Equivalent & Substitute Parts for T495D685K050ASE300

Part Overview

The T495D685K050ASE300 is a 6.8 µF molded tantalum capacitor rated at 50 V with a 2917 (7343 Metric) package form factor. This component is classified as obsolete, which necessitates identification of active equivalent and substitute parts for ongoing design support and procurement continuity. The part operates across a temperature range of -55°C to 125°C with a rated lifetime of 2000 hours at 85°C. Finding suitable alternatives ensures design flexibility and supply chain reliability for applications requiring this capacitance and voltage specification.

Substiute Parts

T495D685K050ASE300

KEMETIn Stock: 1010T495D685K050ASE300 Datasheet

Current PartRFQ

T495D685K050ATE300

KEMETIn Stock: 2809T495D685K050ATE300 Datasheet

DirectRFQ

TAJD685K050H

KYOCERA AVXIn Stock: 1012TAJD685K050H Datasheet

SimilarRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution eligibility for the T495D685K050ASE300 is determined by strict alignment with the following electrical and mechanical parameters:

Primary Matching Criteria (Non-Negotiable):

• Capacitance: 6.8 µF (exact match required)
• Voltage Rating: 50 V (equal or higher acceptable)
• Package / Case: 2917 (7343 Metric) (exact match required for PCB compatibility)
• Mounting Type: Surface Mount (exact match required)
• Type: Molded Tantalum (exact match required)

Secondary Matching Criteria (Flexible Within Limits):

• Tolerance: ±10% or tighter
• Operating Temperature Range: Must encompass -55°C to 125°C
• ESR: Lower values are acceptable; higher values require circuit validation

Compliance Considerations:

• Product Status: Active parts are preferred over obsolete parts for new designs
• RoHS Status: ROHS3 Compliant parts are preferred for regulatory alignment
• Moisture Sensitivity Level: MSL 1 (Unlimited) is standard for this category

The identified substitutes meet all primary criteria and maintain electrical performance within acceptable parameters for direct replacement in existing designs.

Parameter Comparison

Engineering Selection Recommendations

T495D685K050ATE300 (KEMET - Direct Substitute):

This part is the primary recommended substitute. It maintains identical electrical specifications (6.8 µF, 50 V, ±10%, 300 mOhm ESR) and physical dimensions as the main part. The critical advantage is its Active product status, ensuring long-term availability and supply chain stability. Additionally, T495D685K050ATE300 is ROHS3 Compliant, meeting modern regulatory requirements for new designs and manufacturing environments. The packaging format (Cut Tape and Digi-Reel) supports both prototype and production-volume procurement. This part is suitable for direct replacement in existing designs without circuit modification.

TAJD685K050H (KYOCERA AVX - Similar Substitute):

This part provides functional equivalence with identical capacitance, voltage rating, tolerance, package, and operating temperature range. The primary difference is the ESR specification: 1 Ohm versus 300 mOhm. This higher ESR may affect circuit performance in applications sensitive to impedance characteristics, particularly in high-frequency filtering or low-noise applications. The part maintains Active product status and MSL 1 rating. TAJD685K050H is suitable for applications where ESR tolerance is not a critical design constraint. Cross-manufacturer sourcing provides supply diversification benefits.

Selection Criteria Summary:

• For regulatory compliance and new designs: Select T495D685K050ATE300
• For supply chain diversification: Select TAJD685K050H as secondary source
• For applications with ESR-sensitive circuits: Validate TAJD685K050H performance before deployment
• Avoid the obsolete T495D685K050ASE300 for new designs; use only for legacy system maintenance

Frequently Asked Questions (FAQ)

Q: Can T495D685K050ATE300 be used as a direct replacement for T495D685K050ASE300?

A: Yes. Both parts share identical electrical specifications (6.8 µF, 50 V, ±10% tolerance, 300 mOhm ESR) and physical dimensions (2917 package). The primary difference is product status: T495D685K050ATE300 is Active while the original is Obsolete. No circuit modification is required for substitution.

Q: What is the significance of the ESR difference between T495D685K050ATE300 (300 mOhm) and TAJD685K050H (1 Ohm)?

A: ESR affects impedance characteristics and heat dissipation. The 300 mOhm specification provides lower impedance, beneficial for high-frequency filtering and noise-sensitive applications. The 1 Ohm specification in TAJD685K050H is acceptable for general-purpose applications but may introduce measurable impedance in circuits requiring precise frequency response. Circuit validation is necessary if ESR performance is critical to application function.

Q: Are both substitute parts physically compatible with the original PCB design?

A: Yes. Both T495D685K050ATE300 and TAJD685K050H use the 2917 (7343 Metric) package with identical dimensions: 0.287" L × 0.169" W (7.30 mm × 4.30 mm) and maximum seated height of 0.122" (3.10 mm). PCB footprints and assembly processes require no modification.

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

A: Cut Tape packaging is suitable for prototype and small-volume applications, typically supplied in shorter lengths. Tape & Reel packaging is optimized for automated assembly and production volumes. Both formats contain identical components; packaging selection depends on procurement volume and assembly process requirements.

Q: Is ROHS3 compliance a mandatory requirement for substitution?

A: ROHS3 compliance is not mandatory for substitution but is strongly recommended for new designs and manufacturing environments subject to EU or equivalent regulatory frameworks. T495D685K050ATE300 is ROHS3 Compliant, while TAJD685K050H is RoHS non-compliant. For legacy system maintenance, either part is acceptable; for new designs, T495D685K050ATE300 is the preferred choice.

Q: Can these parts be used interchangeably in high-temperature applications?

A: Yes. All three parts (main, direct substitute, and similar substitute) support the full operating temperature range of -55°C to 125°C. The rated lifetime specification of 2000 hours at 85°C applies to KEMET parts. TAJD685K050H does not specify lifetime data but maintains the same temperature range. Temperature performance is equivalent across all parts.

Q: What inventory considerations should guide part selection?

A: T495D685K050ATE300 has the highest inventory availability (2732 Pcs), supporting both immediate procurement and long-term supply security. TAJD685K050H (967 Pcs) provides secondary sourcing capability. The original T495D685K050ASE300 (986 Pcs) should be reserved for legacy system maintenance only, as its Obsolete status indicates declining availability.