Vishay Sprague T86D156K025ESSL Tantalum Capacitor Equivalent & Substitute Parts

Part Overview

The Vishay Sprague T86D156K025ESSL is a 15 µF molded tantalum capacitor rated at 25 V with ±10% tolerance, housed in a 2917 (7343 Metric) surface mount package. This component features a fail-safe built-in fuse and high reliability design with 400 mOhm equivalent series resistance. The part is currently obsolete, making substitute components necessary for ongoing production and maintenance applications. All substitute parts maintain the same capacitance, tolerance, package footprint, and operating temperature range while offering enhanced voltage ratings and conformal coating options.

Substiute Parts

T86D156K025ESSL

Vishay SpragueIn Stock: 918T86D156K025ESSL Datasheet

Current PartRFQ

T95D156K035ESAS

Vishay SpragueIn Stock: 1127T95D156K035ESAS Datasheet

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T95D156K035LZSS

Vishay SpragueIn Stock: 1023T95D156K035LZSS Datasheet

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T95D156K035ESSS

Vishay SpragueIn Stock: 958T95D156K035ESSS Datasheet

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T95D156K035EZSS

Vishay SpragueIn Stock: 662T95D156K035EZSS Datasheet

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T95D156K035LSAS

Vishay SpragueIn Stock: 1161T95D156K035LSAS Datasheet

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T95D156K035LZAS

Vishay SpragueIn Stock: 1047T95D156K035LZAS Datasheet

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Key Parameters

Substitute Part Grouping Explanation

Substitution of the T86D156K025ESSL is based on strict electrical and mechanical compatibility criteria. All substitute parts maintain identical capacitance (15 µF), tolerance (±10%), package dimensions (2917 / 7343 Metric), and operating temperature range (-55°C to 125°C). The substitute parts are from the Vishay Sprague TANTAMOUNT™ T95 series, which feature conformal coating and an upgraded voltage rating of 35 V. This higher voltage rating provides design margin while maintaining full backward compatibility with the original 25 V application requirement. The ESR specification remains within acceptable parameters at 410 mOhm, representing a negligible increase from the original 400 mOhm. All substitute parts are active products with established supply chains, addressing the obsolescence of the original component.

Parameter Comparison

Engineering Selection Recommendations

All listed substitute parts are active Vishay Sprague TANTAMOUNT™ T95 series components with established production status and supply availability. The T95D156K035ESAS, T95D156K035LZSS, T95D156K035ESSS, T95D156K035EZSS, T95D156K035LSAS, and T95D156K035LZAS are electrically and mechanically interchangeable with the obsolete T86D156K025ESSL. The 35 V voltage rating of all substitutes exceeds the original 25 V specification, providing additional design margin without compromising circuit performance. The conformal coating applied to T95 series parts enhances environmental protection compared to the molded construction of the original component. Physical dimensions remain compatible with existing PCB layouts, with height and footprint specifications maintained across all alternatives. Selection among the six substitute options may be based on packaging preference (Tape & Reel format) and inventory availability, as all electrical and mechanical parameters are identical.

Frequently Asked Questions (FAQ)

Q: Can T95D156K035 series parts directly replace the T86D156K025ESSL in existing designs?

A: Yes. All substitute parts maintain identical capacitance (15 µF), tolerance (±10%), package footprint (2917 / 7343 Metric), height (3.10mm maximum), and operating temperature range (-55°C to 125°C). The higher 35 V voltage rating is fully backward compatible with 25 V circuit requirements.

Q: What is the difference between the six T95 substitute options?

A: All six substitute parts (T95D156K035ESAS, T95D156K035LZSS, T95D156K035ESSS, T95D156K035EZSS, T95D156K035LSAS, T95D156K035LZAS) are electrically and mechanically identical. Differences are limited to internal manufacturing codes and packaging designations. Selection is based on supplier availability and packaging format preference.

Q: How does the ESR difference (400 mOhm vs. 410 mOhm) affect circuit performance?

A: The 10 mOhm increase in ESR between the original and substitute parts is negligible for most applications. This represents a 2.5% increase and falls within normal manufacturing tolerances for tantalum capacitors.

Q: Are there any moisture sensitivity considerations when using T95 substitutes?

A: The T95 series carries MSL 2A (4 Weeks) rating compared to MSL 1 (Unlimited) for the original part. This requires standard moisture control during storage and handling. Baking procedures may be necessary if parts are exposed to humidity before assembly.

Q: Do the substitute parts maintain the fail-safe fuse feature?

A: The T95 series features high reliability design. The original T86 part specified a fail-safe built-in fuse; the T95 series emphasizes high reliability without explicit fuse designation in the provided specifications.

Q: What is the physical size difference between the original and substitute parts?

A: Substitute parts measure 0.293" L x 0.170" W (7.44mm x 4.32mm) compared to the original 0.287" L x 0.169" W (7.30mm x 4.30mm). The difference is approximately 0.006" in length and 0.001" in width, which is negligible for standard PCB layouts with normal component spacing.