Equivalent & Substitute Parts for T494X337K010AS

Part Overview

The T494X337K010AS is a 330 µF molded tantalum capacitor rated at 10 V with 100 mOhm equivalent series resistance (ESR), manufactured by KEMET in the 2917 (7343 Metric) package. This part is classified as obsolete, making identification of active equivalent and substitute components essential for ongoing design support and procurement.

Molded tantalum capacitors in this specification are used in general-purpose applications requiring stable capacitance, low ESR, and reliable performance across the -55°C to 125°C operating temperature range. The obsolete status of the T494X337K010AS necessitates evaluation of functionally equivalent alternatives from active product lines.

Substiute Parts

T494X337K010AS

KEMETIn Stock: 1810T494X337K010AS Datasheet

Current PartRFQ

T494X337K010AT

KEMETIn Stock: 1489T494X337K010AT Datasheet

DirectRFQ

T510X337K010AHE035

KEMETIn Stock: 1648T510X337K010AHE035 Datasheet

SimilarRFQ

TPSD337K010H0100

KYOCERA AVXIn Stock: 912TPSD337K010H0100 Datasheet

DirectRFQ

TAJE337K010H

KYOCERA AVXIn Stock: 933TAJE337K010H Datasheet

SimilarRFQ

TR3E337K010C0060

Vishay SpragueIn Stock: 1361TR3E337K010C0060 Datasheet

SimilarRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution of the T494X337K010AS is determined by strict equivalence in the following parameters:

Critical Parameters (Must Match):

• Capacitance: 330 µF
• Tolerance: ±10%
• Voltage - Rated: 10 V
• Package / Case: 2917 (7343 Metric)
• Mounting Type: Surface Mount
• Operating Temperature Range: -55°C to 125°C
• Moisture Sensitivity Level: 1 (Unlimited)

Allowable Variation Parameters:

• ESR (Equivalent Series Resistance): Substitutes may have lower ESR values, which represent improved performance characteristics
• Height - Seated (Max): Minor variations within package tolerance are acceptable
• Lifetime @ Temp.: Variations in rated lifetime do not preclude substitution if other parameters align
• RoHS Status: Compliance differences are noted but do not prevent functional substitution
• Product Status: Active substitutes are preferred over obsolete parts

The substitute parts identified below meet all critical parameters while demonstrating variations in ESR and compliance certifications.

Parameter Comparison

Engineering Selection Recommendations

Direct Equivalent (Identical ESR):

T494X337K010AT (KEMET) is the primary direct substitute for T494X337K010AS. Both parts share identical electrical specifications including 100 mOhm ESR, 330 µF capacitance, and 10 V rating. T494X337K010AT is active in production and available in Tape & Reel packaging. The primary distinction is RoHS3 compliance status of T494X337K010AT versus non-compliance of the obsolete T494X337K010AS. This part is suitable for direct replacement in all applications where the original part was specified.

Lower ESR Alternatives:

T510X337K010AHE035 (KEMET, 35 mOhm ESR) and TR3E337K010C0060 (Vishay Sprague, 60 mOhm ESR) provide improved ESR performance compared to the original 100 mOhm specification. These parts are electrically compatible and may be selected when lower ESR is beneficial for circuit performance. TR3E337K010C0060 offers the additional advantage of RoHS3 compliance. Both parts are active in production.

Higher ESR Alternative:

TAJE337K010H (KYOCERA AVX, 900 mOhm ESR) meets all critical electrical and mechanical parameters but exhibits significantly higher ESR. This part is suitable only for applications where ESR is not a limiting design factor.

Equivalent ESR from Alternative Manufacturer:

TPSD337K010H0100 (KYOCERA AVX, 100 mOhm ESR) provides identical ESR to the original part and is functionally equivalent. This part features a reduced seated height of 3.10 mm compared to 4.30 mm, which may be advantageous in space-constrained designs. TPSD337K010H0100 is active in production.

Compliance Considerations:

For applications requiring RoHS3 compliance, T494X337K010AT and TR3E337K010C0060 are the appropriate selections. Both parts are active and meet regulatory requirements.

Frequently Asked Questions (FAQ)

Q: Can T494X337K010AT be used as a direct replacement for T494X337K010AS?

A: Yes. T494X337K010AT is a direct electrical and mechanical equivalent with identical capacitance (330 µF), voltage rating (10 V), ESR (100 mOhm), package (2917), and operating temperature range (-55°C to 125°C). The primary difference is product status (active versus obsolete) and RoHS3 compliance. T494X337K010AT is the recommended substitute.

Q: What is the significance of ESR differences among the substitute parts?

A: ESR (Equivalent Series Resistance) affects circuit performance, particularly in high-frequency applications and ripple current handling. Lower ESR values (35 mOhm for T510X337K010AHE035, 60 mOhm for TR3E337K010C0060) represent improved performance. Higher ESR values (900 mOhm for TAJE337K010H) may limit suitability for applications sensitive to ESR. Selection depends on circuit requirements.

Q: Are all substitute parts available in the same package dimensions?

A: All substitute parts use the 2917 (7343 Metric) package with identical length (7.30 mm) and width (4.30 mm). Seated height varies slightly: TPSD337K010H0100 is 3.10 mm, while others are 4.30 mm or 4.32 mm. These variations are within package tolerance and do not affect PCB footprint compatibility.

Q: Which substitute part offers the best compliance profile?

A: TR3E337K010C0060 (Vishay Sprague) and T494X337K010AT (KEMET) both achieve RoHS3 compliance. TR3E337K010C0060 additionally provides improved ESR (60 mOhm) compared to the original specification.

Q: Can TAJE337K010H be used despite its higher ESR?

A: TAJE337K010H meets all critical electrical and mechanical parameters and is functionally compatible. However, its 900 mOhm ESR is significantly higher than the original 100 mOhm specification. Selection should be based on circuit tolerance to ESR variation. For applications where ESR is a design constraint, lower-ESR alternatives are preferred.

Q: What is the inventory status of these substitute parts?

A: All substitute parts are listed as active in production with available inventory: T494X337K010AT (1419 Pcs), T510X337K010AHE035 (1619 Pcs), TPSD337K010H0100 (845 Pcs), TAJE337K010H (832 Pcs), and TR3E337K010C0060 (1295 Pcs).

Q: Are there any height restrictions that would affect part selection?

A: TPSD337K010H0100 has a reduced seated height of 3.10 mm compared to 4.30 mm for most other parts. This may be advantageous in space-constrained applications. All parts are compatible with standard 2917 package footprints.