T86E476M020EASS Equivalent & Substitute Parts

Part Overview

The T86E476M020EASS 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 suitable substitute parts essential for ongoing production and maintenance applications. The part features a fail-safe design with built-in fuse and operates across a temperature range of -55°C to 125°C. Due to its obsolete status, equivalent alternatives from active product lines are necessary to ensure supply chain continuity.

Substiute Parts

T86E476M020EASS

Vishay SpragueIn Stock: 788T86E476M020EASS Datasheet

Current PartRFQ

T496X476M020AT

KEMETIn Stock: 720T496X476M020AT Datasheet

DirectRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution of the T86E476M020EASS is determined by strict equivalence across the following critical parameters:

• Capacitance value: 47 µF (exact match required)
• Voltage rating: 20 V (exact match required)
• Tolerance: ±20% (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)
• Type: Molded Tantalum (exact match required)

The T496X476M020AT from KEMET qualifies as a direct substitute, meeting all mandatory electrical and mechanical parameters. Variations in ESR (600 mOhm vs. 300 mOhm) and product status (obsolete vs. active) do not preclude substitution when the core functional parameters align.

Parameter Comparison

Engineering Selection Recommendations

The T496X476M020AT from KEMET is a qualified substitute for the obsolete T86E476M020EASS. Both components share identical electrical specifications (47 µF, 20 V, ±20% tolerance) and mechanical compatibility (2917 package, surface mount, identical dimensions). The KEMET part offers the advantage of active product status, ensuring long-term availability and supply chain reliability.

The T496X476M020AT provides improved ESR performance (300 mOhm versus 600 mOhm), which may reduce heat generation in applications sensitive to series resistance. Both parts maintain MSL 1 moisture sensitivity classification and operate across the full -55°C to 125°C temperature range.

The KEMET substitute carries ROHS3 compliance, whereas the original Vishay part is RoHS non-compliant. This distinction is relevant for applications subject to RoHS regulatory requirements. Both components are REACH unaffected and classified under ECCN EAR99.

Frequently Asked Questions (FAQ)

Q: Can the T496X476M020AT be used as a direct replacement for the T86E476M020EASS?

A: Yes. Both parts are 47 µF, 20 V molded tantalum capacitors in the 2917 (7343 Metric) surface mount package with identical physical dimensions and operating temperature ranges. Electrical specifications and tolerance are equivalent.

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

A: The T496X476M020AT has lower ESR (300 mOhm) compared to the T86E476M020EASS (600 mOhm). Lower ESR reduces resistive losses and heat generation. This difference does not prevent substitution but may improve circuit performance in applications where ESR is a design consideration.

Q: Are there any compliance differences between these parts?

A: The T496X476M020AT is ROHS3 compliant, while the T86E476M020EASS is RoHS non-compliant. Both are REACH unaffected. For applications requiring RoHS compliance, the KEMET substitute is the appropriate choice.

Q: Why is the original part listed as obsolete?

A: The T86E476M020EASS from Vishay Sprague's TANTAMOUNT T86 series has reached end-of-life status. The T496X476M020AT from KEMET's active T496 series provides equivalent functionality with current manufacturing support.

Q: Are the physical dimensions identical?

A: Yes. Both parts measure 0.287" L x 0.169" W (7.30mm x 4.30mm) with a maximum seated height of 0.169" (4.30mm). They are pin-compatible and footprint-compatible for PCB applications.

Q: What is the moisture sensitivity classification for both parts?

A: Both the T86E476M020EASS and T496X476M020AT are classified as MSL 1 (Unlimited), indicating no moisture sensitivity restrictions for storage or handling.