T494B226M016AS Equivalent & Substitute Parts

Part Overview

The T494B226M016AS is a 22 µF molded tantalum capacitor manufactured by KEMET, rated for 16 V operation with ±20% tolerance. This component is designed for surface mount applications in the 1411 (3528 Metric) package format. The part is classified as obsolete, necessitating identification of active equivalent alternatives for new designs and ongoing production requirements. Substitute parts must maintain electrical performance and mechanical compatibility while meeting current regulatory compliance standards.

Substiute Parts

T494B226M016AS

KEMETIn Stock: 1047T494B226M016AS Datasheet

Current PartRFQ

T494B226M016AT

KEMETIn Stock: 47391T494B226M016AT Datasheet

DirectRFQ

TR3B226M016C0700

Vishay SpragueIn Stock: 1160TR3B226M016C0700 Datasheet

SimilarRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution of the T494B226M016AS is determined by strict equivalence across the following critical parameters:

Mandatory Matching Parameters:

• Capacitance: 22 µF
• Voltage Rating: 16 V
• Tolerance: ±20%
• Package / Case: 1411 (3528 Metric)
• Mounting Type: Surface Mount
• Operating Temperature Range: -55°C to 125°C
• Moisture Sensitivity Level: 1 (Unlimited)

Allowable Variation:

• ESR (Equivalent Series Resistance): Substitutes may vary from the original 1 Ohm specification, provided the alternative value does not exceed circuit design limits
• Product Status: Active alternatives are preferred over obsolete originals
• Regulatory Compliance: RoHS3 compliance is preferred for new applications

Substitute parts are grouped into two categories: direct manufacturer equivalents from KEMET and cross-manufacturer alternatives that satisfy all mandatory electrical and mechanical parameters.

Parameter Comparison

Engineering Selection Recommendations

T494B226M016AT (KEMET): This part is the direct equivalent from the original manufacturer. It maintains identical electrical specifications and physical dimensions while offering active product status and RoHS3 compliance. The T494B226M016AT is supplied in Tape & Reel packaging, suitable for automated assembly processes. Selection of this part eliminates obsolescence risk and ensures regulatory compliance for new production.

TR3B226M016C0700 (Vishay Sprague): This cross-manufacturer alternative satisfies all mandatory electrical and mechanical parameters. The ESR specification is 700 mOhm, which is lower than the original 1 Ohm rating. This characteristic may be advantageous in applications requiring reduced impedance at operating frequencies. The part is active and RoHS3 compliant. Physical dimensions are equivalent with a maximum seated height of 2.11 mm, compared to 2.10 mm for the original. This 0.01 mm difference is within typical manufacturing tolerances for surface mount components.

For new designs and production transitions, either T494B226M016AT or TR3B226M016C0700 are suitable replacements. Selection between these alternatives depends on supply chain availability, cost considerations, and specific circuit performance requirements related to ESR characteristics.

Frequently Asked Questions (FAQ)

Q: Can the T494B226M016AT be used as a direct replacement for the T494B226M016AS?

A: Yes. The T494B226M016AT is electrically and mechanically equivalent to the T494B226M016AS. Both parts share identical capacitance (22 µF), voltage rating (16 V), tolerance (±20%), package format (1411 / 3528 Metric), and operating temperature range (-55°C to 125°C). The primary difference is product status: T494B226M016AT is active, while T494B226M016AS is obsolete. The T494B226M016AT also provides RoHS3 compliance.

Q: What is the significance of the ESR difference between T494B226M016AS (1 Ohm) and TR3B226M016C0700 (700 mOhm)?

A: ESR (Equivalent Series Resistance) affects impedance characteristics at operating frequencies. The TR3B226M016C0700 exhibits lower ESR at 700 mOhm compared to the original 1 Ohm specification. Lower ESR generally results in reduced voltage ripple and improved transient response in power supply applications. Circuit design parameters determine whether this difference is acceptable or beneficial for a specific application.

Q: Are the physical dimensions of TR3B226M016C0700 compatible with PCB layouts designed for T494B226M016AS?

A: Yes. Both parts use the 1411 (3528 Metric) package format with identical length (0.138" / 3.50 mm) and width (0.110" / 2.80 mm). The maximum seated height of TR3B226M016C0700 is 2.11 mm, compared to 2.10 mm for the original. This 0.01 mm difference is within standard manufacturing tolerances and does not affect PCB layout compatibility.

Q: What is the packaging difference between T494B226M016AS and T494B226M016AT?

A: T494B226M016AS is supplied in bulk packaging, while T494B226M016AT is supplied in Tape & Reel (TR) format. Tape & Reel packaging is standard for automated surface mount assembly processes. If manual assembly or bulk component handling is required, bulk packaging may be preferred; however, T494B226M016AT in Tape & Reel format is compatible with standard pick-and-place equipment.

Q: Are both substitute parts RoHS compliant?

A: Yes. Both T494B226M016AT and TR3B226M016C0700 are RoHS3 compliant. The original T494B226M016AS is RoHS non-compliant. For applications subject to RoHS regulations or customer requirements, either substitute part satisfies compliance requirements.

Q: Can these parts be used interchangeably in existing designs?

A: T494B226M016AT and TR3B226M016AS are fully interchangeable. TR3B226M016C0700 is interchangeable with the exception of ESR characteristics. Circuit designs that are sensitive to ESR performance should be evaluated before substituting TR3B226M016C0700. In most general-purpose applications, all three parts are interchangeable.