TARS225K035 Equivalent & Substitute Parts

Part Overview

The TARS225K035 is a 2.2 µF molded tantalum capacitor rated at 35 V with ±10% tolerance, manufactured by KYOCERA AVX in axial through-hole configuration. This component is classified as obsolete, making equivalent substitutes necessary for ongoing production and maintenance applications. Direct replacements from active manufacturers ensure design continuity while maintaining electrical performance specifications.

Key Parameters

Parameter	Value
Capacitance	2.2 µF
Tolerance	±10%
Voltage Rating	35 V
Type	Molded Tantalum
Mounting Type	Through Hole
Package	Axial
Operating Temperature Range	-55°C to 125°C
ESR	5 Ohm
Size	0.169" Dia × 0.339" L (4.30 mm × 8.60 mm)

Substitute Part Grouping Explanation

Substitution for the TARS225K035 is determined by strict equivalence across the following parameters:

Capacitance: 2.2 µF (exact match required)
Voltage Rating: 35 V minimum (higher ratings acceptable as upgrades)
Tolerance: ±10% (tighter tolerances acceptable)
Type: Molded tantalum axial
Mounting: Through hole
Operating Temperature: -55°C to 125°C (minimum requirement)

Direct equivalents maintain all specifications at 35 V. Upgrade options provide higher voltage ratings (50 V) with improved tolerance (±5%), suitable for applications requiring enhanced reliability margins.

Parameter Comparison

Part Number	Manufacturer	Capacitance	Tolerance	Voltage	ESR	Size (Dia × L)	Product Status	RoHS Status	Packaging
TARS225K035	KYOCERA AVX	2.2 µF	±10%	35 V	5 Ohm	0.169" × 0.339" (4.30 × 8.60 mm)	Obsolete	Non-compliant	—
173D225X9035W	Vishay Sprague	2.2 µF	±10%	35 V	—	0.180" × 0.345" (4.57 × 8.76 mm)	Active	Non-compliant	Cut Tape
173D225X9035WW	Vishay Sprague	2.2 µF	±10%	35 V	—	0.180" × 0.345" (4.57 × 8.76 mm)	Active	Non-compliant	Tape & Reel
T322C225K035AS	KEMET	2.2 µF	±10%	35 V	5 Ohm	0.180" × 0.345" (4.57 × 8.76 mm)	Active	Non-compliant	Bulk
173D225X9035WE3	Vishay Sprague	2.2 µF	±10%	35 V	—	0.180" × 0.345" (4.57 × 8.76 mm)	Active	ROHS3 Compliant	Cut Tape
173D225X9035WWE3	Vishay Sprague	2.2 µF	±10%	35 V	—	0.180" × 0.345" (4.57 × 8.76 mm)	Active	ROHS3 Compliant	Tape & Reel
T322C225K035AT	KEMET	2.2 µF	±10%	35 V	5 Ohm	0.180" × 0.345" (4.57 × 8.76 mm)	Active	ROHS3 Compliant	Bulk
173D225X5050W	Vishay Sprague	2.2 µF	±5%	50 V	—	0.180" × 0.345" (4.57 × 8.76 mm)	Active	Non-compliant	Tape & Reel
173D225X9050WW	Vishay Sprague	2.2 µF	±10%	50 V	—	0.180" × 0.345" (4.57 × 8.76 mm)	Active	Non-compliant	Tape & Reel
T322C225K050AS	KEMET	2.2 µF	±10%	50 V	4.6 Ohm	0.180" × 0.345" (4.57 × 8.76 mm)	Active	Non-compliant	Bulk

Engineering Selection Recommendations

Direct Equivalents (35 V, ±10%)

For applications requiring exact specification matching, the following active parts provide direct replacement:

173D225X9035WE3 (Vishay Sprague, Cut Tape): ROHS3 compliant, recommended for new designs
173D225X9035WWE3 (Vishay Sprague, Tape & Reel): ROHS3 compliant, suitable for high-volume production
T322C225K035AT (KEMET, Bulk): ROHS3 compliant, alternative source
173D225X9035W (Vishay Sprague, Cut Tape): Active status, non-compliant
173D225X9035WW (Vishay Sprague, Tape & Reel): Active status, non-compliant
T322C225K035AS (KEMET, Bulk): Active status, non-compliant

Upgrade Options (50 V)

For applications where voltage margin enhancement is acceptable:

173D225X5050W (Vishay Sprague): 50 V, ±5% tolerance, improved specification
173D225X9050WW (Vishay Sprague): 50 V, ±10% tolerance
T322C225K050AS (KEMET): 50 V, ±10% tolerance, 4.6 Ohm ESR

Selection between ROHS3 compliant and non-compliant variants depends on regulatory requirements for the end application. Packaging format (Cut Tape, Tape & Reel, or Bulk) should align with procurement and assembly processes.

Frequently Asked Questions (FAQ)

Q: Can I use a 50 V rated capacitor in place of the 35 V TARS225K035?

A: Yes. Higher voltage ratings are electrically compatible and provide improved reliability margins. The 50 V upgrade options (173D225X5050W, 173D225X9050WW, T322C225K050AS) maintain identical capacitance and tolerance specifications while offering enhanced voltage headroom.

Q: What is the difference between the Vishay 173D and KEMET T322 series?

A: Both are molded tantalum axial capacitors meeting the same electrical specifications. The primary differences are manufacturer source and packaging format. KEMET T322 parts are available in bulk packaging, while Vishay 173D parts offer Cut Tape and Tape & Reel options. ESR specifications are provided for KEMET parts; Vishay ESR data is not specified in the available documentation.

Q: Are there physical size differences between the TARS225K035 and its substitutes?

A: Yes. The original TARS225K035 measures 0.169" diameter × 0.339" length (4.30 × 8.60 mm). All substitute parts measure 0.180" diameter × 0.345" length (4.57 × 8.76 mm). These dimensional differences are within typical axial capacitor tolerance ranges and should not affect PCB layout for standard through-hole applications.

Q: Which substitute should I select for new product designs?

A: For new designs, select ROHS3 compliant variants: 173D225X9035WE3, 173D225X9035WWE3, or T322C225K035AT. These ensure regulatory compliance and long-term availability from active manufacturers.

Q: What packaging format should I specify for production?

A: Packaging selection depends on assembly volume and process: Cut Tape (173D225X9035WE3) for lower volumes, Tape & Reel (173D225X9035WWE3) for automated assembly, or Bulk (T322C225K035AT) for manual assembly or kit builds.

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

A: Yes. All listed direct equivalents meet identical electrical specifications and are mechanically compatible. Cross-sourcing from Vishay Sprague and KEMET provides supply chain redundancy.

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