T97R686K025LSA Equivalent & Substitute Parts

Part Overview

The T97R686K025LSA is a 68 µF conformal coated tantalum capacitor manufactured by Vishay Sprague, rated for 25 V operation in the 3024 (7660 Metric) package. This component is designed for surface mount applications requiring high reliability in demanding environments. The conformal coating provides enhanced protection against moisture and contaminants, making it suitable for aerospace, military, and industrial applications. As an active product with 911 units in stock, substitutes may be required due to supply constraints, design optimization, or application-specific packaging preferences.

Substiute Parts

T97R686K025LSA

Vishay SpragueIn Stock: 946T97R686K025LSA Datasheet

Current PartRFQ

TAZV686K025LBSB0024

KYOCERA AVXIn Stock: 984TAZV686K025LBSB0024 Datasheet

MFR RecommendedRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution of the T97R686K025LSA is determined by the following critical parameters:

• Electrical Equivalence: Capacitance (68 µF), tolerance (±10%), and voltage rating (25 V) must remain identical
• Mechanical Compatibility: Package type and surface mount configuration must accommodate the application's PCB layout
• Environmental Performance: Operating temperature range and moisture sensitivity must meet or exceed application requirements
• Reliability Classification: COTS (Commercial Off-The-Shelf) rating maintained across substitutes

The TAZV686K025LBSB0024 from KYOCERA AVX meets the electrical specifications (68 µF, ±10%, 25 V) and maintains surface mount compatibility. However, the substitute uses a molded construction (versus conformal coating) and operates in a different package footprint (2824 versus 3024), with an extended upper operating temperature of 125°C and higher moisture sensitivity level (3 versus 2A).

Parameter Comparison

Engineering Selection Recommendations

Both the T97R686K025LSA and TAZV686K025LBSB0024 maintain active product status and identical electrical specifications (68 µF, ±10%, 25 V). Selection between these components depends on application-specific constraints:

The T97R686K025LSA is the primary choice for applications requiring conformal coating protection and operation within the -55°C to 85°C temperature range. The conformal coating provides superior moisture and contamination resistance, critical for high-reliability aerospace and military applications.

The TAZV686K025LBSB0024 is suitable as a substitute when the extended operating temperature range (-55°C to 125°C) is required and conformal coating is not mandatory. The molded construction and smaller package footprint (2824 versus 3024) may offer space optimization benefits. However, the higher moisture sensitivity level (3 versus 2A) requires consideration in humid or marine environments.

Both components are RoHS non-compliant and carry identical ECCN and HTSUS classifications, maintaining regulatory consistency.

Frequently Asked Questions (FAQ)

Q: Can the TAZV686K025LBSB0024 be used as a direct replacement for the T97R686K025LSA?

A: Electrical substitution is valid (identical capacitance, tolerance, and voltage rating). However, mechanical and environmental differences exist. The substitute uses a different package footprint (2824 versus 3024), requiring PCB layout verification. The molded construction lacks conformal coating protection, and the higher MSL rating (3 versus 2A) indicates reduced moisture resistance.

Q: What is the impact of the package size difference between 3024 and 2824?

A: The 2824 package is slightly smaller in length (7.30mm versus 7.60mm) and height (3.75mm versus 4.00mm), while width is comparable (6.10mm versus 6.00mm). PCB footprint compatibility must be confirmed before substitution. The smaller height may provide layout advantages in space-constrained designs.

Q: Why does the substitute have a higher operating temperature range?

A: The TAZV686K025LBSB0024 operates to 125°C versus 85°C for the T97R686K025LSA. This extended range reflects the molded construction's thermal capabilities. Applications limited to 85°C operation will not benefit from this specification difference.

Q: What does the MSL rating difference mean for handling and storage?

A: The T97R686K025LSA carries MSL 2A (4 weeks of floor life), while the substitute is MSL 3 (168 hours or 1 week). MSL 3 components require more stringent moisture control during storage and handling. Higher MSL ratings indicate greater sensitivity to moisture absorption and require shorter shelf life windows before reflow soldering.

Q: Is ESR specification critical for substitution?

A: The main part specifies 100 mOhm ESR; the substitute does not provide this value. ESR affects ripple current handling and thermal performance. Applications with strict ESR requirements should confirm the substitute's ESR specification with the manufacturer before implementation.