T494D337M010AS Equivalent & Substitute Parts

Part Overview

The T494D337M010AS is a 330 µF molded tantalum capacitor manufactured by KEMET, rated for 10 V operation in a 2917 (7343 Metric) surface mount package. This component is classified as obsolete, indicating that direct procurement from the original manufacturer is no longer available through standard distribution channels. Identifying equivalent and substitute parts is necessary to maintain design continuity, ensure production availability, and support ongoing system maintenance and repairs.

Key Parameters

Parameter	Value
Capacitance	330 µF
Voltage Rating	10 V
Tolerance	±20%
Package / Case	2917 (7343 Metric)
Type	Molded Tantalum
ESR (Equivalent Series Resistance)	150 mOhm
Operating Temperature Range	-55°C to 125°C
Mounting Type	Surface Mount
Lifetime @ 125°C	2000 Hours
Moisture Sensitivity Level (MSL)	1 (Unlimited)

Substitute Part Grouping Explanation

Substitution of the T494D337M010AS is determined by strict equivalence across the following critical parameters:

Primary Substitution Criteria:

Capacitance: 330 µF (exact match required)
Voltage Rating: 10 V (exact match required)
Package / Case: 2917 (7343 Metric) (exact match required)
Mounting Type: Surface Mount (exact match required)
ESR: 150 mOhm (exact match required)
Operating Temperature Range: -55°C to 125°C (exact match required)

Secondary Compatibility Parameters:

Tolerance: ±20% (primary specification) or ±10% (tighter tolerance acceptable)
Type: Molded Tantalum (primary) or Conformal Coated Tantalum (acceptable with MSL consideration)
Moisture Sensitivity Level: 1 (Unlimited) preferred; MSL 3 acceptable with process controls

Non-Substitutable Parameters:

Parts with ESR values other than 150 mOhm are classified as similar but not direct substitutes
Parts with different package dimensions or height specifications are not compatible

Substitute parts are organized into two categories: Direct Substitutes (identical electrical and mechanical specifications) and Similar Parts (compatible with noted parameter deviations).

Parameter Comparison

Part Number	Manufacturer	Capacitance	Voltage	Tolerance	Type	ESR	Package	Product Status	RoHS Status	MSL
T494D337M010AS	KEMET	330 µF	10 V	±20%	Molded	150 mOhm	2917	Obsolete	Non-compliant	1
T494D337K010AT	KEMET	330 µF	10 V	±10%	Molded	150 mOhm	2917	Active	RoHS3 Compliant	1
T494D337M010AH	KEMET	330 µF	10 V	±20%	Molded	150 mOhm	2917	Active	Non-compliant	1
T494D337M010AT	KEMET	330 µF	10 V	±20%	Molded	150 mOhm	2917	Active	RoHS3 Compliant	1
F751A337KDC	KYOCERA AVX	330 µF	10 V	±10%	Conformal Coated	150 mOhm	2917	Active	RoHS3 Compliant	3
F751A337MDC	KYOCERA AVX	330 µF	10 V	±20%	Conformal Coated	150 mOhm	2917	Active	RoHS3 Compliant	3
TPSD337K010R0150	KYOCERA AVX	330 µF	10 V	±10%	Molded	150 mOhm	2917	Active	RoHS3 Compliant	1
TPSD337M010H0150	KYOCERA AVX	330 µF	10 V	±20%	Molded	150 mOhm	2917	Active	Non-compliant	1
TPSD337M010R0150	KYOCERA AVX	330 µF	10 V	±20%	Molded	150 mOhm	2917	Active	RoHS3 Compliant	1
TR3D337M010C0150	Vishay Sprague	330 µF	10 V	±20%	Molded	150 mOhm	2917	Active	RoHS3 Compliant	1
TAJE337M010H	KYOCERA AVX	330 µF	10 V	±20%	Molded	900 mOhm	2917	Active	Non-compliant	1

Engineering Selection Recommendations

Direct Substitutes (Identical Electrical and Mechanical Specifications):

The following parts are direct substitutes for the T494D337M010AS and can be used interchangeably without circuit redesign:

T494D337M010AH (KEMET) – Active product status, same tolerance and ESR, non-compliant RoHS status
T494D337M010AT (KEMET) – Active product status, same tolerance and ESR, RoHS3 compliant
TPSD337M010H0150 (KYOCERA AVX) – Active product status, same tolerance and ESR, non-compliant RoHS status
TPSD337M010R0150 (KYOCERA AVX) – Active product status, same tolerance and ESR, RoHS3 compliant
TR3D337M010C0150 (Vishay Sprague) – Active product status, same tolerance and ESR, RoHS3 compliant

Acceptable Substitutes (Tighter Tolerance):

The following parts meet all electrical and mechanical requirements with improved tolerance specifications:

T494D337K010AT (KEMET) – ±10% tolerance (tighter than ±20%), RoHS3 compliant, active status
TPSD337K010R0150 (KYOCERA AVX) – ±10% tolerance (tighter than ±20%), RoHS3 compliant, active status

Conditional Substitutes (Type Variation):

The following parts are conformal coated variants with MSL 3 rating instead of MSL 1:

F751A337KDC (KYOCERA AVX) – ±10% tolerance, conformal coated type, MSL 3, RoHS3 compliant
F751A337MDC (KYOCERA AVX) – ±20% tolerance, conformal coated type, MSL 3, RoHS3 compliant

Conformal coated variants require moisture control procedures during storage and handling due to MSL 3 classification.

Non-Substitutable Parts:

TAJE337M010H (KYOCERA AVX) – ESR of 900 mOhm (not 150 mOhm); classified as similar but not equivalent

Compliance Considerations:

For applications requiring RoHS3 compliance, select from: T494D337M010AT, T494D337K010AT, TPSD337K010R0150, TPSD337M010R0150, TR3D337M010C0150, F751A337KDC, or F751A337MDC.

For applications with no RoHS requirement, all listed direct substitutes are available.

Frequently Asked Questions (FAQ)

Q1: Can I use T494D337K010AT as a substitute for T494D337M010AS?

A: Yes. T494D337K010AT is an acceptable substitute. It has identical capacitance (330 µF), voltage rating (10 V), package (2917), ESR (150 mOhm), and operating temperature range. The tolerance is ±10% instead of ±20%, which is tighter and therefore compatible. T494D337K010AT is active and RoHS3 compliant.

Q2: What is the difference between molded and conformal coated tantalum capacitors?

A: Both types meet the same electrical specifications for this application. Conformal coated variants (F751A337KDC and F751A337MDC) have a protective coating and are classified as MSL 3, requiring controlled moisture exposure during storage and handling. Molded variants are MSL 1 (unlimited moisture sensitivity). Selection depends on application environment and handling procedures.

Q3: Why is TAJE337M010H listed as similar but not a direct substitute?

A: TAJE337M010H has an ESR of 900 mOhm, whereas the T494D337M010AS has an ESR of 150 mOhm. This six-fold difference in series resistance affects circuit performance, filtering characteristics, and thermal behavior. This part is not electrically equivalent and cannot be used as a direct replacement.

Q4: Are all substitute parts available in the same packaging format?

A: All direct and acceptable substitutes are available in Tape & Reel (TR) packaging for automated assembly. The original T494D337M010AS packaging format is not specified in the provided data. Confirm packaging requirements with your procurement process.

Q5: Which substitute offers the best availability?

A: TPSD337M010R0150 (KYOCERA AVX) has the highest inventory level at 5,524 pieces in stock. TPSD337K010R0150 has 7,908 pieces available. Both are active products with RoHS3 compliance.

Q6: Can I mix different manufacturers' parts in the same assembly?

A: Yes. All listed direct substitutes meet identical electrical and mechanical specifications. Cross-manufacturer substitution is acceptable from an engineering standpoint. Verify with your quality and procurement procedures for any internal requirements regarding manufacturer qualification or traceability.

Q7: What does RoHS3 compliance mean for this component?

A: RoHS3 compliance indicates the part meets Restriction of Hazardous Substances Directive requirements, restricting lead, cadmium, mercury, and other hazardous materials. For applications subject to RoHS regulations, select only RoHS3 compliant parts: T494D337M010AT, T494D337K010AT, TPSD337K010R0150, TPSD337M010R0150, TR3D337M010C0150, F751A337KDC, or F751A337MDC.

Q8: What is MSL (Moisture Sensitivity Level) and why does it matter?

A: MSL indicates the maximum time a component can be exposed to moisture before soldering. MSL 1 (unlimited) parts have no time restriction. MSL 3 (168 hours) parts must be soldered within 168 hours of opening the package. Conformal coated variants (F751A337KDC, F751A337MDC) are MSL 3 and require moisture control procedures. Molded variants are MSL 1 and have no moisture handling restrictions.

Q9: Is the T494D337M010AS still manufactured?

A: No. The T494D337M010AS is classified as obsolete and is no longer manufactured by KEMET. Use one of the active substitute parts listed in this document for new designs or ongoing production.

Q10: Can I use a substitute with tighter tolerance (±10%) in place of the original (±20%)?

A: Yes. A tighter tolerance is always acceptable as a substitute. Parts with ±10% tolerance (T494D337K010AT, TPSD337K010R0150, F751A337KDC) will perform within the original ±20% specification window and provide improved capacitance accuracy.

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