T495X686K025ASE200 Equivalent & Substitute Parts

Part Overview

The T495X686K025ASE200 is a 68 µF molded tantalum capacitor rated at 25 V with 200 mOhm equivalent series resistance (ESR), manufactured by KEMET in the 2917 (7343 Metric) package. This part is classified as obsolete and is no longer in active production. Due to its obsolete status, equivalent substitute parts from active product lines are necessary for new designs and ongoing production requirements. The substitute parts listed maintain the core electrical specifications while offering improved compliance status and availability through current manufacturing channels.

Key Parameters

Parameter	Value	Unit
Capacitance	68	µF
Voltage - Rated	25	V
Tolerance	±10	%
ESR (Equivalent Series Resistance)	200	mOhm
Type	Molded	—
Package / Case	2917 (7343 Metric)	—
Size / Dimension	0.287" L x 0.169" W (7.30mm x 4.30mm)	—
Operating Temperature	-55°C ~ 125°C	—
Mounting Type	Surface Mount	—
RoHS Status	RoHS non-compliant	—

Substitute Part Grouping Explanation

Substitute parts for the T495X686K025ASE200 are classified into two categories based on electrical and mechanical compatibility:

Direct Equivalents (Identical Electrical Parameters): Parts that maintain all critical electrical specifications: 68 µF capacitance, 25 V rated voltage, ±10% tolerance, 200 mOhm ESR, molded type, 2917 package, and -55°C to 125°C operating temperature range. These parts differ only in packaging format (Tape & Reel versus Cut Tape) or manufacturing compliance status.

Similar Alternatives (Variant ESR or Type): Parts that maintain capacitance, voltage, tolerance, package, and temperature specifications but differ in ESR values or construction type. These alternatives are suitable when circuit design permits tolerance of different ESR characteristics or when conformal coating is required for environmental protection.

Key Parameters Determining Substitution:

Capacitance: 68 µF (fixed)
Voltage Rating: 25 V (fixed)
Tolerance: ±10% (fixed)
Package: 2917 (7343 Metric) (fixed)
Operating Temperature: -55°C to 125°C (fixed)
Mounting Type: Surface Mount (fixed)
ESR: 200 mOhm (primary variant)
Type: Molded or Conformal Coated (secondary variant)

Parameter Comparison

Part Number	Manufacturer	Series	Capacitance (µF)	Voltage (V)	Tolerance (%)	ESR (mOhm)	Type	Package	Height (mm)	Product Status	RoHS Status
T495X686K025ASE200	KEMET	T495	68	25	±10	200	Molded	2917	4.30	Obsolete	Non-compliant
T495D686K025ATE200	KEMET	T495	68	25	±10	200	Molded	2917	3.10	Active	ROHS3 Compliant
T495X686K025ATE200	KEMET	T495	68	25	±10	200	Molded	2917	4.30	Active	ROHS3 Compliant
T491X686K025AT	KEMET	T491	68	25	±10	700	Molded	2917	4.30	Active	ROHS3 Compliant
T495X686K025ATE125	KEMET	T495	68	25	±10	125	Molded	2917	4.30	Active	ROHS3 Compliant
T495X686K025ATE150	KEMET	T495	68	25	±10	150	Molded	2917	4.30	Active	ROHS3 Compliant
T510X686K025ATE045	KEMET	T510	68	25	±10	45	Molded	2917	4.30	Active	ROHS3 Compliant
594D686X9025D2T	Vishay Sprague	594D	68	25	±10	200	Conformal Coated	2917	3.10	Active	ROHS3 Compliant
TPSE686K025R0200	KYOCERA AVX	TPS	68	25	±10	200	Molded	2917	4.30	Active	ROHS3 Compliant
595D686X9025D2T	Vishay Sprague	595D	68	25	±10	260	Conformal Coated	2917	3.10	Active	ROHS3 Compliant
TAJE686K025RNJ	KYOCERA AVX	TAJ	68	25	±10	900	Molded	2917	4.30	Active	ROHS3 Compliant

Engineering Selection Recommendations

Primary Recommendation for Direct Replacement:

T495X686K025ATE200 (KEMET) is the primary direct equivalent. This part maintains identical electrical specifications (68 µF, 25 V, ±10%, 200 mOhm ESR) and physical dimensions (0.287" L x 0.169" W, 4.30 mm height) as the obsolete T495X686K025ASE200. The part is in active production status with ROHS3 compliance, ensuring long-term availability and regulatory alignment. Packaging is available in Cut Tape (CT) & Digi-Reel® format.

Alternative for Tape & Reel Packaging:

T495D686K025ATE200 (KEMET) provides identical electrical performance with reduced seated height (3.10 mm versus 4.30 mm). This variant is suitable for applications with height constraints and is available in Tape & Reel (TR) packaging. ROHS3 compliance and active production status are confirmed.

Cross-Manufacturer Equivalent:

TPSE686K025R0200 (KYOCERA AVX, TPS series) matches all electrical and mechanical specifications of the original part. This option provides supply chain diversification while maintaining identical performance characteristics. ROHS3 compliance and active production status are confirmed.

Conformal Coated Alternative:

594D686X9025D2T (Vishay Sprague, TANTAMOUNT™ 594D series) provides identical electrical specifications with conformal coating for enhanced environmental protection. Seated height is 3.10 mm. This option is suitable for applications requiring moisture or corrosion resistance. ROHS3 compliance and active production status are confirmed.

ESR Variants for Specific Circuit Requirements:

When circuit design permits alternative ESR values, the following KEMET T495 series parts maintain all other specifications:

T495X686K025ATE125 (125 mOhm ESR) for lower impedance applications
T495X686K025ATE150 (150 mOhm ESR) for moderate impedance reduction
T510X686K025ATE045 (45 mOhm ESR) for ultra-low impedance requirements

All ESR variants are ROHS3 compliant and in active production.

Not Recommended for Direct Substitution:

T491X686K025AT (700 mOhm ESR) and TAJE686K025RNJ (900 mOhm ESR) exhibit significantly higher ESR values and are suitable only when circuit design explicitly accommodates higher impedance characteristics.

Frequently Asked Questions (FAQ)

Q: Can T495X686K025ATE200 be used as a direct replacement for T495X686K025ASE200?

A: Yes. Both parts share identical electrical specifications (68 µF, 25 V, ±10%, 200 mOhm ESR) and physical dimensions (0.287" L x 0.169" W, 4.30 mm height). The primary difference is product status: the original is obsolete while the replacement is in active production with ROHS3 compliance.

Q: What is the difference between T495X686K025ATE200 and T495D686K025ATE200?

A: Both parts are electrically identical with 200 mOhm ESR. The difference is seated height: T495X (X size code) is 4.30 mm, while T495D (D size code) is 3.10 mm. The D variant is suitable for space-constrained applications. Packaging differs: T495X is available in Cut Tape & Digi-Reel®, while T495D is Tape & Reel.

Q: Are conformal coated alternatives (594D686X9025D2T) electrically equivalent?

A: Yes, electrically equivalent. The 594D part maintains 68 µF, 25 V, ±10%, and 200 mOhm ESR. The conformal coating provides additional environmental protection but increases seated height to 3.10 mm. Conformal coating adds moisture resistance suitable for harsh environments.

Q: Can I substitute a part with different ESR (e.g., T495X686K025ATE125 with 125 mOhm)?

A: ESR substitution is circuit-dependent. Lower ESR (125 mOhm, 150 mOhm, 45 mOhm variants) reduces impedance and heat generation, suitable for high-frequency or high-current applications. Higher ESR (700 mOhm, 900 mOhm variants) increases impedance. Verify circuit requirements before substituting ESR values.

Q: What does ROHS3 compliance mean for this part?

A: ROHS3 compliance indicates the part meets Restriction of Hazardous Substances Directive requirements, restricting lead, cadmium, mercury, and other hazardous materials. The original T495X686K025ASE200 is non-compliant; all active substitutes are ROHS3 compliant, meeting current regulatory standards.

Q: Is the 2917 (7343 Metric) package standard across all substitutes?

A: Yes. All substitute parts listed use the 2917 (7343 Metric) package, ensuring mechanical compatibility with existing PCB layouts and assembly processes.

Q: What is the difference between Cut Tape (CT) & Digi-Reel® and Tape & Reel (TR) packaging?

A: Cut Tape & Digi-Reel® is suitable for lower-volume production and manual assembly. Tape & Reel is optimized for high-volume automated assembly. Both formats contain the same component; packaging choice depends on production volume and assembly equipment.

Q: Can I use KYOCERA AVX TPSE686K025R0200 instead of KEMET parts?

A: Yes. TPSE686K025R0200 is electrically and mechanically equivalent to T495X686K025ATE200, providing cross-manufacturer compatibility. This option enables supply chain flexibility and reduces single-source dependency.

Q: What is the operating temperature range for all substitutes?

A: All substitute parts operate across -55°C to 125°C, matching the original part specification. This range is suitable for industrial and commercial applications.

Q: Are there inventory considerations when selecting substitutes?

A: Yes. Inventory levels vary by part number and packaging format. T495X686K025ATE200 has 10,200 units in stock, while T495D686K025ATE200 has 4,994 units. Verify current inventory with your supplier for production planning.

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