Equivalent & Substitute Parts for T520B107M003ASE040

Part Overview

The T520B107M003ASE040 is a 100 µF molded tantalum polymer capacitor rated at 3 V, manufactured by KEMET as part of the KO-CAP® T520 series. This component is designed for surface mount applications in the 1411 (3528 Metric) package format with an ESR of 40 mOhm @ 100 kHz. The part is currently listed as obsolete, necessitating identification of active equivalent alternatives to maintain design continuity and ensure ongoing component availability for production and repair applications.

Substiute Parts

T520B107M003ASE040

KEMETIn Stock: 970T520B107M003ASE040 Datasheet

Current PartRFQ

T520B107M003ATE040

KEMETIn Stock: 790T520B107M003ATE040 Datasheet

DirectRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution of the T520B107M003ASE040 is determined by strict equivalence across the following critical parameters:

Electrical Parameters:

• Capacitance: 100 µF (exact match required)
• Voltage Rating: 3 V (exact match required)
• ESR: 40 mOhm @ 100 kHz (exact match required)
• Tolerance: ±20% (exact match required)

Mechanical Parameters:

• Package / Case: 1411 (3528 Metric) (exact match required)
• Physical Dimensions: 0.138" L x 0.110" W x 0.079" H max (exact match required)
• Mounting Type: Surface Mount (exact match required)

Environmental & Reliability Parameters:

• Operating Temperature Range: -55°C ~ 105°C (exact match required)
• Lifetime @ Temp.: 2000 Hrs @ 105°C (exact match required)
• Moisture Sensitivity Level: 3 (168 Hours) (exact match required)

The substitute part T520B107M003ATE040 meets all these criteria and is classified as a direct equivalent based on identical electrical, mechanical, and environmental specifications.

Parameter Comparison

Engineering Selection Recommendations

The T520B107M003ATE040 is the direct equivalent substitute for the obsolete T520B107M003ASE040. Both parts are manufactured by KEMET within the same KO-CAP® T520 series and share identical electrical, mechanical, and environmental specifications.

Primary Advantage: The substitute part T520B107M003ATE040 carries Active product status, ensuring continued availability and manufacturing support. This is critical for new designs and ongoing production requirements where the main part is no longer available.

Compliance Consideration: The substitute part is ROHS3 compliant, whereas the main part is RoHS non-compliant. This compliance upgrade may be advantageous for applications subject to RoHS regulations, though it does not affect electrical or mechanical compatibility.

Packaging Difference: The main part is supplied in bulk packaging, while the substitute is supplied in Tape & Reel (TR) format. This packaging difference is a logistical consideration only and does not affect component performance or board-level compatibility.

Selection Basis: Selection of T520B107M003ATE040 is justified solely on the basis of product status (Active vs. Obsolete) and regulatory compliance (ROHS3 Compliant), with no compromise to electrical or mechanical performance.

Frequently Asked Questions (FAQ)

Q: Can T520B107M003ATE040 be used as a direct replacement for T520B107M003ASE040 in existing designs?

A: Yes. Both parts are electrically and mechanically identical. The substitute part meets all electrical specifications (100 µF, 3 V, 40 mOhm ESR), operates across the same temperature range (-55°C ~ 105°C), and is housed in the identical 1411 (3528 Metric) package with matching physical dimensions and mounting characteristics.

Q: What is the difference between the two part numbers?

A: The difference lies in the suffix designation: ASE040 versus ATE040. This suffix indicates packaging format (bulk versus Tape & Reel) and product status (Obsolete versus Active). The electrical and mechanical specifications are identical.

Q: Is the Tape & Reel packaging compatible with standard pick-and-place equipment?

A: Yes. Tape & Reel (TR) packaging is the standard format for automated surface mount assembly. The 1411 (3528 Metric) package in TR format is compatible with all standard pick-and-place equipment configured for this package size.

Q: Does the ROHS3 compliance of the substitute part affect circuit performance?

A: No. ROHS3 compliance is a regulatory and material composition designation. It does not alter electrical performance, ESR characteristics, capacitance value, or voltage rating. The substitute part performs identically to the main part in all electrical respects.

Q: Are there any thermal or reliability differences between the two parts?

A: No. Both parts share identical operating temperature ranges (-55°C ~ 105°C) and lifetime specifications (2000 Hrs @ 105°C). Moisture sensitivity levels are also identical at MSL 3 (168 Hours).

Q: Can the substitute part be used in high-frequency applications?

A: Yes. The ESR specification of 40 mOhm @ 100 kHz is identical between both parts, confirming equivalent performance in high-frequency filtering and decoupling applications.