KEMET T496X476K020AS Equivalent & Substitute Parts

Part Overview

The KEMET T496X476K020AS is a 47 µF molded tantalum capacitor rated for 20 V operation in a 2917 (7343 Metric) surface mount package. This component features a fail-safe design with built-in fuse protection and operates across the temperature range of -55°C to 125°C. The part is classified as obsolete, necessitating identification of active equivalent alternatives that maintain identical electrical and mechanical specifications for continued system support and procurement.

Substiute Parts

T496X476K020AS

KEMETIn Stock: 742T496X476K020AS Datasheet

Current PartRFQ

T496X476K020AT

KEMETIn Stock: 1250T496X476K020AT Datasheet

DirectRFQ

T496X476K020ATE300

KEMETIn Stock: 3595T496X476K020ATE300 Datasheet

Parametric EquivalentRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution of the T496X476K020AS is determined by strict equivalence across the following critical parameters:

• Capacitance Value: 47 µF (exact match required)
• Voltage Rating: 20 V (exact match required)
• Tolerance: ±10% (exact match required)
• Package / Case: 2917 (7343 Metric) (exact match required)
• Mounting Type: Surface Mount (exact match required)
• Operating Temperature Range: -55°C to 125°C (exact match required)
• Type: Molded Tantalum (exact match required)
• Features: Fail Safe with Built-in Fuse (exact match required)
• Compliance: ROHS3 Compliant, MSL 1 (exact match required)

The substitute parts T496X476K020AT and T496X476K020ATE300 satisfy all these criteria. Both are active products from KEMET within the T496 series, providing direct functional and mechanical compatibility with the obsolete T496X476K020AS.

Parameter Comparison

Engineering Selection Recommendations

Both T496X476K020AT and T496X476K020ATE300 are qualified substitutes for the obsolete T496X476K020AS based on complete electrical and mechanical parameter equivalence. Selection between the two active alternatives is determined by procurement and packaging requirements:

T496X476K020AT is suitable for applications requiring standard tape and reel packaging with documented 2000-hour lifetime at 85°C and 300 mOhm ESR specification.

T496X476K020ATE300 is suitable for applications requiring tape and reel packaging with the same electrical performance characteristics and higher inventory availability (3500 pcs in stock versus 1146 pcs for T496X476K020AT).

Both parts maintain ROHS3 compliance, MSL 1 rating, and REACH unaffected status, ensuring regulatory compatibility with the original component. The transition from the obsolete T496X476K020AS to either active substitute presents no electrical or mechanical incompatibility.

Frequently Asked Questions (FAQ)

Q: Can T496X476K020AT or T496X476K020ATE300 be used as direct replacements for T496X476K020AS?

A: Yes. Both parts are direct substitutes. They share identical capacitance (47 µF), voltage rating (20 V), tolerance (±10%), package (2917 / 7343 Metric), mounting type (surface mount), operating temperature range (-55°C to 125°C), and fail-safe features. All three parts are ROHS3 compliant with MSL 1 rating.

Q: What is the difference between T496X476K020AT and T496X476K020ATE300?

A: Both parts are electrically and mechanically identical. The primary differences are packaging format (both use tape and reel) and inventory levels. T496X476K020ATE300 has higher stock availability (3500 pcs) compared to T496X476K020AT (1146 pcs). Both specify 300 mOhm ESR and 2000-hour lifetime at 85°C.

Q: Why is the original T496X476K020AS listed as obsolete?

A: The T496X476K020AS has been discontinued by KEMET. The active alternatives T496X476K020AT and T496X476K020ATE300 provide equivalent performance and are recommended for new designs and replacement applications.

Q: Are there any thermal or reliability differences between the substitute parts and the original?

A: The substitute parts provide documented specifications: 2000-hour lifetime at 85°C and 300 mOhm ESR. The original part does not specify these parameters in the available data. Both substitutes operate across the same temperature range (-55°C to 125°C) as the original.

Q: Can these parts be used interchangeably in automated assembly?

A: Yes. Both substitute parts are supplied in tape and reel packaging suitable for automated pick-and-place assembly. The 2917 (7343 Metric) package dimensions are identical across all three parts: 0.287" L x 0.169" W with 0.169" maximum seated height.

Q: What compliance certifications apply to the substitute parts?

A: Both T496X476K020AT and T496X476K020ATE300 are ROHS3 compliant, REACH unaffected, and classified as EAR99 for export control purposes. MSL rating is 1 (unlimited moisture sensitivity level).