T86D156M020EBAS Equivalent & Substitute Parts

Part Overview

The T86D156M020EBAS is a 15 µF molded tantalum capacitor manufactured by Vishay Sprague, rated for 20 V operation in a 2917 (7343 Metric) surface mount package. This component features a fail-safe design with built-in fuse and operates across the temperature range of -55°C to 125°C with an ESR of 900mOhm.

The product is currently obsolete, making identification of suitable substitute components essential for ongoing system support, design updates, and procurement continuity. Substitute parts must maintain electrical compatibility while meeting current manufacturing and compliance standards.

Substiute Parts

T86D156M020EBAS

Vishay SpragueIn Stock: 857T86D156M020EBAS Datasheet

Current PartRFQ

T496X156M035ATE900

KEMETIn Stock: 1468T496X156M035ATE900 Datasheet

DirectRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution of the T86D156M020EBAS is determined by strict adherence to the following electrical and mechanical parameters:

Critical Matching Parameters:

• Capacitance: 15 µF (exact match required)
• Tolerance: ±20% (exact match required)
• Type: Molded Tantalum (exact match required)
• ESR: 900mOhm (exact match required)
• Operating Temperature Range: -55°C to 125°C (exact match required)
• Mounting Type: Surface Mount (exact match required)
• Package / Case: 2917 (7343 Metric) (exact match required)
• Physical Dimensions: 0.287" L x 0.169" W (7.30mm x 4.30mm) (exact match required)

Allowable Variation Parameter:

• Voltage - Rated: Substitute parts may have equal or higher voltage ratings than the original 20 V specification, provided all other parameters remain unchanged.

The T496X156M035ATE900 qualifies as a direct substitute because it maintains all critical parameters while providing a higher voltage rating (35 V), which is acceptable for applications originally designed for 20 V operation.

Parameter Comparison

Engineering Selection Recommendations

The T496X156M035ATE900 is the qualified substitute for the obsolete T86D156M020EBAS based on the following factors:

Electrical Compatibility: The substitute maintains identical capacitance (15 µF), tolerance (±20%), ESR (900mOhm), and operating temperature range (-55°C to 125°C). The increased voltage rating (35 V versus 20 V) provides additional design margin and is fully compatible with applications originally specified for 20 V operation.

Mechanical Compatibility: Both components share the same 2917 (7343 Metric) package footprint and physical dimensions (0.287" L x 0.169" W). The substitute has a slightly increased seated height (0.169" versus 0.122"), which must be verified against PCB clearance constraints in the target application.

Product Status and Compliance: The T496X156M035ATE900 is an active product with current manufacturing support. It meets ROHS3 compliance requirements, whereas the original part is RoHS non-compliant. The substitute includes documented lifetime specifications (2000 Hrs @ 85°C), providing reliability data for system design validation.

Packaging: The substitute is available in Tape & Reel (TR) format, supporting automated assembly processes.

Frequently Asked Questions (FAQ)

Q: Can the T496X156M035ATE900 be used as a direct replacement for the T86D156M020EBAS?

A: Yes. The substitute maintains all critical electrical parameters (capacitance, tolerance, ESR, temperature range) and mechanical specifications (package, footprint, dimensions). The higher voltage rating (35 V) is acceptable for 20 V applications. Verify that the increased seated height (0.169" versus 0.122") does not conflict with PCB clearance requirements.

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

A: A 35 V rated capacitor can safely operate at voltages up to 35 V. When used in a 20 V application, it operates well within its voltage margin, which is electrically safe and does not degrade performance. This provides additional design headroom for transient voltage conditions.

Q: Are there any compliance differences between the main part and substitute?

A: Yes. The original T86D156M020EBAS is RoHS non-compliant, while the T496X156M035ATE900 meets ROHS3 compliance standards. This is significant for applications subject to RoHS regulations or customer requirements.

Q: Does the increased seated height of the substitute affect PCB design?

A: The substitute has a maximum seated height of 0.169" compared to 0.122" for the original part. This 0.047" increase must be evaluated against available PCB clearance, component stacking, and enclosure constraints in the target application.

Q: What is the ESR specification and why is it important?

A: ESR (Equivalent Series Resistance) of 900mOhm is identical on both parts. ESR affects capacitor performance in filtering and decoupling applications. Matching ESR ensures equivalent electrical behavior in the circuit.

Q: Is the T496X156M035ATE900 available in the same packaging format?

A: The substitute is supplied in Tape & Reel (TR) format, which is standard for automated assembly. The original part packaging format is not specified in the provided data.