Equivalent & Substitute Parts for T520D477M004ASE015

Part Overview

The T520D477M004ASE015 is a 470 µF molded tantalum polymer capacitor rated at 4 V, manufactured by KEMET in the KO-CAP® T520 series. This component is classified as obsolete, necessitating identification of active equivalent alternatives for ongoing design support and procurement. The part is housed in a 2917 (7343 Metric) surface mount package with 15 mOhm equivalent series resistance at 100 kHz. Due to its obsolete status, direct substitutes from active product lines are required to maintain design continuity and ensure component availability.

Substiute Parts

T520D477M004ASE015

KEMETIn Stock: 1105T520D477M004ASE015 Datasheet

Current PartRFQ

T520D477M004ATE015

KEMETIn Stock: 5002T520D477M004ATE015 Datasheet

DirectRFQ

4TPE470MFL

Panasonic Electronic ComponentsIn Stock: 15804TPE470MFL Datasheet

DirectRFQ

TCJD477M004R0015E

KYOCERA AVXIn Stock: 1454TCJD477M004R0015E Datasheet

Parametric EquivalentRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution eligibility for the T520D477M004ASE015 is determined by strict equivalence across the following critical parameters:

Mandatory Matching Parameters:

• Capacitance: 470 µF
• Voltage Rating: 4 V
• ESR: 15 mOhm @ 100 kHz
• Package / Case: 2917 (7343 Metric)
• Mounting Type: Surface Mount
• Operating Temperature Range: -55°C to 105°C
• Lifetime @ 105°C: 2000 Hrs
• Tolerance: ±20%

All identified substitute parts meet these electrical and mechanical specifications. The primary distinction among substitutes is product status (active vs. obsolete) and RoHS compliance certification. Packaging format (Tape & Reel vs. Bulk) represents a secondary consideration for procurement logistics but does not affect electrical or mechanical compatibility.

Parameter Comparison

Engineering Selection Recommendations

Primary Recommendation: T520D477M004ATE015 (KEMET)

The T520D477M004ATE015 is the direct successor within the KEMET KO-CAP® T520 series. This part maintains identical electrical specifications and mechanical dimensions to the obsolete T520D477M004ASE015. The primary distinction is product status (active) and RoHS3 compliance certification. Packaging is supplied in Tape & Reel format, suitable for automated assembly processes. Selection of this part eliminates manufacturer transition risk and maintains design continuity within the same product family.

Secondary Recommendations: 4TPE470MFL (Panasonic) and TCJD477M004R0015E (KYOCERA AVX)

Both the Panasonic 4TPE470MFL and KYOCERA AVX TCJD477M004R0015E meet all electrical and mechanical substitution criteria. Both parts are active products with ROHS3 compliance. The 4TPE470MFL exhibits a maximum seated height of 0.118" (3.00mm), which is 0.004" lower than the original specification. This dimensional variance remains within typical PCB layout tolerances for surface mount applications. The TCJD477M004R0015E maintains identical height specifications to the original part.

Selection among these alternatives should be based on:

• Existing supply chain relationships with component manufacturers
• Inventory availability and lead time requirements
• Packaging format compatibility with assembly equipment
• Cost considerations within procurement parameters

All three substitute parts are electrically and mechanically compatible with the original design.

Frequently Asked Questions (FAQ)

Q: Can the T520D477M004ATE015 be used as a direct replacement for the T520D477M004ASE015?

A: Yes. The T520D477M004ATE015 is electrically and mechanically equivalent to the obsolete T520D477M004ASE015. Both parts share identical capacitance (470 µF), voltage rating (4 V), ESR (15 mOhm @ 100 kHz), package dimensions (2917 / 7343 Metric), and operating specifications. The primary difference is product status and RoHS3 compliance certification of the active part.

Q: What is the significance of the height difference between the 4TPE470MFL and other substitutes?

A: The 4TPE470MFL has a maximum seated height of 0.118" (3.00mm), compared to 0.122" (3.10mm) for the original and other substitutes. This 0.004" (0.10mm) difference is negligible for standard PCB layout and assembly processes. No design modifications are required to accommodate this dimensional variance.

Q: Are all substitute parts RoHS compliant?

A: The original T520D477M004ASE015 is RoHS non-compliant. All three substitute parts—T520D477M004ATE015, 4TPE470MFL, and TCJD477M004R0015E—are ROHS3 compliant. If RoHS compliance is a design requirement, any of these substitutes satisfy that criterion.

Q: Does packaging format affect electrical performance?

A: No. Packaging format (Tape & Reel vs. Bulk) is a procurement and assembly logistics consideration only. All substitute parts are supplied in Tape & Reel format and are electrically identical regardless of packaging configuration.

Q: Can these parts be used interchangeably on the same PCB assembly?

A: Yes. All substitute parts are pin-compatible, dimensionally equivalent (within tolerance), and electrically identical. They can be used interchangeably on the same PCB assembly without design modifications or re-qualification.

Q: What is Moisture Sensitivity Level (MSL) 3, and does it affect substitution?

A: MSL 3 indicates the component requires controlled humidity storage and handling for 168 hours after packaging. The original part and two substitutes (T520D477M004ATE015 and TCJD477M004R0015E) specify MSL 3. The 4TPE470MFL does not specify MSL in the provided data. Standard moisture control procedures during assembly apply to all parts with MSL ratings.