Vishay Sprague 173D686X0010Y Equivalent & Substitute Parts

Part Overview

The Vishay Sprague 173D686X0010Y is a 68 µF molded tantalum capacitor rated at 10 V with axial through-hole mounting. This component is classified as Active product status and is designed for general-purpose applications requiring stable capacitance in compact form factors. Substitute parts are identified when equivalent electrical performance can be maintained within the allowed parameter tolerances for this product category, particularly when higher voltage ratings or improved tolerance specifications are required for circuit redesign or component availability.

Substiute Parts

173D686X0010Y

Vishay SpragueIn Stock: 1081173D686X0010Y Datasheet

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T322E686K020AS

KEMETIn Stock: 818T322E686K020AS Datasheet

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Key Parameters

Substitute Part Grouping Explanation

Substitution of the 173D686X0010Y is permissible with the KEMET T322E686K020AS based on the following criteria:

Matching Parameters:

• Capacitance: 68 µF (identical)
• Type: Molded tantalum (identical)
• Mounting Type: Through hole (identical)
• Package / Case: Axial (identical)
• Operating Temperature Range: -55°C ~ 125°C (identical)

Allowable Variations:

• Voltage Rating: The substitute part is rated at 20 V, which exceeds the original 10 V specification. Higher voltage ratings are acceptable substitutes as they provide additional safety margin and circuit protection.
• Tolerance: The substitute part specifies ±10% tolerance versus the original ±20%. Tighter tolerance is an acceptable upgrade.
• ESR: The substitute part provides 900 mOhm ESR specification, whereas the original part does not specify this parameter. This addition does not restrict substitution.

Parameter Comparison

Engineering Selection Recommendations

Both the 173D686X0010Y and T322E686K020AS maintain Active product status, ensuring continued manufacturer support and availability. Both components share identical RoHS non-compliant and REACH Unaffected compliance classifications, making them suitable for applications where these regulatory statuses are acceptable.

The KEMET T322E686K020AS provides enhanced electrical specifications through a higher voltage rating (20 V versus 10 V) and improved tolerance (±10% versus ±20%). The substitute part's tighter tolerance and elevated voltage rating offer increased design margin without compromising form factor compatibility, as both components maintain identical axial through-hole mounting and nearly equivalent physical dimensions.

Selection between these parts should be based on circuit voltage requirements, tolerance specifications needed for the application, and component availability. The substitute part is electrically superior for applications requiring enhanced reliability margins.

Frequently Asked Questions (FAQ)

Q: Can the KEMET T322E686K020AS replace the Vishay Sprague 173D686X0010Y in all applications?

A: The KEMET substitute is compatible with circuits designed for the original part. The higher 20 V rating and ±10% tolerance represent improvements over the original 10 V and ±20% specifications. Physical dimensions are nearly identical (0.530" L versus 0.550" L), with both maintaining 0.280" diameter and axial through-hole mounting.

Q: What is the significance of the voltage rating difference?

A: The substitute part's 20 V rating provides additional voltage headroom beyond the original 10 V specification. This higher rating does not affect performance in 10 V circuits but offers increased safety margin and protection against voltage transients.

Q: How does the tolerance difference affect circuit performance?

A: The substitute part's ±10% tolerance is tighter than the original ±20%. This means capacitance values will be more closely matched to the nominal 68 µF specification, which may improve circuit performance in applications sensitive to capacitance variation.

Q: Are there physical installation concerns when substituting these parts?

A: Both components are axial through-hole mounted with identical 0.280" diameter. The substitute part is 0.020" shorter (0.530" versus 0.550"), which presents no installation obstacles in standard PCB layouts.

Q: Do both parts share the same regulatory compliance status?

A: Yes. Both the original and substitute parts are RoHS non-compliant and REACH Unaffected, maintaining identical compliance classifications.