TARS106K015 Equivalent & Substitute Parts

Part Overview

The TARS106K015 is a 10 µF molded tantalum axial capacitor rated at 15 V with ±10% tolerance, manufactured by KYOCERA AVX. This component is classified as obsolete, making equivalent and substitute parts necessary for ongoing design support and procurement. The part operates across the temperature range of -55°C to 125°C and features a 3.2 Ohm equivalent series resistance (ESR), suitable for general-purpose applications in through-hole circuit designs.

Key Parameters

Parameter	Value
Capacitance	10 µF
Tolerance	±10%
Voltage Rating	15 V
Type	Molded Tantalum
ESR	3.2 Ohm
Operating Temperature	-55°C to 125°C
Mounting Type	Through Hole
Package	Axial
Size	0.169" Dia × 0.339" L (4.30mm × 8.60mm)
RoHS Status	Non-compliant

Substitute Part Grouping Explanation

Substitution for the TARS106K015 is determined by the following critical parameters:

Capacitance: 10 µF (exact match required)
Voltage Rating: 15 V minimum (equal or higher voltage ratings are acceptable)
Tolerance: ±10% (equal or tighter tolerance acceptable)
Mounting Type: Through Hole Axial (physical compatibility)
Operating Temperature Range: -55°C to 125°C (must match or exceed)
Type: Molded Tantalum (material consistency)

Substitute parts are grouped into three categories:

Direct Equivalents maintain identical electrical specifications (10 µF, ±10%, 15 V) with compatible physical dimensions and are sourced from active manufacturers.

Upgrade Options provide higher voltage ratings (20 V or 25 V) or improved tolerance (±5%), offering enhanced performance margins while maintaining the same capacitance and temperature range.

Manufacturer-Recommended Alternatives are designated by the original manufacturer as preferred replacements, often featuring improved compliance certifications (ROHS3) or enhanced availability.

Parameter Comparison

Part Number	Manufacturer	Capacitance	Tolerance	Voltage	ESR	Size (Dia × L)	Status	RoHS
TARS106K015	KYOCERA AVX	10 µF	±10%	15 V	3.2 Ohm	0.169" × 0.339"	Obsolete	Non-compliant
173D106X9015W	Vishay Sprague	10 µF	±10%	15 V	—	0.180" × 0.345"	Active	Non-compliant
173D106X9015WW	Vishay Sprague	10 µF	±10%	15 V	—	0.180" × 0.345"	Active	Non-compliant
T322C106K015AS	KEMET	10 µF	±10%	15 V	3.2 Ohm	0.180" × 0.345"	Active	Non-compliant
173D106X5020W	Vishay Sprague	10 µF	±5%	20 V	—	0.180" × 0.345"	Active	Non-compliant
173D106X9020WW	Vishay Sprague	10 µF	±10%	20 V	—	0.180" × 0.345"	Active	Non-compliant
173D106X9025WW	Vishay Sprague	10 µF	±10%	25 V	—	0.180" × 0.345"	Active	Non-compliant
T322C106K020AS	KEMET	10 µF	±10%	20 V	2.9 Ohm	0.180" × 0.345"	Active	Non-compliant
173D106X9015WE3	Vishay Sprague	10 µF	±10%	15 V	—	0.180" × 0.345"	Active	ROHS3 Compliant
173D106X9015WWE3	Vishay Sprague	10 µF	±10%	15 V	—	0.180" × 0.345"	Active	ROHS3 Compliant
T322C106K015AT	KEMET	10 µF	±10%	15 V	3.2 Ohm	0.180" × 0.345"	Active	ROHS3 Compliant

Engineering Selection Recommendations

For Direct Replacement (Identical Specifications): Select 173D106X9015W, 173D106X9015WW, or T322C106K015AS. These parts maintain the original 10 µF, ±10%, 15 V specification. All three are sourced from active manufacturers with current production status, ensuring long-term availability. T322C106K015AS provides ESR specification matching (3.2 Ohm), identical to the original TARS106K015.

For Compliance-Enhanced Replacement: Select 173D106X9015WE3, 173D106X9015WWE3, or T322C106K015AT. These parts are ROHS3 compliant and maintain identical electrical specifications. They are recommended for new designs or applications requiring regulatory compliance. T322C106K015AT additionally specifies 3.2 Ohm ESR, matching the original component.

For Upgraded Performance: Select 173D106X5020W (±5% tolerance, 20 V rating) or 173D106X9020WW (±10% tolerance, 20 V rating) for applications requiring improved voltage margin or tighter tolerance. T322C106K020AS provides 20 V rating with reduced ESR (2.9 Ohm) for lower impedance applications. Select 173D106X9025WW for maximum voltage headroom at 25 V rating.

All substitute options operate across the -55°C to 125°C temperature range and maintain through-hole axial mounting compatibility. Physical dimensions vary slightly (0.180" Dia × 0.345" L vs. original 0.169" Dia × 0.339" L); verify PCB layout clearance before implementation.

Frequently Asked Questions (FAQ)

Q: Can I use a higher voltage-rated capacitor as a substitute? A: Yes. A 20 V or 25 V rated capacitor is electrically compatible with a 15 V circuit. Higher voltage ratings provide additional safety margin and do not degrade circuit performance. Physical dimensions must be verified for PCB fit.

Q: What is the difference between direct equivalents and upgrade options? A: Direct equivalents (173D106X9015W, 173D106X9015WW, T322C106K015AS) maintain the original 15 V rating and ±10% tolerance. Upgrade options provide either higher voltage ratings (20 V, 25 V) or tighter tolerance (±5%), offering enhanced performance margins for demanding applications.

Q: Are ROHS3-compliant parts (173D106X9015WE3, 173D106X9015WWE3, T322C106K015AT) direct replacements? A: Yes. ROHS3-compliant parts maintain identical electrical specifications (10 µF, ±10%, 15 V) and are recommended for new designs or applications requiring regulatory compliance. They are sourced from active manufacturers with guaranteed long-term availability.

Q: Does the slight size difference between the original and substitute parts affect compatibility? A: The original TARS106K015 measures 0.169" Dia × 0.339" L, while most substitutes measure 0.180" Dia × 0.345" L. Verify PCB layout and component spacing before implementation. The difference is minimal for most through-hole designs but may require clearance verification in space-constrained applications.

Q: Which substitute offers the lowest ESR? A: T322C106K020AS provides the lowest ESR at 2.9 Ohm (20 V rating). For 15 V equivalents, T322C106K015AS and the original TARS106K015 both specify 3.2 Ohm ESR. Vishay Sprague 173D series parts do not specify ESR in the provided data.

Q: What is the difference between packaging options (Tape & Reel vs. Bulk)? A: Tape & Reel (TR) packaging is standard for automated assembly and high-volume production. Bulk packaging is suitable for manual assembly or lower-volume applications. Electrical specifications remain identical; packaging choice depends on assembly process requirements.

Q: Can I substitute the obsolete TARS106K015 with an active-status part immediately? A: Yes. All recommended substitutes are active-status components from established manufacturers (Vishay Sprague, KEMET). Active status ensures current production, documented specifications, and long-term availability. Obsolete parts should be replaced proactively to avoid future supply chain disruption.

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