T520D337M004ASE045 Equivalent & Substitute Parts

Part Overview

The T520D337M004ASE045 is a 330 µF molded tantalum polymer capacitor rated at 4 V, manufactured by KEMET as part of the KO-CAP® T520 series. This component is designed for surface mount applications in the 2917 (7343 Metric) package with an ESR of 45 mOhm @ 100 kHz.

The T520D337M004ASE045 carries an Obsolete product status. Identifying equivalent and substitute parts is necessary to ensure design continuity, maintain supply chain reliability, and support ongoing production or repair requirements for systems utilizing this capacitor.

Substiute Parts

T520D337M004ASE045

KEMETIn Stock: 932T520D337M004ASE045 Datasheet

Current PartRFQ

T520D337M004ATE045

KEMETIn Stock: 966T520D337M004ATE045 Datasheet

DirectRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution for the T520D337M004ASE045 is determined by strict equivalence across the following critical parameters:

Primary Substitution Criteria:

• Capacitance: 330 µF (exact match required)
• Voltage Rating: 4 V (exact match required)
• Package / Case: 2917 (7343 Metric) (exact match required)
• ESR: 45 mOhm @ 100 kHz (exact match required)
• Mounting Type: Surface Mount (exact match required)
• Operating Temperature Range: -55°C ~ 105°C (exact match required)
• Type: Molded Tantalum Polymer (exact match required)

The primary direct substitute is T520D337M004ATE045, which maintains identical electrical and mechanical specifications while differing only in packaging format (Tape & Reel versus bulk) and product status (Active versus Obsolete). This substitution ensures functional equivalence with improved supply availability.

Parameter Comparison

Engineering Selection Recommendations

T520D337M004ATE045 is the recommended substitute for the obsolete T520D337M004ASE045. This substitution is based on the following engineering factors:

1. Electrical Equivalence: All critical electrical parameters—capacitance, voltage rating, ESR, and operating temperature range—are identical between the main part and substitute.

2. Mechanical Compatibility: Both parts utilize the identical 2917 (7343 Metric) package with matching physical dimensions and height specifications, ensuring PCB layout compatibility without redesign.

3. Product Status: The substitute part carries Active product status, providing assured long-term availability and supply chain continuity compared to the Obsolete main part.

4. Compliance Improvement: The substitute achieves ROHS3 compliance, whereas the main part is RoHS non-compliant. This compliance upgrade supports regulatory requirements in modern manufacturing environments.

5. Packaging Flexibility: The substitute is available in Tape & Reel (TR) format, which is standard for automated assembly processes, while the main part was supplied in bulk packaging.

Selection of T520D337M004ATE045 maintains full functional equivalence while addressing obsolescence and improving supply reliability and regulatory compliance.

Frequently Asked Questions (FAQ)

Q: Can T520D337M004ATE045 be used as a direct replacement for T520D337M004ASE045 on existing PCBs?

A: Yes. Both parts share identical electrical specifications (330 µF, 4 V, 45 mOhm ESR), operating temperature range (-55°C ~ 105°C), and physical dimensions in the 2917 (7343 Metric) package. No PCB modifications are required.

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

A: The primary differences are packaging format and product status. T520D337M004ASE045 is supplied in bulk packaging and carries Obsolete status. T520D337M004ATE045 is supplied in Tape & Reel (TR) format and carries Active status. The electrical and mechanical specifications are identical.

Q: Does the RoHS compliance difference affect substitution?

A: The substitute part (T520D337M004ATE045) achieves ROHS3 compliance, while the main part is RoHS non-compliant. For applications subject to RoHS regulations, the substitute provides regulatory alignment. For legacy systems without RoHS requirements, both parts function identically.

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

A: No. Both parts specify identical operating temperature range (-55°C ~ 105°C) and lifetime rating (2000 Hrs @ 105°C). Thermal and reliability performance are equivalent.

Q: What is the MSL (Moisture Sensitivity Level) for both parts?

A: Both parts carry MSL 3 (168 Hours), indicating identical moisture sensitivity and requiring the same handling and storage protocols during assembly.

Q: Can the Tape & Reel packaging of the substitute be converted to bulk format?

A: Tape & Reel components can be removed from carrier tape for manual placement or bulk storage. However, this process is not standard practice and may affect component traceability. For production environments, Tape & Reel format is preferred for automated assembly.