KEMET T520B476M006ASE040 Equivalent & Substitute Parts

Part Overview

The KEMET T520B476M006ASE040 is a 47 µF molded tantalum polymer capacitor rated at 6.3 V with 40 mOhm equivalent series resistance at 100 kHz. This component is designed for surface mount applications in the 1411 (3528 Metric) package format. The part is currently classified as obsolete, necessitating identification of active equivalent alternatives that maintain identical electrical and mechanical specifications for continued system support and new production requirements.

Substiute Parts

T520B476M006ASE040

KEMETIn Stock: 702T520B476M006ASE040 Datasheet

Current PartRFQ

T520B476M006ATE040

KEMETIn Stock: 3441T520B476M006ATE040 Datasheet

DirectRFQ

T520T476M006ATE040

KEMETIn Stock: 3669T520T476M006ATE040 Datasheet

DirectRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution of the obsolete T520B476M006ASE040 is based on strict equivalence across all critical electrical and mechanical parameters. The allowed substitution criteria are:

• Identical capacitance value: 47 µF
• Identical voltage rating: 6.3 V
• Identical ESR specification: 40 mOhm @ 100 kHz
• Identical package format: 1411 (3528 Metric)
• Identical operating temperature range: -55°C to 105°C
• Identical lifetime rating: 2000 Hours @ 105°C
• Identical tolerance: ±20%
• Identical moisture sensitivity level: 3 (168 Hours)
• Same series family: KO-CAP® T520
• Active product status with current manufacturing availability

The substitute parts differ only in packaging format (Tape & Reel versus bulk) and physical height dimensions, which do not affect electrical performance or board-level compatibility.

Parameter Comparison

Engineering Selection Recommendations

Both T520B476M006ATE040 and T520T476M006ATE040 are direct functional equivalents to the obsolete T520B476M006ASE040. Selection between these active alternatives should be based on the following engineering criteria:

T520B476M006ATE040 maintains identical physical height (0.079" / 2.00mm) to the original part, ensuring direct board-level compatibility without PCB layout modifications. This part is ROHS3 compliant and available in Tape & Reel packaging with 3400 pieces in current inventory.

T520T476M006ATE040 offers a reduced physical height of 0.047" (1.20mm), providing a lower-profile alternative suitable for space-constrained applications. This part is also ROHS3 compliant and available in Tape & Reel packaging with 3600 pieces in current inventory.

Both substitute parts are manufactured by KEMET within the KO-CAP® T520 series and deliver identical electrical performance. The choice between them depends on PCB clearance requirements and available vertical space in the target application. For direct replacement without design modification, T520B476M006ATE040 is the preferred selection.

Frequently Asked Questions (FAQ)

Q: Can T520B476M006ATE040 and T520T476M006ATE040 be used interchangeably with T520B476M006ASE040?

A: Both parts are electrically equivalent with identical capacitance, voltage rating, ESR, operating temperature range, and lifetime specifications. The primary difference is physical height. T520B476M006ATE040 matches the original height (2.00mm), while T520T476M006ATE040 is lower profile (1.20mm). Interchangeability depends on PCB clearance constraints.

Q: What is the difference between the packaging formats listed?

A: T520B476M006ASE040 is supplied in bulk packaging. Both substitute parts (T520B476M006ATE040 and T520T476M006ATE040) are supplied in Tape & Reel (TR) format, which is standard for automated assembly processes. Tape & Reel packaging does not affect component electrical or mechanical performance.

Q: Are the substitute parts RoHS compliant?

A: Yes. Both T520B476M006ATE040 and T520T476M006ATE040 are ROHS3 compliant. The original T520B476M006ASE040 is RoHS non-compliant. This compliance upgrade is a benefit of transitioning to the active substitute parts.

Q: What does the height difference between T520B476M006ATE040 (2.00mm) and T520T476M006ATE040 (1.20mm) mean for my application?

A: The height difference affects PCB clearance and component stacking considerations. If your design has vertical space constraints or requires low-profile components, T520T476M006ATE040 is suitable. If your PCB layout accommodates the original 2.00mm height, T520B476M006ATE040 provides direct replacement without design changes.

Q: Do these parts have identical electrical performance?

A: Yes. Both substitute parts maintain the same 47 µF capacitance, 6.3 V voltage rating, 40 mOhm ESR at 100 kHz, operating temperature range (-55°C to 105°C), and 2000-hour lifetime at 105°C as the original part. Electrical performance is identical.

Q: What is the Moisture Sensitivity Level (MSL) and why does it matter?

A: MSL 3 (168 Hours) indicates the component can be exposed to ambient conditions for up to 168 hours before soldering. Both substitute parts carry the same MSL rating as the original, requiring identical handling and storage protocols.