6.8 µF (exact match required)
• Voltage Rating: 15 V (exact match required)
• Tolerance: ±10% (exact match required)
• Package Type: Axial (exact match required)
• Mounting: Through Hole (exact match required)
• Physical Dimensions: 0.110" Dia x 0.290" L (exact match required)
• Operating Temperature Range: -55°C ~ 125°C (exact match required)

Secondary Considerations:

• ESR specification (4 Ohm for main part; not specified for Vishay substitute)
• Manufacturer compliance certifications (RoHS, REACH, ECCN)
• Packaging format (Bulk versus Cut Tape)
• Inventory availability

Parts meeting all primary criteria are classified as direct substitutes. Variations in secondary parameters do not disqualify substitution eligibility when primary electrical and mechanical specifications are identical.

Parameter Comparison

Engineering Selection Recommendations

T322B685K015AT (KEMET Direct Substitute)

The T322B685K015AT is a direct electrical and mechanical equivalent to the T322B685K015AS. Both components are manufactured by KEMET within the T322 series and maintain identical capacitance, voltage rating, tolerance, package dimensions, and operating temperature specifications. The primary distinction is RoHS compliance status: T322B685K015AT is ROHS3 compliant, while T322B685K015AS is RoHS non-compliant. Selection of T322B685K015AT is appropriate for applications requiring RoHS3 compliance certification. Both parts are supplied in Bulk packaging format with comparable inventory levels.

173D685X9015VWE3 (Vishay Sprague Alternative)

The 173D685X9015VWE3 manufactured by Vishay Sprague (TANTALEX™ 173D series) meets all primary electrical and mechanical substitution criteria: 6.8 µF capacitance, 15 V rating, ±10% tolerance, axial through-hole package, and identical physical dimensions. This component is ROHS3 compliant and REACH unaffected. The ESR specification is not provided for this part. The 173D685X9015VWE3 is supplied in Cut Tape (CT) packaging format with higher inventory availability (4686 units). Selection of this part is appropriate when cross-manufacturer sourcing is required or when Cut Tape packaging format is preferred for automated assembly processes.

Frequently Asked Questions (FAQ)

Q: Can T322B685K015AT be used as a direct replacement for T322B685K015AS?

A: Yes. Both components are manufactured by KEMET and share identical electrical specifications (6.8 µF, 15 V, ±10% tolerance), equivalent series resistance (4 Ohm), and mechanical package configuration (0.110" Dia x 0.290" L axial through-hole). The primary difference is RoHS compliance status. T322B685K015AT is ROHS3 compliant, while T322B685K015AS is RoHS non-compliant.

Q: Is the Vishay Sprague 173D685X9015VWE3 electrically equivalent to the KEMET T322B685K015AS?

A: Yes. The 173D685X9015VWE3 meets all primary electrical and mechanical substitution criteria: 6.8 µF capacitance, 15 V voltage rating, ±10% tolerance, molded tantalum type, and identical axial package dimensions (0.110" Dia x 0.290" L). Both components operate across the same temperature range (-55°C ~ 125°C). The ESR specification is not provided for the Vishay part.

Q: What is the difference between Bulk and Cut Tape packaging formats?

A: Bulk packaging supplies components in loose form, suitable for manual assembly or small-quantity applications. Cut Tape (CT) packaging supplies components on continuous tape that is cut to specified lengths, optimized for automated pick-and-place assembly equipment. Both formats contain the same component; packaging selection depends on assembly process requirements.

Q: Are all three parts RoHS compliant?

A: No. The T322B685K015AS is RoHS non-compliant. The T322B685K015AT and 173D685X9015VWE3 are both ROHS3 compliant. Applications requiring RoHS compliance certification must use either T322B685K015AT or 173D685X9015VWE3.

Q: Can these parts be used interchangeably in the same circuit board layout?

A: Yes. All three parts share identical physical dimensions (0.110" Dia x 0.290" L) and axial through-hole mounting configuration. No circuit board layout modifications are required when substituting between these parts.

Q: What is the significance of the ESR specification?

A: ESR (Equivalent Series Resistance) affects the capacitor's high-frequency performance and ripple current handling capability. The T322B685K015AS and T322B685K015AT both specify 4 Ohm ESR. The 173D685X9015VWE3 does not provide an ESR specification in the available data. For applications where ESR is a critical design parameter, the KEMET parts with specified 4 Ohm ESR are preferred.

Q: What is the operating temperature range for these capacitors?

A: All three parts operate across the temperature range of -55°C to 125°C. This range is suitable for industrial and commercial applications requiring extended temperature performance.