TARS225K050 Equivalent & Substitute Parts

Part Overview

The TARS225K050 is a 2.2 µF molded tantalum capacitor rated at 50 V with ±10% tolerance, manufactured by KYOCERA AVX in axial through-hole configuration. This part is classified as obsolete, making equivalent substitutes necessary for ongoing production and repair applications. Substitute parts must maintain identical electrical specifications (capacitance, voltage rating, tolerance) and compatible physical dimensions for direct board-level replacement.

Substiute Parts

TARS225K050

KYOCERA AVXIn Stock: 858TARS225K050 Datasheet

Current PartRFQ

173D225X9050W

Vishay SpragueIn Stock: 767173D225X9050W Datasheet

DirectRFQ

173D225X9050WW

Vishay SpragueIn Stock: 783173D225X9050WW Datasheet

DirectRFQ

T322C225K050AS

KEMETIn Stock: 1097T322C225K050AS Datasheet

DirectRFQ

173D225X5050W

Vishay SpragueIn Stock: 1136173D225X5050W Datasheet

UpgradeRFQ

173D225X9050WE3

Vishay SpragueIn Stock: 1249173D225X9050WE3 Datasheet

MFR RecommendedRFQ

173D225X9050WWE3

Vishay SpragueIn Stock: 903173D225X9050WWE3 Datasheet

MFR RecommendedRFQ

T322C225K050AT

KEMETIn Stock: 1128T322C225K050AT Datasheet

MFR RecommendedRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution for the TARS225K050 is determined by strict equivalence across the following parameters:

• Capacitance: Must be 2.2 µF (no tolerance variation)
• Voltage Rating: Must be 50 V (minimum acceptable rating)
• Tolerance: Must be ±10% or tighter (±5% is acceptable as an upgrade)
• Type: Must be molded tantalum
• Mounting: Must be through-hole axial configuration
• Operating Temperature: Must support -55°C to 125°C range
• Physical Compatibility: Axial package with similar lead spacing for PCB mounting

Direct substitutes maintain all electrical and mechanical specifications identical to the original part. Upgrade substitutes offer improved tolerance (±5% instead of ±10%) while maintaining all other parameters. Manufacturer-recommended substitutes include RoHS3 compliance certification, providing environmental regulatory advantage over the original non-compliant part.

Parameter Comparison

Engineering Selection Recommendations

Direct Electrical Equivalents (Active Status)

The 173D225X9050W, 173D225X9050WW, and T322C225K050AS are direct functional equivalents with identical electrical specifications. All three maintain 2.2 µF capacitance, 50 V rating, and ±10% tolerance. Selection among these should be based on packaging requirements and supply chain availability. The Vishay Sprague 173D series and KEMET T322C series are both established production lines with confirmed active status.

RoHS3 Compliant Alternatives (Recommended for New Designs)

The 173D225X9050WE3, 173D225X9050WWE3, and T322C225K050AT offer identical electrical performance with ROHS3 compliance certification. These parts are suitable for applications requiring environmental regulatory compliance. The primary difference is packaging format: Vishay offers Tape & Box (TB) and Tape & Reel (TR) options, while KEMET provides Bulk packaging.

Tolerance Upgrade Option

The 173D225X5050W provides ±5% tolerance instead of ±10%, representing improved accuracy while maintaining all other specifications. This upgrade is applicable where tighter capacitance tolerance is required without changing circuit board layout or electrical performance envelope.

Physical Dimension Consideration

Substitute parts exhibit slightly larger axial dimensions (0.180" Dia x 0.345" L versus 0.169" Dia x 0.339" L). Verify PCB layout clearance before implementation, particularly in space-constrained applications.

Frequently Asked Questions (FAQ)

Q: Can 173D225X9050W directly replace TARS225K050 on existing PCBs?

A: Yes, electrically and functionally. The 173D225X9050W maintains identical capacitance (2.2 µF), voltage rating (50 V), and tolerance (±10%). Physical dimensions are slightly larger (0.180" Dia x 0.345" L versus 0.169" Dia x 0.339" L), requiring verification of PCB clearance in the component mounting area.

Q: What is the difference between 173D225X9050W and 173D225X9050WW?

A: Both parts are electrically identical. The difference is packaging: 173D225X9050W is supplied in Cut Tape (CT), while 173D225X9050WW is supplied in Tape & Reel (TR). Selection depends on assembly process requirements and order quantity.

Q: Should I use the RoHS3 compliant versions (173D225X9050WE3 or T322C225K050AT)?

A: RoHS3 compliance is advantageous for new designs and applications subject to environmental regulations. For legacy system repairs where the original part was non-compliant, either compliant or non-compliant substitutes are functionally equivalent. Compliance status does not affect electrical performance.

Q: Is the ±5% tolerance version (173D225X5050W) a suitable replacement?

A: Yes. The ±5% tolerance is tighter than the original ±10%, providing improved accuracy. This upgrade is compatible with all circuit applications designed for the original part and introduces no compatibility issues.

Q: What is the significance of ESR (Equivalent Series Resistance)?

A: ESR affects high-frequency performance and ripple current handling. The TARS225K050 and KEMET T322C series specify 4.6 Ohm ESR. Vishay 173D series parts do not publish ESR values in the provided data. For applications sensitive to ESR characteristics, the KEMET T322C series provides explicit specification matching.

Q: Can I mix different manufacturers in the same assembly?

A: Yes. All listed substitutes meet identical electrical specifications and are suitable for mixed-manufacturer implementation. Ensure procurement and quality documentation reflect the specific manufacturer part number used.