Equivalent & Substitute Parts for T86C155K035ESSL

Part Overview

The T86C155K035ESSL is a 1.5 µF molded tantalum capacitor rated at 35 V, manufactured by Vishay Sprague as part of the TANTAMOUNT™ T86 series. This component is designed for surface mount applications in the 2312 (6032 Metric) package format. The part is currently listed as obsolete, making identification of suitable substitute components essential for ongoing design support and procurement continuity.

Substiute Parts

T86C155K035ESSL

Vishay SpragueIn Stock: 690T86C155K035ESSL Datasheet

Current PartRFQ

TH3C155K035D3300

Vishay SpragueIn Stock: 942TH3C155K035D3300 Datasheet

DirectRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution of the T86C155K035ESSL is determined by strict equivalence across the following parameters:

• Capacitance value: 1.5 µF (exact match required)
• Tolerance: ±10% (exact match required)
• Voltage rating: 35 V (exact match required)
• Package / Case: 2312 (6032 Metric) (exact match required)
• Mounting type: Surface Mount (exact match required)
• Physical dimensions: 0.236" L x 0.126" W, height 0.110" max (exact match required)
• Molded tantalum construction (exact match required)

The substitute part TH3C155K035D3300 meets all these criteria and is therefore a direct functional equivalent. Variations in ESR, operating temperature range, and product status do not affect substitutability for applications designed around the original part's electrical specifications.

Parameter Comparison

Engineering Selection Recommendations

The TH3C155K035D3300 is the direct substitute for the obsolete T86C155K035ESSL. Both components share identical electrical specifications (capacitance, tolerance, voltage rating) and physical form factor (2312 package, surface mount, identical dimensions).

The substitute part offers the following advantages:

• Active product status ensures ongoing availability and manufacturing support
• ROHS3 compliance versus non-compliant status of the original part
• AEC-Q200 automotive qualification rating provides enhanced reliability documentation
• Extended operating temperature range (-55°C to 150°C versus -55°C to 125°C) provides additional thermal margin
• Higher ESR (3.3 Ohm versus 2.6 Ohm) remains within acceptable limits for standard tantalum capacitor applications

Selection of TH3C155K035D3300 is appropriate for direct replacement in designs originally specified with T86C155K035ESSL.

Frequently Asked Questions (FAQ)

Q: Can TH3C155K035D3300 be used as a direct replacement for T86C155K035ESSL?

A: Yes. Both parts are 1.5 µF, 35 V molded tantalum capacitors in the 2312 (6032 Metric) package with identical physical dimensions and mounting characteristics. Electrical specifications match across all critical parameters.

Q: What is the difference in ESR between these parts?

A: The original T86C155K035ESSL has an ESR of 2.6 Ohm, while the substitute TH3C155K035D3300 has an ESR of 3.3 Ohm. This 0.7 Ohm difference is within normal manufacturing variation for molded tantalum capacitors and does not affect substitutability for standard applications.

Q: Does the extended temperature range of TH3C155K035D3300 affect compatibility?

A: No. The substitute part's operating range of -55°C to 150°C encompasses the original part's -55°C to 125°C range. This provides additional thermal margin and does not create compatibility issues.

Q: Are there packaging differences between these parts?

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

Q: Why is the original part listed as obsolete?

A: The T86C155K035ESSL is part of the legacy T86 series. Vishay Sprague has transitioned production to the active TH3 series, which includes the TH3C155K035D3300 substitute with improved compliance and reliability ratings.

Q: Is RoHS compliance a functional requirement for substitution?

A: RoHS compliance is a regulatory and supply chain consideration. The ROHS3-compliant substitute TH3C155K035D3300 is preferred for new designs and applications subject to environmental regulations. For legacy systems, functional equivalence remains the primary substitution criterion.