F971A475MBAHT3 Equivalent & Substitute Parts

Part Overview

The F971A475MBAHT3 is a 4.7 µF molded tantalum capacitor manufactured by KYOCERA AVX, rated for 10 V operation in a 1411 (3528 Metric) surface mount package. This component is designed for applications requiring compact, high-reliability capacitive storage with automotive-grade performance. The part is currently active in production and widely available. Substitute parts may be required due to supply constraints, inventory availability, or specific application requirements where alternative electrical characteristics are acceptable within design tolerances.

Substiute Parts

F971A475MBAHT3

KYOCERA AVXIn Stock: 1183F971A475MBAHT3 Datasheet

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T494B475M010AT

KEMETIn Stock: 2996T494B475M010AT Datasheet

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T496B475M010ATE3K5

KEMETIn Stock: 6163T496B475M010ATE3K5 Datasheet

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Key Parameters

Substitute Part Grouping Explanation

Substitution for the F971A475MBAHT3 is determined by strict equivalence in the following parameters:

• Capacitance: 4.7 µF (exact match required)
• Tolerance: ±20% (exact match required)
• Voltage Rating: 10 V (exact match required)
• Package / Case: 1411 (3528 Metric) (exact match required)
• Mounting Type: Surface Mount (exact match required)

The identified substitute parts T494B475M010AT and T496B475M010ATE3K5 meet all mandatory substitution criteria. Variations in ESR, operating temperature range, and lifetime ratings are permitted within the scope of this product category, as these parameters do not affect the core functional equivalence for standard applications.

Parameter Comparison

Engineering Selection Recommendations

All three parts are active products with ROHS3 compliance and REACH unaffected status, meeting current regulatory requirements for electronic component procurement.

T494B475M010AT (KEMET) offers the lowest ESR at 1.5 Ohm, making it suitable for applications where minimized impedance is beneficial. This part features MSL 1 rating, indicating superior moisture resistance compared to the original part.

T496B475M010ATE3K5 (KEMET) incorporates a built-in fuse for fail-safe operation, providing additional circuit protection. ESR is 4.6 Ohm, slightly higher than the original specification. This part also carries MSL 1 rating.

F971A475MBAHT3 (KYOCERA AVX) maintains automotive-grade ratings and supports the extended upper operating temperature of 135°C, providing the widest thermal operating window among the three options.

Selection should be based on specific application requirements regarding ESR performance, thermal operating range, and protective features.

Frequently Asked Questions (FAQ)

Q: Can T494B475M010AT be used as a direct replacement for F971A475MBAHT3?

A: Yes. Both parts share identical capacitance (4.7 µF), tolerance (±20%), voltage rating (10 V), and package (1411 / 3528 Metric). The lower ESR of the KEMET part may improve circuit performance in high-frequency applications.

Q: What is the significance of the ESR difference between these parts?

A: ESR affects impedance characteristics and heat dissipation. The F971A475MBAHT3 specifies 2.8 Ohm, T494B475M010AT provides 1.5 Ohm (lower), and T496B475M010ATE3K5 provides 4.6 Ohm (higher). Applications sensitive to ripple current or operating at elevated frequencies should account for these variations.

Q: Are there temperature rating differences that affect substitution?

A: The F971A475MBAHT3 operates to 135°C, while both KEMET substitutes operate to 125°C. For applications requiring sustained operation above 125°C, the original KYOCERA AVX part is required.

Q: What does MSL 1 versus MSL 3 mean for handling and storage?

A: MSL 3 (F971A475MBAHT3) requires controlled moisture exposure with a 168-hour floor life after packaging opening. MSL 1 (both KEMET parts) indicates unlimited floor life, reducing moisture-related handling constraints during assembly.

Q: Does the built-in fuse in T496B475M010ATE3K5 affect circuit operation?

A: The fuse is a passive safety feature that activates only under fault conditions (overvoltage or excessive current). Under normal operating conditions, it does not affect circuit performance.

Q: Are all three parts suitable for automotive applications?

A: The F971A475MBAHT3 carries explicit automotive ratings (AEC-Q200). The KEMET substitutes are general-purpose parts. Automotive qualification requirements should be verified against specific application standards before substitution.