T86E476M020ESAS Equivalent & Substitute Parts

Part Overview

The T86E476M020ESAS is a 47 µF molded tantalum capacitor manufactured by Vishay Sprague, rated for 20 V operation in a 2917 (7343 Metric) surface mount package. This component is classified as obsolete, making identification of functionally equivalent alternatives necessary for ongoing design support and procurement continuity. The part features a fail-safe design with built-in fuse and operates across the industrial temperature range of -55°C to 125°C.

Substiute Parts

T86E476M020ESAS

Vishay SpragueIn Stock: 1144T86E476M020ESAS Datasheet

Current PartRFQ

T496X476M020AT

KEMETIn Stock: 720T496X476M020AT Datasheet

DirectRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution eligibility for the T86E476M020ESAS is determined by strict equivalence across the following critical parameters:

• Capacitance value: 47 µF (exact match required)
• Tolerance: ±20% (exact match required)
• Voltage rating: 20 V (exact match required)
• Package / Case: 2917 (7343 Metric) (exact match required)
• Mounting type: Surface Mount (exact match required)
• Operating temperature range: -55°C to 125°C (exact match or better required)
• Moisture sensitivity level: MSL 1 (exact match required)

The identified substitute part T496X476M020AT meets all mandatory electrical and mechanical parameters. Variations in ESR (600 mOhm vs. 300 mOhm) and product status (obsolete vs. active) are secondary considerations that do not disqualify substitution but may influence procurement strategy.

Parameter Comparison

Engineering Selection Recommendations

The T496X476M020AT from KEMET is a direct functional equivalent to the T86E476M020ESAS. Both components satisfy identical electrical and mechanical requirements for 47 µF, 20 V, ±20% tolerance molded tantalum capacitors in the 2917 package.

The KEMET substitute offers two additional advantages: active product status ensures long-term availability and supply chain stability, and ROHS3 compliance aligns with current environmental regulations. The lower ESR specification (300 mOhm versus 600 mOhm) in the KEMET part represents an improvement in performance characteristics without introducing incompatibility.

Selection of the T496X476M020AT is appropriate for new designs, redesigns, or procurement of replacement stock for existing applications currently using the T86E476M020ESAS.

Frequently Asked Questions (FAQ)

Q: Can the T496X476M020AT be used as a direct replacement for the T86E476M020ESAS in existing designs?

A: Yes. Both components share identical capacitance, voltage rating, tolerance, package dimensions, and operating temperature range. Physical and electrical compatibility is confirmed.

Q: What is the significance of the ESR difference between the two parts?

A: The T496X476M020AT has lower ESR (300 mOhm) compared to the T86E476M020ESAS (600 mOhm). Lower ESR generally reduces heat generation and improves high-frequency performance. This difference does not prevent substitution and may provide performance benefits in applications sensitive to ESR characteristics.

Q: Why is the original part listed as obsolete?

A: Obsolete status indicates the T86E476M020ESAS is no longer manufactured or supported by Vishay Sprague. The T496X476M020AT, with active product status, provides continuity for applications requiring this capacitor specification.

Q: Are there any compliance differences between these parts?

A: The T496X476M020AT is ROHS3 compliant, while the T86E476M020ESAS is RoHS non-compliant. For applications subject to RoHS regulations, the KEMET substitute is the appropriate choice.

Q: Will the T496X476M020AT fit the same PCB footprint as the T86E476M020ESAS?

A: Yes. Both components use the identical 2917 (7343 Metric) package with matching dimensions (0.287" L x 0.169" W, 7.30mm x 4.30mm) and maximum seated height (0.169" / 4.30mm). PCB layout and assembly compatibility is confirmed.