T520V337M2R5ASE009 Equivalent & Substitute Parts

Part Overview

The T520V337M2R5ASE009 is a 330 µF molded tantalum polymer capacitor rated at 2.5 V with an equivalent series resistance (ESR) of 9 mOhm at 100 kHz, manufactured by KEMET in the KO-CAP® T520 series. This component is housed in a 2917 (7343 Metric) surface mount package and operates across a temperature range of -55°C to 105°C with a rated lifetime of 2000 hours at 105°C.

The T520V337M2R5ASE009 is currently listed as obsolete. Identifying equivalent and substitute parts is necessary to maintain design continuity, ensure component availability, and support ongoing production requirements. Substitute parts must maintain electrical compatibility while meeting the same mechanical and environmental specifications.

Key Parameters

Parameter	Value
Capacitance	330 µF
Voltage Rating	2.5 V
ESR @ 100 kHz	9 mOhm
Package / Case	2917 (7343 Metric)
Mounting Type	Surface Mount
Operating Temperature Range	-55°C to 105°C
Lifetime @ 105°C	2000 Hours
Type	Molded Tantalum Polymer
Tolerance	±20%
RoHS Status	ROHS3 Compliant
MSL Rating	3 (168 Hours)

Substitute Part Grouping Explanation

Substitute parts for the T520V337M2R5ASE009 are classified into three categories based on electrical and mechanical compatibility:

Direct Equivalent (Same Electrical Specifications): Parts maintaining identical capacitance (330 µF), voltage rating (2.5 V), and ESR (9 mOhm @ 100 kHz) specifications. These parts differ only in packaging format or product status.

Voltage Upgrade (Higher Rated Voltage): Parts with identical capacitance (330 µF) and ESR (9 mOhm @ 100 kHz) but rated at 4 V instead of 2.5 V. These parts are electrically compatible in applications where the original 2.5 V rating is not a limiting constraint and provide additional voltage margin.

ESR Variation (Different Equivalent Series Resistance): Parts with identical capacitance (330 µF) and voltage rating (2.5 V) but different ESR values ranging from 7 mOhm to 40 mOhm at 100 kHz. ESR selection depends on application-specific ripple current and thermal management requirements.

All substitute parts maintain the same 2917 (7343 Metric) package footprint, surface mount mounting type, operating temperature range (-55°C to 105°C), RoHS3 compliance, and MSL rating (3, 168 Hours).

Parameter Comparison

Part Number	Manufacturer	Series	Capacitance	Voltage	ESR @ 100 kHz	Package	Height (Max)	Product Status	Packaging Format
T520V337M2R5ASE009	KEMET	KO-CAP® T520	330 µF	2.5 V	9 mOhm	2917	0.075" (1.90 mm)	Obsolete	-
T520V337M2R5ATE009	KEMET	KO-CAP® T520	330 µF	2.5 V	9 mOhm	2917	0.075" (1.90 mm)	Active	Cut Tape (CT) & Digi-Reel®
T520V337M004ATE009	KEMET	KO-CAP® T520	330 µF	4 V	9 mOhm	2917	0.075" (1.90 mm)	Active	Tape & Reel (TR)
T528Z337M004ATE009	KEMET	KO-CAP® T528	330 µF	4 V	9 mOhm	2917	0.067" (1.70 mm)	Active	Tape & Reel (TR)
T520D337M2R5ATE007	KEMET	KO-CAP® T520	330 µF	2.5 V	7 mOhm	2917	0.122" (3.10 mm)	Active	Tape & Reel (TR)
T520V337M2R5ATE007	KEMET	KO-CAP® T520	330 µF	2.5 V	7 mOhm	2917	0.075" (1.90 mm)	Active	Tape & Reel (TR)
T520V337M2R5ATE015	KEMET	KO-CAP® T520	330 µF	2.5 V	15 mOhm	2917	0.075" (1.90 mm)	Active	Tape & Reel (TR)
T520V337M2R5ATE025	KEMET	KO-CAP® T520	330 µF	2.5 V	25 mOhm	2917	0.075" (1.90 mm)	Active	Cut Tape (CT) & Digi-Reel®
T520V337M2R5ATE040	KEMET	KO-CAP® T520	330 µF	2.5 V	40 mOhm	2917	0.075" (1.90 mm)	Active	Tape & Reel (TR)
T520W337M2R5ATE040	KEMET	KO-CAP® T520	330 µF	2.5 V	40 mOhm	2917	0.059" (1.50 mm)	Active	Tape & Reel (TR)
T528Z337M2R5ATE008	KEMET	KO-CAP® T528	330 µF	2.5 V	8 mOhm	2917	0.067" (1.70 mm)	Active	Tape & Reel (TR)

Engineering Selection Recommendations

Primary Recommendation: T520V337M2R5ATE009 is the direct equivalent replacement for the obsolete T520V337M2R5ASE009. Both parts maintain identical electrical specifications (330 µF, 2.5 V, 9 mOhm ESR) and mechanical dimensions. The T520V337M2R5ATE009 is currently in active production status with ROHS3 compliance and equivalent MSL rating. This part is available in Cut Tape (CT) & Digi-Reel® packaging format.

Secondary Recommendation for Voltage Margin: T520V337M004ATE009 and T528Z337M004ATE009 provide identical capacitance and ESR specifications with upgraded 4 V voltage rating. These parts are suitable for applications where additional voltage headroom is beneficial. Both are in active production status with ROHS3 compliance. The T528Z337M004ATE009 offers reduced height (0.067" vs. 0.075") compared to the T520V337M004ATE009.

ESR-Optimized Alternatives: Parts with modified ESR values (T520V337M2R5ATE007 at 7 mOhm, T520V337M2R5ATE015 at 15 mOhm, T520V337M2R5ATE025 at 25 mOhm, T520V337M2R5ATE040 at 40 mOhm) maintain the original 2.5 V rating and 330 µF capacitance. Selection among these variants depends on application-specific ripple current requirements and thermal constraints. All are in active production status with ROHS3 compliance.

Height-Constrained Applications: T528Z337M2R5ATE008 provides the lowest profile option at 0.067" (1.70 mm) maximum seated height while maintaining 330 µF, 2.5 V specifications with 8 mOhm ESR. This part belongs to the KO-CAP® T528 series and is in active production status.

All recommended substitutes maintain ROHS3 compliance, MSL rating 3 (168 Hours), and the same 2917 (7343 Metric) package footprint for PCB compatibility.

Frequently Asked Questions (FAQ)

Q: Can T520V337M2R5ATE009 be used as a direct replacement for T520V337M2R5ASE009?

A: Yes. T520V337M2R5ATE009 is the direct equivalent with identical electrical specifications (330 µF, 2.5 V, 9 mOhm ESR @ 100 kHz) and mechanical dimensions (2917 package, 0.075" maximum height). The primary difference is product status (active vs. obsolete) and packaging format (Cut Tape & Digi-Reel® vs. standard packaging).

Q: What is the difference between ESR variants, and how do I select the correct one?

A: ESR (Equivalent Series Resistance) affects ripple current handling and thermal performance. Lower ESR values (7 mOhm, 8 mOhm, 9 mOhm) dissipate less heat and handle higher ripple currents. Higher ESR values (15 mOhm, 25 mOhm, 40 mOhm) are suitable for lower ripple current applications. Selection depends on your circuit's ripple current specification and thermal management requirements.

Q: Can I use a 4 V rated part (T520V337M004ATE009) in place of the 2.5 V original?

A: Yes, provided your circuit design permits. A 4 V rated capacitor is electrically compatible in applications originally designed for 2.5 V operation. The higher voltage rating provides additional safety margin but does not alter capacitance or ESR characteristics. Verify that PCB layout and component placement accommodate the same 2917 package footprint.

Q: What is the difference between T520 and T528 series parts?

A: Both series use identical 2917 (7343 Metric) package footprints and maintain the same electrical specifications. The T528 series offers reduced maximum seated height (0.067" vs. 0.075" for T520V variants). T528 parts are suitable for space-constrained applications where height clearance is critical.

Q: Are all substitute parts RoHS3 compliant?

A: Yes. All substitute parts listed maintain ROHS3 compliance and REACH unaffected status, matching the environmental compliance profile of the original T520V337M2R5ASE009.

Q: What packaging formats are available, and does it affect compatibility?

A: Substitute parts are available in Cut Tape (CT) & Digi-Reel® or Tape & Reel (TR) formats. Packaging format affects procurement and handling but does not impact electrical or mechanical compatibility. Select based on your assembly process requirements and inventory management procedures.

Q: Does the manufacturer size code (V, W, D, Z) affect electrical performance?

A: Manufacturer size codes indicate physical package variants within the same footprint family. Code V represents standard height (0.075"), W represents reduced height (0.059"), D represents increased height (0.122"), and Z represents compact height (0.067"). Size code selection depends on PCB clearance requirements. Electrical specifications remain consistent across size codes for parts with identical capacitance, voltage, and ESR ratings.

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