KEMET T520V337M006ASE025 Equivalent & Substitute Parts

Part Overview

The KEMET T520V337M006ASE025 is a 330 µF molded tantalum polymer capacitor rated at 6.3 V with 25 mOhm equivalent series resistance at 100 kHz, housed in a 2917 (7343 Metric) surface mount package. This part operates across a temperature range of -55°C to 105°C with a 2000-hour lifetime rating at 105°C and is RoHS3 compliant.

The T520V337M006ASE025 carries an obsolete product status. Equivalent and substitute parts from the active KO-CAP® T520 series are available to support ongoing design requirements and procurement needs. Substitute selection is determined by matching capacitance, voltage rating, package dimensions, and ESR specifications within allowable tolerances.

Key Parameters

Parameter	Value
Capacitance	330 µF
Voltage Rating	6.3 V
ESR @ 100 kHz	25 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

Substitution of the obsolete T520V337M006ASE025 is based on strict electrical and mechanical parameter matching within the KO-CAP® T520 series. The following criteria determine substitute eligibility:

Primary Matching Criteria:

Capacitance: 330 µF (fixed)
Voltage Rating: 6.3 V (fixed)
Package / Case: 2917 (7343 Metric) (fixed)
Mounting Type: Surface Mount (fixed)
Operating Temperature Range: -55°C to 105°C (fixed)
Lifetime @ 105°C: 2000 Hours (fixed)
Type: Molded Tantalum Polymer (fixed)
Tolerance: ±20% (fixed)

Variable Parameters Affecting Substitution:

ESR @ 100 kHz: 15 mOhm to 45 mOhm (acceptable range)
Manufacturer Size Code: V or D (affects seated height)
Packaging Format: Cut Tape (CT) & Digi-Reel® or Tape & Reel (TR)
Product Status: Active (preferred over obsolete)

Substitute parts are grouped into two categories: Direct Equivalents (matching ESR and size code) and Similar Equivalents (matching all electrical parameters with variations in ESR or physical height).

Parameter Comparison

Part Number	Manufacturer	Capacitance	Voltage	ESR @ 100 kHz	Size Code	Height (Max)	Product Status	Packaging	Inventory
T520V337M006ASE025	KEMET	330 µF	6.3 V	25 mOhm	V	0.075" (1.90 mm)	Obsolete	Bulk	781 Pcs
T520V337M006ATE025	KEMET	330 µF	6.3 V	25 mOhm	V	0.075" (1.90 mm)	Active	CT & Digi-Reel®	18850 Pcs
T520V337M006ATE018	KEMET	330 µF	6.3 V	18 mOhm	V	0.075" (1.90 mm)	Active	TR	4656 Pcs
T520V337M006ATE040	KEMET	330 µF	6.3 V	40 mOhm	V	0.075" (1.90 mm)	Active	TR	1400 Pcs
T520D337M006ATE015	KEMET	330 µF	6.3 V	15 mOhm	D	0.122" (3.10 mm)	Active	CT & Digi-Reel®	1264 Pcs
T520D337M006ATE018	KEMET	330 µF	6.3 V	18 mOhm	D	0.122" (3.10 mm)	Active	TR	1508 Pcs
T520D337M006ATE025	KEMET	330 µF	6.3 V	25 mOhm	D	0.122" (3.10 mm)	Active	CT & Digi-Reel®	1961 Pcs
T520D337M006ATE040	KEMET	330 µF	6.3 V	40 mOhm	D	0.122" (3.10 mm)	Active	TR	2388 Pcs
T520D337M006ATE045	KEMET	330 µF	6.3 V	45 mOhm	D	0.122" (3.10 mm)	Active	TR	2144 Pcs
T520V337M006ATE0254539	KEMET	330 µF	6.3 V	25 mOhm	V	0.075" (1.90 mm)	Active	TR	866 Pcs
T520V337M006ATE0257111	KEMET	330 µF	6.3 V	25 mOhm	V	0.075" (1.90 mm)	Active	TR	965 Pcs

Engineering Selection Recommendations

Direct Equivalent (Highest Compatibility):

T520V337M006ATE025 is the primary direct equivalent. This part maintains identical electrical specifications (330 µF, 6.3 V, 25 mOhm ESR) and physical dimensions (Size Code V, 0.075" seated height) as the obsolete T520V337M006ASE025. The part carries active product status and is available in Cut Tape & Digi-Reel® packaging with 18,850 units in stock. RoHS3 compliance and MSL 3 rating are maintained.

Alternative Equivalents (Size Code V, Compact Profile):

Parts T520V337M006ATE018 and T520V337M006ATE040 maintain the compact Size Code V profile (0.075" seated height) with identical capacitance and voltage ratings. These parts differ only in ESR specification: 18 mOhm and 40 mOhm respectively, compared to the original 25 mOhm. Selection depends on circuit requirements for impedance characteristics. Both carry active status and RoHS3 compliance.

Alternative Equivalents (Size Code D, Extended Height):

Parts with Size Code D designation (T520D337M006ATE015, T520D337M006ATE018, T520D337M006ATE025, T520D337M006ATE040, T520D337M006ATE045) provide identical electrical performance with increased seated height of 0.122" (3.10 mm) versus 0.075" (1.90 mm). These parts are suitable for applications where vertical space constraints are not critical. ESR options range from 15 mOhm to 45 mOhm.

Parametric Equivalents:

T520V337M006ATE0254539 and T520V337M006ATE0257111 are parametric equivalents matching all electrical and physical specifications of the original part. These parts carry active status with Tape & Reel packaging and represent alternative sourcing options.

All substitute parts maintain RoHS3 compliance, MSL 3 rating, and 2000-hour lifetime at 105°C. Product status is active for all listed substitutes, eliminating obsolescence risk.

Frequently Asked Questions (FAQ)

Q: Can T520V337M006ATE025 be used as a direct replacement for T520V337M006ASE025?

A: Yes. T520V337M006ATE025 is a direct equivalent with identical electrical specifications (330 µF, 6.3 V, 25 mOhm ESR) and physical dimensions (2917 package, 0.075" seated height). The primary difference is product status (active versus obsolete) and packaging format (Cut Tape & Digi-Reel® versus bulk).

Q: What is the difference between Size Code V and Size Code D?

A: Size Code V and Size Code D refer to different physical heights while maintaining the same 2917 (7343 Metric) footprint. Size Code V has a maximum seated height of 0.075" (1.90 mm), while Size Code D has a maximum seated height of 0.122" (3.10 mm). Selection depends on available vertical clearance in the application.

Q: Can I substitute a part with different ESR (e.g., 18 mOhm instead of 25 mOhm)?

A: ESR variation is acceptable within the KO-CAP® T520 series for 330 µF 6.3 V capacitors. Lower ESR values (15 mOhm, 18 mOhm) reduce impedance and heat generation. Higher ESR values (40 mOhm, 45 mOhm) increase impedance. Selection depends on circuit impedance requirements and thermal management considerations. All listed ESR options (15 mOhm to 45 mOhm) are electrically compatible with the original 25 mOhm specification.

Q: What packaging options are available?

A: Substitute parts are available in two packaging formats: Cut Tape (CT) & Digi-Reel® and Tape & Reel (TR). Cut Tape & Digi-Reel® packaging is suitable for lower-volume applications and manual assembly. Tape & Reel packaging is optimized for automated pick-and-place assembly. Packaging selection does not affect electrical or mechanical performance.

Q: Are all substitute parts RoHS3 compliant?

A: Yes. All listed substitute parts carry RoHS3 compliance certification, matching the compliance status of the original T520V337M006ASE025.

Q: What is the MSL rating and why is it important?

A: All parts carry MSL 3 (Moisture Sensitivity Level 3) with a 168-hour floor life rating. This indicates the maximum time the component can be exposed to ambient conditions (typically 30°C / 85% RH) after packaging before soldering. MSL 3 components require controlled storage and handling to prevent moisture absorption, which can cause delamination during reflow soldering.

Q: Can I mix different substitute parts in the same production run?

A: Yes, provided the circuit design accommodates the ESR and height variations. If ESR-sensitive circuits require consistent impedance characteristics, parts should be selected from a single ESR specification. If vertical clearance is critical, parts should be selected from a single Size Code (V or D).

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