T86C685K016ESAS Equivalent & Substitute Parts

Part Overview

The T86C685K016ESAS is a 6.8 µF molded tantalum capacitor manufactured by Vishay Sprague, rated for 16 V operation in a 2312 (6032 Metric) surface mount package. This component features a built-in fail-safe fuse and is designed for high-reliability applications with an operating temperature range of -55°C to 125°C. The part is currently obsolete, making identification of suitable substitute components essential for ongoing production and maintenance requirements.

Substiute Parts

T86C685K016ESAS

Vishay SpragueIn Stock: 812T86C685K016ESAS Datasheet

Current PartRFQ

T496C685K020AT

KEMETIn Stock: 926T496C685K020AT Datasheet

DirectRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution of the T86C685K016ESAS is determined by strict equivalence across the following critical parameters:

• Capacitance value: 6.8 µF (exact match required)
• Tolerance: ±10% (exact match required)
• Type: Molded tantalum (exact match required)
• ESR: 2 Ohm (exact match required)
• Operating temperature range: -55°C to 125°C (exact match required)
• Mounting type: Surface Mount (exact match required)
• Package / Case: 2312 (6032 Metric) (exact match required)
• Physical dimensions: 0.236" L x 0.126" W, height 0.110" max (exact match required)
• Features: Fail Safe with Built-in Fuse (exact match required)
• Moisture Sensitivity Level: 1 (Unlimited) (exact match required)

The rated voltage may be equal to or higher than the original specification, provided all other parameters remain unchanged. The T496C685K020AT meets all substitution criteria with a higher voltage rating (20 V vs. 16 V), which is acceptable for direct replacement in applications where the original 16 V rating is sufficient.

Parameter Comparison

Engineering Selection Recommendations

The T496C685K020AT is a direct functional substitute for the T86C685K016ESAS. The substitute part maintains electrical equivalence across all critical parameters: identical capacitance, tolerance, ESR, operating temperature range, and physical package dimensions. The higher voltage rating (20 V vs. 16 V) provides additional design margin without affecting circuit performance in applications designed for 16 V operation.

The T496C685K020AT offers significant advantages for new designs and ongoing production: it is currently in active production status, whereas the original part is obsolete. The substitute part is ROHS3 compliant, addressing regulatory requirements that may not be met by the non-compliant original part. The substitute also provides documented lifetime performance data (2000 Hrs @ 85°C), supporting reliability assessments for critical applications.

Both parts maintain identical moisture sensitivity levels and fail-safe fuse features, ensuring compatibility with existing assembly and handling procedures.

Frequently Asked Questions (FAQ)

Q: Can the T496C685K020AT be used as a direct replacement for the T86C685K016ESAS?

A: Yes. The T496C685K020AT meets all electrical and mechanical substitution criteria. Both parts share identical capacitance (6.8 µF), tolerance (±10%), ESR (2 Ohm), operating temperature range (-55°C to 125°C), and package dimensions (2312 / 6032 Metric). The higher voltage rating of the substitute part (20 V vs. 16 V) is acceptable for direct replacement in circuits designed for 16 V operation.

Q: Are there any physical compatibility concerns with the substitute part?

A: No. Both parts use the identical 2312 (6032 Metric) surface mount package with matching physical dimensions (0.236" L x 0.126" W, 0.110" max height). PCB footprints and assembly processes require no modification.

Q: What is the significance of the higher voltage rating on the substitute part?

A: The T496C685K020AT is rated for 20 V operation compared to the original 16 V rating. This higher voltage specification provides additional design margin and does not affect performance in circuits operating at or below 16 V. The substitute part will function identically to the original in all applications where the original was specified.

Q: Does the RoHS compliance difference affect substitution?

A: The T496C685K020AT is ROHS3 compliant, while the original T86C685K016ESAS is RoHS non-compliant. For applications subject to RoHS regulations, the substitute part satisfies compliance requirements. For legacy systems without RoHS requirements, both parts are functionally equivalent.

Q: Are the fail-safe fuse features identical between the two parts?

A: Both parts include fail-safe fuses as a standard feature. This protection mechanism is preserved in the substitute part, maintaining equivalent safety characteristics for circuit protection.