T495X687K006ATE045 Equivalent & Substitute Parts

Part Overview

The T495X687K006ATE045 is a 680 µF molded tantalum capacitor rated at 6.3 V with an ESR of 45 mOhm @ 100 kHz, manufactured by KEMET in the T495 series. This surface mount component is housed in a 2917 (7343 Metric) package and is designed for general purpose applications across an operating temperature range of -55°C to 125°C with a rated lifetime of 2000 hours at 125°C. The part is ROHS3 compliant and carries an active product status. Equivalent and substitute parts are identified when alternative components share identical or compatible electrical and mechanical specifications, enabling design flexibility, inventory optimization, or sourcing alternatives.

Key Parameters

Parameter	Value
Capacitance	680 µF
Tolerance	±10%
Voltage - Rated	6.3 V
Type	Molded Tantalum
Package / Case	2917 (7343 Metric)
Size / Dimension	0.287" L x 0.169" W (7.30 mm x 4.30 mm)
Height - Seated (Max)	0.169" (4.30 mm)
Mounting Type	Surface Mount
Operating Temperature	-55°C ~ 125°C
Lifetime @ Temp.	2000 Hrs @ 125°C
Moisture Sensitivity Level (MSL)	1 (Unlimited)

Substitute Part Grouping Explanation

Substitution of the T495X687K006ATE045 is determined by strict equivalence in the following parameters: capacitance value (680 µF), tolerance (±10%), rated voltage (6.3 V), package type (2917 / 7343 Metric), physical dimensions, mounting type (surface mount), operating temperature range (-55°C to 125°C), and lifetime rating (2000 Hrs @ 125°C). All identified substitute parts maintain these core electrical and mechanical specifications. Variations in ESR (Equivalent Series Resistance) and series designation (T491, T494, T510) reflect different internal construction and performance characteristics within KEMET's tantalum capacitor portfolio, but do not affect functional interchangeability for applications where the specified electrical parameters are met. Packaging format (Tape & Reel, Cut Tape, or bulk) and RoHS compliance status are secondary considerations that do not impact electrical performance.

Parameter Comparison

Part Number	Series	Capacitance	Tolerance	Voltage	Package	ESR @ 100 kHz	Operating Temp.	Lifetime @ 125°C	RoHS Status	Packaging Format
T495X687K006ATE045	T495	680 µF	±10%	6.3 V	2917 (7343)	45 mOhm	-55°C ~ 125°C	2000 Hrs	ROHS3 Compliant	Bulk
T491X687K006AH	T491	680 µF	±10%	6.3 V	2917 (7343)	600 mOhm	-55°C ~ 125°C	2000 Hrs	RoHS Non-compliant	Tape & Reel (TR)
T491X687K006AT	T491	680 µF	±10%	6.3 V	2917 (7343)	600 mOhm	-55°C ~ 125°C	2000 Hrs	ROHS3 Compliant	Cut Tape (CT) & Digi-Reel®
T494X687K006AT	T494	680 µF	±10%	6.3 V	2917 (7343)	100 mOhm	-55°C ~ 125°C	2000 Hrs	ROHS3 Compliant	Tape & Reel (TR)
T510X687K006ATE023	T510	680 µF	±10%	6.3 V	2917 (7343)	23 mOhm	-55°C ~ 125°C	2000 Hrs	ROHS3 Compliant	Tape & Reel (TR)

Engineering Selection Recommendations

All four substitute parts are electrically and mechanically compatible with the T495X687K006ATE045 based on matching capacitance, voltage rating, tolerance, package dimensions, and operating specifications.

T491X687K006AT is the preferred substitute when ROHS3 compliance is required and packaging format flexibility is acceptable. This part maintains full electrical equivalence with ROHS3 certification and is available in Cut Tape and Digi-Reel formats.

T494X687K006AT is suitable for applications where lower ESR (100 mOhm) is beneficial and ROHS3 compliance is required. This part offers improved high-frequency performance characteristics.

T510X687K006ATE023 is appropriate for applications requiring the lowest ESR specification (23 mOhm @ 100 kHz) with ROHS3 compliance. This series provides superior performance in noise-sensitive or high-frequency filtering applications.

T491X687K006AH is available as an alternative but carries RoHS non-compliant status and should be selected only when legacy design requirements or specific supply chain constraints necessitate this part.

Frequently Asked Questions (FAQ)

Q: Can T491X687K006AT be used as a direct replacement for T495X687K006ATE045?

A: Yes. Both parts share identical capacitance (680 µF), voltage rating (6.3 V), tolerance (±10%), package type (2917 / 7343 Metric), physical dimensions, operating temperature range (-55°C to 125°C), and lifetime rating (2000 Hrs @ 125°C). The T491X687K006AT carries ROHS3 compliance matching the original part.

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

A: ESR (Equivalent Series Resistance) affects high-frequency performance and ripple current handling. The T495X687K006ATE045 specifies 45 mOhm @ 100 kHz. Substitutes with higher ESR (T491 series at 600 mOhm) are suitable for general purpose applications. Substitutes with lower ESR (T494 at 100 mOhm, T510 at 23 mOhm) provide improved performance in noise-sensitive or high-frequency filtering circuits.

Q: Are packaging format differences (Bulk, Tape & Reel, Cut Tape) significant for substitution?

A: Packaging format affects supply chain and assembly processes but does not impact electrical performance or physical compatibility. Selection depends on manufacturing requirements and inventory management practices.

Q: Does RoHS compliance status affect electrical performance?

A: No. RoHS compliance status reflects manufacturing process and material composition but does not alter electrical specifications or functional performance. Selection depends on regulatory requirements for the end application.

Q: Can parts from different series (T491, T494, T495, T510) be intermixed in the same design?

A: Yes, provided the application tolerates the ESR variations. All identified parts maintain the same capacitance, voltage, tolerance, package, and temperature specifications. ESR selection should align with circuit requirements for ripple current handling and frequency response.

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