TARQ225M015 Equivalent & Substitute Parts

Part Overview

The TARQ225M015 is a 2.2 µF molded tantalum axial capacitor rated at 15 V with ±20% tolerance, manufactured by KYOCERA AVX. This component is classified as obsolete, making equivalent substitutes necessary for ongoing production and maintenance applications. The part features 8Ohm ESR and operates across the -55°C to 125°C temperature range, suitable for general-purpose filtering and energy storage in through-hole circuit designs.

Substiute Parts

TARQ225M015

KYOCERA AVXIn Stock: 1134TARQ225M015 Datasheet

Current PartRFQ

173D225X0015U

Vishay SpragueIn Stock: 1156173D225X0015U Datasheet

DirectRFQ

173D225X0015UW

Vishay SpragueIn Stock: 1055173D225X0015UW Datasheet

DirectRFQ

173D225X5020U

Vishay SpragueIn Stock: 892173D225X5020U Datasheet

UpgradeRFQ

173D225X9015UW

Vishay SpragueIn Stock: 1119173D225X9015UW Datasheet

UpgradeRFQ

T322A225K015AS

KEMETIn Stock: 1141T322A225K015AS Datasheet

UpgradeRFQ

173D225X0015UE3

Vishay SpragueIn Stock: 1074173D225X0015UE3 Datasheet

MFR RecommendedRFQ

173D225X0015UWE3

Vishay SpragueIn Stock: 736173D225X0015UWE3 Datasheet

MFR RecommendedRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution for TARQ225M015 is determined by the following critical parameters:

• Capacitance: Must be 2.2 µF (exact match required)
• Voltage Rating: Minimum 15 V (equal or higher acceptable)
• Tolerance: ±20% or tighter (±10%, ±5% acceptable as upgrades)
• Type: Molded tantalum axial configuration
• Mounting: Through-hole axial only
• Operating Temperature: -55°C to 125°C minimum range
• Package Compatibility: Axial lead spacing and dimensions must accommodate existing PCB layouts

Substitute parts are grouped into three categories:

Direct Equivalents maintain identical electrical specifications (2.2 µF, 15 V, ±20% tolerance) with different manufacturers or packaging options.

Upgrade Substitutes improve performance through tighter tolerance (±10% or ±5%) or higher voltage rating (20 V) while maintaining the same capacitance and temperature range.

Manufacturer-Recommended Alternatives include RoHS3-compliant variants that meet modern regulatory requirements while preserving core electrical characteristics.

Parameter Comparison

Engineering Selection Recommendations

For Direct Replacement (Non-Compliant Legacy Systems)

Use 173D225X0015U or 173D225X0015UW for immediate substitution. Both maintain identical electrical specifications (2.2 µF, 15 V, ±20%) and are actively manufactured by Vishay Sprague. Selection between these depends on packaging requirements: Tape & Box for standard procurement or Tape & Reel for automated assembly.

For Improved Performance

173D225X5020U provides upgraded specifications with ±5% tolerance and 20 V rating, offering better stability and higher voltage margin. 173D225X9015UW delivers ±10% tolerance at the original 15 V rating, balancing improved accuracy with cost considerations.

For RoHS3 Compliance

173D225X0015UE3 (Tape & Box) and 173D225X0015UWE3 (Tape & Reel) are manufacturer-recommended alternatives that maintain exact electrical equivalence while meeting RoHS3 regulatory requirements. These are suitable for new designs or compliance-driven applications.

For ESR-Critical Applications

T322A225K015AS (KEMET) matches the original 8 Ohm ESR specification while offering ±10% tolerance. This part is recommended when ESR performance is a design constraint.

Frequently Asked Questions (FAQ)

Q: Can I use a 20 V rated capacitor in place of the 15 V TARQ225M015?

A: Yes. The 173D225X5020U operates at 20 V, which exceeds the original 15 V requirement. Higher voltage ratings provide additional safety margin and are electrically compatible in circuits designed for 15 V operation.

Q: What is the difference between ±20%, ±10%, and ±5% tolerance ratings?

A: Tolerance indicates the allowable deviation from the nominal 2.2 µF capacitance value. ±20% allows 1.76–2.64 µF, ±10% allows 1.98–2.42 µF, and ±5% allows 2.09–2.31 µF. Tighter tolerances (±10%, ±5%) are suitable for precision filtering and timing circuits; ±20% is acceptable for general-purpose applications.

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

A: ESR affects ripple current handling and transient response. The original TARQ225M015 specifies 8 Ohm ESR. The T322A225K015AS maintains this specification. Vishay Sprague substitutes do not publish ESR values but are functionally equivalent for general-purpose applications.

Q: Are Tape & Box and Tape & Reel versions electrically identical?

A: Yes. The packaging difference (Tape & Box vs. Tape & Reel) affects only procurement and assembly methods. Electrically and mechanically, 173D225X0015U and 173D225X0015UW are identical. Choose based on your assembly process requirements.

Q: Why should I consider RoHS3-compliant versions?

A: RoHS3 compliance (173D225X0015UE3, 173D225X0015UWE3) ensures compatibility with modern supply chain requirements and regulatory standards. These are recommended for new designs or when future compliance is anticipated.

Q: Can I mix different substitute parts in the same circuit board?

A: Yes, provided all selected parts meet the circuit's electrical requirements (minimum 15 V rating, 2.2 µF capacitance). Mixing manufacturers or tolerance grades is acceptable in general-purpose applications where capacitance variation is tolerated by the design.

Q: What is the physical size difference between TARQ225M015 and its substitutes?

A: TARQ225M015 measures 0.085" diameter × 0.250" length. Vishay Sprague substitutes measure 0.095" diameter × 0.260" length. KEMET T322A225K015AS measures 0.095" diameter × 0.260" length. Verify PCB layout clearance before substitution, as the slightly larger diameter may affect board routing.