T86D156K025EBAL Equivalent & Substitute Parts

Part Overview

The T86D156K025EBAL is a 15 µF molded tantalum capacitor rated at 25 V, manufactured by Vishay Sprague as part of the TANTAMOUNT™ T86 series. This component is classified as obsolete, making equivalent substitute parts necessary for new designs and ongoing production support. The part features a fail-safe design with built-in fuse and high reliability ratings, housed in a 2917 (7343 Metric) surface mount package.

Key Parameters

Parameter	Value
Capacitance	15 µF
Tolerance	±10%
Voltage - Rated	25 V
Type	Molded
ESR (Equivalent Series Resistance)	400 mOhm
Operating Temperature Range	-55°C to 125°C
Mounting Type	Surface Mount
Package / Case	2917 (7343 Metric)
Size / Dimension	0.287" L x 0.169" W (7.30 mm x 4.30 mm)
Height - Seated (Max)	0.122" (3.10 mm)
Manufacturer Size Code	D
Product Status	Obsolete
RoHS Status	RoHS non-compliant
Moisture Sensitivity Level (MSL)	1 (Unlimited)

Substitute Part Grouping Explanation

All four substitute parts (T95D156K035ESSS, T95D156K035LSAS, T95D156K035LZAS, T95D156K035LZSS) are qualified equivalents based on the following substitution criteria:

Matching Parameters:

Capacitance: 15 µF (identical)
Tolerance: ±10% (identical)
Operating Temperature Range: -55°C to 125°C (identical)
Mounting Type: Surface Mount (identical)
Package / Case: 2917 (7343 Metric) (identical)
Manufacturer Size Code: D (identical)
ESR: 410 mOhm (functionally equivalent, within acceptable tolerance)

Upgrade Parameters:

Voltage - Rated: 35 V (upgraded from 25 V, provides higher voltage margin)
Type: Conformal Coated (upgraded from Molded, enhanced environmental protection)
Product Status: Active (upgraded from Obsolete, ensures long-term availability)

The substitute parts represent a voltage upgrade from 25 V to 35 V with improved coating technology, maintaining identical capacitance, tolerance, temperature range, and physical package dimensions.

Parameter Comparison

Parameter	T86D156K025EBAL (Main)	T95D156K035ESSS	T95D156K035LSAS	T95D156K035LZAS	T95D156K035LZSS
Capacitance	15 µF	15 µF	15 µF	15 µF	15 µF
Tolerance	±10%	±10%	±10%	±10%	±10%
Voltage - Rated	25 V	35 V	35 V	35 V	35 V
Type	Molded	Conformal Coated	Conformal Coated	Conformal Coated	Conformal Coated
ESR (Equivalent Series Resistance)	400 mOhm	410 mOhm	410 mOhm	410 mOhm	410 mOhm
Operating Temperature	-55°C to 125°C	-55°C to 125°C	-55°C to 125°C	-55°C to 125°C	-55°C to 125°C
Mounting Type	Surface Mount	Surface Mount	Surface Mount	Surface Mount	Surface Mount
Package / Case	2917 (7343 Metric)	2917 (7343 Metric)	2917 (7343 Metric)	2917 (7343 Metric)	2917 (7343 Metric)
Size / Dimension	0.287" L x 0.169" W (7.30 mm x 4.30 mm)	0.293" L x 0.170" W (7.44 mm x 4.32 mm)	0.293" L x 0.170" W (7.44 mm x 4.32 mm)	0.293" L x 0.170" W (7.44 mm x 4.32 mm)	0.293" L x 0.170" W (7.44 mm x 4.32 mm)
Height - Seated (Max)	0.122" (3.10 mm)	0.122" (3.10 mm)	0.122" (3.10 mm)	0.122" (3.10 mm)	0.122" (3.10 mm)
Product Status	Obsolete	Active	Active	Active	Active
Moisture Sensitivity Level (MSL)	1 (Unlimited)	2A (4 Weeks)	2A (4 Weeks)	2A (4 Weeks)	2A (4 Weeks)
RoHS Status	RoHS non-compliant	RoHS non-compliant	RoHS non-compliant	RoHS non-compliant	RoHS non-compliant

Engineering Selection Recommendations

All four substitute parts are functionally equivalent for direct replacement of the T86D156K025EBAL in active production and new designs. Selection among the four T95 variants should be based on packaging and delivery requirements:

T95D156K035ESSS - Tape & Reel packaging, 929 units in stock T95D156K035LSAS - Tape & Reel packaging, 1137 units in stock (highest inventory) T95D156K035LZAS - Tape & Reel packaging, 977 units in stock T95D156K035LZSS - Tape & Reel packaging, 975 units in stock

The upgrade from 25 V to 35 V rated voltage provides increased design margin and reliability. The conformal coating enhancement offers superior environmental protection compared to the molded construction of the original part. All substitute parts maintain active product status, ensuring long-term availability and supply chain continuity.

Frequently Asked Questions (FAQ)

Q: Can the T95D156K035 series parts directly replace the T86D156K025EBAL? A: Yes. The substitute parts maintain identical capacitance (15 µF), tolerance (±10%), operating temperature range (-55°C to 125°C), and physical package dimensions (2917/7343 Metric). The 35 V rating is a voltage upgrade that is backward compatible with 25 V circuit requirements.

Q: What is the difference between the four T95 substitute part numbers? A: All four parts share identical electrical specifications and physical dimensions. The differences are in the final suffix codes, which denote packaging configuration and lead finish options. All are supplied in Tape & Reel format.

Q: Does the conformal coating affect circuit performance? A: No. The conformal coating is an environmental protection enhancement that does not alter the electrical characteristics. ESR remains functionally equivalent at 410 mOhm versus the original 400 mOhm.

Q: Are there any PCB layout considerations when switching from the original part? A: Minimal. The substitute parts have slightly larger dimensions (0.293" L x 0.170" W versus 0.287" L x 0.169" W), but height remains identical at 0.122" (3.10 mm). Verify PCB footprint clearance for the marginal length and width increase.

Q: What is the Moisture Sensitivity Level difference? A: The original part has MSL 1 (Unlimited shelf life). Substitute parts have MSL 2A (4 weeks shelf life after bag opening). Standard moisture control procedures during assembly are required.

Q: Are all substitute parts currently available? A: Yes. All four T95D156K035 variants are active products with current inventory levels ranging from 929 to 1137 units.

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