T322C225K035AS Equivalent & Substitute Parts

Part Overview

The T322C225K035AS is a 2.2 µF molded tantalum capacitor manufactured by KEMET, rated for 35 V operation in an axial through-hole package. This component is classified as Active product status and is designed for general-purpose applications requiring stable capacitance and low equivalent series resistance in compact form factors.

Substitute parts become necessary when the primary part number reaches end-of-life status, inventory constraints occur, or design requirements necessitate enhanced electrical performance or regulatory compliance upgrades. The substitute parts listed maintain functional equivalence through matching capacitance, voltage rating, tolerance, and physical dimensions while offering variations in ESR characteristics, packaging formats, and compliance certifications.

Substiute Parts

T322C225K035AS

KEMETIn Stock: 1032T322C225K035AS Datasheet

Current PartRFQ

T322C225K035AT

KEMETIn Stock: 1041T322C225K035AT Datasheet

DirectRFQ

T322C225K050AS

KEMETIn Stock: 1097T322C225K050AS Datasheet

UpgradeRFQ

173D225X9035W

Vishay SpragueIn Stock: 1270173D225X9035W Datasheet

DirectRFQ

173D225X9035WE3

Vishay SpragueIn Stock: 1367173D225X9035WE3 Datasheet

SimilarRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution logic for the T322C225K035AS is based on the following criteria:

Direct Electrical Equivalents maintain identical capacitance (2.2 µF), voltage rating (35 V), tolerance (±10%), and physical dimensions (0.180" Dia x 0.345" L). These parts are interchangeable at the circuit level with no design modifications required.

Voltage-Upgraded Equivalents maintain identical capacitance, tolerance, and physical dimensions while increasing the voltage rating to 50 V. These parts provide enhanced voltage margin and typically feature improved ESR characteristics. They are electrically compatible with circuits designed for 35 V operation.

Manufacturer Variants include cross-manufacturer substitutes from Vishay Sprague (TANTALEX™ 173D series) that match all critical electrical parameters and physical dimensions. These parts maintain the same axial through-hole package configuration and operating temperature range.

Compliance Variants distinguish between RoHS non-compliant and RoHS3-compliant versions. Selection depends on regulatory requirements and end-application standards.

The following parameters are held constant across all substitute relationships:

• Capacitance: 2.2 µF
• Tolerance: ±10%
• Minimum Voltage Rating: 35 V
• Package Type: Axial
• Physical Dimensions: 0.180" Dia x 0.345" L (4.57mm x 8.76mm)
• Mounting Type: Through Hole
• Operating Temperature: -55°C ~ 125°C

Parameter Comparison

Engineering Selection Recommendations

For Direct Replacement (Identical Specifications): Select T322C225K035AT when RoHS3 compliance is required. This part maintains all electrical characteristics of the primary part (T322C225K035AS) while meeting modern regulatory standards. Both KEMET parts are available in bulk packaging and share identical ESR, capacitance, voltage rating, and physical dimensions.

For Enhanced Performance: Select T322C225K050AS when circuit design permits higher voltage rating. This upgrade provides 50 V rating with reduced ESR (3.5 Ohm versus 5 Ohm), resulting in lower impedance and improved transient response. The physical dimensions remain identical, ensuring PCB compatibility. This part is suitable for applications requiring improved electrical performance margins.

For Cross-Manufacturer Substitution: Select 173D225X9035WE3 (Vishay Sprague TANTALEX™ series) when cross-manufacturer qualification is acceptable and RoHS3 compliance is required. This part matches all critical electrical parameters and physical dimensions. The Cut Tape packaging format differs from bulk packaging; verify procurement and assembly process compatibility.

Select 173D225X9035W (Vishay Sprague TANTALEX™ series) for cross-manufacturer substitution without RoHS3 compliance requirements. This part provides equivalent electrical performance to the primary part.

Compliance Considerations: Parts designated as RoHS3 Compliant (T322C225K035AT and 173D225X9035WE3) meet current regulatory requirements for restricted substances. Selection of compliant variants is mandatory for applications subject to RoHS Directive 2011/65/EU and amendments.

Packaging Format Considerations: KEMET parts are supplied in Bulk packaging; Vishay Sprague parts are supplied in Cut Tape (CT) format. Verify compatibility with receiving, storage, and assembly processes before selection.

Frequently Asked Questions (FAQ)

Q: Can T322C225K035AT be used as a direct replacement for T322C225K035AS?

A: Yes. Both parts are KEMET T322 series components with identical capacitance (2.2 µF), voltage rating (35 V), tolerance (±10%), ESR (5 Ohm), and physical dimensions (0.180" Dia x 0.345" L). The primary difference is RoHS3 compliance status. T322C225K035AT is suitable for applications requiring regulatory compliance.

Q: What is the advantage of using T322C225K050AS over T322C225K035AS?

A: T322C225K050AS provides a higher voltage rating (50 V versus 35 V) and lower ESR (3.5 Ohm versus 5 Ohm). The increased voltage rating provides additional safety margin in circuits operating near the 35 V limit. The reduced ESR improves transient response and reduces heat generation. Physical dimensions remain identical for PCB compatibility.

Q: Are Vishay Sprague 173D series parts mechanically compatible with KEMET T322 series?

A: Yes. Both 173D225X9035W and 173D225X9035WE3 share identical physical dimensions (0.180" Dia x 0.345" L) and axial through-hole package configuration with KEMET T322 parts. PCB layout and mechanical mounting are compatible. Packaging format differs (Cut Tape versus Bulk); verify assembly process compatibility.

Q: What does RoHS3 compliance mean for capacitor selection?

A: RoHS3 Compliant parts meet Directive 2011/65/EU and amendments, restricting hazardous substances including lead, cadmium, mercury, and specific flame retardants. Selection of RoHS3-compliant parts (T322C225K035AT or 173D225X9035WE3) is required for applications subject to European Union regulations or equivalent standards in other jurisdictions.

Q: Can I substitute a 35 V rated capacitor with a 50 V rated capacitor in my circuit?

A: Yes. A 50 V rated capacitor is electrically compatible with circuits designed for 35 V operation. The higher voltage rating provides additional safety margin and does not degrade circuit performance. Verify that physical dimensions match PCB layout requirements.

Q: What is the difference between Bulk and Cut Tape packaging?

A: Bulk packaging supplies components in loose form, typically for manual assembly or reel loading. Cut Tape (CT) packaging supplies components on adhesive tape in precise quantities, optimized for automated pick-and-place assembly. Selection depends on manufacturing process requirements and assembly equipment compatibility.

Q: Are all substitute parts available in equivalent inventory quantities?

A: Inventory availability varies by part number and supplier. Refer to current stock levels: T322C225K035AS (935 Pcs), T322C225K035AT (1013 Pcs), T322C225K050AS (1025 Pcs), 173D225X9035W (1260 Pcs), and 173D225X9035WE3 (1264 Pcs). Verify current availability with procurement before finalizing part selection.

Q: What operating temperature range applies to all substitute parts?

A: All substitute parts operate across the identical temperature range of -55°C to 125°C. This range is maintained across KEMET T322 series and Vishay Sprague TANTALEX™ 173D series variants, ensuring consistent thermal performance across all substitution options.