T520V337M2R5ATE040 Equivalent & Substitute Parts

Part Overview

The T520V337M2R5ATE040 is a 330 µF molded tantalum polymer capacitor manufactured by KEMET in the KO-CAP® T520 series. This surface mount component operates at 2.5 V rated voltage with 40 mOhm equivalent series resistance (ESR) at 100 kHz, housed in a 2917 (7343 Metric) package. The part maintains active product status and is ROHS3 compliant with REACH unaffected classification. Equivalent and substitute parts are identified to address inventory availability, performance optimization, voltage margin requirements, or ESR specifications for specific circuit applications.

Substiute Parts

T520V337M2R5ATE040

KEMETIn Stock: 987T520V337M2R5ATE040 Datasheet

Current PartRFQ

T520W337M2R5ATE040

KEMETIn Stock: 2270T520W337M2R5ATE040 Datasheet

DirectRFQ

T520V337M004ATE040

KEMETIn Stock: 1893T520V337M004ATE040 Datasheet

UpgradeRFQ

T520V337M006ATE040

KEMETIn Stock: 1485T520V337M006ATE040 Datasheet

UpgradeRFQ

T522V337M006ATE040

KEMETIn Stock: 2980T522V337M006ATE040 Datasheet

UpgradeRFQ

T520V337M2R5ATE007

KEMETIn Stock: 2311T520V337M2R5ATE007 Datasheet

SimilarRFQ

T520V337M2R5ATE009

KEMETIn Stock: 1694T520V337M2R5ATE009 Datasheet

SimilarRFQ

T520V337M2R5ATE015

KEMETIn Stock: 2355T520V337M2R5ATE015 Datasheet

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T520V337M2R5ATE025

KEMETIn Stock: 19469T520V337M2R5ATE025 Datasheet

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T528Z337M2R5ATE008

KEMETIn Stock: 9803T528Z337M2R5ATE008 Datasheet

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Key Parameters

Substitute Part Grouping Explanation

Substitute parts for the T520V337M2R5ATE040 are categorized based on the following substitution criteria:

Direct Equivalent (Same Electrical & Mechanical Specifications): Parts maintaining identical capacitance (330 µF), voltage rating (2.5 V), ESR (40 mOhm @ 100 kHz), package (2917), and operating temperature range (-55°C to 105°C) are classified as direct equivalents. Variations in packaging format (Tape & Reel vs. Cut Tape) or manufacturer size code do not affect electrical performance.

Voltage Upgrade Substitutes (Higher Rated Voltage): Parts with identical capacitance, ESR, package, and temperature range but elevated voltage ratings (4 V or 6.3 V) function as direct substitutes in circuits operating below their rated voltage. These provide additional voltage margin and are electrically compatible with the original specification.

ESR Variants (Lower Equivalent Series Resistance): Parts maintaining 330 µF capacitance, 2.5 V rating, 2917 package, and temperature range but with reduced ESR values (7 mOhm, 8 mOhm, 9 mOhm, 15 mOhm, or 25 mOhm) are suitable for applications requiring improved high-frequency performance or reduced thermal dissipation.

Series Variants (Different KO-CAP® Series): Parts from alternative KEMET KO-CAP® series (T522, T528) with matching capacitance, voltage, ESR, package, and temperature specifications are compatible substitutes. Series designation reflects manufacturing process improvements while maintaining electrical equivalence.

Parameter Comparison

Engineering Selection Recommendations

Direct Equivalent Selection: T520W337M2R5ATE040 provides identical electrical performance with reduced seated height (1.50 mm vs. 1.90 mm), enabling use in space-constrained applications. Both parts maintain ROHS3 compliance and identical moisture sensitivity classification.

Voltage Upgrade Path: T520V337M004ATE040 (4 V) and T520V337M006ATE040 (6.3 V) are suitable for circuits where the original 2.5 V specification provides insufficient margin. These upgrades maintain 40 mOhm ESR and identical package dimensions, ensuring mechanical compatibility while extending voltage headroom.

Series Variant Consideration: T522V337M006ATE040 from the T522 series offers 6.3 V rating with equivalent electrical characteristics. This alternative series maintains ROHS3 compliance and identical package specifications.

ESR Optimization: Parts with reduced ESR (T520V337M2R5ATE007 at 7 mOhm, T528Z337M2R5ATE008 at 8 mOhm, T520V337M2R5ATE009 at 9 mOhm) are selected for applications requiring lower impedance at 100 kHz. T528Z337M2R5ATE008 additionally provides reduced height (1.70 mm), combining ESR improvement with space efficiency.

Compliance Verification: All substitute parts maintain ROHS3 compliance, REACH unaffected status, and identical moisture sensitivity level (MSL 3, 168 Hours), ensuring regulatory and environmental compatibility with the original specification.

Frequently Asked Questions (FAQ)

Q: Can T520W337M2R5ATE040 replace T520V337M2R5ATE040 in all applications?

A: Yes. Both parts share identical electrical specifications (330 µF, 2.5 V, 40 mOhm ESR @ 100 kHz) and package dimensions (2917). The primary difference is seated height: T520W337M2R5ATE040 measures 1.50 mm versus 1.90 mm for the original. This makes T520W337M2R5ATE040 suitable for height-restricted PCB layouts while maintaining full electrical equivalence.

Q: What is the difference between ESR variants like T520V337M2R5ATE007 and T520V337M2R5ATE040?

A: Both maintain 330 µF capacitance and 2.5 V rating in the same 2917 package. The distinction is ESR at 100 kHz: T520V337M2R5ATE007 provides 7 mOhm versus 40 mOhm for the original. Lower ESR reduces impedance at high frequencies and decreases resistive heating. Selection depends on circuit requirements for ripple current handling and thermal performance.

Q: Are voltage upgrade parts (4 V and 6.3 V) direct substitutes?

A: Yes, for circuits operating at or below 2.5 V. T520V337M004ATE040 (4 V) and T520V337M006ATE040 (6.3 V) maintain identical capacitance, ESR, package, and temperature range. Higher voltage ratings provide additional safety margin but do not alter electrical performance in 2.5 V applications. Physical dimensions remain unchanged.

Q: What is the significance of the T522 series variant T522V337M006ATE040?

A: T522V337M006ATE040 represents an alternative manufacturing series from KEMET's KO-CAP® portfolio. It maintains identical electrical specifications (330 µF, 6.3 V, 40 mOhm ESR) and package (2917) as T520V337M006ATE040. Series designation reflects process improvements while preserving electrical equivalence and compliance certifications.

Q: How do packaging formats (Tape & Reel vs. Cut Tape) affect substitution?

A: Packaging format affects handling and assembly logistics but not electrical or mechanical performance. T520V337M2R5ATE009 and T520V337M2R5ATE025 are available in Cut Tape & Digi-Reel® format, while most alternatives use standard Tape & Reel. Both formats accommodate the same component specifications and PCB assembly processes.

Q: Can T528Z337M2R5ATE008 from the T528 series be used as a substitute?

A: Yes. T528Z337M2R5ATE008 maintains 330 µF, 2.5 V, and 2917 package specifications with improved ESR (8 mOhm @ 100 kHz) and reduced height (1.70 mm). The T528 series designation indicates an alternative manufacturing platform. All compliance certifications (ROHS3, REACH unaffected, MSL 3) remain equivalent.

Q: What factors determine ESR selection among the available variants?

A: ESR selection depends on circuit application requirements. Lower ESR values (7–25 mOhm) reduce impedance at 100 kHz, improving performance in high-frequency filtering and ripple current applications. Higher ESR (40 mOhm) is suitable for general-purpose applications. All variants maintain identical capacitance and voltage ratings, making ESR the primary differentiator for performance optimization.