T494D157K016AS Equivalent & Substitute Parts

Part Overview

The T494D157K016AS is a 150 µF molded tantalum capacitor manufactured by KEMET, rated for 16 V operation in a 2917 (7343 Metric) surface mount package. This component is classified as obsolete, indicating discontinuation from the manufacturer's active product line. Identification of equivalent and substitute parts is necessary to maintain design continuity and ensure component availability for production and repair applications.

Substiute Parts

T494D157K016AS

KEMETIn Stock: 752T494D157K016AS Datasheet

Current PartRFQ

T494D157K016AT

KEMETIn Stock: 2157T494D157K016AT Datasheet

DirectRFQ

TPSD157K016H0125

KYOCERA AVXIn Stock: 1073TPSD157K016H0125 Datasheet

SimilarRFQ

TPSD157K016H0150

KYOCERA AVXIn Stock: 1076TPSD157K016H0150 Datasheet

SimilarRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution of the T494D157K016AS is determined by strict equivalence across the following critical parameters:

Mandatory Matching Parameters:

• Capacitance: 150 µF
• Voltage Rating: 16 V
• Tolerance: ±10%
• Package / Case: 2917 (7343 Metric)
• Mounting Type: Surface Mount
• Operating Temperature Range: -55°C ~ 125°C
• Type: Molded Tantalum

Variable Parameters Permitting Substitution:

• ESR (Equivalent Series Resistance): Substitutes may vary from 125 mOhm to 400 mOhm
• Product Status: Active products substitute for obsolete products
• Packaging Format: Tape & Reel (TR) substitutes for standard packaging
• RoHS Compliance: Compliant versions substitute for non-compliant versions

Substitute parts are grouped into two categories: direct manufacturer equivalents from KEMET and cross-manufacturer alternatives from KYOCERA AVX. All substitutes maintain identical electrical performance within the specified tolerance and operating parameters.

Parameter Comparison

Engineering Selection Recommendations

T494D157K016AT (KEMET Direct Equivalent)

The T494D157K016AT is the primary substitute for the obsolete T494D157K016AS. Both components are manufactured by KEMET within the same T494 series and share identical electrical specifications, including 150 µF capacitance, 16 V rating, ±10% tolerance, and 400 mOhm ESR. The T494D157K016AT is currently in active production status and is available in Tape & Reel packaging format. This part achieves RoHS3 compliance, providing regulatory advantage over the original component. Selection of this part is appropriate for applications requiring direct form-fit-function replacement with enhanced compliance status.

TPSD157K016H0150 (KYOCERA AVX Cross-Manufacturer Equivalent)

The TPSD157K016H0150 is a cross-manufacturer substitute from KYOCERA AVX's TPS series. This component maintains identical capacitance, voltage rating, tolerance, package dimensions, and operating temperature range. The ESR specification is 150 mOhm, which is lower than the original 400 mOhm specification. This part is in active production status and available in Tape & Reel packaging. Selection of this part is appropriate when cross-manufacturer sourcing is required or when lower ESR performance is beneficial to circuit operation.

TPSD157K016H0125 (KYOCERA AVX Cross-Manufacturer Equivalent)

The TPSD157K016H0125 is an alternative cross-manufacturer substitute from KYOCERA AVX's TPS series. This component maintains identical capacitance, voltage rating, tolerance, package dimensions, and operating temperature range. The ESR specification is 125 mOhm, representing the lowest ESR among all substitutes. This part is in active production status and available in Tape & Reel packaging. Selection of this part is appropriate when cross-manufacturer sourcing is required or when minimum ESR performance is a design requirement.

Frequently Asked Questions (FAQ)

Q: Can the T494D157K016AT be used as a direct replacement for the T494D157K016AS?

A: Yes. The T494D157K016AT is a direct equivalent manufactured by KEMET. Both components share identical capacitance (150 µF), voltage rating (16 V), tolerance (±10%), package (2917 / 7343 Metric), ESR (400 mOhm), and operating temperature range (-55°C ~ 125°C). The primary differences are product status (active versus obsolete) and RoHS compliance (RoHS3 compliant versus non-compliant). The T494D157K016AT is available in Tape & Reel packaging, which is standard for active production components.

Q: What is the difference between the KYOCERA AVX substitutes and the KEMET equivalent?

A: The KYOCERA AVX substitutes (TPSD157K016H0150 and TPSD157K016H0125) are cross-manufacturer alternatives that maintain all critical electrical parameters: 150 µF capacitance, 16 V rating, ±10% tolerance, and identical package dimensions. The primary differences are manufacturer identity and ESR specification. TPSD157K016H0150 has 150 mOhm ESR, and TPSD157K016H0125 has 125 mOhm ESR, both lower than the original 400 mOhm specification. All three substitutes are electrically compatible with the original component.

Q: Does lower ESR in the KYOCERA AVX parts affect circuit compatibility?

A: Lower ESR values do not create incompatibility. ESR is a parasitic resistance characteristic that affects impedance and thermal performance. Lower ESR values (125 mOhm and 150 mOhm) represent improved performance compared to the original 400 mOhm specification. Applications designed for 400 mOhm ESR will function correctly with lower ESR substitutes. Circuit performance may improve due to reduced impedance and lower heat generation.

Q: Are all substitute parts available in the same package format?

A: The T494D157K016AS is supplied in standard packaging, while all three substitutes (T494D157K016AT, TPSD157K016H0150, and TPSD157K016H0125) are supplied in Tape & Reel (TR) format. Tape & Reel packaging is the standard format for active production surface mount components and is compatible with automated assembly equipment. No functional or electrical differences exist between packaging formats.

Q: What is the RoHS compliance status of each substitute?

A: The T494D157K016AT achieves RoHS3 compliance, providing regulatory advantage. The KYOCERA AVX substitutes (TPSD157K016H0150 and TPSD157K016H0125) are RoHS non-compliant, matching the compliance status of the original T494D157K016AS. Selection between compliant and non-compliant parts depends on regulatory requirements for the end application.

Q: Are all parts rated for the same operating temperature range?

A: Yes. All substitute parts maintain the identical operating temperature range of -55°C ~ 125°C. All components are rated for 2000 hours lifetime at 125°C maximum operating temperature. Thermal performance characteristics are equivalent across all substitutes.

Q: Can these parts be used interchangeably on the same PCB assembly?

A: Yes. All substitute parts share identical package dimensions (0.287" L x 0.169" W / 7.30mm x 4.30mm) and maximum seated height (0.122" / 3.10mm). All components are surface mount devices with identical footprint requirements. No PCB layout modifications are necessary when substituting between these parts.