TARQ224K035 Equivalent & Substitute Parts

Part Overview

The TARQ224K035 is a 0.22 µF molded tantalum axial capacitor rated at 35 V with ±10% tolerance, manufactured by KYOCERA AVX. This component is classified as obsolete, making direct replacement necessary for new designs and ongoing production support. The part features a 17 Ohm equivalent series resistance (ESR) and operates across the temperature range of -55°C to 125°C. Equivalent and substitute parts are available from active manufacturers including Vishay Sprague and KEMET, offering functional compatibility with improved availability and compliance status.

Key Parameters

Parameter	Value
Capacitance	0.22 µF
Voltage Rating	35 V
Tolerance	±10%
Type	Molded Tantalum
Package / Case	Axial
Mounting Type	Through Hole
Operating Temperature Range	-55°C to 125°C
ESR (Equivalent Series Resistance)	17 Ohm
RoHS Status	RoHS non-compliant / ROHS3 Compliant (variant dependent)

Substitute Part Grouping Explanation

Substitution of the TARQ224K035 is determined by strict equivalence across the following parameters:

Capacitance: 0.22 µF (exact match required)
Voltage Rating: 35 V minimum (higher ratings acceptable as upgrades)
Tolerance: ±10% (tighter tolerances acceptable as upgrades)
Package / Case: Axial (mechanical and electrical compatibility)
Mounting Type: Through Hole (PCB assembly compatibility)
Operating Temperature Range: -55°C to 125°C (minimum requirement)
Type: Molded Tantalum (functional equivalence)

Direct substitutes maintain all parameters at specification. Upgrade substitutes offer improved tolerance (±5%) or higher voltage rating (50 V) while maintaining all other electrical and mechanical characteristics. Manufacturer-recommended parts provide enhanced compliance certifications (ROHS3) and active product status.

Parameter Comparison

Part Number	Manufacturer	Capacitance	Voltage	Tolerance	ESR	Package	Product Status	RoHS Status	Inventory
TARQ224K035	KYOCERA AVX	0.22 µF	35 V	±10%	17 Ohm	Axial	Obsolete	RoHS non-compliant	943 Pcs
173D224X9035U	Vishay Sprague	0.22 µF	35 V	±10%	—	Axial	Active	RoHS non-compliant	646 Pcs
173D224X9035UW	Vishay Sprague	0.22 µF	35 V	±10%	—	Axial	Active	RoHS non-compliant	1066 Pcs
T322A224K035AS	KEMET	0.22 µF	35 V	±10%	17 Ohm	Axial	Active	RoHS non-compliant	908 Pcs
173D224X5035UW	Vishay Sprague	0.22 µF	35 V	±5%	—	Axial	Active	RoHS non-compliant	1124 Pcs
173D224X9050UW	Vishay Sprague	0.22 µF	50 V	±10%	—	Axial	Active	RoHS non-compliant	633 Pcs
T322A224K050AS	KEMET	0.22 µF	50 V	±10%	17 Ohm	Axial	Active	RoHS non-compliant	894 Pcs
173D224X9035UE3	Vishay Sprague	0.22 µF	35 V	±10%	—	Axial	Active	ROHS3 Compliant	717 Pcs
173D224X9035UWE3	Vishay Sprague	0.22 µF	35 V	±10%	—	Axial	Active	ROHS3 Compliant	1099 Pcs
T322A224K035AT	KEMET	0.22 µF	35 V	±10%	17 Ohm	Axial	Active	ROHS3 Compliant	974 Pcs

Engineering Selection Recommendations

Direct Equivalents (Specification Match)

The 173D224X9035UW, 173D224X9035U, and T322A224K035AS provide direct functional equivalence to the TARQ224K035. All three maintain 0.22 µF capacitance, 35 V voltage rating, ±10% tolerance, and axial through-hole package configuration. The T322A224K035AS offers matching 17 Ohm ESR specification. These parts are suitable for one-to-one replacement in existing designs.

Manufacturer-Recommended Equivalents (Enhanced Compliance)

The 173D224X9035UE3, 173D224X9035UWE3, and T322A224K035AT are manufacturer-recommended alternatives offering ROHS3 compliance status while maintaining all electrical and mechanical specifications of the original part. These parts are preferred for new designs and applications requiring enhanced regulatory compliance. The T322A224K035AT additionally matches the 17 Ohm ESR characteristic.

Upgrade Options

The 173D224X5035UW provides tighter ±5% tolerance at the same 35 V rating, suitable for applications requiring improved capacitance accuracy. The 173D224X9050UW and T322A224K050AS offer 50 V voltage rating while maintaining 0.22 µF capacitance and ±10% tolerance, providing enhanced voltage margin for circuits operating near the 35 V specification limit.

Packaging Considerations

Vishay Sprague parts are available in Tape & Reel (TR) and Tape & Box (TB) packaging formats. KEMET parts are supplied in Bulk packaging. Selection should align with procurement and assembly requirements.

Frequently Asked Questions (FAQ)

Q: Can I use a 50 V rated capacitor in place of the 35 V TARQ224K035?

A: Yes. The 173D224X9050UW and T322A224K050AS are rated for 50 V and maintain all other electrical specifications. Higher voltage ratings provide additional safety margin and are electrically compatible with 35 V circuit requirements.

Q: What is the difference between the 173D224X9035UW and 173D224X9035UE3?

A: Both parts are electrically identical with 0.22 µF, 35 V, ±10% specifications. The primary difference is RoHS compliance status: 173D224X9035UW is RoHS non-compliant, while 173D224X9035UE3 is ROHS3 compliant. The UE3 variant is recommended for new designs and applications with regulatory compliance requirements.

Q: Does the ESR specification affect substitution compatibility?

A: ESR is a performance characteristic that affects circuit behavior but does not prevent substitution. The TARQ224K035 and T322A224K035AS both specify 17 Ohm ESR. Vishay Sprague parts do not publish ESR values in the provided data. For applications where ESR is critical, the KEMET T322 series parts provide matching specifications.

Q: Are the physical dimensions compatible between all substitute parts?

A: The TARQ224K035 measures 0.085" diameter × 0.250" length. Substitute parts from Vishay Sprague and KEMET measure 0.095" diameter × 0.260" length. While slightly larger, these dimensions remain within standard axial capacitor form factors and are compatible with through-hole PCB assembly processes.

Q: Which substitute part should I select for new production?

A: For new designs, the 173D224X9035UWE3 or T322A224K035AT are recommended. Both offer ROHS3 compliance, active product status, and high inventory availability. The choice between Vishay Sprague and KEMET depends on existing supply chain relationships and packaging requirements (Tape & Reel versus Bulk).

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